315c36ced8
Instead move the check to the focus manager, more similar to how focus-visible works. Now nsGlobalWindowInner::ShouldShowFocusRing means "Should we show focus ring for anything in this window", that is: Have we keyboard-navigated in this window, or do we have a pref that says that we should always show focus rings. Fix some callers appropriately (some of them that were not properly accounting for the element being focused in the first place...). Differential Revision: https://phabricator.services.mozilla.com/D75504
4732 lines
174 KiB
C++
4732 lines
174 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/BrowserParent.h"
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#include "nsFocusManager.h"
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#include "ChildIterator.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsGkAtoms.h"
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#include "nsGlobalWindow.h"
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#include "nsContentUtils.h"
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#include "ContentParent.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDocShell.h"
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#include "nsIDocShellTreeOwner.h"
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#include "nsIFormControl.h"
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#include "nsLayoutUtils.h"
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#include "nsFrameTraversal.h"
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#include "nsIWebNavigation.h"
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#include "nsCaret.h"
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#include "nsIBaseWindow.h"
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#include "nsIAppWindow.h"
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#include "nsViewManager.h"
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#include "nsFrameSelection.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/Selection.h"
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#include "nsXULPopupManager.h"
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#include "nsMenuPopupFrame.h"
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#include "nsIScriptError.h"
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#include "nsIScriptObjectPrincipal.h"
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#include "nsIPrincipal.h"
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#include "nsIObserverService.h"
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#include "nsIObjectFrame.h"
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#include "BrowserChild.h"
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#include "nsFrameLoader.h"
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#include "nsHTMLDocument.h"
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#include "nsNetUtil.h"
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#include "nsRange.h"
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#include "nsFrameLoaderOwner.h"
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#include "mozilla/AccessibleCaretEventHub.h"
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#include "mozilla/ContentEvents.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/ElementBinding.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "mozilla/dom/HTMLSlotElement.h"
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#include "mozilla/dom/BrowserBridgeChild.h"
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#include "mozilla/dom/Text.h"
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#include "mozilla/dom/WindowGlobalParent.h"
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#include "mozilla/dom/WindowGlobalChild.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/HTMLEditor.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/Services.h"
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#include "mozilla/Unused.h"
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#include "mozilla/StaticPrefs_full_screen_api.h"
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#include <algorithm>
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#ifdef MOZ_XUL
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# include "nsIDOMXULMenuListElement.h"
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#endif
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#ifdef ACCESSIBILITY
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# include "nsAccessibilityService.h"
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#endif
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::widget;
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// Two types of focus pr logging are available:
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// 'Focus' for normal focus manager calls
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// 'FocusNavigation' for tab and document navigation
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LazyLogModule gFocusLog("Focus");
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LazyLogModule gFocusNavigationLog("FocusNavigation");
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#define LOGFOCUS(args) MOZ_LOG(gFocusLog, mozilla::LogLevel::Debug, args)
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#define LOGFOCUSNAVIGATION(args) \
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MOZ_LOG(gFocusNavigationLog, mozilla::LogLevel::Debug, args)
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#define LOGTAG(log, format, content) \
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if (MOZ_LOG_TEST(log, LogLevel::Debug)) { \
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nsAutoCString tag(NS_LITERAL_CSTRING("(none)")); \
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if (content) { \
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content->NodeInfo()->NameAtom()->ToUTF8String(tag); \
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} \
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MOZ_LOG(log, LogLevel::Debug, (format, tag.get())); \
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}
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#define LOGCONTENT(format, content) LOGTAG(gFocusLog, format, content)
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#define LOGCONTENTNAVIGATION(format, content) \
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LOGTAG(gFocusNavigationLog, format, content)
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struct nsDelayedBlurOrFocusEvent {
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nsDelayedBlurOrFocusEvent(EventMessage aEventMessage, PresShell* aPresShell,
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Document* aDocument, EventTarget* aTarget,
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EventTarget* aRelatedTarget)
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: mPresShell(aPresShell),
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mDocument(aDocument),
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mTarget(aTarget),
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mEventMessage(aEventMessage),
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mRelatedTarget(aRelatedTarget) {}
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nsDelayedBlurOrFocusEvent(const nsDelayedBlurOrFocusEvent& aOther)
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: mPresShell(aOther.mPresShell),
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mDocument(aOther.mDocument),
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mTarget(aOther.mTarget),
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mEventMessage(aOther.mEventMessage) {}
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RefPtr<PresShell> mPresShell;
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nsCOMPtr<Document> mDocument;
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nsCOMPtr<EventTarget> mTarget;
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EventMessage mEventMessage;
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nsCOMPtr<EventTarget> mRelatedTarget;
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};
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inline void ImplCycleCollectionUnlink(nsDelayedBlurOrFocusEvent& aField) {
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aField.mPresShell = nullptr;
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aField.mDocument = nullptr;
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aField.mTarget = nullptr;
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aField.mRelatedTarget = nullptr;
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}
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inline void ImplCycleCollectionTraverse(
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nsCycleCollectionTraversalCallback& aCallback,
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nsDelayedBlurOrFocusEvent& aField, const char* aName, uint32_t aFlags = 0) {
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CycleCollectionNoteChild(
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aCallback, static_cast<nsIDocumentObserver*>(aField.mPresShell.get()),
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aName, aFlags);
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CycleCollectionNoteChild(aCallback, aField.mDocument.get(), aName, aFlags);
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CycleCollectionNoteChild(aCallback, aField.mTarget.get(), aName, aFlags);
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CycleCollectionNoteChild(aCallback, aField.mRelatedTarget.get(), aName,
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aFlags);
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}
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFocusManager)
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NS_INTERFACE_MAP_ENTRY(nsIFocusManager)
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NS_INTERFACE_MAP_ENTRY(nsIObserver)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIFocusManager)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsFocusManager)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsFocusManager)
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NS_IMPL_CYCLE_COLLECTION_WEAK(nsFocusManager, mActiveWindow,
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mActiveBrowsingContextInContent,
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mActiveBrowsingContextInChrome, mFocusedWindow,
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mFocusedBrowsingContextInContent,
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mFocusedBrowsingContextInChrome, mFocusedElement,
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mFirstBlurEvent, mFirstFocusEvent,
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mWindowBeingLowered, mDelayedBlurFocusEvents)
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nsFocusManager* nsFocusManager::sInstance = nullptr;
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bool nsFocusManager::sMouseFocusesFormControl = false;
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bool nsFocusManager::sTestMode = false;
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static const char* kObservedPrefs[] = {
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"accessibility.browsewithcaret", "accessibility.tabfocus_applies_to_xul",
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"accessibility.mouse_focuses_formcontrol", "focusmanager.testmode",
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nullptr};
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nsFocusManager::nsFocusManager()
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: mActiveBrowsingContextInContentSetFromOtherProcess(false),
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mEventHandlingNeedsFlush(false) {}
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nsFocusManager::~nsFocusManager() {
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Preferences::UnregisterCallbacks(nsFocusManager::PrefChanged, kObservedPrefs,
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this);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->RemoveObserver(this, "xpcom-shutdown");
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}
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}
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// static
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nsresult nsFocusManager::Init() {
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nsFocusManager* fm = new nsFocusManager();
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NS_ADDREF(fm);
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sInstance = fm;
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nsIContent::sTabFocusModelAppliesToXUL =
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Preferences::GetBool("accessibility.tabfocus_applies_to_xul",
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nsIContent::sTabFocusModelAppliesToXUL);
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sMouseFocusesFormControl =
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Preferences::GetBool("accessibility.mouse_focuses_formcontrol", false);
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sTestMode = Preferences::GetBool("focusmanager.testmode", false);
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Preferences::RegisterCallbacks(nsFocusManager::PrefChanged, kObservedPrefs,
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fm);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->AddObserver(fm, "xpcom-shutdown", true);
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}
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return NS_OK;
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}
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// static
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void nsFocusManager::Shutdown() { NS_IF_RELEASE(sInstance); }
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// static
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void nsFocusManager::PrefChanged(const char* aPref, void* aSelf) {
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static_cast<nsFocusManager*>(aSelf)->PrefChanged(aPref);
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}
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void nsFocusManager::PrefChanged(const char* aPref) {
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nsDependentCString pref(aPref);
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if (pref.EqualsLiteral("accessibility.browsewithcaret")) {
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UpdateCaretForCaretBrowsingMode();
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} else if (pref.EqualsLiteral("accessibility.tabfocus_applies_to_xul")) {
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nsIContent::sTabFocusModelAppliesToXUL =
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Preferences::GetBool("accessibility.tabfocus_applies_to_xul",
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nsIContent::sTabFocusModelAppliesToXUL);
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} else if (pref.EqualsLiteral("accessibility.mouse_focuses_formcontrol")) {
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sMouseFocusesFormControl =
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Preferences::GetBool("accessibility.mouse_focuses_formcontrol", false);
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} else if (pref.EqualsLiteral("focusmanager.testmode")) {
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sTestMode = Preferences::GetBool("focusmanager.testmode", false);
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}
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}
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NS_IMETHODIMP
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nsFocusManager::Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) {
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if (!nsCRT::strcmp(aTopic, "xpcom-shutdown")) {
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mActiveWindow = nullptr;
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mActiveBrowsingContextInContent = nullptr;
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mActiveBrowsingContextInChrome = nullptr;
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mFocusedWindow = nullptr;
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mFocusedBrowsingContextInContent = nullptr;
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mFocusedBrowsingContextInChrome = nullptr;
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mFocusedElement = nullptr;
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mFirstBlurEvent = nullptr;
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mFirstFocusEvent = nullptr;
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mWindowBeingLowered = nullptr;
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mDelayedBlurFocusEvents.Clear();
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}
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return NS_OK;
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}
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// given a frame content node, retrieve the nsIDOMWindow displayed in it
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static nsPIDOMWindowOuter* GetContentWindow(nsIContent* aContent) {
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Document* doc = aContent->GetComposedDoc();
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if (doc) {
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Document* subdoc = doc->GetSubDocumentFor(aContent);
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if (subdoc) return subdoc->GetWindow();
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}
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return nullptr;
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}
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bool nsFocusManager::IsFocused(nsIContent* aContent) {
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if (!aContent || !mFocusedElement) {
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return false;
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}
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return aContent == mFocusedElement;
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}
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bool nsFocusManager::IsTestMode() { return sTestMode; }
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// get the current window for the given content node
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static nsPIDOMWindowOuter* GetCurrentWindow(nsIContent* aContent) {
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Document* doc = aContent->GetComposedDoc();
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return doc ? doc->GetWindow() : nullptr;
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}
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// static
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Element* nsFocusManager::GetFocusedDescendant(
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nsPIDOMWindowOuter* aWindow, SearchRange aSearchRange,
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nsPIDOMWindowOuter** aFocusedWindow) {
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NS_ENSURE_TRUE(aWindow, nullptr);
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*aFocusedWindow = nullptr;
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Element* currentElement = nullptr;
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nsPIDOMWindowOuter* window = aWindow;
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for (;;) {
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*aFocusedWindow = window;
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currentElement = window->GetFocusedElement();
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if (!currentElement || aSearchRange == eOnlyCurrentWindow) {
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break;
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}
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window = GetContentWindow(currentElement);
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if (!window) {
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break;
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}
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if (aSearchRange == eIncludeAllDescendants) {
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continue;
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}
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MOZ_ASSERT(aSearchRange == eIncludeVisibleDescendants);
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// If the child window doesn't have PresShell, it means the window is
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// invisible.
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nsIDocShell* docShell = window->GetDocShell();
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if (!docShell) {
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break;
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}
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if (!docShell->GetPresShell()) {
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break;
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}
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}
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NS_IF_ADDREF(*aFocusedWindow);
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return currentElement;
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}
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// static
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Element* nsFocusManager::GetRedirectedFocus(nsIContent* aContent) {
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#ifdef MOZ_XUL
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if (aContent->IsXULElement()) {
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nsCOMPtr<nsIDOMXULMenuListElement> menulist =
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aContent->AsElement()->AsXULMenuList();
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if (menulist) {
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RefPtr<Element> inputField;
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menulist->GetInputField(getter_AddRefs(inputField));
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return inputField;
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}
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}
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#endif
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return nullptr;
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}
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// static
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InputContextAction::Cause nsFocusManager::GetFocusMoveActionCause(
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uint32_t aFlags) {
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if (aFlags & nsIFocusManager::FLAG_BYTOUCH) {
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return InputContextAction::CAUSE_TOUCH;
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} else if (aFlags & nsIFocusManager::FLAG_BYMOUSE) {
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return InputContextAction::CAUSE_MOUSE;
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} else if (aFlags & nsIFocusManager::FLAG_BYKEY) {
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return InputContextAction::CAUSE_KEY;
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} else if (aFlags & nsIFocusManager::FLAG_BYLONGPRESS) {
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return InputContextAction::CAUSE_LONGPRESS;
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}
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return InputContextAction::CAUSE_UNKNOWN;
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}
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NS_IMETHODIMP
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nsFocusManager::GetActiveWindow(mozIDOMWindowProxy** aWindow) {
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MOZ_ASSERT(XRE_IsParentProcess(),
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"Must not be called outside the parent process.");
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NS_IF_ADDREF(*aWindow = mActiveWindow);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::GetActiveBrowsingContext(BrowsingContext** aBrowsingContext) {
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NS_IF_ADDREF(*aBrowsingContext = GetActiveBrowsingContext());
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return NS_OK;
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}
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void nsFocusManager::FocusWindow(nsPIDOMWindowOuter* aWindow,
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CallerType aCallerType) {
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if (RefPtr<nsFocusManager> fm = sInstance) {
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fm->SetFocusedWindowWithCallerType(aWindow, aCallerType);
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}
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}
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NS_IMETHODIMP
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nsFocusManager::GetFocusedWindow(mozIDOMWindowProxy** aFocusedWindow) {
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NS_IF_ADDREF(*aFocusedWindow = mFocusedWindow);
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return NS_OK;
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}
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NS_IMETHODIMP nsFocusManager::SetFocusedWindowWithCallerType(
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mozIDOMWindowProxy* aWindowToFocus, CallerType aCallerType) {
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LOGFOCUS(("<<SetFocusedWindow begin>>"));
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nsCOMPtr<nsPIDOMWindowOuter> windowToFocus =
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nsPIDOMWindowOuter::From(aWindowToFocus);
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NS_ENSURE_TRUE(windowToFocus, NS_ERROR_FAILURE);
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nsCOMPtr<Element> frameElement = windowToFocus->GetFrameElementInternal();
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if (frameElement) {
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// pass false for aFocusChanged so that the caret does not get updated
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// and scrolling does not occur.
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SetFocusInner(frameElement, 0, false, true);
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} else {
|
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// this is a top-level window. If the window has a child frame focused,
|
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// clear the focus. Otherwise, focus should already be in this frame, or
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// already cleared. This ensures that focus will be in this frame and not
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// in a child.
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nsIContent* content = windowToFocus->GetFocusedElement();
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if (content) {
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if (nsCOMPtr<nsPIDOMWindowOuter> childWindow = GetContentWindow(content))
|
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ClearFocus(windowToFocus);
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}
|
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}
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nsCOMPtr<nsPIDOMWindowOuter> rootWindow = windowToFocus->GetPrivateRoot();
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if (rootWindow) RaiseWindow(rootWindow, aCallerType);
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LOGFOCUS(("<<SetFocusedWindow end>>"));
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return NS_OK;
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}
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NS_IMETHODIMP nsFocusManager::SetFocusedWindow(
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mozIDOMWindowProxy* aWindowToFocus) {
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return SetFocusedWindowWithCallerType(aWindowToFocus, CallerType::System);
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}
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NS_IMETHODIMP
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nsFocusManager::GetFocusedElement(Element** aFocusedElement) {
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RefPtr<Element> focusedElement = mFocusedElement;
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focusedElement.forget(aFocusedElement);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::GetLastFocusMethod(mozIDOMWindowProxy* aWindow,
|
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uint32_t* aLastFocusMethod) {
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// the focus method is stored on the inner window
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nsCOMPtr<nsPIDOMWindowOuter> window;
|
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if (aWindow) {
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window = nsPIDOMWindowOuter::From(aWindow);
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}
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if (!window) window = mFocusedWindow;
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|
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*aLastFocusMethod = window ? window->GetFocusMethod() : 0;
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|
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NS_ASSERTION((*aLastFocusMethod & FOCUSMETHOD_MASK) == *aLastFocusMethod,
|
|
"invalid focus method");
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return NS_OK;
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|
}
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|
|
NS_IMETHODIMP
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nsFocusManager::SetFocus(Element* aElement, uint32_t aFlags) {
|
|
LOGFOCUS(("<<SetFocus begin>>"));
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|
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NS_ENSURE_ARG(aElement);
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SetFocusInner(aElement, aFlags, true, true);
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LOGFOCUS(("<<SetFocus end>>"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::ElementIsFocusable(Element* aElement, uint32_t aFlags,
|
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bool* aIsFocusable) {
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NS_ENSURE_TRUE(aElement, NS_ERROR_INVALID_ARG);
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*aIsFocusable = FlushAndCheckIfFocusable(aElement, aFlags) != nullptr;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFocusManager::MoveFocus(mozIDOMWindowProxy* aWindow, Element* aStartElement,
|
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uint32_t aType, uint32_t aFlags, Element** aElement) {
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*aElement = nullptr;
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|
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LOGFOCUS(("<<MoveFocus begin Type: %d Flags: %x>>", aType, aFlags));
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|
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if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug) && mFocusedWindow) {
|
|
Document* doc = mFocusedWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Focused Window: %p %s", mFocusedWindow.get(),
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
|
|
LOGCONTENT(" Current Focus: %s", mFocusedElement.get());
|
|
|
|
// use FLAG_BYMOVEFOCUS when switching focus with MoveFocus unless one of
|
|
// the other focus methods is already set, or we're just moving to the root
|
|
// or caret position.
|
|
if (aType != MOVEFOCUS_ROOT && aType != MOVEFOCUS_CARET &&
|
|
(aFlags & FOCUSMETHOD_MASK) == 0) {
|
|
aFlags |= FLAG_BYMOVEFOCUS;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window;
|
|
if (aStartElement) {
|
|
window = GetCurrentWindow(aStartElement);
|
|
} else {
|
|
window = aWindow ? nsPIDOMWindowOuter::From(aWindow) : mFocusedWindow.get();
|
|
}
|
|
|
|
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
|
|
|
|
bool noParentTraversal = aFlags & FLAG_NOPARENTFRAME;
|
|
nsCOMPtr<nsIContent> newFocus;
|
|
nsresult rv = DetermineElementToMoveFocus(window, aStartElement, aType,
|
|
noParentTraversal, true,
|
|
getter_AddRefs(newFocus));
|
|
if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
LOGCONTENTNAVIGATION("Element to be focused: %s", newFocus.get());
|
|
|
|
if (newFocus && newFocus->IsElement()) {
|
|
// for caret movement, pass false for the aFocusChanged argument,
|
|
// otherwise the caret will end up moving to the focus position. This
|
|
// would be a problem because the caret would move to the beginning of the
|
|
// focused link making it impossible to navigate the caret over a link.
|
|
SetFocusInner(MOZ_KnownLive(newFocus->AsElement()), aFlags,
|
|
aType != MOVEFOCUS_CARET, true);
|
|
*aElement = do_AddRef(newFocus->AsElement()).take();
|
|
} else if (aType == MOVEFOCUS_ROOT || aType == MOVEFOCUS_CARET) {
|
|
// no content was found, so clear the focus for these two types.
|
|
ClearFocus(window);
|
|
}
|
|
|
|
LOGFOCUS(("<<MoveFocus end>>"));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::ClearFocus(mozIDOMWindowProxy* aWindow) {
|
|
LOGFOCUS(("<<ClearFocus begin>>"));
|
|
|
|
// if the window to clear is the focused window or an ancestor of the
|
|
// focused window, then blur the existing focused content. Otherwise, the
|
|
// focus is somewhere else so just update the current node.
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (IsSameOrAncestor(window, GetFocusedBrowsingContext())) {
|
|
BrowsingContext* bc = window->GetBrowsingContext();
|
|
bool isAncestor = (GetFocusedBrowsingContext() != bc);
|
|
if (Blur(bc, nullptr, isAncestor, true)) {
|
|
// if we are clearing the focus on an ancestor of the focused window,
|
|
// the ancestor will become the new focused window, so focus it
|
|
if (isAncestor) Focus(window, nullptr, 0, true, false, false, true);
|
|
}
|
|
} else {
|
|
window->SetFocusedElement(nullptr);
|
|
}
|
|
|
|
LOGFOCUS(("<<ClearFocus end>>"));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::GetFocusedElementForWindow(mozIDOMWindowProxy* aWindow,
|
|
bool aDeep,
|
|
mozIDOMWindowProxy** aFocusedWindow,
|
|
Element** aElement) {
|
|
*aElement = nullptr;
|
|
if (aFocusedWindow) *aFocusedWindow = nullptr;
|
|
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
RefPtr<Element> focusedElement =
|
|
GetFocusedDescendant(window,
|
|
aDeep ? nsFocusManager::eIncludeAllDescendants
|
|
: nsFocusManager::eOnlyCurrentWindow,
|
|
getter_AddRefs(focusedWindow));
|
|
|
|
focusedElement.forget(aElement);
|
|
|
|
if (aFocusedWindow) NS_IF_ADDREF(*aFocusedWindow = focusedWindow);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::MoveCaretToFocus(mozIDOMWindowProxy* aWindow) {
|
|
nsCOMPtr<nsIWebNavigation> webnav = do_GetInterface(aWindow);
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = do_QueryInterface(webnav);
|
|
if (dsti) {
|
|
if (dsti->ItemType() != nsIDocShellTreeItem::typeChrome) {
|
|
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(dsti);
|
|
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
|
|
|
|
// don't move the caret for editable documents
|
|
bool isEditable;
|
|
docShell->GetEditable(&isEditable);
|
|
if (isEditable) return NS_OK;
|
|
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
nsCOMPtr<nsIContent> content = window->GetFocusedElement();
|
|
if (content) {
|
|
MoveCaretToFocus(presShell, content);
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowRaised(mozIDOMWindowProxy* aWindow) {
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Raised [Currently: %p %p]", aWindow,
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Raised Window: %p %s", aWindow,
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
if (mActiveWindow) {
|
|
doc = mActiveWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Active Window: %p %s", mActiveWindow.get(),
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
if (mActiveWindow == window) {
|
|
// The window is already active, so there is no need to focus anything,
|
|
// but make sure that the right widget is focused. This is a special case
|
|
// for Windows because when restoring a minimized window, a second
|
|
// activation will occur and the top-level widget could be focused instead
|
|
// of the child we want. We solve this by calling SetFocus to ensure that
|
|
// what the focus manager thinks should be the current widget is actually
|
|
// focused.
|
|
EnsureCurrentWidgetFocused(CallerType::System);
|
|
return NS_OK;
|
|
}
|
|
|
|
// lower the existing window, if any. This shouldn't happen usually.
|
|
if (mActiveWindow) {
|
|
WindowLowered(mActiveWindow);
|
|
}
|
|
} else {
|
|
BrowsingContext* bc = window->GetBrowsingContext();
|
|
if (bc == bc->Top()) {
|
|
BrowsingContext* active = GetActiveBrowsingContext();
|
|
if (active == bc && !mActiveBrowsingContextInContentSetFromOtherProcess) {
|
|
// EnsureCurrentWidgetFocused() should not be necessary with
|
|
// PuppetWidget.
|
|
return NS_OK;
|
|
}
|
|
|
|
if (active && active != bc) {
|
|
if (active->IsInProcess()) {
|
|
WindowLowered(active->GetDOMWindow());
|
|
}
|
|
// No else, because trying to lower other-process windows
|
|
// from here can result in the BrowsingContext no longer
|
|
// existing in the parent process by the time it deserializes
|
|
// the IPC message.
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> docShellAsItem = window->GetDocShell();
|
|
// If there's no docShellAsItem, this window must have been closed,
|
|
// in that case there is no tree owner.
|
|
NS_ENSURE_TRUE(docShellAsItem, NS_OK);
|
|
|
|
// set this as the active window
|
|
if (XRE_IsParentProcess()) {
|
|
mActiveWindow = window;
|
|
} else {
|
|
BrowsingContext* bc = window->GetBrowsingContext();
|
|
if (bc == bc->Top()) {
|
|
SetActiveBrowsingContextInContent(bc);
|
|
}
|
|
}
|
|
|
|
// ensure that the window is enabled and visible
|
|
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
|
|
docShellAsItem->GetTreeOwner(getter_AddRefs(treeOwner));
|
|
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(treeOwner);
|
|
if (baseWindow) {
|
|
bool isEnabled = true;
|
|
if (NS_SUCCEEDED(baseWindow->GetEnabled(&isEnabled)) && !isEnabled) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
baseWindow->SetVisibility(true);
|
|
}
|
|
|
|
// If this is a parent or single process window, send the activate event.
|
|
// Events for child process windows will be sent when ParentActivated
|
|
// is called.
|
|
if (XRE_IsParentProcess()) {
|
|
// Unsetting top-level focus upon lowering was inhibited to accommodate
|
|
// ATOK, so we need to do it here.
|
|
BrowserParent::UnsetTopLevelWebFocusAll();
|
|
ActivateOrDeactivate(window, true);
|
|
}
|
|
|
|
// retrieve the last focused element within the window that was raised
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentWindow;
|
|
RefPtr<Element> currentFocus = GetFocusedDescendant(
|
|
window, eIncludeAllDescendants, getter_AddRefs(currentWindow));
|
|
|
|
NS_ASSERTION(currentWindow, "window raised with no window current");
|
|
if (!currentWindow) return NS_OK;
|
|
|
|
// If there is no nsIAppWindow, then this is an embedded or child process
|
|
// window. Pass false for aWindowRaised so that commands get updated.
|
|
nsCOMPtr<nsIAppWindow> appWin(do_GetInterface(baseWindow));
|
|
Focus(currentWindow, currentFocus, 0, true, false, appWin != nullptr, true);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowLowered(mozIDOMWindowProxy* aWindow) {
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Lowered [Currently: %p %p]", aWindow,
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Lowered Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
if (mActiveWindow) {
|
|
doc = mActiveWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Active Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
if (mActiveWindow != window) {
|
|
return NS_OK;
|
|
}
|
|
} else {
|
|
BrowsingContext* bc = window->GetBrowsingContext();
|
|
BrowsingContext* active = GetActiveBrowsingContext();
|
|
if (active != bc->Top()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// clear the mouse capture as the active window has changed
|
|
PresShell::ReleaseCapturingContent();
|
|
|
|
// In addition, reset the drag state to ensure that we are no longer in
|
|
// drag-select mode.
|
|
if (mFocusedWindow) {
|
|
nsCOMPtr<nsIDocShell> docShell = mFocusedWindow->GetDocShell();
|
|
if (docShell) {
|
|
if (PresShell* presShell = docShell->GetPresShell()) {
|
|
RefPtr<nsFrameSelection> frameSelection = presShell->FrameSelection();
|
|
frameSelection->SetDragState(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
// If this is a parent or single process window, send the deactivate event.
|
|
// Events for child process windows will be sent when ParentActivated
|
|
// is called.
|
|
if (XRE_IsParentProcess()) {
|
|
ActivateOrDeactivate(window, false);
|
|
}
|
|
|
|
// keep track of the window being lowered, so that attempts to raise the
|
|
// window can be prevented until we return. Otherwise, focus can get into
|
|
// an unusual state.
|
|
mWindowBeingLowered = window;
|
|
if (XRE_IsParentProcess()) {
|
|
mActiveWindow = nullptr;
|
|
} else {
|
|
BrowsingContext* bc = window->GetBrowsingContext();
|
|
if (bc == bc->Top()) {
|
|
SetActiveBrowsingContextInContent(nullptr);
|
|
}
|
|
}
|
|
|
|
if (mFocusedWindow) Blur(nullptr, nullptr, true, true);
|
|
|
|
mWindowBeingLowered = nullptr;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFocusManager::ContentRemoved(Document* aDocument,
|
|
nsIContent* aContent) {
|
|
NS_ENSURE_ARG(aDocument);
|
|
NS_ENSURE_ARG(aContent);
|
|
|
|
nsPIDOMWindowOuter* window = aDocument->GetWindow();
|
|
if (!window) return NS_OK;
|
|
|
|
// if the content is currently focused in the window, or is an
|
|
// shadow-including inclusive ancestor of the currently focused element,
|
|
// reset the focus within that window.
|
|
nsIContent* content = window->GetFocusedElement();
|
|
if (content &&
|
|
nsContentUtils::ContentIsHostIncludingDescendantOf(content, aContent)) {
|
|
bool shouldShowFocusRing = window->ShouldShowFocusRing();
|
|
window->SetFocusedElement(nullptr);
|
|
|
|
// if this window is currently focused, clear the global focused
|
|
// element as well, but don't fire any events.
|
|
if (window->GetBrowsingContext() == GetFocusedBrowsingContext()) {
|
|
mFocusedElement = nullptr;
|
|
} else {
|
|
// Check if the node that was focused is an iframe or similar by looking
|
|
// if it has a subdocument. This would indicate that this focused iframe
|
|
// and its descendants will be going away. We will need to move the
|
|
// focus somewhere else, so just clear the focus in the toplevel window
|
|
// so that no element is focused.
|
|
//
|
|
// This check does not work correctly in Fission:
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1613054
|
|
Document* subdoc = aDocument->GetSubDocumentFor(content);
|
|
if (subdoc) {
|
|
nsCOMPtr<nsIDocShell> docShell = subdoc->GetDocShell();
|
|
if (docShell) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> childWindow = docShell->GetWindow();
|
|
if (childWindow &&
|
|
IsSameOrAncestor(childWindow, GetFocusedBrowsingContext())) {
|
|
if (XRE_IsParentProcess()) {
|
|
ClearFocus(mActiveWindow);
|
|
} else {
|
|
BrowsingContext* active = GetActiveBrowsingContext();
|
|
if (active) {
|
|
if (active->IsInProcess()) {
|
|
ClearFocus(active->GetDOMWindow());
|
|
} else {
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
contentChild->SendClearFocus(active);
|
|
}
|
|
} // no else, because ClearFocus does nothing with nullptr
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Notify the editor in case we removed its ancestor limiter.
|
|
if (content->IsEditable()) {
|
|
nsCOMPtr<nsIDocShell> docShell = aDocument->GetDocShell();
|
|
if (docShell) {
|
|
RefPtr<HTMLEditor> htmlEditor = docShell->GetHTMLEditor();
|
|
if (htmlEditor) {
|
|
RefPtr<Selection> selection = htmlEditor->GetSelection();
|
|
if (selection && selection->GetFrameSelection() &&
|
|
content == selection->GetFrameSelection()->GetAncestorLimiter()) {
|
|
htmlEditor->FinalizeSelection();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
NotifyFocusStateChange(content, nullptr, shouldShowFocusRing, 0,
|
|
/* aGettingFocus = */ false);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowShown(mozIDOMWindowProxy* aWindow, bool aNeedsFocus) {
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Shown [Currently: %p %p]", window.get(),
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS(("Shown Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
|
|
if (mFocusedWindow) {
|
|
doc = mFocusedWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Focused Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nsIDocShell* docShell = window->GetDocShell()) {
|
|
if (nsCOMPtr<nsIBrowserChild> child = docShell->GetBrowserChild()) {
|
|
bool active = static_cast<BrowserChild*>(child.get())->ParentIsActive();
|
|
ActivateOrDeactivate(window, active);
|
|
}
|
|
}
|
|
|
|
if (mFocusedWindow != window) return NS_OK;
|
|
|
|
if (aNeedsFocus) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentWindow;
|
|
RefPtr<Element> currentFocus = GetFocusedDescendant(
|
|
window, eIncludeAllDescendants, getter_AddRefs(currentWindow));
|
|
if (currentWindow)
|
|
Focus(currentWindow, currentFocus, 0, true, false, false, true);
|
|
} else {
|
|
// Sometimes, an element in a window can be focused before the window is
|
|
// visible, which would mean that the widget may not be properly focused.
|
|
// When the window becomes visible, make sure the right widget is focused.
|
|
EnsureCurrentWidgetFocused(CallerType::System);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::WindowHidden(mozIDOMWindowProxy* aWindow) {
|
|
// if there is no window or it is not the same or an ancestor of the
|
|
// currently focused window, just return, as the current focus will not
|
|
// be affected.
|
|
|
|
NS_ENSURE_TRUE(aWindow, NS_ERROR_INVALID_ARG);
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
LOGFOCUS(("Window %p Hidden [Currently: %p %p]", window.get(),
|
|
mActiveWindow.get(), mFocusedWindow.get()));
|
|
nsAutoCString spec;
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Hide Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
|
|
if (mFocusedWindow) {
|
|
doc = mFocusedWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Focused Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
|
|
if (mActiveWindow) {
|
|
doc = mActiveWindow->GetExtantDoc();
|
|
if (doc && doc->GetDocumentURI()) {
|
|
LOGFOCUS((" Active Window: %s",
|
|
doc->GetDocumentURI()->GetSpecOrDefault().get()));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!IsSameOrAncestor(window, mFocusedWindow)) return NS_OK;
|
|
|
|
// at this point, we know that the window being hidden is either the focused
|
|
// window, or an ancestor of the focused window. Either way, the focus is no
|
|
// longer valid, so it needs to be updated.
|
|
|
|
RefPtr<Element> oldFocusedElement = std::move(mFocusedElement);
|
|
|
|
nsCOMPtr<nsIDocShell> focusedDocShell = mFocusedWindow->GetDocShell();
|
|
RefPtr<PresShell> presShell = focusedDocShell->GetPresShell();
|
|
|
|
if (oldFocusedElement && oldFocusedElement->IsInComposedDoc()) {
|
|
NotifyFocusStateChange(oldFocusedElement, nullptr,
|
|
mFocusedWindow->ShouldShowFocusRing(), 0, false);
|
|
window->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
if (presShell) {
|
|
SendFocusOrBlurEvent(eBlur, presShell,
|
|
oldFocusedElement->GetComposedDoc(),
|
|
oldFocusedElement, 1, false);
|
|
}
|
|
}
|
|
|
|
nsPresContext* focusedPresContext =
|
|
presShell ? presShell->GetPresContext() : nullptr;
|
|
IMEStateManager::OnChangeFocus(focusedPresContext, nullptr,
|
|
GetFocusMoveActionCause(0));
|
|
if (presShell) {
|
|
SetCaretVisible(presShell, false, nullptr);
|
|
}
|
|
|
|
// if the docshell being hidden is being destroyed, then we want to move
|
|
// focus somewhere else. Call ClearFocus on the toplevel window, which
|
|
// will have the effect of clearing the focus and moving the focused window
|
|
// to the toplevel window. But if the window isn't being destroyed, we are
|
|
// likely just loading a new document in it, so we want to maintain the
|
|
// focused window so that the new document gets properly focused.
|
|
nsCOMPtr<nsIDocShell> docShellBeingHidden = window->GetDocShell();
|
|
bool beingDestroyed = !docShellBeingHidden;
|
|
if (docShellBeingHidden) {
|
|
docShellBeingHidden->IsBeingDestroyed(&beingDestroyed);
|
|
}
|
|
if (beingDestroyed) {
|
|
// There is usually no need to do anything if a toplevel window is going
|
|
// away, as we assume that WindowLowered will be called. However, this may
|
|
// not happen if nsIAppStartup::eForceQuit is used to quit, and can cause
|
|
// a leak. So if the active window is being destroyed, call WindowLowered
|
|
// directly.
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
if (mActiveWindow == mFocusedWindow || mActiveWindow == window) {
|
|
WindowLowered(mActiveWindow);
|
|
} else {
|
|
ClearFocus(mActiveWindow);
|
|
}
|
|
} else {
|
|
BrowsingContext* active = GetActiveBrowsingContext();
|
|
if (active) {
|
|
nsPIDOMWindowOuter* activeWindow = active->GetDOMWindow();
|
|
if (activeWindow) {
|
|
if ((mFocusedWindow &&
|
|
mFocusedWindow->GetBrowsingContext() == active) ||
|
|
(window->GetBrowsingContext() == active)) {
|
|
WindowLowered(activeWindow);
|
|
} else {
|
|
ClearFocus(activeWindow);
|
|
}
|
|
} // else do nothing when an out-of-process iframe is torn down
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// if the window being hidden is an ancestor of the focused window, adjust
|
|
// the focused window so that it points to the one being hidden. This
|
|
// ensures that the focused window isn't in a chain of frames that doesn't
|
|
// exist any more.
|
|
if (window != mFocusedWindow) {
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti =
|
|
mFocusedWindow ? mFocusedWindow->GetDocShell() : nullptr;
|
|
if (dsti) {
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
dsti->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
if (parentDsti) {
|
|
if (nsCOMPtr<nsPIDOMWindowOuter> parentWindow = parentDsti->GetWindow())
|
|
parentWindow->SetFocusedElement(nullptr);
|
|
}
|
|
}
|
|
|
|
SetFocusedWindowInternal(window);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::FireDelayedEvents(Document* aDocument) {
|
|
NS_ENSURE_ARG(aDocument);
|
|
|
|
// fire any delayed focus and blur events in the same order that they were
|
|
// added
|
|
for (uint32_t i = 0; i < mDelayedBlurFocusEvents.Length(); i++) {
|
|
if (mDelayedBlurFocusEvents[i].mDocument == aDocument) {
|
|
if (!aDocument->GetInnerWindow() ||
|
|
!aDocument->GetInnerWindow()->IsCurrentInnerWindow()) {
|
|
// If the document was navigated away from or is defunct, don't bother
|
|
// firing events on it. Note the symmetry between this condition and
|
|
// the similar one in Document.cpp:FireOrClearDelayedEvents.
|
|
mDelayedBlurFocusEvents.RemoveElementAt(i);
|
|
--i;
|
|
} else if (!aDocument->EventHandlingSuppressed()) {
|
|
EventMessage message = mDelayedBlurFocusEvents[i].mEventMessage;
|
|
nsCOMPtr<EventTarget> target = mDelayedBlurFocusEvents[i].mTarget;
|
|
RefPtr<PresShell> presShell = mDelayedBlurFocusEvents[i].mPresShell;
|
|
nsCOMPtr<EventTarget> relatedTarget =
|
|
mDelayedBlurFocusEvents[i].mRelatedTarget;
|
|
mDelayedBlurFocusEvents.RemoveElementAt(i);
|
|
|
|
FireFocusOrBlurEvent(message, presShell, target, false, false,
|
|
relatedTarget);
|
|
--i;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::FocusPlugin(Element* aPlugin) {
|
|
NS_ENSURE_ARG(aPlugin);
|
|
SetFocusInner(aPlugin, 0, true, false);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFocusManager::ParentActivated(mozIDOMWindowProxy* aWindow, bool aActive) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = nsPIDOMWindowOuter::From(aWindow);
|
|
NS_ENSURE_TRUE(window, NS_ERROR_INVALID_ARG);
|
|
|
|
ActivateOrDeactivate(window, aActive);
|
|
return NS_OK;
|
|
}
|
|
|
|
static bool ShouldMatchFocusVisible(const Element& aElement,
|
|
int32_t aFocusFlags) {
|
|
switch (nsFocusManager::GetFocusMoveActionCause(aFocusFlags)) {
|
|
case InputContextAction::CAUSE_UNKNOWN:
|
|
case InputContextAction::CAUSE_KEY:
|
|
return true;
|
|
case InputContextAction::CAUSE_MOUSE:
|
|
case InputContextAction::CAUSE_TOUCH:
|
|
case InputContextAction::CAUSE_LONGPRESS:
|
|
break;
|
|
case InputContextAction::CAUSE_UNKNOWN_CHROME:
|
|
case InputContextAction::CAUSE_UNKNOWN_DURING_KEYBOARD_INPUT:
|
|
case InputContextAction::CAUSE_UNKNOWN_DURING_NON_KEYBOARD_INPUT:
|
|
// TODO(emilio): We could return some of these though, looking at
|
|
// UserActivation. We may want to suppress focus rings for unknown /
|
|
// programatic focus if the user is interacting with the page but not
|
|
// during keyboard input, or such.
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"These don't get returned by GetFocusMoveActionCause");
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// On Windows, focus rings are only shown when the FLAG_SHOWRING flag is used.
|
|
static bool ShouldShowFocusRingForElement(Element& aElement, int32_t aFlags) {
|
|
if (aFlags & nsIFocusManager::FLAG_SHOWRING) {
|
|
return true;
|
|
}
|
|
#ifndef XP_WIN
|
|
if (aFlags & nsIFocusManager::FLAG_BYMOUSE) {
|
|
return !nsContentUtils::ContentIsLink(&aElement) &&
|
|
!aElement.IsAnyOfHTMLElements(nsGkAtoms::video, nsGkAtoms::audio);
|
|
}
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
/* static */
|
|
void nsFocusManager::NotifyFocusStateChange(nsIContent* aContent,
|
|
nsIContent* aContentToFocus,
|
|
bool aWindowShouldShowFocusRing,
|
|
int32_t aFlags,
|
|
bool aGettingFocus) {
|
|
MOZ_ASSERT_IF(aContentToFocus, !aGettingFocus);
|
|
auto* element = Element::FromNode(aContent);
|
|
if (!element) {
|
|
return;
|
|
}
|
|
|
|
nsIContent* commonAncestor = nullptr;
|
|
if (aContentToFocus && aContentToFocus->IsElement()) {
|
|
commonAncestor = nsContentUtils::GetCommonFlattenedTreeAncestor(
|
|
aContent, aContentToFocus);
|
|
}
|
|
|
|
if (aGettingFocus) {
|
|
EventStates eventStateToAdd = NS_EVENT_STATE_FOCUS;
|
|
if (aWindowShouldShowFocusRing ||
|
|
ShouldShowFocusRingForElement(*element, aFlags)) {
|
|
eventStateToAdd |= NS_EVENT_STATE_FOCUSRING;
|
|
}
|
|
if (aWindowShouldShowFocusRing ||
|
|
ShouldMatchFocusVisible(*element, aFlags)) {
|
|
eventStateToAdd |= NS_EVENT_STATE_FOCUS_VISIBLE;
|
|
}
|
|
element->AddStates(eventStateToAdd);
|
|
} else {
|
|
EventStates eventStateToRemove = NS_EVENT_STATE_FOCUS |
|
|
NS_EVENT_STATE_FOCUSRING |
|
|
NS_EVENT_STATE_FOCUS_VISIBLE;
|
|
element->RemoveStates(eventStateToRemove);
|
|
}
|
|
|
|
for (nsIContent* content = aContent; content && content != commonAncestor;
|
|
content = content->GetFlattenedTreeParent()) {
|
|
Element* element = Element::FromNode(content);
|
|
if (!element) {
|
|
continue;
|
|
}
|
|
|
|
if (aGettingFocus) {
|
|
if (element->State().HasState(NS_EVENT_STATE_FOCUS_WITHIN)) {
|
|
break;
|
|
}
|
|
element->AddStates(NS_EVENT_STATE_FOCUS_WITHIN);
|
|
} else {
|
|
element->RemoveStates(NS_EVENT_STATE_FOCUS_WITHIN);
|
|
}
|
|
}
|
|
}
|
|
|
|
// static
|
|
void nsFocusManager::EnsureCurrentWidgetFocused(CallerType aCallerType) {
|
|
if (!mFocusedWindow || sTestMode) return;
|
|
|
|
// get the main child widget for the focused window and ensure that the
|
|
// platform knows that this widget is focused.
|
|
nsCOMPtr<nsIDocShell> docShell = mFocusedWindow->GetDocShell();
|
|
if (!docShell) {
|
|
return;
|
|
}
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
nsViewManager* vm = presShell->GetViewManager();
|
|
if (!vm) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (!widget) {
|
|
return;
|
|
}
|
|
widget->SetFocus(nsIWidget::Raise::No, aCallerType);
|
|
}
|
|
|
|
void nsFocusManager::ActivateOrDeactivate(nsPIDOMWindowOuter* aWindow,
|
|
bool aActive) {
|
|
if (!aWindow) {
|
|
return;
|
|
}
|
|
|
|
// Inform the DOM window that it has activated or deactivated, so that
|
|
// the active attribute is updated on the window.
|
|
aWindow->ActivateOrDeactivate(aActive);
|
|
|
|
// Send the activate event.
|
|
if (aWindow->GetExtantDoc()) {
|
|
nsContentUtils::DispatchEventOnlyToChrome(
|
|
aWindow->GetExtantDoc(), aWindow->GetCurrentInnerWindow(),
|
|
aActive ? NS_LITERAL_STRING("activate")
|
|
: NS_LITERAL_STRING("deactivate"),
|
|
CanBubble::eYes, Cancelable::eYes, nullptr);
|
|
}
|
|
|
|
// Look for any remote child frames, iterate over them and send the activation
|
|
// notification.
|
|
nsContentUtils::CallOnAllRemoteChildren(
|
|
aWindow, [&aActive](BrowserParent* aBrowserParent) -> CallState {
|
|
Unused << aBrowserParent->SendParentActivated(aActive);
|
|
return CallState::Continue;
|
|
});
|
|
}
|
|
|
|
// Retrieves innerWindowId of the window of the last focused element to
|
|
// log a warning to the website console.
|
|
void LogWarningFullscreenWindowRaise(Element* aElement) {
|
|
nsCOMPtr<nsFrameLoaderOwner> frameLoaderOwner(do_QueryInterface(aElement));
|
|
NS_ENSURE_TRUE_VOID(frameLoaderOwner);
|
|
|
|
RefPtr<nsFrameLoader> frameLoader = frameLoaderOwner->GetFrameLoader();
|
|
NS_ENSURE_TRUE_VOID(frameLoaderOwner);
|
|
|
|
RefPtr<BrowsingContext> browsingContext = frameLoader->GetBrowsingContext();
|
|
NS_ENSURE_TRUE_VOID(browsingContext);
|
|
|
|
WindowGlobalParent* windowGlobalParent =
|
|
browsingContext->Canonical()->GetCurrentWindowGlobal();
|
|
NS_ENSURE_TRUE_VOID(windowGlobalParent);
|
|
|
|
// Log to console
|
|
nsAutoString localizedMsg;
|
|
nsTArray<nsString> params;
|
|
nsresult rv = nsContentUtils::FormatLocalizedString(
|
|
nsContentUtils::eDOM_PROPERTIES, "FullscreenExitWindowFocus", params,
|
|
localizedMsg);
|
|
|
|
NS_ENSURE_SUCCESS_VOID(rv);
|
|
|
|
Unused << nsContentUtils::ReportToConsoleByWindowID(
|
|
localizedMsg, nsIScriptError::warningFlag, NS_LITERAL_CSTRING("DOM"),
|
|
windowGlobalParent->InnerWindowId(),
|
|
windowGlobalParent->GetDocumentURI());
|
|
}
|
|
|
|
void nsFocusManager::SetFocusInner(Element* aNewContent, int32_t aFlags,
|
|
bool aFocusChanged, bool aAdjustWidget) {
|
|
// if the element is not focusable, just return and leave the focus as is
|
|
RefPtr<Element> elementToFocus =
|
|
FlushAndCheckIfFocusable(aNewContent, aFlags);
|
|
if (!elementToFocus) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<BrowsingContext> focusedBrowsingContext = GetFocusedBrowsingContext();
|
|
|
|
// check if the element to focus is a frame (iframe) containing a child
|
|
// document. Frames are never directly focused; instead focusing a frame
|
|
// means focus what is inside the frame. To do this, the descendant content
|
|
// within the frame is retrieved and that will be focused instead.
|
|
nsCOMPtr<nsPIDOMWindowOuter> newWindow;
|
|
nsCOMPtr<nsPIDOMWindowOuter> subWindow = GetContentWindow(elementToFocus);
|
|
if (subWindow) {
|
|
// XXX What if this is an out-of-process iframe?
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1613054
|
|
elementToFocus = GetFocusedDescendant(subWindow, eIncludeAllDescendants,
|
|
getter_AddRefs(newWindow));
|
|
// since a window is being refocused, clear aFocusChanged so that the
|
|
// caret position isn't updated.
|
|
aFocusChanged = false;
|
|
}
|
|
|
|
// unless it was set above, retrieve the window for the element to focus
|
|
if (!newWindow) {
|
|
newWindow = GetCurrentWindow(elementToFocus);
|
|
}
|
|
|
|
// if the element is already focused, just return. Note that this happens
|
|
// after the frame check above so that we compare the element that will be
|
|
// focused rather than the frame it is in.
|
|
if (!newWindow ||
|
|
(newWindow->GetBrowsingContext() == GetFocusedBrowsingContext() &&
|
|
elementToFocus == mFocusedElement)) {
|
|
return;
|
|
}
|
|
|
|
// don't allow focus to be placed in docshells or descendants of docshells
|
|
// that are being destroyed. Also, ensure that the page hasn't been
|
|
// unloaded. The prevents content from being refocused during an unload event.
|
|
nsCOMPtr<nsIDocShell> newDocShell = newWindow->GetDocShell();
|
|
nsCOMPtr<nsIDocShell> docShell = newDocShell;
|
|
while (docShell) {
|
|
bool inUnload;
|
|
docShell->GetIsInUnload(&inUnload);
|
|
if (inUnload) {
|
|
return;
|
|
}
|
|
|
|
bool beingDestroyed;
|
|
docShell->IsBeingDestroyed(&beingDestroyed);
|
|
if (beingDestroyed) {
|
|
return;
|
|
}
|
|
|
|
BrowsingContext* bc = docShell->GetBrowsingContext();
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
docShell->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
docShell = do_QueryInterface(parentDsti);
|
|
if (!docShell && !XRE_IsParentProcess()) {
|
|
// We don't have an in-process parent, but let's see if we have
|
|
// an in-process ancestor or if an out-of-process ancestor
|
|
// is discarded.
|
|
do {
|
|
bc = bc->GetParent();
|
|
if (bc && bc->IsDiscarded()) {
|
|
return;
|
|
}
|
|
} while (bc && !bc->IsInProcess());
|
|
if (bc) {
|
|
docShell = bc->GetDocShell();
|
|
} else {
|
|
docShell = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if the new element is in the same window as the currently focused element
|
|
bool isElementInFocusedWindow =
|
|
(focusedBrowsingContext == newWindow->GetBrowsingContext());
|
|
|
|
if (!isElementInFocusedWindow && newWindow &&
|
|
nsContentUtils::IsHandlingKeyBoardEvent()) {
|
|
if (XRE_IsParentProcess() ||
|
|
(focusedBrowsingContext && focusedBrowsingContext->IsInProcess())) {
|
|
// need to null-check for the XRE_IsParentProcess case
|
|
if (focusedBrowsingContext) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow =
|
|
focusedBrowsingContext->GetDOMWindow();
|
|
MOZ_ASSERT(focusedWindow,
|
|
"BrowsingContext should always have a window here.");
|
|
nsCOMPtr<nsIScriptObjectPrincipal> focused =
|
|
do_QueryInterface(focusedWindow);
|
|
nsCOMPtr<nsIScriptObjectPrincipal> newFocus =
|
|
do_QueryInterface(newWindow);
|
|
nsIPrincipal* focusedPrincipal = focused->GetPrincipal();
|
|
nsIPrincipal* newPrincipal = newFocus->GetPrincipal();
|
|
if (!focusedPrincipal || !newPrincipal) {
|
|
return;
|
|
}
|
|
bool subsumes = false;
|
|
focusedPrincipal->Subsumes(newPrincipal, &subsumes);
|
|
if (!subsumes && !nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
|
|
NS_WARNING("Not allowed to focus the new window!");
|
|
return;
|
|
}
|
|
}
|
|
} else if (focusedBrowsingContext &&
|
|
!nsContentUtils::LegacyIsCallerChromeOrNativeCode()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// to check if the new element is in the active window, compare the
|
|
// new root docshell for the new element with the active window's docshell.
|
|
RefPtr<BrowsingContext> newRootBrowsingContext = nullptr;
|
|
bool isElementInActiveWindow = false;
|
|
if (XRE_IsParentProcess()) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> newRootWindow = nullptr;
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = newWindow->GetDocShell();
|
|
if (dsti) {
|
|
nsCOMPtr<nsIDocShellTreeItem> root;
|
|
dsti->GetInProcessRootTreeItem(getter_AddRefs(root));
|
|
newRootWindow = root ? root->GetWindow() : nullptr;
|
|
|
|
isElementInActiveWindow =
|
|
(mActiveWindow && newRootWindow == mActiveWindow);
|
|
}
|
|
if (newRootWindow) {
|
|
newRootBrowsingContext = newRootWindow->GetBrowsingContext();
|
|
}
|
|
} else {
|
|
// XXX This is wrong for `<iframe mozbrowser>` and for XUL
|
|
// `<browser remote="true">`. See:
|
|
// https://searchfox.org/mozilla-central/rev/8a63fc190b39ed6951abb4aef4a56487a43962bc/dom/base/nsFrameLoader.cpp#229-232
|
|
newRootBrowsingContext = newWindow->GetBrowsingContext()->Top();
|
|
// to check if the new element is in the active window, compare the
|
|
// new root docshell for the new element with the active window's docshell.
|
|
isElementInActiveWindow =
|
|
(GetActiveBrowsingContext() == newRootBrowsingContext);
|
|
}
|
|
|
|
// Exit fullscreen if a website focuses another window
|
|
if (StaticPrefs::full_screen_api_exit_on_windowRaise() &&
|
|
!isElementInActiveWindow &&
|
|
aFlags & (FLAG_RAISE | FLAG_NONSYSTEMCALLER)) {
|
|
if (XRE_IsParentProcess()) {
|
|
if (Document* doc = mActiveWindow ? mActiveWindow->GetDoc() : nullptr) {
|
|
if (doc->GetFullscreenElement()) {
|
|
LogWarningFullscreenWindowRaise(mFocusedElement);
|
|
Document::AsyncExitFullscreen(doc);
|
|
}
|
|
}
|
|
} else {
|
|
BrowsingContext* activeBrowsingContext = GetActiveBrowsingContext();
|
|
if (activeBrowsingContext) {
|
|
nsIDocShell* shell = activeBrowsingContext->GetDocShell();
|
|
if (shell) {
|
|
Document* doc = shell->GetDocument();
|
|
if (doc && doc->GetFullscreenElement()) {
|
|
Document::AsyncExitFullscreen(doc);
|
|
}
|
|
} else {
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
contentChild->SendMaybeExitFullscreen(activeBrowsingContext);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Exit fullscreen if we're focusing a windowed plugin on a non-MacOSX
|
|
// system. We don't control event dispatch to windowed plugins on non-MacOSX,
|
|
// so we can't display the "Press ESC to leave fullscreen mode" warning on
|
|
// key input if a windowed plugin is focused, so just exit fullscreen
|
|
// to guard against phishing.
|
|
#ifndef XP_MACOSX
|
|
if (elementToFocus &&
|
|
nsContentUtils::GetRootDocument(elementToFocus->OwnerDoc())
|
|
->GetFullscreenElement() &&
|
|
nsContentUtils::HasPluginWithUncontrolledEventDispatch(elementToFocus)) {
|
|
nsContentUtils::ReportToConsole(
|
|
nsIScriptError::warningFlag, NS_LITERAL_CSTRING("DOM"),
|
|
elementToFocus->OwnerDoc(), nsContentUtils::eDOM_PROPERTIES,
|
|
"FocusedWindowedPluginWhileFullscreen");
|
|
Document::AsyncExitFullscreen(elementToFocus->OwnerDoc());
|
|
}
|
|
#endif
|
|
|
|
// if the FLAG_NOSWITCHFRAME flag is used, only allow the focus to be
|
|
// shifted away from the current element if the new shell to focus is
|
|
// the same or an ancestor shell of the currently focused shell.
|
|
bool allowFrameSwitch = !(aFlags & FLAG_NOSWITCHFRAME) ||
|
|
IsSameOrAncestor(newWindow, focusedBrowsingContext);
|
|
|
|
// if the element is in the active window, frame switching is allowed and
|
|
// the content is in a visible window, fire blur and focus events.
|
|
bool sendFocusEvent =
|
|
isElementInActiveWindow && allowFrameSwitch && IsWindowVisible(newWindow);
|
|
|
|
// Don't allow to steal the focus from chrome nodes if the caller cannot
|
|
// access them.
|
|
if (sendFocusEvent && mFocusedElement &&
|
|
mFocusedElement->OwnerDoc() != aNewContent->OwnerDoc() &&
|
|
mFocusedElement->NodePrincipal()->IsSystemPrincipal() &&
|
|
!nsContentUtils::LegacyIsCallerNativeCode() &&
|
|
!nsContentUtils::CanCallerAccess(mFocusedElement)) {
|
|
sendFocusEvent = false;
|
|
}
|
|
|
|
LOGCONTENT("Shift Focus: %s", elementToFocus.get());
|
|
LOGFOCUS((" Flags: %x Current Window: %p New Window: %p Current Element: %p",
|
|
aFlags, mFocusedWindow.get(), newWindow.get(),
|
|
mFocusedElement.get()));
|
|
LOGFOCUS((" In Active Window: %d In Focused Window: %d SendFocus: %d",
|
|
isElementInActiveWindow, isElementInFocusedWindow, sendFocusEvent));
|
|
|
|
if (sendFocusEvent) {
|
|
RefPtr<Element> oldFocusedElement = mFocusedElement;
|
|
// return if blurring fails or the focus changes during the blur
|
|
if (focusedBrowsingContext) {
|
|
// if the focus is being moved to another element in the same document,
|
|
// or to a descendant, pass the existing window to Blur so that the
|
|
// current node in the existing window is cleared. If moving to a
|
|
// window elsewhere, we want to maintain the current node in the
|
|
// window but still blur it.
|
|
bool currentIsSameOrAncestor =
|
|
IsSameOrAncestor(focusedBrowsingContext, newWindow);
|
|
// find the common ancestor of the currently focused window and the new
|
|
// window. The ancestor will need to have its currently focused node
|
|
// cleared once the document has been blurred. Otherwise, we'll be in a
|
|
// state where a document is blurred yet the chain of windows above it
|
|
// still points to that document.
|
|
// For instance, in the following frame tree:
|
|
// A
|
|
// B C
|
|
// D
|
|
// D is focused and we want to focus C. Once D has been blurred, we need
|
|
// to clear out the focus in A, otherwise A would still maintain that B
|
|
// was focused, and B that D was focused.
|
|
RefPtr<BrowsingContext> commonAncestor;
|
|
if (!isElementInFocusedWindow) {
|
|
commonAncestor = GetCommonAncestor(newWindow, focusedBrowsingContext);
|
|
}
|
|
|
|
if (!Blur(
|
|
currentIsSameOrAncestor ? focusedBrowsingContext.get() : nullptr,
|
|
commonAncestor ? commonAncestor.get() : nullptr,
|
|
!isElementInFocusedWindow, aAdjustWidget, elementToFocus)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
Focus(newWindow, elementToFocus, aFlags, !isElementInFocusedWindow,
|
|
aFocusChanged, false, aAdjustWidget, oldFocusedElement);
|
|
} else {
|
|
// otherwise, for inactive windows and when the caller cannot steal the
|
|
// focus, update the node in the window, and raise the window if desired.
|
|
if (allowFrameSwitch) {
|
|
AdjustWindowFocus(newWindow->GetBrowsingContext(), true,
|
|
IsWindowVisible(newWindow));
|
|
}
|
|
|
|
// set the focus node and method as needed
|
|
uint32_t focusMethod =
|
|
aFocusChanged ? aFlags & FOCUSMETHODANDRING_MASK
|
|
: newWindow->GetFocusMethod() | (aFlags & FLAG_SHOWRING);
|
|
newWindow->SetFocusedElement(elementToFocus, focusMethod);
|
|
if (aFocusChanged) {
|
|
nsCOMPtr<nsIDocShell> docShell = newWindow->GetDocShell();
|
|
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (presShell && presShell->DidInitialize()) {
|
|
ScrollIntoView(presShell, elementToFocus, aFlags);
|
|
}
|
|
}
|
|
|
|
// update the commands even when inactive so that the attributes for that
|
|
// window are up to date.
|
|
if (allowFrameSwitch)
|
|
newWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
if (aFlags & FLAG_RAISE) {
|
|
if (newRootBrowsingContext) {
|
|
if (XRE_IsParentProcess() || newRootBrowsingContext->IsInProcess()) {
|
|
RaiseWindow(newRootBrowsingContext->GetDOMWindow(),
|
|
aFlags & FLAG_NONSYSTEMCALLER ? CallerType::NonSystem
|
|
: CallerType::System);
|
|
} else {
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
contentChild->SendRaiseWindow(newRootBrowsingContext,
|
|
aFlags & FLAG_NONSYSTEMCALLER
|
|
? CallerType::NonSystem
|
|
: CallerType::System);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool nsFocusManager::IsSameOrAncestor(nsPIDOMWindowOuter* aPossibleAncestor,
|
|
nsPIDOMWindowOuter* aWindow) {
|
|
if (!aWindow || !aPossibleAncestor) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> ancestordsti = aPossibleAncestor->GetDocShell();
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti = aWindow->GetDocShell();
|
|
while (dsti) {
|
|
if (dsti == ancestordsti) return true;
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti;
|
|
dsti->GetInProcessParent(getter_AddRefs(parentDsti));
|
|
dsti.swap(parentDsti);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsFocusManager::IsSameOrAncestor(nsPIDOMWindowOuter* aPossibleAncestor,
|
|
BrowsingContext* aContext) {
|
|
if (!aContext || !aPossibleAncestor) {
|
|
return false;
|
|
}
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
return IsSameOrAncestor(aPossibleAncestor, aContext->GetDOMWindow());
|
|
}
|
|
|
|
return IsSameOrAncestor(aPossibleAncestor->GetBrowsingContext(), aContext);
|
|
}
|
|
|
|
bool nsFocusManager::IsSameOrAncestor(BrowsingContext* aPossibleAncestor,
|
|
nsPIDOMWindowOuter* aWindow) {
|
|
if (!aWindow || !aPossibleAncestor) {
|
|
return false;
|
|
}
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
return IsSameOrAncestor(aPossibleAncestor->GetDOMWindow(), aWindow);
|
|
}
|
|
|
|
return IsSameOrAncestor(aPossibleAncestor, aWindow->GetBrowsingContext());
|
|
}
|
|
|
|
bool nsFocusManager::IsSameOrAncestor(BrowsingContext* aPossibleAncestor,
|
|
BrowsingContext* aContext) {
|
|
if (!aContext || !aPossibleAncestor) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(!XRE_IsParentProcess());
|
|
|
|
while (aContext) {
|
|
if (aPossibleAncestor == aContext) {
|
|
return true;
|
|
}
|
|
// XXX this is wrong for `mozbrowser` and XUL `browser remote=true`.
|
|
aContext = aContext->GetParent();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
mozilla::dom::BrowsingContext* nsFocusManager::GetCommonAncestor(
|
|
nsPIDOMWindowOuter* aWindow, mozilla::dom::BrowsingContext* aContext) {
|
|
NS_ENSURE_TRUE(aWindow && aContext, nullptr);
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti1 = aWindow->GetDocShell();
|
|
NS_ENSURE_TRUE(dsti1, nullptr);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> dsti2 = aContext->GetDocShell();
|
|
NS_ENSURE_TRUE(dsti2, nullptr);
|
|
|
|
AutoTArray<nsIDocShellTreeItem*, 30> parents1, parents2;
|
|
do {
|
|
parents1.AppendElement(dsti1);
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti1;
|
|
dsti1->GetInProcessParent(getter_AddRefs(parentDsti1));
|
|
dsti1.swap(parentDsti1);
|
|
} while (dsti1);
|
|
do {
|
|
parents2.AppendElement(dsti2);
|
|
nsCOMPtr<nsIDocShellTreeItem> parentDsti2;
|
|
dsti2->GetInProcessParent(getter_AddRefs(parentDsti2));
|
|
dsti2.swap(parentDsti2);
|
|
} while (dsti2);
|
|
|
|
uint32_t pos1 = parents1.Length();
|
|
uint32_t pos2 = parents2.Length();
|
|
nsIDocShellTreeItem* parent = nullptr;
|
|
uint32_t len;
|
|
for (len = std::min(pos1, pos2); len > 0; --len) {
|
|
nsIDocShellTreeItem* child1 = parents1.ElementAt(--pos1);
|
|
nsIDocShellTreeItem* child2 = parents2.ElementAt(--pos2);
|
|
if (child1 != child2) {
|
|
break;
|
|
}
|
|
parent = child1;
|
|
}
|
|
|
|
return parent ? parent->GetBrowsingContext() : nullptr;
|
|
}
|
|
|
|
BrowsingContext* bc1 = aWindow->GetBrowsingContext();
|
|
NS_ENSURE_TRUE(bc1, nullptr);
|
|
|
|
BrowsingContext* bc2 = aContext;
|
|
|
|
AutoTArray<BrowsingContext*, 30> parents1, parents2;
|
|
do {
|
|
parents1.AppendElement(bc1);
|
|
bc1 = bc1->GetParent();
|
|
} while (bc1);
|
|
do {
|
|
parents2.AppendElement(bc2);
|
|
bc2 = bc2->GetParent();
|
|
} while (bc2);
|
|
|
|
uint32_t pos1 = parents1.Length();
|
|
uint32_t pos2 = parents2.Length();
|
|
BrowsingContext* parent = nullptr;
|
|
uint32_t len;
|
|
for (len = std::min(pos1, pos2); len > 0; --len) {
|
|
BrowsingContext* child1 = parents1.ElementAt(--pos1);
|
|
BrowsingContext* child2 = parents2.ElementAt(--pos2);
|
|
if (child1 != child2) {
|
|
break;
|
|
}
|
|
parent = child1;
|
|
}
|
|
|
|
return parent;
|
|
}
|
|
|
|
void nsFocusManager::AdjustWindowFocus(BrowsingContext* aBrowsingContext,
|
|
bool aCheckPermission, bool aIsVisible) {
|
|
BrowsingContext* bc = aBrowsingContext;
|
|
while (bc) {
|
|
// get the containing <iframe> or equivalent element so that it can be
|
|
// focused below.
|
|
nsCOMPtr<Element> frameElement = bc->GetEmbedderElement();
|
|
|
|
if (!frameElement && XRE_IsContentProcess()) {
|
|
// The containing <iframe> isn't in this process and we are in a child
|
|
// process, so continue the walk in another process.
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
contentChild->SendAdjustWindowFocus(bc, false, aIsVisible);
|
|
return;
|
|
}
|
|
|
|
BrowsingContext* parent = bc->GetParent();
|
|
if (!parent && XRE_IsParentProcess()) {
|
|
CanonicalBrowsingContext* canonical = bc->Canonical();
|
|
RefPtr<WindowGlobalParent> embedder =
|
|
canonical->GetEmbedderWindowGlobal();
|
|
if (embedder) {
|
|
parent = embedder->BrowsingContext();
|
|
}
|
|
}
|
|
bc = parent;
|
|
if (!bc) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = bc->GetDOMWindow();
|
|
MOZ_ASSERT(window);
|
|
// if the parent window is visible but the original window was not, then we
|
|
// have likely moved up and out from a hidden tab to the browser window, or
|
|
// a similar such arrangement. Stop adjusting the current nodes.
|
|
if (IsWindowVisible(window) != aIsVisible) {
|
|
return;
|
|
}
|
|
|
|
// When aCheckPermission is true, we should check whether the caller can
|
|
// access the window or not. If it cannot access, we should stop the
|
|
// adjusting.
|
|
if (aCheckPermission && !nsContentUtils::LegacyIsCallerNativeCode() &&
|
|
!nsContentUtils::CanCallerAccess(window->GetCurrentInnerWindow())) {
|
|
return;
|
|
}
|
|
|
|
window->SetFocusedElement(frameElement);
|
|
}
|
|
}
|
|
|
|
bool nsFocusManager::IsWindowVisible(nsPIDOMWindowOuter* aWindow) {
|
|
if (!aWindow || aWindow->IsFrozen()) return false;
|
|
|
|
// Check if the inner window is frozen as well. This can happen when a focus
|
|
// change occurs while restoring a previous page.
|
|
nsPIDOMWindowInner* innerWindow = aWindow->GetCurrentInnerWindow();
|
|
if (!innerWindow || innerWindow->IsFrozen()) return false;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(docShell));
|
|
if (!baseWin) return false;
|
|
|
|
bool visible = false;
|
|
baseWin->GetVisibility(&visible);
|
|
return visible;
|
|
}
|
|
|
|
bool nsFocusManager::IsNonFocusableRoot(nsIContent* aContent) {
|
|
MOZ_ASSERT(aContent, "aContent must not be NULL");
|
|
MOZ_ASSERT(aContent->IsInComposedDoc(), "aContent must be in a document");
|
|
|
|
// If aContent is in designMode, the root element is not focusable.
|
|
// NOTE: in designMode, most elements are not focusable, just the document is
|
|
// focusable.
|
|
// Also, if aContent is not editable but it isn't in designMode, it's not
|
|
// focusable.
|
|
// And in userfocusignored context nothing is focusable.
|
|
Document* doc = aContent->GetComposedDoc();
|
|
NS_ASSERTION(doc, "aContent must have current document");
|
|
return aContent == doc->GetRootElement() &&
|
|
(doc->HasFlag(NODE_IS_EDITABLE) || !aContent->IsEditable());
|
|
}
|
|
|
|
Element* nsFocusManager::FlushAndCheckIfFocusable(Element* aElement,
|
|
uint32_t aFlags) {
|
|
if (!aElement) return nullptr;
|
|
|
|
nsCOMPtr<Document> doc = aElement->GetComposedDoc();
|
|
// can't focus elements that are not in documents
|
|
if (!doc) {
|
|
LOGCONTENT("Cannot focus %s because content not in document", aElement)
|
|
return nullptr;
|
|
}
|
|
|
|
// Make sure that our frames are up to date while ensuring the presshell is
|
|
// also initialized in case we come from a script calling focus() early.
|
|
mEventHandlingNeedsFlush = false;
|
|
doc->FlushPendingNotifications(FlushType::EnsurePresShellInitAndFrames);
|
|
|
|
// this is a special case for some XUL elements or input number, where an
|
|
// anonymous child is actually focusable and not the element itself.
|
|
if (RefPtr<Element> redirectedFocus = GetRedirectedFocus(aElement)) {
|
|
return FlushAndCheckIfFocusable(redirectedFocus, aFlags);
|
|
}
|
|
|
|
PresShell* presShell = doc->GetPresShell();
|
|
if (!presShell) {
|
|
return nullptr;
|
|
}
|
|
|
|
// the root content can always be focused,
|
|
// except in userfocusignored context.
|
|
if (aElement == doc->GetRootElement()) {
|
|
return aElement;
|
|
}
|
|
|
|
// cannot focus content in print preview mode. Only the root can be focused.
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
if (presContext &&
|
|
presContext->Type() == nsPresContext::eContext_PrintPreview) {
|
|
LOGCONTENT("Cannot focus %s while in print preview", aElement)
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* frame = aElement->GetPrimaryFrame();
|
|
if (!frame) {
|
|
LOGCONTENT("Cannot focus %s as it has no frame", aElement)
|
|
return nullptr;
|
|
}
|
|
|
|
if (aElement->IsHTMLElement(nsGkAtoms::area)) {
|
|
// HTML areas do not have their own frame, and the img frame we get from
|
|
// GetPrimaryFrame() is not relevant as to whether it is focusable or
|
|
// not, so we have to do all the relevant checks manually for them.
|
|
return frame->IsVisibleConsideringAncestors() && aElement->IsFocusable()
|
|
? aElement
|
|
: nullptr;
|
|
}
|
|
|
|
// if this is a child frame content node, check if it is visible and
|
|
// call the content node's IsFocusable method instead of the frame's
|
|
// IsFocusable method. This skips checking the style system and ensures that
|
|
// offscreen browsers can still be focused.
|
|
Document* subdoc = doc->GetSubDocumentFor(aElement);
|
|
if (subdoc && IsWindowVisible(subdoc->GetWindow())) {
|
|
const nsStyleUI* ui = frame->StyleUI();
|
|
int32_t tabIndex = (ui->mUserFocus == StyleUserFocus::Ignore ||
|
|
ui->mUserFocus == StyleUserFocus::None)
|
|
? -1
|
|
: 0;
|
|
return aElement->IsFocusable(&tabIndex, aFlags & FLAG_BYMOUSE) ? aElement
|
|
: nullptr;
|
|
}
|
|
|
|
return frame->IsFocusable(nullptr, aFlags & FLAG_BYMOUSE) ? aElement
|
|
: nullptr;
|
|
}
|
|
|
|
bool nsFocusManager::Blur(BrowsingContext* aBrowsingContextToClear,
|
|
BrowsingContext* aAncestorBrowsingContextToFocus,
|
|
bool aIsLeavingDocument, bool aAdjustWidget,
|
|
nsIContent* aContentToFocus) {
|
|
if (XRE_IsParentProcess()) {
|
|
return BlurImpl(aBrowsingContextToClear, aAncestorBrowsingContextToFocus,
|
|
aIsLeavingDocument, aAdjustWidget, aContentToFocus);
|
|
}
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
bool windowToClearHandled = false;
|
|
bool ancestorWindowToFocusHandled = false;
|
|
|
|
RefPtr<BrowsingContext> focusedBrowsingContext = GetFocusedBrowsingContext();
|
|
if (focusedBrowsingContext && focusedBrowsingContext->IsDiscarded()) {
|
|
focusedBrowsingContext = nullptr;
|
|
}
|
|
if (!focusedBrowsingContext) {
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
if (aBrowsingContextToClear && aBrowsingContextToClear->IsDiscarded()) {
|
|
aBrowsingContextToClear = nullptr;
|
|
}
|
|
if (aAncestorBrowsingContextToFocus &&
|
|
aAncestorBrowsingContextToFocus->IsDiscarded()) {
|
|
aAncestorBrowsingContextToFocus = nullptr;
|
|
}
|
|
// XXX should more early returns from BlurImpl be hoisted here to avoid
|
|
// processing aBrowsingContextToClear and aAncestorBrowsingContextToFocus in
|
|
// other processes when BlurImpl returns early in this process? Or should the
|
|
// IPC messages for those be sent by BlurImpl itself, in which case they could
|
|
// arrive late?
|
|
if (focusedBrowsingContext->IsInProcess()) {
|
|
if (aBrowsingContextToClear && !aBrowsingContextToClear->IsInProcess()) {
|
|
MOZ_RELEASE_ASSERT(!(aAncestorBrowsingContextToFocus &&
|
|
!aAncestorBrowsingContextToFocus->IsInProcess()),
|
|
"Both aBrowsingContextToClear and "
|
|
"aAncestorBrowsingContextToFocus are "
|
|
"out-of-process.");
|
|
contentChild->SendSetFocusedElement(aBrowsingContextToClear, false);
|
|
}
|
|
if (aAncestorBrowsingContextToFocus &&
|
|
!aAncestorBrowsingContextToFocus->IsInProcess()) {
|
|
contentChild->SendSetFocusedElement(aAncestorBrowsingContextToFocus,
|
|
true);
|
|
}
|
|
return BlurImpl(aBrowsingContextToClear, aAncestorBrowsingContextToFocus,
|
|
aIsLeavingDocument, aAdjustWidget, aContentToFocus);
|
|
}
|
|
if (aBrowsingContextToClear && aBrowsingContextToClear->IsInProcess()) {
|
|
nsPIDOMWindowOuter* windowToClear = aBrowsingContextToClear->GetDOMWindow();
|
|
MOZ_ASSERT(windowToClear);
|
|
windowToClear->SetFocusedElement(nullptr);
|
|
windowToClearHandled = true;
|
|
}
|
|
if (aAncestorBrowsingContextToFocus &&
|
|
aAncestorBrowsingContextToFocus->IsInProcess()) {
|
|
nsPIDOMWindowOuter* ancestorWindowToFocus =
|
|
aAncestorBrowsingContextToFocus->GetDOMWindow();
|
|
MOZ_ASSERT(ancestorWindowToFocus);
|
|
ancestorWindowToFocus->SetFocusedElement(nullptr, 0, true);
|
|
ancestorWindowToFocusHandled = true;
|
|
}
|
|
contentChild->SendBlurToParent(
|
|
focusedBrowsingContext, aBrowsingContextToClear,
|
|
aAncestorBrowsingContextToFocus, aIsLeavingDocument, aAdjustWidget,
|
|
windowToClearHandled, ancestorWindowToFocusHandled);
|
|
return true;
|
|
}
|
|
|
|
void nsFocusManager::BlurFromOtherProcess(
|
|
mozilla::dom::BrowsingContext* aFocusedBrowsingContext,
|
|
mozilla::dom::BrowsingContext* aBrowsingContextToClear,
|
|
mozilla::dom::BrowsingContext* aAncestorBrowsingContextToFocus,
|
|
bool aIsLeavingDocument, bool aAdjustWidget) {
|
|
if (aFocusedBrowsingContext != GetFocusedBrowsingContext()) {
|
|
return;
|
|
}
|
|
BlurImpl(aBrowsingContextToClear, aAncestorBrowsingContextToFocus,
|
|
aIsLeavingDocument, aAdjustWidget, nullptr);
|
|
}
|
|
|
|
bool nsFocusManager::BlurImpl(BrowsingContext* aBrowsingContextToClear,
|
|
BrowsingContext* aAncestorBrowsingContextToFocus,
|
|
bool aIsLeavingDocument, bool aAdjustWidget,
|
|
nsIContent* aContentToFocus) {
|
|
LOGFOCUS(("<<Blur begin>>"));
|
|
|
|
// hold a reference to the focused content, which may be null
|
|
RefPtr<Element> element = mFocusedElement;
|
|
if (element) {
|
|
if (!element->IsInComposedDoc()) {
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
if (element == mFirstBlurEvent) return true;
|
|
}
|
|
|
|
RefPtr<BrowsingContext> focusedBrowsingContext = GetFocusedBrowsingContext();
|
|
// hold a reference to the focused window
|
|
nsCOMPtr<nsPIDOMWindowOuter> window;
|
|
if (focusedBrowsingContext) {
|
|
window = focusedBrowsingContext->GetDOMWindow();
|
|
}
|
|
if (!window) {
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
|
|
if (!docShell) {
|
|
mFocusedWindow = nullptr;
|
|
// Setting focused BrowsingContext to nullptr to avoid leaking in print
|
|
// preview.
|
|
SetFocusedBrowsingContext(nullptr);
|
|
mFocusedElement = nullptr;
|
|
return true;
|
|
}
|
|
|
|
// Keep a ref to presShell since dispatching the DOM event may cause
|
|
// the document to be destroyed.
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
mFocusedElement = nullptr;
|
|
mFocusedWindow = nullptr;
|
|
// Setting focused BrowsingContext to nullptr to avoid leaking in print
|
|
// preview.
|
|
SetFocusedBrowsingContext(nullptr);
|
|
return true;
|
|
}
|
|
|
|
bool clearFirstBlurEvent = false;
|
|
if (!mFirstBlurEvent) {
|
|
mFirstBlurEvent = element;
|
|
clearFirstBlurEvent = true;
|
|
}
|
|
|
|
nsPresContext* focusedPresContext =
|
|
GetActiveBrowsingContext() ? presShell->GetPresContext() : nullptr;
|
|
IMEStateManager::OnChangeFocus(focusedPresContext, nullptr,
|
|
GetFocusMoveActionCause(0));
|
|
|
|
// now adjust the actual focus, by clearing the fields in the focus manager
|
|
// and in the window.
|
|
mFocusedElement = nullptr;
|
|
bool shouldShowFocusRing = window->ShouldShowFocusRing();
|
|
if (aBrowsingContextToClear) {
|
|
nsPIDOMWindowOuter* windowToClear = aBrowsingContextToClear->GetDOMWindow();
|
|
if (windowToClear) {
|
|
windowToClear->SetFocusedElement(nullptr);
|
|
}
|
|
}
|
|
|
|
LOGCONTENT("Element %s has been blurred", element.get());
|
|
|
|
// Don't fire blur event on the root content which isn't editable.
|
|
bool sendBlurEvent =
|
|
element && element->IsInComposedDoc() && !IsNonFocusableRoot(element);
|
|
if (element) {
|
|
if (sendBlurEvent) {
|
|
NotifyFocusStateChange(element, aContentToFocus, shouldShowFocusRing, 0,
|
|
false);
|
|
}
|
|
|
|
// if an object/plug-in/remote browser is being blurred, move the system
|
|
// focus to the parent window, otherwise events will still get fired at the
|
|
// plugin. But don't do this if we are blurring due to the window being
|
|
// lowered, otherwise, the parent window can get raised again.
|
|
if (GetActiveBrowsingContext()) {
|
|
nsIFrame* contentFrame = element->GetPrimaryFrame();
|
|
nsIObjectFrame* objectFrame = do_QueryFrame(contentFrame);
|
|
if (aAdjustWidget && objectFrame && !sTestMode) {
|
|
if (XRE_IsContentProcess()) {
|
|
// set focus to the top level window via the chrome process.
|
|
nsCOMPtr<nsIBrowserChild> browserChild = docShell->GetBrowserChild();
|
|
if (browserChild) {
|
|
static_cast<BrowserChild*>(browserChild.get())
|
|
->SendDispatchFocusToTopLevelWindow();
|
|
}
|
|
} else {
|
|
// note that the presshell's widget is being retrieved here, not the
|
|
// one for the object frame.
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) {
|
|
// set focus to the top level window but don't raise it.
|
|
widget->SetFocus(nsIWidget::Raise::No, CallerType::System);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool windowBeingLowered = !aBrowsingContextToClear &&
|
|
!aAncestorBrowsingContextToFocus &&
|
|
aIsLeavingDocument && aAdjustWidget;
|
|
// if the object being blurred is a remote browser, deactivate remote
|
|
// content
|
|
if (BrowserParent* remote = BrowserParent::GetFrom(element)) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
// First, let's deactivate all out-of-process iframes.
|
|
BrowsingContext* topLevelBrowsingContext = remote->GetBrowsingContext();
|
|
topLevelBrowsingContext->PreOrderWalk([&](BrowsingContext* aContext) {
|
|
WindowGlobalParent* windowGlobalParent =
|
|
aContext->Canonical()->GetCurrentWindowGlobal();
|
|
if (windowGlobalParent) {
|
|
RefPtr<BrowserParent> browserParent =
|
|
windowGlobalParent->GetBrowserParent();
|
|
if (browserParent) {
|
|
browserParent->Deactivate(windowBeingLowered);
|
|
LOGFOCUS(("OOP iframe remote browser deactivated %p, %d", remote,
|
|
windowBeingLowered));
|
|
}
|
|
}
|
|
});
|
|
|
|
// Now deactivate the top-level Web page.
|
|
remote->Deactivate(windowBeingLowered);
|
|
LOGFOCUS(("Top-level Remote browser deactivated %p, %d", remote,
|
|
windowBeingLowered));
|
|
}
|
|
|
|
// Same as above but for out-of-process iframes
|
|
if (BrowserBridgeChild* bbc = BrowserBridgeChild::GetFrom(element)) {
|
|
bbc->Deactivate(windowBeingLowered);
|
|
LOGFOCUS(("Out-of-process iframe deactivated %p, %d", bbc,
|
|
windowBeingLowered));
|
|
}
|
|
}
|
|
|
|
bool result = true;
|
|
if (sendBlurEvent) {
|
|
// if there is an active window, update commands. If there isn't an active
|
|
// window, then this was a blur caused by the active window being lowered,
|
|
// so there is no need to update the commands
|
|
if (GetActiveBrowsingContext()) {
|
|
window->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
}
|
|
|
|
SendFocusOrBlurEvent(eBlur, presShell, element->GetComposedDoc(), element,
|
|
1, false, false, aContentToFocus);
|
|
}
|
|
|
|
// if we are leaving the document or the window was lowered, make the caret
|
|
// invisible.
|
|
if (aIsLeavingDocument || !GetActiveBrowsingContext()) {
|
|
SetCaretVisible(presShell, false, nullptr);
|
|
}
|
|
|
|
RefPtr<AccessibleCaretEventHub> eventHub =
|
|
presShell->GetAccessibleCaretEventHub();
|
|
if (eventHub) {
|
|
eventHub->NotifyBlur(aIsLeavingDocument || !GetActiveBrowsingContext());
|
|
}
|
|
|
|
// at this point, it is expected that this window will be still be
|
|
// focused, but the focused element will be null, as it was cleared before
|
|
// the event. If this isn't the case, then something else was focused during
|
|
// the blur event above and we should just return. However, if
|
|
// aIsLeavingDocument is set, a new document is desired, so make sure to
|
|
// blur the document and window.
|
|
if (GetFocusedBrowsingContext() != window->GetBrowsingContext() ||
|
|
(mFocusedElement != nullptr && !aIsLeavingDocument)) {
|
|
result = false;
|
|
} else if (aIsLeavingDocument) {
|
|
window->TakeFocus(false, 0);
|
|
|
|
// clear the focus so that the ancestor frame hierarchy is in the correct
|
|
// state. Pass true because aAncestorBrowsingContextToFocus is thought to be
|
|
// focused at this point.
|
|
if (aAncestorBrowsingContextToFocus) {
|
|
nsPIDOMWindowOuter* ancestorWindowToFocus =
|
|
aAncestorBrowsingContextToFocus->GetDOMWindow();
|
|
if (ancestorWindowToFocus) {
|
|
ancestorWindowToFocus->SetFocusedElement(nullptr, 0, true);
|
|
}
|
|
}
|
|
|
|
SetFocusedWindowInternal(nullptr);
|
|
mFocusedElement = nullptr;
|
|
|
|
// pass 1 for the focus method when calling SendFocusOrBlurEvent just so
|
|
// that the check is made for suppressed documents. Check to ensure that
|
|
// the document isn't null in case someone closed it during the blur above
|
|
Document* doc = window->GetExtantDoc();
|
|
if (doc) {
|
|
SendFocusOrBlurEvent(eBlur, presShell, doc, ToSupports(doc), 1, false);
|
|
}
|
|
if (!GetFocusedBrowsingContext()) {
|
|
SendFocusOrBlurEvent(eBlur, presShell, doc,
|
|
window->GetCurrentInnerWindow(), 1, false);
|
|
}
|
|
|
|
// check if a different window was focused
|
|
result = (!GetFocusedBrowsingContext() && GetActiveBrowsingContext());
|
|
} else if (GetActiveBrowsingContext()) {
|
|
// Otherwise, the blur of the element without blurring the document
|
|
// occurred normally. Call UpdateCaret to redisplay the caret at the right
|
|
// location within the document. This is needed to ensure that the caret
|
|
// used for caret browsing is made visible again when an input field is
|
|
// blurred.
|
|
UpdateCaret(false, true, nullptr);
|
|
}
|
|
|
|
if (clearFirstBlurEvent) mFirstBlurEvent = nullptr;
|
|
|
|
return result;
|
|
}
|
|
|
|
void nsFocusManager::ActivateRemoteFrameIfNeeded(Element& aElement) {
|
|
MOZ_DIAGNOSTIC_ASSERT(mFocusedElement == &aElement);
|
|
if (BrowserParent* remote = BrowserParent::GetFrom(&aElement)) {
|
|
remote->Activate();
|
|
LOGFOCUS(("Remote browser activated %p", remote));
|
|
}
|
|
|
|
// Same as above but for out-of-process iframes
|
|
if (BrowserBridgeChild* bbc = BrowserBridgeChild::GetFrom(&aElement)) {
|
|
bbc->Activate();
|
|
LOGFOCUS(("Out-of-process iframe activated %p", bbc));
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::Focus(nsPIDOMWindowOuter* aWindow, Element* aElement,
|
|
uint32_t aFlags, bool aIsNewDocument,
|
|
bool aFocusChanged, bool aWindowRaised,
|
|
bool aAdjustWidget, nsIContent* aContentLostFocus) {
|
|
LOGFOCUS(("<<Focus begin>>"));
|
|
|
|
if (!aWindow) return;
|
|
|
|
if (aElement && (aElement == mFirstFocusEvent || aElement == mFirstBlurEvent))
|
|
return;
|
|
|
|
// Keep a reference to the presShell since dispatching the DOM event may
|
|
// cause the document to be destroyed.
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (!docShell) return;
|
|
|
|
RefPtr<PresShell> presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
// If the focus actually changed, set the focus method (mouse, keyboard, etc).
|
|
// Otherwise, just get the current focus method and use that. This ensures
|
|
// that the method is set during the document and window focus events.
|
|
uint32_t focusMethod =
|
|
aFocusChanged ? aFlags & FOCUSMETHODANDRING_MASK
|
|
: aWindow->GetFocusMethod() | (aFlags & FLAG_SHOWRING);
|
|
|
|
if (!IsWindowVisible(aWindow)) {
|
|
// if the window isn't visible, for instance because it is a hidden tab,
|
|
// update the current focus and scroll it into view but don't do anything
|
|
// else
|
|
if (FlushAndCheckIfFocusable(aElement, aFlags)) {
|
|
aWindow->SetFocusedElement(aElement, focusMethod);
|
|
if (aFocusChanged) {
|
|
ScrollIntoView(presShell, aElement, aFlags);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
bool clearFirstFocusEvent = false;
|
|
if (!mFirstFocusEvent) {
|
|
mFirstFocusEvent = aElement;
|
|
clearFirstFocusEvent = true;
|
|
}
|
|
|
|
LOGCONTENT("Element %s has been focused", aElement);
|
|
|
|
if (MOZ_LOG_TEST(gFocusLog, LogLevel::Debug)) {
|
|
Document* docm = aWindow->GetExtantDoc();
|
|
if (docm) {
|
|
LOGCONTENT(" from %s", docm->GetRootElement());
|
|
}
|
|
LOGFOCUS((" [Newdoc: %d FocusChanged: %d Raised: %d Flags: %x]",
|
|
aIsNewDocument, aFocusChanged, aWindowRaised, aFlags));
|
|
}
|
|
|
|
if (aIsNewDocument) {
|
|
// if this is a new document, update the parent chain of frames so that
|
|
// focus can be traversed from the top level down to the newly focused
|
|
// window.
|
|
AdjustWindowFocus(aWindow->GetBrowsingContext(), false,
|
|
IsWindowVisible(aWindow));
|
|
}
|
|
|
|
// indicate that the window has taken focus.
|
|
if (aWindow->TakeFocus(true, focusMethod)) aIsNewDocument = true;
|
|
|
|
SetFocusedWindowInternal(aWindow);
|
|
|
|
// Update the system focus by focusing the root widget. But avoid this
|
|
// if 1) aAdjustWidget is false or 2) aElement is a plugin that has its
|
|
// own widget and is either already focused or is about to be focused.
|
|
nsCOMPtr<nsIWidget> objectFrameWidget;
|
|
if (aElement) {
|
|
nsIFrame* contentFrame = aElement->GetPrimaryFrame();
|
|
nsIObjectFrame* objectFrame = do_QueryFrame(contentFrame);
|
|
if (objectFrame) objectFrameWidget = objectFrame->GetWidget();
|
|
}
|
|
if (aAdjustWidget && !objectFrameWidget && !sTestMode) {
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget)
|
|
widget->SetFocus(nsIWidget::Raise::No, aFlags & FLAG_NONSYSTEMCALLER
|
|
? CallerType::NonSystem
|
|
: CallerType::System);
|
|
}
|
|
}
|
|
|
|
// if switching to a new document, first fire the focus event on the
|
|
// document and then the window.
|
|
if (aIsNewDocument) {
|
|
Document* doc = aWindow->GetExtantDoc();
|
|
// The focus change should be notified to IMEStateManager from here if
|
|
// the focused element is a designMode editor since any content won't
|
|
// receive focus event.
|
|
if (doc && doc->HasFlag(NODE_IS_EDITABLE)) {
|
|
IMEStateManager::OnChangeFocus(presShell->GetPresContext(), nullptr,
|
|
GetFocusMoveActionCause(aFlags));
|
|
}
|
|
if (doc) {
|
|
SendFocusOrBlurEvent(eFocus, presShell, doc, ToSupports(doc),
|
|
aFlags & FOCUSMETHOD_MASK, aWindowRaised);
|
|
}
|
|
if (GetFocusedBrowsingContext() == aWindow->GetBrowsingContext() &&
|
|
mFocusedElement == nullptr) {
|
|
SendFocusOrBlurEvent(eFocus, presShell, doc,
|
|
aWindow->GetCurrentInnerWindow(),
|
|
aFlags & FOCUSMETHOD_MASK, aWindowRaised);
|
|
}
|
|
}
|
|
|
|
// check to ensure that the element is still focusable, and that nothing
|
|
// else was focused during the events above.
|
|
if (FlushAndCheckIfFocusable(aElement, aFlags) &&
|
|
GetFocusedBrowsingContext() == aWindow->GetBrowsingContext() &&
|
|
mFocusedElement == nullptr) {
|
|
mFocusedElement = aElement;
|
|
|
|
nsIContent* focusedNode = aWindow->GetFocusedElement();
|
|
bool isRefocus = focusedNode && focusedNode == aElement;
|
|
|
|
aWindow->SetFocusedElement(aElement, focusMethod);
|
|
|
|
// if the focused element changed, scroll it into view
|
|
if (aElement && aFocusChanged) {
|
|
ScrollIntoView(presShell, aElement, aFlags);
|
|
}
|
|
|
|
bool sendFocusEvent = aElement && aElement->IsInComposedDoc() &&
|
|
!IsNonFocusableRoot(aElement);
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
if (sendFocusEvent) {
|
|
NotifyFocusStateChange(aElement, nullptr, aWindow->ShouldShowFocusRing(),
|
|
aFlags, /* aGettingFocus = */ true);
|
|
|
|
// if this is an object/plug-in/remote browser, focus its widget. Note
|
|
// that we might no longer be in the same document, due to the events we
|
|
// fired above when aIsNewDocument.
|
|
if (presShell->GetDocument() == aElement->GetComposedDoc()) {
|
|
if (aAdjustWidget && objectFrameWidget && !sTestMode) {
|
|
objectFrameWidget->SetFocus(nsIWidget::Raise::No,
|
|
aFlags & FLAG_NONSYSTEMCALLER
|
|
? CallerType::NonSystem
|
|
: CallerType::System);
|
|
}
|
|
|
|
// if the object being focused is a remote browser, activate remote
|
|
// content
|
|
ActivateRemoteFrameIfNeeded(*aElement);
|
|
}
|
|
|
|
IMEStateManager::OnChangeFocus(presContext, aElement,
|
|
GetFocusMoveActionCause(aFlags));
|
|
|
|
// as long as this focus wasn't because a window was raised, update the
|
|
// commands
|
|
// XXXndeakin P2 someone could adjust the focus during the update
|
|
if (!aWindowRaised)
|
|
aWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
|
|
SendFocusOrBlurEvent(eFocus, presShell, aElement->GetComposedDoc(),
|
|
aElement, aFlags & FOCUSMETHOD_MASK, aWindowRaised,
|
|
isRefocus, aContentLostFocus);
|
|
} else {
|
|
IMEStateManager::OnChangeFocus(presContext, nullptr,
|
|
GetFocusMoveActionCause(aFlags));
|
|
if (!aWindowRaised) {
|
|
aWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
}
|
|
}
|
|
} else {
|
|
// If the window focus event (fired above when aIsNewDocument) caused
|
|
// the plugin not to be focusable, update the system focus by focusing
|
|
// the root widget.
|
|
if (aAdjustWidget && objectFrameWidget &&
|
|
GetFocusedBrowsingContext() == aWindow->GetBrowsingContext() &&
|
|
mFocusedElement == nullptr && !sTestMode) {
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) {
|
|
widget->SetFocus(nsIWidget::Raise::No, aFlags & FLAG_NONSYSTEMCALLER
|
|
? CallerType::NonSystem
|
|
: CallerType::System);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mFocusedElement) {
|
|
// When there is no focused element, IMEStateManager needs to adjust IME
|
|
// enabled state with the document.
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
IMEStateManager::OnChangeFocus(presContext, nullptr,
|
|
GetFocusMoveActionCause(aFlags));
|
|
}
|
|
|
|
if (!aWindowRaised)
|
|
aWindow->UpdateCommands(NS_LITERAL_STRING("focus"), nullptr, 0);
|
|
}
|
|
|
|
// update the caret visibility and position to match the newly focused
|
|
// element. However, don't update the position if this was a focus due to a
|
|
// mouse click as the selection code would already have moved the caret as
|
|
// needed. If this is a different document than was focused before, also
|
|
// update the caret's visibility. If this is the same document, the caret
|
|
// visibility should be the same as before so there is no need to update it.
|
|
if (mFocusedElement == aElement)
|
|
UpdateCaret(aFocusChanged && !(aFlags & FLAG_BYMOUSE), aIsNewDocument,
|
|
mFocusedElement);
|
|
|
|
if (clearFirstFocusEvent) mFirstFocusEvent = nullptr;
|
|
}
|
|
|
|
class FocusBlurEvent : public Runnable {
|
|
public:
|
|
FocusBlurEvent(nsISupports* aTarget, EventMessage aEventMessage,
|
|
nsPresContext* aContext, bool aWindowRaised, bool aIsRefocus,
|
|
EventTarget* aRelatedTarget)
|
|
: mozilla::Runnable("FocusBlurEvent"),
|
|
mTarget(aTarget),
|
|
mContext(aContext),
|
|
mEventMessage(aEventMessage),
|
|
mWindowRaised(aWindowRaised),
|
|
mIsRefocus(aIsRefocus),
|
|
mRelatedTarget(aRelatedTarget) {}
|
|
|
|
NS_IMETHOD Run() override {
|
|
InternalFocusEvent event(true, mEventMessage);
|
|
event.mFlags.mBubbles = false;
|
|
event.mFlags.mCancelable = false;
|
|
event.mFromRaise = mWindowRaised;
|
|
event.mIsRefocus = mIsRefocus;
|
|
event.mRelatedTarget = mRelatedTarget;
|
|
return EventDispatcher::Dispatch(mTarget, mContext, &event);
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> mTarget;
|
|
RefPtr<nsPresContext> mContext;
|
|
EventMessage mEventMessage;
|
|
bool mWindowRaised;
|
|
bool mIsRefocus;
|
|
nsCOMPtr<EventTarget> mRelatedTarget;
|
|
};
|
|
|
|
class FocusInOutEvent : public Runnable {
|
|
public:
|
|
FocusInOutEvent(nsISupports* aTarget, EventMessage aEventMessage,
|
|
nsPresContext* aContext,
|
|
nsPIDOMWindowOuter* aOriginalFocusedWindow,
|
|
nsIContent* aOriginalFocusedContent,
|
|
EventTarget* aRelatedTarget)
|
|
: mozilla::Runnable("FocusInOutEvent"),
|
|
mTarget(aTarget),
|
|
mContext(aContext),
|
|
mEventMessage(aEventMessage),
|
|
mOriginalFocusedWindow(aOriginalFocusedWindow),
|
|
mOriginalFocusedContent(aOriginalFocusedContent),
|
|
mRelatedTarget(aRelatedTarget) {}
|
|
|
|
NS_IMETHOD Run() override {
|
|
nsCOMPtr<nsIContent> originalWindowFocus =
|
|
mOriginalFocusedWindow ? mOriginalFocusedWindow->GetFocusedElement()
|
|
: nullptr;
|
|
// Blink does not check that focus is the same after blur, but WebKit does.
|
|
// Opt to follow Blink's behavior (see bug 687787).
|
|
if (mEventMessage == eFocusOut ||
|
|
originalWindowFocus == mOriginalFocusedContent) {
|
|
InternalFocusEvent event(true, mEventMessage);
|
|
event.mFlags.mBubbles = true;
|
|
event.mFlags.mCancelable = false;
|
|
event.mRelatedTarget = mRelatedTarget;
|
|
return EventDispatcher::Dispatch(mTarget, mContext, &event);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> mTarget;
|
|
RefPtr<nsPresContext> mContext;
|
|
EventMessage mEventMessage;
|
|
nsCOMPtr<nsPIDOMWindowOuter> mOriginalFocusedWindow;
|
|
nsCOMPtr<nsIContent> mOriginalFocusedContent;
|
|
nsCOMPtr<EventTarget> mRelatedTarget;
|
|
};
|
|
|
|
static Document* GetDocumentHelper(EventTarget* aTarget) {
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aTarget);
|
|
if (!node) {
|
|
nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aTarget);
|
|
return win ? win->GetExtantDoc() : nullptr;
|
|
}
|
|
|
|
return node->OwnerDoc();
|
|
}
|
|
|
|
void nsFocusManager::FireFocusInOrOutEvent(
|
|
EventMessage aEventMessage, PresShell* aPresShell, nsISupports* aTarget,
|
|
nsPIDOMWindowOuter* aCurrentFocusedWindow,
|
|
nsIContent* aCurrentFocusedContent, EventTarget* aRelatedTarget) {
|
|
NS_ASSERTION(aEventMessage == eFocusIn || aEventMessage == eFocusOut,
|
|
"Wrong event type for FireFocusInOrOutEvent");
|
|
|
|
nsContentUtils::AddScriptRunner(new FocusInOutEvent(
|
|
aTarget, aEventMessage, aPresShell->GetPresContext(),
|
|
aCurrentFocusedWindow, aCurrentFocusedContent, aRelatedTarget));
|
|
}
|
|
|
|
void nsFocusManager::SendFocusOrBlurEvent(
|
|
EventMessage aEventMessage, PresShell* aPresShell, Document* aDocument,
|
|
nsISupports* aTarget, uint32_t aFocusMethod, bool aWindowRaised,
|
|
bool aIsRefocus, EventTarget* aRelatedTarget) {
|
|
NS_ASSERTION(aEventMessage == eFocus || aEventMessage == eBlur,
|
|
"Wrong event type for SendFocusOrBlurEvent");
|
|
|
|
nsCOMPtr<EventTarget> eventTarget = do_QueryInterface(aTarget);
|
|
nsCOMPtr<Document> eventTargetDoc = GetDocumentHelper(eventTarget);
|
|
nsCOMPtr<Document> relatedTargetDoc = GetDocumentHelper(aRelatedTarget);
|
|
|
|
// set aRelatedTarget to null if it's not in the same document as eventTarget
|
|
if (eventTargetDoc != relatedTargetDoc) {
|
|
aRelatedTarget = nullptr;
|
|
}
|
|
|
|
if (aDocument && aDocument->EventHandlingSuppressed()) {
|
|
for (uint32_t i = mDelayedBlurFocusEvents.Length(); i > 0; --i) {
|
|
// if this event was already queued, remove it and append it to the end
|
|
if (mDelayedBlurFocusEvents[i - 1].mEventMessage == aEventMessage &&
|
|
mDelayedBlurFocusEvents[i - 1].mPresShell == aPresShell &&
|
|
mDelayedBlurFocusEvents[i - 1].mDocument == aDocument &&
|
|
mDelayedBlurFocusEvents[i - 1].mTarget == eventTarget &&
|
|
mDelayedBlurFocusEvents[i - 1].mRelatedTarget == aRelatedTarget) {
|
|
mDelayedBlurFocusEvents.RemoveElementAt(i - 1);
|
|
}
|
|
}
|
|
|
|
mDelayedBlurFocusEvents.AppendElement(nsDelayedBlurOrFocusEvent(
|
|
aEventMessage, aPresShell, aDocument, eventTarget, aRelatedTarget));
|
|
return;
|
|
}
|
|
|
|
// If mDelayedBlurFocusEvents queue is not empty, check if there are events
|
|
// that belongs to this doc, if yes, fire them first.
|
|
if (aDocument && !aDocument->EventHandlingSuppressed() &&
|
|
mDelayedBlurFocusEvents.Length()) {
|
|
FireDelayedEvents(aDocument);
|
|
}
|
|
|
|
FireFocusOrBlurEvent(aEventMessage, aPresShell, aTarget, aWindowRaised,
|
|
aIsRefocus, aRelatedTarget);
|
|
}
|
|
|
|
void nsFocusManager::FireFocusOrBlurEvent(EventMessage aEventMessage,
|
|
PresShell* aPresShell,
|
|
nsISupports* aTarget,
|
|
bool aWindowRaised, bool aIsRefocus,
|
|
EventTarget* aRelatedTarget) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> currentWindow = mFocusedWindow;
|
|
nsCOMPtr<nsPIDOMWindowInner> targetWindow = do_QueryInterface(aTarget);
|
|
nsCOMPtr<Document> targetDocument = do_QueryInterface(aTarget);
|
|
nsCOMPtr<nsIContent> currentFocusedContent =
|
|
currentWindow ? currentWindow->GetFocusedElement() : nullptr;
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsAccessibilityService* accService = GetAccService();
|
|
if (accService) {
|
|
if (aEventMessage == eFocus) {
|
|
accService->NotifyOfDOMFocus(aTarget);
|
|
} else {
|
|
accService->NotifyOfDOMBlur(aTarget);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsContentUtils::AddScriptRunner(
|
|
new FocusBlurEvent(aTarget, aEventMessage, aPresShell->GetPresContext(),
|
|
aWindowRaised, aIsRefocus, aRelatedTarget));
|
|
|
|
// Check that the target is not a window or document before firing
|
|
// focusin/focusout. Other browsers do not fire focusin/focusout on window,
|
|
// despite being required in the spec, so follow their behavior.
|
|
//
|
|
// As for document, we should not even fire focus/blur, but until then, we
|
|
// need this check. targetDocument should be removed once bug 1228802 is
|
|
// resolved.
|
|
if (!targetWindow && !targetDocument) {
|
|
EventMessage focusInOrOutMessage =
|
|
aEventMessage == eFocus ? eFocusIn : eFocusOut;
|
|
FireFocusInOrOutEvent(focusInOrOutMessage, aPresShell, aTarget,
|
|
currentWindow, currentFocusedContent, aRelatedTarget);
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::ScrollIntoView(PresShell* aPresShell, nsIContent* aContent,
|
|
uint32_t aFlags) {
|
|
if (aFlags & FLAG_NOSCROLL) {
|
|
return;
|
|
}
|
|
// If the noscroll flag isn't set, scroll the newly focused element into view.
|
|
aPresShell->ScrollContentIntoView(
|
|
aContent, ScrollAxis(kScrollMinimum, WhenToScroll::IfNotVisible),
|
|
ScrollAxis(kScrollMinimum, WhenToScroll::IfNotVisible),
|
|
ScrollFlags::ScrollOverflowHidden);
|
|
}
|
|
|
|
void nsFocusManager::RaiseWindow(nsPIDOMWindowOuter* aWindow,
|
|
CallerType aCallerType) {
|
|
// don't raise windows that are already raised or are in the process of
|
|
// being lowered
|
|
|
|
if (!aWindow || aWindow == mWindowBeingLowered) {
|
|
return;
|
|
}
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
if (aWindow == mActiveWindow) {
|
|
return;
|
|
}
|
|
} else {
|
|
// We can only test for top-level Web content. We can't return
|
|
// early for out-of-process iframes, because when they need to
|
|
// to be "raised", their top-level Web content may already be
|
|
// "raised".
|
|
if (aWindow->GetBrowsingContext() == GetActiveBrowsingContext()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (sTestMode) {
|
|
// In test mode, emulate raising the window. WindowRaised takes
|
|
// care of lowering the present active window. This happens in
|
|
// a separate runnable to avoid touching multiple windows in
|
|
// the current runnable.
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window(aWindow);
|
|
RefPtr<nsFocusManager> self(this);
|
|
NS_DispatchToCurrentThread(NS_NewRunnableFunction(
|
|
"nsFocusManager::RaiseWindow",
|
|
[self, window]() -> void { self->WindowRaised(window); }));
|
|
return;
|
|
}
|
|
|
|
#if defined(XP_WIN)
|
|
// Windows would rather we focus the child widget, otherwise, the toplevel
|
|
// widget will always end up being focused. Fortunately, focusing the child
|
|
// widget will also have the effect of raising the window this widget is in.
|
|
// But on other platforms, we can just focus the toplevel widget to raise
|
|
// the window.
|
|
nsCOMPtr<nsPIDOMWindowOuter> childWindow;
|
|
GetFocusedDescendant(aWindow, eIncludeAllDescendants,
|
|
getter_AddRefs(childWindow));
|
|
if (!childWindow) childWindow = aWindow;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (!docShell) return;
|
|
|
|
PresShell* presShell = docShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
if (nsViewManager* vm = presShell->GetViewManager()) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
vm->GetRootWidget(getter_AddRefs(widget));
|
|
if (widget) widget->SetFocus(nsIWidget::Raise::Yes, aCallerType);
|
|
}
|
|
#else
|
|
nsCOMPtr<nsIBaseWindow> treeOwnerAsWin =
|
|
do_QueryInterface(aWindow->GetDocShell());
|
|
if (treeOwnerAsWin) {
|
|
nsCOMPtr<nsIWidget> widget;
|
|
treeOwnerAsWin->GetMainWidget(getter_AddRefs(widget));
|
|
if (widget) widget->SetFocus(nsIWidget::Raise::Yes, aCallerType);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void nsFocusManager::UpdateCaretForCaretBrowsingMode() {
|
|
UpdateCaret(false, true, mFocusedElement);
|
|
}
|
|
|
|
void nsFocusManager::UpdateCaret(bool aMoveCaretToFocus, bool aUpdateVisibility,
|
|
nsIContent* aContent) {
|
|
LOGFOCUS(("Update Caret: %d %d", aMoveCaretToFocus, aUpdateVisibility));
|
|
|
|
if (!mFocusedWindow) return;
|
|
|
|
// this is called when a document is focused or when the caretbrowsing
|
|
// preference is changed
|
|
nsCOMPtr<nsIDocShell> focusedDocShell = mFocusedWindow->GetDocShell();
|
|
if (!focusedDocShell) {
|
|
return;
|
|
}
|
|
|
|
if (focusedDocShell->ItemType() == nsIDocShellTreeItem::typeChrome) {
|
|
return; // Never browse with caret in chrome
|
|
}
|
|
|
|
bool browseWithCaret = Preferences::GetBool("accessibility.browsewithcaret");
|
|
|
|
RefPtr<PresShell> presShell = focusedDocShell->GetPresShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
// If this is an editable document which isn't contentEditable, or a
|
|
// contentEditable document and the node to focus is contentEditable,
|
|
// return, so that we don't mess with caret visibility.
|
|
bool isEditable = false;
|
|
focusedDocShell->GetEditable(&isEditable);
|
|
|
|
if (isEditable) {
|
|
Document* doc = presShell->GetDocument();
|
|
|
|
bool isContentEditableDoc =
|
|
doc &&
|
|
doc->GetEditingState() == Document::EditingState::eContentEditable;
|
|
|
|
bool isFocusEditable = aContent && aContent->HasFlag(NODE_IS_EDITABLE);
|
|
if (!isContentEditableDoc || isFocusEditable) return;
|
|
}
|
|
|
|
if (!isEditable && aMoveCaretToFocus) {
|
|
MoveCaretToFocus(presShell, aContent);
|
|
}
|
|
|
|
if (!aUpdateVisibility) return;
|
|
|
|
// XXXndeakin this doesn't seem right. It should be checking for this only
|
|
// on the nearest ancestor frame which is a chrome frame. But this is
|
|
// what the existing code does, so just leave it for now.
|
|
if (!browseWithCaret) {
|
|
nsCOMPtr<Element> docElement = mFocusedWindow->GetFrameElementInternal();
|
|
if (docElement)
|
|
browseWithCaret =
|
|
docElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::showcaret,
|
|
NS_LITERAL_STRING("true"), eCaseMatters);
|
|
}
|
|
|
|
SetCaretVisible(presShell, browseWithCaret, aContent);
|
|
}
|
|
|
|
void nsFocusManager::MoveCaretToFocus(PresShell* aPresShell,
|
|
nsIContent* aContent) {
|
|
nsCOMPtr<Document> doc = aPresShell->GetDocument();
|
|
if (doc) {
|
|
RefPtr<nsFrameSelection> frameSelection = aPresShell->FrameSelection();
|
|
RefPtr<Selection> domSelection =
|
|
frameSelection->GetSelection(SelectionType::eNormal);
|
|
if (domSelection) {
|
|
// First clear the selection. This way, if there is no currently focused
|
|
// content, the selection will just be cleared.
|
|
domSelection->RemoveAllRanges(IgnoreErrors());
|
|
if (aContent) {
|
|
ErrorResult rv;
|
|
RefPtr<nsRange> newRange = doc->CreateRange(rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
rv.SuppressException();
|
|
return;
|
|
}
|
|
|
|
// Set the range to the start of the currently focused node
|
|
// Make sure it's collapsed
|
|
newRange->SelectNodeContents(*aContent, IgnoreErrors());
|
|
|
|
if (!aContent->GetFirstChild() ||
|
|
aContent->IsNodeOfType(nsINode::eHTML_FORM_CONTROL)) {
|
|
// If current focus node is a leaf, set range to before the
|
|
// node by using the parent as a container.
|
|
// This prevents it from appearing as selected.
|
|
newRange->SetStartBefore(*aContent, IgnoreErrors());
|
|
newRange->SetEndBefore(*aContent, IgnoreErrors());
|
|
}
|
|
domSelection->AddRangeAndSelectFramesAndNotifyListeners(*newRange,
|
|
IgnoreErrors());
|
|
domSelection->CollapseToStart(IgnoreErrors());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsFocusManager::SetCaretVisible(PresShell* aPresShell, bool aVisible,
|
|
nsIContent* aContent) {
|
|
// When browsing with caret, make sure caret is visible after new focus
|
|
// Return early if there is no caret. This can happen for the testcase
|
|
// for bug 308025 where a window is closed in a blur handler.
|
|
RefPtr<nsCaret> caret = aPresShell->GetCaret();
|
|
if (!caret) return NS_OK;
|
|
|
|
bool caretVisible = caret->IsVisible();
|
|
if (!aVisible && !caretVisible) return NS_OK;
|
|
|
|
RefPtr<nsFrameSelection> frameSelection;
|
|
if (aContent) {
|
|
NS_ASSERTION(aContent->GetComposedDoc() == aPresShell->GetDocument(),
|
|
"Wrong document?");
|
|
nsIFrame* focusFrame = aContent->GetPrimaryFrame();
|
|
if (focusFrame) frameSelection = focusFrame->GetFrameSelection();
|
|
}
|
|
|
|
RefPtr<nsFrameSelection> docFrameSelection = aPresShell->FrameSelection();
|
|
|
|
if (docFrameSelection && caret &&
|
|
(frameSelection == docFrameSelection || !aContent)) {
|
|
Selection* domSelection =
|
|
docFrameSelection->GetSelection(SelectionType::eNormal);
|
|
if (domSelection) {
|
|
// First, hide the caret to prevent attempting to show it in
|
|
// SetCaretDOMSelection
|
|
aPresShell->SetCaretEnabled(false);
|
|
|
|
// Caret must blink on non-editable elements
|
|
caret->SetIgnoreUserModify(true);
|
|
// Tell the caret which selection to use
|
|
caret->SetSelection(domSelection);
|
|
|
|
// In content, we need to set the caret. The only special case is edit
|
|
// fields, which have a different frame selection from the document.
|
|
// They will take care of making the caret visible themselves.
|
|
|
|
aPresShell->SetCaretReadOnly(false);
|
|
aPresShell->SetCaretEnabled(aVisible);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFocusManager::GetSelectionLocation(Document* aDocument,
|
|
PresShell* aPresShell,
|
|
nsIContent** aStartContent,
|
|
nsIContent** aEndContent) {
|
|
*aStartContent = *aEndContent = nullptr;
|
|
nsPresContext* presContext = aPresShell->GetPresContext();
|
|
NS_ASSERTION(presContext, "mPresContent is null!!");
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = aPresShell->FrameSelection();
|
|
|
|
RefPtr<Selection> domSelection;
|
|
if (frameSelection) {
|
|
domSelection = frameSelection->GetSelection(SelectionType::eNormal);
|
|
}
|
|
|
|
bool isCollapsed = false;
|
|
nsCOMPtr<nsIContent> startContent, endContent;
|
|
uint32_t startOffset = 0;
|
|
if (domSelection) {
|
|
isCollapsed = domSelection->IsCollapsed();
|
|
RefPtr<const nsRange> domRange = domSelection->GetRangeAt(0);
|
|
if (domRange) {
|
|
nsCOMPtr<nsINode> startNode = domRange->GetStartContainer();
|
|
nsCOMPtr<nsINode> endNode = domRange->GetEndContainer();
|
|
startOffset = domRange->StartOffset();
|
|
|
|
nsIContent* childContent = nullptr;
|
|
|
|
startContent = do_QueryInterface(startNode);
|
|
if (startContent && startContent->IsElement()) {
|
|
childContent = startContent->GetChildAt_Deprecated(startOffset);
|
|
if (childContent) {
|
|
startContent = childContent;
|
|
}
|
|
}
|
|
|
|
endContent = do_QueryInterface(endNode);
|
|
if (endContent && endContent->IsElement()) {
|
|
uint32_t endOffset = domRange->EndOffset();
|
|
childContent = endContent->GetChildAt_Deprecated(endOffset);
|
|
if (childContent) {
|
|
endContent = childContent;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
nsIFrame* startFrame = nullptr;
|
|
if (startContent) {
|
|
startFrame = startContent->GetPrimaryFrame();
|
|
if (isCollapsed) {
|
|
// Next check to see if our caret is at the very end of a node
|
|
// If so, the caret is actually sitting in front of the next
|
|
// logical frame's primary node - so for this case we need to
|
|
// change caretContent to that node.
|
|
|
|
if (startContent->NodeType() == nsINode::TEXT_NODE) {
|
|
nsAutoString nodeValue;
|
|
startContent->GetAsText()->AppendTextTo(nodeValue);
|
|
|
|
bool isFormControl =
|
|
startContent->IsNodeOfType(nsINode::eHTML_FORM_CONTROL);
|
|
|
|
if (nodeValue.Length() == startOffset && !isFormControl &&
|
|
startContent != aDocument->GetRootElement()) {
|
|
// Yes, indeed we were at the end of the last node
|
|
nsCOMPtr<nsIFrameEnumerator> frameTraversal;
|
|
nsresult rv = NS_NewFrameTraversal(getter_AddRefs(frameTraversal),
|
|
presContext, startFrame, eLeaf,
|
|
false, // aVisual
|
|
false, // aLockInScrollView
|
|
true, // aFollowOOFs
|
|
false // aSkipPopupChecks
|
|
);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsIFrame* newCaretFrame = nullptr;
|
|
nsCOMPtr<nsIContent> newCaretContent = startContent;
|
|
bool endOfSelectionInStartNode(startContent == endContent);
|
|
do {
|
|
// Continue getting the next frame until the primary content for the
|
|
// frame we are on changes - we don't want to be stuck in the same
|
|
// place
|
|
frameTraversal->Next();
|
|
newCaretFrame =
|
|
static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
if (nullptr == newCaretFrame) break;
|
|
newCaretContent = newCaretFrame->GetContent();
|
|
} while (!newCaretContent || newCaretContent == startContent);
|
|
|
|
if (newCaretFrame && newCaretContent) {
|
|
// If the caret is exactly at the same position of the new frame,
|
|
// then we can use the newCaretFrame and newCaretContent for our
|
|
// position
|
|
nsRect caretRect;
|
|
nsIFrame* frame = nsCaret::GetGeometry(domSelection, &caretRect);
|
|
if (frame) {
|
|
nsPoint caretWidgetOffset;
|
|
nsIWidget* widget = frame->GetNearestWidget(caretWidgetOffset);
|
|
caretRect.MoveBy(caretWidgetOffset);
|
|
nsPoint newCaretOffset;
|
|
nsIWidget* newCaretWidget =
|
|
newCaretFrame->GetNearestWidget(newCaretOffset);
|
|
if (widget == newCaretWidget && caretRect.y == newCaretOffset.y &&
|
|
caretRect.x == newCaretOffset.x) {
|
|
// The caret is at the start of the new element.
|
|
startFrame = newCaretFrame;
|
|
startContent = newCaretContent;
|
|
if (endOfSelectionInStartNode) {
|
|
endContent = newCaretContent; // Ensure end of selection is
|
|
// not before start
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
*aStartContent = startContent;
|
|
*aEndContent = endContent;
|
|
NS_IF_ADDREF(*aStartContent);
|
|
NS_IF_ADDREF(*aEndContent);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsFocusManager::DetermineElementToMoveFocus(
|
|
nsPIDOMWindowOuter* aWindow, nsIContent* aStartContent, int32_t aType,
|
|
bool aNoParentTraversal, bool aNavigateByKey, nsIContent** aNextContent) {
|
|
*aNextContent = nullptr;
|
|
|
|
// This is used for document navigation only. It will be set to true if we
|
|
// start navigating from a starting point. If this starting point is near the
|
|
// end of the document (for example, an element on a statusbar), and there
|
|
// are no child documents or panels before the end of the document, then we
|
|
// will need to ensure that we don't consider the root chrome window when we
|
|
// loop around and instead find the next child document/panel, as focus is
|
|
// already in that window. This flag will be cleared once we navigate into
|
|
// another document.
|
|
bool mayFocusRoot = (aStartContent != nullptr);
|
|
|
|
nsCOMPtr<nsIContent> startContent = aStartContent;
|
|
if (!startContent && aType != MOVEFOCUS_CARET) {
|
|
if (aType == MOVEFOCUS_FORWARDDOC || aType == MOVEFOCUS_BACKWARDDOC) {
|
|
// When moving between documents, make sure to get the right
|
|
// starting content in a descendant.
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
startContent = GetFocusedDescendant(aWindow, eIncludeAllDescendants,
|
|
getter_AddRefs(focusedWindow));
|
|
} else if (aType != MOVEFOCUS_LASTDOC) {
|
|
// Otherwise, start at the focused node. If MOVEFOCUS_LASTDOC is used,
|
|
// then we are document-navigating backwards from chrome to the content
|
|
// process, and we don't want to use this so that we start from the end
|
|
// of the document.
|
|
startContent = aWindow->GetFocusedElement();
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<Document> doc;
|
|
if (startContent)
|
|
doc = startContent->GetComposedDoc();
|
|
else
|
|
doc = aWindow->GetExtantDoc();
|
|
if (!doc) return NS_OK;
|
|
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_TabFocusModel,
|
|
&nsIContent::sTabFocusModel);
|
|
|
|
// True if we are navigating by document (F6/Shift+F6) or false if we are
|
|
// navigating by element (Tab/Shift+Tab).
|
|
const bool forDocumentNavigation =
|
|
aType == MOVEFOCUS_FORWARDDOC || aType == MOVEFOCUS_BACKWARDDOC ||
|
|
aType == MOVEFOCUS_FIRSTDOC || aType == MOVEFOCUS_LASTDOC;
|
|
|
|
// If moving to the root or first document, find the root element and return.
|
|
if (aType == MOVEFOCUS_ROOT || aType == MOVEFOCUS_FIRSTDOC) {
|
|
NS_IF_ADDREF(*aNextContent = GetRootForFocus(aWindow, doc, false, false));
|
|
if (!*aNextContent && aType == MOVEFOCUS_FIRSTDOC) {
|
|
// When looking for the first document, if the root wasn't focusable,
|
|
// find the next focusable document.
|
|
aType = MOVEFOCUS_FORWARDDOC;
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
Element* rootContent = doc->GetRootElement();
|
|
NS_ENSURE_TRUE(rootContent, NS_OK);
|
|
|
|
PresShell* presShell = doc->GetPresShell();
|
|
NS_ENSURE_TRUE(presShell, NS_OK);
|
|
|
|
if (aType == MOVEFOCUS_FIRST) {
|
|
if (!aStartContent) {
|
|
startContent = rootContent;
|
|
}
|
|
return GetNextTabbableContent(presShell, startContent, nullptr,
|
|
startContent, true, 1, false, false,
|
|
aNavigateByKey, aNextContent);
|
|
}
|
|
if (aType == MOVEFOCUS_LAST) {
|
|
if (!aStartContent) {
|
|
startContent = rootContent;
|
|
}
|
|
return GetNextTabbableContent(presShell, startContent, nullptr,
|
|
startContent, false, 0, false, false,
|
|
aNavigateByKey, aNextContent);
|
|
}
|
|
|
|
bool forward = (aType == MOVEFOCUS_FORWARD || aType == MOVEFOCUS_FORWARDDOC ||
|
|
aType == MOVEFOCUS_CARET);
|
|
bool doNavigation = true;
|
|
bool ignoreTabIndex = false;
|
|
// when a popup is open, we want to ensure that tab navigation occurs only
|
|
// within the most recently opened panel. If a popup is open, its frame will
|
|
// be stored in popupFrame.
|
|
nsIFrame* popupFrame = nullptr;
|
|
|
|
int32_t tabIndex = forward ? 1 : 0;
|
|
if (startContent) {
|
|
nsIFrame* frame = startContent->GetPrimaryFrame();
|
|
if (startContent->IsHTMLElement(nsGkAtoms::area))
|
|
startContent->IsFocusable(&tabIndex);
|
|
else if (frame)
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
else
|
|
startContent->IsFocusable(&tabIndex);
|
|
|
|
// if the current element isn't tabbable, ignore the tabindex and just
|
|
// look for the next element. The root content won't have a tabindex
|
|
// so just treat this as the beginning of the tab order.
|
|
if (tabIndex < 0) {
|
|
tabIndex = 1;
|
|
if (startContent != rootContent) ignoreTabIndex = true;
|
|
}
|
|
|
|
// check if the focus is currently inside a popup. Elements such as the
|
|
// autocomplete widget use the noautofocus attribute to allow the focus to
|
|
// remain outside the popup when it is opened.
|
|
if (frame) {
|
|
popupFrame = nsLayoutUtils::GetClosestFrameOfType(
|
|
frame, LayoutFrameType::MenuPopup);
|
|
}
|
|
|
|
if (popupFrame && !forDocumentNavigation) {
|
|
// Don't navigate outside of a popup, so pretend that the
|
|
// root content is the popup itself
|
|
rootContent = popupFrame->GetContent()->AsElement();
|
|
NS_ASSERTION(rootContent, "Popup frame doesn't have a content node");
|
|
} else if (!forward) {
|
|
// If focus moves backward and when current focused node is root
|
|
// content or <body> element which is editable by contenteditable
|
|
// attribute, focus should move to its parent document.
|
|
if (startContent == rootContent) {
|
|
doNavigation = false;
|
|
} else {
|
|
Document* doc = startContent->GetComposedDoc();
|
|
if (startContent ==
|
|
nsLayoutUtils::GetEditableRootContentByContentEditable(doc)) {
|
|
doNavigation = false;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
#ifdef MOZ_XUL
|
|
if (aType != MOVEFOCUS_CARET) {
|
|
// if there is no focus, yet a panel is open, focus the first item in
|
|
// the panel
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) popupFrame = pm->GetTopPopup(ePopupTypePanel);
|
|
}
|
|
#endif
|
|
if (popupFrame) {
|
|
// When there is a popup open, and no starting content, start the search
|
|
// at the topmost popup.
|
|
startContent = popupFrame->GetContent();
|
|
NS_ASSERTION(startContent, "Popup frame doesn't have a content node");
|
|
// Unless we are searching for documents, set the root content to the
|
|
// popup as well, so that we don't tab-navigate outside the popup.
|
|
// When navigating by documents, we start at the popup but can navigate
|
|
// outside of it to look for other panels and documents.
|
|
if (!forDocumentNavigation) {
|
|
rootContent = startContent->AsElement();
|
|
}
|
|
|
|
doc = startContent ? startContent->GetComposedDoc() : nullptr;
|
|
} else {
|
|
// Otherwise, for content shells, start from the location of the caret.
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (docShell && docShell->ItemType() != nsIDocShellTreeItem::typeChrome) {
|
|
nsCOMPtr<nsIContent> endSelectionContent;
|
|
GetSelectionLocation(doc, presShell, getter_AddRefs(startContent),
|
|
getter_AddRefs(endSelectionContent));
|
|
// If the selection is on the rootContent, then there is no selection
|
|
if (startContent == rootContent) {
|
|
startContent = nullptr;
|
|
}
|
|
|
|
if (aType == MOVEFOCUS_CARET) {
|
|
// GetFocusInSelection finds a focusable link near the caret.
|
|
// If there is no start content though, don't do this to avoid
|
|
// focusing something unexpected.
|
|
if (startContent) {
|
|
GetFocusInSelection(aWindow, startContent, endSelectionContent,
|
|
aNextContent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (startContent) {
|
|
// when starting from a selection, we always want to find the next or
|
|
// previous element in the document. So the tabindex on elements
|
|
// should be ignored.
|
|
ignoreTabIndex = true;
|
|
}
|
|
}
|
|
|
|
if (!startContent) {
|
|
// otherwise, just use the root content as the starting point
|
|
startContent = rootContent;
|
|
NS_ENSURE_TRUE(startContent, NS_OK);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check if the starting content is the same as the content assigned to the
|
|
// retargetdocumentfocus attribute. Is so, we don't want to start searching
|
|
// from there but instead from the beginning of the document. Otherwise, the
|
|
// content that appears before the retargetdocumentfocus element will never
|
|
// get checked as it will be skipped when the focus is retargetted to it.
|
|
if (forDocumentNavigation && nsContentUtils::IsChromeDoc(doc)) {
|
|
nsAutoString retarget;
|
|
|
|
if (rootContent->GetAttr(kNameSpaceID_None,
|
|
nsGkAtoms::retargetdocumentfocus, retarget)) {
|
|
nsIContent* retargetElement = doc->GetElementById(retarget);
|
|
// The common case here is the urlbar where focus is on the anonymous
|
|
// input inside the textbox, but the retargetdocumentfocus attribute
|
|
// refers to the textbox. The Contains check will return false and the
|
|
// IsInclusiveDescendantOf check will return true in this case.
|
|
if (retargetElement &&
|
|
(retargetElement == startContent ||
|
|
(!retargetElement->Contains(startContent) &&
|
|
startContent->IsInclusiveDescendantOf(retargetElement)))) {
|
|
startContent = rootContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(startContent, "starting content not set");
|
|
|
|
// keep a reference to the starting content. If we find that again, it means
|
|
// we've iterated around completely and we don't want to adjust the focus.
|
|
// The skipOriginalContentCheck will be set to true only for the first time
|
|
// GetNextTabbableContent is called. This ensures that we don't break out
|
|
// when nothing is focused to start with. Specifically,
|
|
// GetNextTabbableContent first checks the root content -- which happens to
|
|
// be the same as the start content -- when nothing is focused and tabbing
|
|
// forward. Without skipOriginalContentCheck set to true, we'd end up
|
|
// returning right away and focusing nothing. Luckily, GetNextTabbableContent
|
|
// will never wrap around on its own, and can only return the original
|
|
// content when it is called a second time or later.
|
|
bool skipOriginalContentCheck = true;
|
|
nsIContent* originalStartContent = startContent;
|
|
|
|
LOGCONTENTNAVIGATION("Focus Navigation Start Content %s", startContent.get());
|
|
LOGFOCUSNAVIGATION((" Forward: %d Tabindex: %d Ignore: %d DocNav: %d",
|
|
forward, tabIndex, ignoreTabIndex,
|
|
forDocumentNavigation));
|
|
|
|
while (doc) {
|
|
if (doNavigation) {
|
|
nsCOMPtr<nsIContent> nextFocus;
|
|
nsresult rv = GetNextTabbableContent(
|
|
presShell, rootContent,
|
|
skipOriginalContentCheck ? nullptr : originalStartContent,
|
|
startContent, forward, tabIndex, ignoreTabIndex,
|
|
forDocumentNavigation, aNavigateByKey, getter_AddRefs(nextFocus));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (rv == NS_SUCCESS_DOM_NO_OPERATION) {
|
|
// Navigation was redirected to a child process, so just return.
|
|
return NS_OK;
|
|
}
|
|
|
|
// found a content node to focus.
|
|
if (nextFocus) {
|
|
LOGCONTENTNAVIGATION("Next Content: %s", nextFocus.get());
|
|
|
|
// as long as the found node was not the same as the starting node,
|
|
// set it as the return value. For document navigation, we can return
|
|
// the same element in case there is only one content node that could
|
|
// be returned, for example, in a child process document.
|
|
if (nextFocus != originalStartContent || forDocumentNavigation) {
|
|
nextFocus.forget(aNextContent);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (popupFrame && !forDocumentNavigation) {
|
|
// in a popup, so start again from the beginning of the popup. However,
|
|
// if we already started at the beginning, then there isn't anything to
|
|
// focus, so just return
|
|
if (startContent != rootContent) {
|
|
startContent = rootContent;
|
|
tabIndex = forward ? 1 : 0;
|
|
continue;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
doNavigation = true;
|
|
skipOriginalContentCheck = forDocumentNavigation;
|
|
ignoreTabIndex = false;
|
|
|
|
if (aNoParentTraversal) {
|
|
if (startContent == rootContent) return NS_OK;
|
|
|
|
startContent = rootContent;
|
|
tabIndex = forward ? 1 : 0;
|
|
continue;
|
|
}
|
|
|
|
// Reached the beginning or end of the document. Next, navigate up to the
|
|
// parent document and try again.
|
|
nsCOMPtr<nsPIDOMWindowOuter> piWindow = doc->GetWindow();
|
|
NS_ENSURE_TRUE(piWindow, NS_ERROR_FAILURE);
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = piWindow->GetDocShell();
|
|
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
|
|
|
|
// Get the frame element this window is inside and, from that, get the
|
|
// parent document and presshell. If there is no enclosing frame element,
|
|
// then this is a top-level, embedded or remote window.
|
|
startContent = piWindow->GetFrameElementInternal();
|
|
if (startContent) {
|
|
doc = startContent->GetComposedDoc();
|
|
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
|
|
|
|
rootContent = doc->GetRootElement();
|
|
presShell = doc->GetPresShell();
|
|
|
|
// We can focus the root element now that we have moved to another
|
|
// document.
|
|
mayFocusRoot = true;
|
|
|
|
nsIFrame* frame = startContent->GetPrimaryFrame();
|
|
if (!frame) {
|
|
return NS_OK;
|
|
}
|
|
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
if (tabIndex < 0) {
|
|
tabIndex = 1;
|
|
ignoreTabIndex = true;
|
|
}
|
|
|
|
// if the frame is inside a popup, make sure to scan only within the
|
|
// popup. This handles the situation of tabbing amongst elements
|
|
// inside an iframe which is itself inside a popup. Otherwise,
|
|
// navigation would move outside the popup when tabbing outside the
|
|
// iframe.
|
|
if (!forDocumentNavigation) {
|
|
popupFrame = nsLayoutUtils::GetClosestFrameOfType(
|
|
frame, LayoutFrameType::MenuPopup);
|
|
if (popupFrame) {
|
|
rootContent = popupFrame->GetContent()->AsElement();
|
|
NS_ASSERTION(rootContent, "Popup frame doesn't have a content node");
|
|
}
|
|
}
|
|
} else {
|
|
if (aNavigateByKey) {
|
|
// There is no parent, so call the tree owner. This will tell the
|
|
// embedder or parent process that it should take the focus.
|
|
bool tookFocus;
|
|
docShell->TabToTreeOwner(forward, forDocumentNavigation, &tookFocus);
|
|
// If the tree owner took the focus, blur the current element.
|
|
if (tookFocus) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = docShell->GetWindow();
|
|
if (window->GetFocusedElement() == mFocusedElement)
|
|
Blur(GetFocusedBrowsingContext(), nullptr, true, true);
|
|
else
|
|
window->SetFocusedElement(nullptr);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// If we have reached the end of the top-level document, focus the
|
|
// first element in the top-level document. This should always happen
|
|
// when navigating by document forwards but when navigating backwards,
|
|
// only do this if we started in another document or within a popup frame.
|
|
// If the focus started in this window outside a popup however, we should
|
|
// continue by looping around to the end again.
|
|
if (forDocumentNavigation && (forward || mayFocusRoot || popupFrame)) {
|
|
// HTML content documents can have their root element focused (a focus
|
|
// ring appears around the entire content area frame). This root
|
|
// appears in the tab order before all of the elements in the document.
|
|
// Chrome documents however cannot be focused directly, so instead we
|
|
// focus the first focusable element within the window.
|
|
// For example, the urlbar.
|
|
Element* root = GetRootForFocus(piWindow, doc, true, true);
|
|
return FocusFirst(root, aNextContent);
|
|
}
|
|
|
|
// Once we have hit the top-level and have iterated to the end again, we
|
|
// just want to break out next time we hit this spot to prevent infinite
|
|
// iteration.
|
|
mayFocusRoot = true;
|
|
|
|
// reset the tab index and start again from the beginning or end
|
|
startContent = rootContent;
|
|
tabIndex = forward ? 1 : 0;
|
|
}
|
|
|
|
// wrapped all the way around and didn't find anything to move the focus
|
|
// to, so just break out
|
|
if (startContent == originalStartContent) break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
uint32_t nsFocusManager::FocusOptionsToFocusManagerFlags(
|
|
const mozilla::dom::FocusOptions& aOptions) {
|
|
return aOptions.mPreventScroll ? nsIFocusManager::FLAG_NOSCROLL : 0;
|
|
}
|
|
|
|
static bool IsHostOrSlot(const nsIContent* aContent) {
|
|
return aContent && (aContent->GetShadowRoot() ||
|
|
aContent->IsHTMLElement(nsGkAtoms::slot));
|
|
}
|
|
|
|
// Helper class to iterate contents in scope by traversing flattened tree
|
|
// in tree order
|
|
class MOZ_STACK_CLASS ScopedContentTraversal {
|
|
public:
|
|
ScopedContentTraversal(nsIContent* aStartContent, nsIContent* aOwner)
|
|
: mCurrent(aStartContent), mOwner(aOwner) {
|
|
MOZ_ASSERT(aStartContent);
|
|
}
|
|
|
|
void Next();
|
|
void Prev();
|
|
|
|
void Reset() { SetCurrent(mOwner); }
|
|
|
|
nsIContent* GetCurrent() const { return mCurrent; }
|
|
|
|
private:
|
|
void SetCurrent(nsIContent* aContent) { mCurrent = aContent; }
|
|
|
|
nsIContent* mCurrent;
|
|
nsIContent* mOwner;
|
|
};
|
|
|
|
void ScopedContentTraversal::Next() {
|
|
MOZ_ASSERT(mCurrent);
|
|
|
|
// Get mCurrent's first child if it's in the same scope.
|
|
if (!IsHostOrSlot(mCurrent) || mCurrent == mOwner) {
|
|
StyleChildrenIterator iter(mCurrent);
|
|
nsIContent* child = iter.GetNextChild();
|
|
if (child) {
|
|
SetCurrent(child);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If mOwner has no children, END traversal
|
|
if (mCurrent == mOwner) {
|
|
SetCurrent(nullptr);
|
|
return;
|
|
}
|
|
|
|
nsIContent* current = mCurrent;
|
|
while (1) {
|
|
// Create parent's iterator and move to current
|
|
nsIContent* parent = current->GetFlattenedTreeParent();
|
|
StyleChildrenIterator parentIter(parent);
|
|
parentIter.Seek(current);
|
|
|
|
// Get next sibling of current
|
|
if (nsIContent* next = parentIter.GetNextChild()) {
|
|
SetCurrent(next);
|
|
return;
|
|
}
|
|
|
|
// If no next sibling and parent is mOwner, END traversal
|
|
if (parent == mOwner) {
|
|
SetCurrent(nullptr);
|
|
return;
|
|
}
|
|
|
|
current = parent;
|
|
}
|
|
}
|
|
|
|
void ScopedContentTraversal::Prev() {
|
|
MOZ_ASSERT(mCurrent);
|
|
|
|
nsIContent* parent;
|
|
nsIContent* last;
|
|
if (mCurrent == mOwner) {
|
|
// Get last child of mOwner
|
|
StyleChildrenIterator ownerIter(mOwner, false /* aStartAtBeginning */);
|
|
last = ownerIter.GetPreviousChild();
|
|
|
|
parent = last;
|
|
} else {
|
|
// Create parent's iterator and move to mCurrent
|
|
parent = mCurrent->GetFlattenedTreeParent();
|
|
StyleChildrenIterator parentIter(parent);
|
|
parentIter.Seek(mCurrent);
|
|
|
|
// Get previous sibling
|
|
last = parentIter.GetPreviousChild();
|
|
}
|
|
|
|
while (last) {
|
|
parent = last;
|
|
if (IsHostOrSlot(parent)) {
|
|
// Skip contents in other scopes
|
|
break;
|
|
}
|
|
|
|
// Find last child
|
|
StyleChildrenIterator iter(parent, false /* aStartAtBeginning */);
|
|
last = iter.GetPreviousChild();
|
|
}
|
|
|
|
// If parent is mOwner and no previous sibling remains, END traversal
|
|
SetCurrent(parent == mOwner ? nullptr : parent);
|
|
}
|
|
|
|
/**
|
|
* Returns scope owner of aContent.
|
|
* A scope owner is either a shadow host, or slot.
|
|
*/
|
|
static nsIContent* FindScopeOwner(nsIContent* aContent) {
|
|
nsIContent* currentContent = aContent;
|
|
while (currentContent) {
|
|
nsIContent* parent = currentContent->GetFlattenedTreeParent();
|
|
|
|
// Shadow host / Slot
|
|
if (IsHostOrSlot(parent)) {
|
|
return parent;
|
|
}
|
|
|
|
currentContent = parent;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Host and Slot elements need to be handled as if they had tabindex 0 even
|
|
* when they don't have the attribute. This is a helper method to get the
|
|
* right value for focus navigation. If aIsFocusable is passed, it is set to
|
|
* true if the element itself is focusable.
|
|
*/
|
|
static int32_t HostOrSlotTabIndexValue(const nsIContent* aContent,
|
|
bool* aIsFocusable = nullptr) {
|
|
MOZ_ASSERT(IsHostOrSlot(aContent));
|
|
|
|
if (aIsFocusable) {
|
|
*aIsFocusable = false;
|
|
nsIFrame* frame = aContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
int32_t tabIndex;
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
*aIsFocusable = tabIndex >= 0;
|
|
}
|
|
}
|
|
|
|
const nsAttrValue* attrVal =
|
|
aContent->AsElement()->GetParsedAttr(nsGkAtoms::tabindex);
|
|
if (!attrVal) {
|
|
return 0;
|
|
}
|
|
|
|
if (attrVal->Type() == nsAttrValue::eInteger) {
|
|
return attrVal->GetIntegerValue();
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
nsIContent* nsFocusManager::GetNextTabbableContentInScope(
|
|
nsIContent* aOwner, nsIContent* aStartContent,
|
|
nsIContent* aOriginalStartContent, bool aForward, int32_t aCurrentTabIndex,
|
|
bool aIgnoreTabIndex, bool aForDocumentNavigation, bool aNavigateByKey,
|
|
bool aSkipOwner) {
|
|
MOZ_ASSERT(IsHostOrSlot(aOwner), "Scope owner should be host or slot");
|
|
|
|
if (!aSkipOwner && (aForward && aOwner == aStartContent)) {
|
|
int32_t tabIndex = -1;
|
|
nsIFrame* frame = aOwner->GetPrimaryFrame();
|
|
if (frame && frame->IsFocusable(&tabIndex, false) && tabIndex >= 0) {
|
|
return aOwner;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Iterate contents in scope
|
|
//
|
|
ScopedContentTraversal contentTraversal(aStartContent, aOwner);
|
|
nsCOMPtr<nsIContent> iterContent;
|
|
nsIContent* firstNonChromeOnly =
|
|
aStartContent->IsInNativeAnonymousSubtree()
|
|
? aStartContent->FindFirstNonChromeOnlyAccessContent()
|
|
: nullptr;
|
|
while (1) {
|
|
// Iterate tab index to find corresponding contents in scope
|
|
|
|
while (1) {
|
|
// Iterate remaining contents in scope to find next content to focus
|
|
|
|
// Get next content
|
|
aForward ? contentTraversal.Next() : contentTraversal.Prev();
|
|
iterContent = contentTraversal.GetCurrent();
|
|
|
|
if (firstNonChromeOnly && firstNonChromeOnly == iterContent) {
|
|
// We just broke out from the native anonymous content, so move
|
|
// to the previous/next node of the native anonymous owner.
|
|
if (aForward) {
|
|
contentTraversal.Next();
|
|
} else {
|
|
contentTraversal.Prev();
|
|
}
|
|
iterContent = contentTraversal.GetCurrent();
|
|
}
|
|
if (!iterContent) {
|
|
// Reach the end
|
|
break;
|
|
}
|
|
|
|
int32_t tabIndex = 0;
|
|
if (iterContent->IsInNativeAnonymousSubtree() &&
|
|
iterContent->GetPrimaryFrame()) {
|
|
iterContent->GetPrimaryFrame()->IsFocusable(&tabIndex);
|
|
} else if (IsHostOrSlot(iterContent)) {
|
|
tabIndex = HostOrSlotTabIndexValue(iterContent);
|
|
} else {
|
|
nsIFrame* frame = iterContent->GetPrimaryFrame();
|
|
if (!frame) {
|
|
continue;
|
|
}
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
}
|
|
if (tabIndex < 0 || !(aIgnoreTabIndex || tabIndex == aCurrentTabIndex)) {
|
|
continue;
|
|
}
|
|
|
|
if (!IsHostOrSlot(iterContent)) {
|
|
nsCOMPtr<nsIContent> elementInFrame;
|
|
bool checkSubDocument = true;
|
|
if (aForDocumentNavigation &&
|
|
TryDocumentNavigation(iterContent, &checkSubDocument,
|
|
getter_AddRefs(elementInFrame))) {
|
|
return elementInFrame;
|
|
}
|
|
if (!checkSubDocument) {
|
|
continue;
|
|
}
|
|
|
|
if (TryToMoveFocusToSubDocument(iterContent, aOriginalStartContent,
|
|
aForward, aForDocumentNavigation,
|
|
aNavigateByKey,
|
|
getter_AddRefs(elementInFrame))) {
|
|
return elementInFrame;
|
|
}
|
|
|
|
// Found content to focus
|
|
return iterContent;
|
|
}
|
|
|
|
// Search in scope owned by iterContent
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
iterContent, iterContent, aOriginalStartContent, aForward,
|
|
aForward ? 1 : 0, aIgnoreTabIndex, aForDocumentNavigation,
|
|
aNavigateByKey, false /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
return contentToFocus;
|
|
}
|
|
};
|
|
|
|
// If already at lowest priority tab (0), end search completely.
|
|
// A bit counterintuitive but true, tabindex order goes 1, 2, ... 32767, 0
|
|
if (aCurrentTabIndex == (aForward ? 0 : 1)) {
|
|
break;
|
|
}
|
|
|
|
// We've been just trying to find some focusable element, and haven't, so
|
|
// bail out.
|
|
if (aIgnoreTabIndex) {
|
|
break;
|
|
}
|
|
|
|
// Continue looking for next highest priority tabindex
|
|
aCurrentTabIndex = GetNextTabIndex(aOwner, aCurrentTabIndex, aForward);
|
|
contentTraversal.Reset();
|
|
}
|
|
|
|
// Return scope owner at last for backward navigation if its tabindex
|
|
// is non-negative
|
|
if (!aSkipOwner && !aForward) {
|
|
int32_t tabIndex = -1;
|
|
nsIFrame* frame = aOwner->GetPrimaryFrame();
|
|
if (frame && frame->IsFocusable(&tabIndex, false) && tabIndex >= 0) {
|
|
return aOwner;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent* nsFocusManager::GetNextTabbableContentInAncestorScopes(
|
|
nsIContent* aStartOwner, nsIContent** aStartContent,
|
|
nsIContent* aOriginalStartContent, bool aForward, int32_t* aCurrentTabIndex,
|
|
bool aIgnoreTabIndex, bool aForDocumentNavigation, bool aNavigateByKey) {
|
|
MOZ_ASSERT(aStartOwner == FindScopeOwner(*aStartContent),
|
|
"aStartOWner should be the scope owner of aStartContent");
|
|
MOZ_ASSERT(IsHostOrSlot(aStartOwner), "scope owner should be host or slot");
|
|
|
|
nsIContent* owner = aStartOwner;
|
|
nsIContent* startContent = *aStartContent;
|
|
while (IsHostOrSlot(owner)) {
|
|
int32_t tabIndex = 0;
|
|
if (IsHostOrSlot(startContent)) {
|
|
tabIndex = HostOrSlotTabIndexValue(startContent);
|
|
} else if (nsIFrame* frame = startContent->GetPrimaryFrame()) {
|
|
frame->IsFocusable(&tabIndex);
|
|
} else {
|
|
startContent->IsFocusable(&tabIndex);
|
|
}
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
owner, startContent, aOriginalStartContent, aForward, tabIndex,
|
|
aIgnoreTabIndex, aForDocumentNavigation, aNavigateByKey,
|
|
false /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
return contentToFocus;
|
|
}
|
|
|
|
startContent = owner;
|
|
owner = FindScopeOwner(startContent);
|
|
}
|
|
|
|
// If not found in shadow DOM, search from the top level shadow host in light
|
|
// DOM
|
|
*aStartContent = startContent;
|
|
*aCurrentTabIndex = HostOrSlotTabIndexValue(startContent);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static nsIContent* GetTopLevelScopeOwner(nsIContent* aContent) {
|
|
nsIContent* topLevelScopeOwner = nullptr;
|
|
while (aContent) {
|
|
if (HTMLSlotElement* slot = aContent->GetAssignedSlot()) {
|
|
aContent = slot;
|
|
topLevelScopeOwner = aContent;
|
|
} else if (ShadowRoot* shadowRoot = aContent->GetContainingShadow()) {
|
|
aContent = shadowRoot->Host();
|
|
topLevelScopeOwner = aContent;
|
|
} else {
|
|
aContent = aContent->GetParent();
|
|
if (aContent && HTMLSlotElement::FromNode(aContent)) {
|
|
topLevelScopeOwner = aContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
return topLevelScopeOwner;
|
|
}
|
|
|
|
nsresult nsFocusManager::GetNextTabbableContent(
|
|
PresShell* aPresShell, nsIContent* aRootContent,
|
|
nsIContent* aOriginalStartContent, nsIContent* aStartContent, bool aForward,
|
|
int32_t aCurrentTabIndex, bool aIgnoreTabIndex, bool aForDocumentNavigation,
|
|
bool aNavigateByKey, nsIContent** aResultContent) {
|
|
*aResultContent = nullptr;
|
|
|
|
if (!aStartContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent* startContent = aStartContent;
|
|
nsIContent* currentTopLevelScopeOwner = GetTopLevelScopeOwner(startContent);
|
|
|
|
LOGCONTENTNAVIGATION("GetNextTabbable: %s", startContent);
|
|
LOGFOCUSNAVIGATION((" tabindex: %d", aCurrentTabIndex));
|
|
|
|
// If startContent is a shadow host or slot in forward navigation,
|
|
// search in scope owned by startContent
|
|
if (aForward && IsHostOrSlot(startContent)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
startContent, startContent, aOriginalStartContent, aForward,
|
|
aForward ? 1 : 0, aIgnoreTabIndex, aForDocumentNavigation,
|
|
aNavigateByKey, true /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// If startContent is in a scope owned by Shadow DOM search from scope
|
|
// including startContent
|
|
if (nsIContent* owner = FindScopeOwner(startContent)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInAncestorScopes(
|
|
owner, &startContent, aOriginalStartContent, aForward,
|
|
&aCurrentTabIndex, aIgnoreTabIndex, aForDocumentNavigation,
|
|
aNavigateByKey);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// If we reach here, it means no next tabbable content in shadow DOM.
|
|
// We need to continue searching in light DOM, starting at the top level
|
|
// shadow host in light DOM (updated startContent) and its tabindex
|
|
// (updated aCurrentTabIndex).
|
|
MOZ_ASSERT(!FindScopeOwner(startContent),
|
|
"startContent should not be owned by Shadow DOM at this point");
|
|
|
|
nsPresContext* presContext = aPresShell->GetPresContext();
|
|
|
|
bool getNextFrame = true;
|
|
nsCOMPtr<nsIContent> iterStartContent = startContent;
|
|
nsIContent* topLevelScopeStartContent = startContent;
|
|
// Iterate tab index to find corresponding contents
|
|
while (1) {
|
|
nsIFrame* frame = iterStartContent->GetPrimaryFrame();
|
|
// if there is no frame, look for another content node that has a frame
|
|
while (!frame) {
|
|
// if the root content doesn't have a frame, just return
|
|
if (iterStartContent == aRootContent) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// look for the next or previous content node in tree order
|
|
iterStartContent = aForward ? iterStartContent->GetNextNode()
|
|
: iterStartContent->GetPreviousContent();
|
|
if (!iterStartContent) {
|
|
break;
|
|
}
|
|
|
|
frame = iterStartContent->GetPrimaryFrame();
|
|
// Host without frame, enter its scope.
|
|
if (!frame && iterStartContent->GetShadowRoot()) {
|
|
int32_t tabIndex = HostOrSlotTabIndexValue(iterStartContent);
|
|
if (tabIndex >= 0 &&
|
|
(aIgnoreTabIndex || aCurrentTabIndex == tabIndex)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
iterStartContent, iterStartContent, aOriginalStartContent,
|
|
aForward, aForward ? 1 : 0, aIgnoreTabIndex,
|
|
aForDocumentNavigation, aNavigateByKey, true /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
// we've already skipped over the initial focused content, so we
|
|
// don't want to traverse frames.
|
|
getNextFrame = false;
|
|
}
|
|
|
|
nsCOMPtr<nsIFrameEnumerator> frameTraversal;
|
|
if (frame) {
|
|
// For tab navigation, pass false for aSkipPopupChecks so that we don't
|
|
// iterate into or out of a popup. For document naviation pass true to
|
|
// ignore these boundaries.
|
|
nsresult rv = NS_NewFrameTraversal(
|
|
getter_AddRefs(frameTraversal), presContext, frame, ePreOrder,
|
|
false, // aVisual
|
|
false, // aLockInScrollView
|
|
true, // aFollowOOFs
|
|
aForDocumentNavigation // aSkipPopupChecks
|
|
);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (iterStartContent == aRootContent) {
|
|
if (!aForward) {
|
|
frameTraversal->Last();
|
|
} else if (aRootContent->IsFocusable()) {
|
|
frameTraversal->Next();
|
|
}
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
} else if (getNextFrame &&
|
|
(!iterStartContent ||
|
|
!iterStartContent->IsHTMLElement(nsGkAtoms::area))) {
|
|
// Need to do special check in case we're in an imagemap which has
|
|
// multiple content nodes per frame, so don't skip over the starting
|
|
// frame.
|
|
if (aForward) {
|
|
frameTraversal->Next();
|
|
} else {
|
|
frameTraversal->Prev();
|
|
}
|
|
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
}
|
|
}
|
|
|
|
nsIContent* oldTopLevelScopeOwner = nullptr;
|
|
// Walk frames to find something tabbable matching aCurrentTabIndex
|
|
while (frame) {
|
|
// Try to find the topmost scope owner, since we want to skip the node
|
|
// that is not owned by document in frame traversal.
|
|
nsIContent* currentContent = frame->GetContent();
|
|
if (currentTopLevelScopeOwner) {
|
|
oldTopLevelScopeOwner = currentTopLevelScopeOwner;
|
|
}
|
|
currentTopLevelScopeOwner = GetTopLevelScopeOwner(currentContent);
|
|
if (currentTopLevelScopeOwner &&
|
|
currentTopLevelScopeOwner == oldTopLevelScopeOwner) {
|
|
// We're within non-document scope, continue.
|
|
do {
|
|
if (aForward) {
|
|
frameTraversal->Next();
|
|
} else {
|
|
frameTraversal->Prev();
|
|
}
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
// For the usage of GetPrevContinuation, see the comment
|
|
// at the end of while (frame) loop.
|
|
} while (frame && frame->GetPrevContinuation());
|
|
continue;
|
|
}
|
|
|
|
// For document navigation, check if this element is an open panel. Since
|
|
// panels aren't focusable (tabIndex would be -1), we'll just assume that
|
|
// for document navigation, the tabIndex is 0.
|
|
if (aForDocumentNavigation && currentContent && (aCurrentTabIndex == 0) &&
|
|
currentContent->IsXULElement(nsGkAtoms::panel)) {
|
|
nsMenuPopupFrame* popupFrame = do_QueryFrame(frame);
|
|
// Check if the panel is open. Closed panels are ignored since you can't
|
|
// focus anything in them.
|
|
if (popupFrame && popupFrame->IsOpen()) {
|
|
// When moving backward, skip the popup we started in otherwise it
|
|
// will be selected again.
|
|
bool validPopup = true;
|
|
if (!aForward) {
|
|
nsIContent* content = topLevelScopeStartContent;
|
|
while (content) {
|
|
if (content == currentContent) {
|
|
validPopup = false;
|
|
break;
|
|
}
|
|
|
|
content = content->GetParent();
|
|
}
|
|
}
|
|
|
|
if (validPopup) {
|
|
// Since a panel isn't focusable itself, find the first focusable
|
|
// content within the popup. If there isn't any focusable content
|
|
// in the popup, skip this popup and continue iterating through the
|
|
// frames. We pass the panel itself (currentContent) as the starting
|
|
// and root content, so that we only find content within the panel.
|
|
// Note also that we pass false for aForDocumentNavigation since we
|
|
// want to locate the first content, not the first document.
|
|
nsresult rv = GetNextTabbableContent(
|
|
aPresShell, currentContent, nullptr, currentContent, true, 1,
|
|
false, false, aNavigateByKey, aResultContent);
|
|
if (NS_SUCCEEDED(rv) && *aResultContent) {
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// As of now, 2018/04/12, sequential focus navigation is still
|
|
// in the obsolete Shadow DOM specification.
|
|
// http://w3c.github.io/webcomponents/spec/shadow/#sequential-focus-navigation
|
|
// "if ELEMENT is focusable, a shadow host, or a slot element,
|
|
// append ELEMENT to NAVIGATION-ORDER."
|
|
// and later in "For each element ELEMENT in NAVIGATION-ORDER: "
|
|
// hosts and slots are handled before other elements.
|
|
if (currentTopLevelScopeOwner) {
|
|
bool focusableHostSlot;
|
|
int32_t tabIndex = HostOrSlotTabIndexValue(currentTopLevelScopeOwner,
|
|
&focusableHostSlot);
|
|
// Host or slot itself isn't focusable or going backwards, enter its
|
|
// scope.
|
|
if ((!aForward || !focusableHostSlot) && tabIndex >= 0 &&
|
|
(aIgnoreTabIndex || aCurrentTabIndex == tabIndex)) {
|
|
nsIContent* contentToFocus = GetNextTabbableContentInScope(
|
|
currentTopLevelScopeOwner, currentTopLevelScopeOwner,
|
|
aOriginalStartContent, aForward, aForward ? 1 : 0,
|
|
aIgnoreTabIndex, aForDocumentNavigation, aNavigateByKey,
|
|
true /* aSkipOwner */);
|
|
if (contentToFocus) {
|
|
NS_ADDREF(*aResultContent = contentToFocus);
|
|
return NS_OK;
|
|
}
|
|
// If we've wrapped around already, then carry on.
|
|
if (aOriginalStartContent &&
|
|
currentTopLevelScopeOwner ==
|
|
GetTopLevelScopeOwner(aOriginalStartContent)) {
|
|
// FIXME: Shouldn't this return null instead? aOriginalStartContent
|
|
// isn't focusable after all.
|
|
NS_ADDREF(*aResultContent = aOriginalStartContent);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
// There is no next tabbable content in currentTopLevelScopeOwner's
|
|
// scope. We should continue the loop in order to skip all contents that
|
|
// is in currentTopLevelScopeOwner's scope.
|
|
continue;
|
|
}
|
|
|
|
MOZ_ASSERT(!GetTopLevelScopeOwner(currentContent),
|
|
"currentContent should be in top-level-scope at this point");
|
|
|
|
// TabIndex not set defaults to 0 for form elements, anchors and other
|
|
// elements that are normally focusable. Tabindex defaults to -1
|
|
// for elements that are not normally focusable.
|
|
// The returned computed tabindex from IsFocusable() is as follows:
|
|
// clang-format off
|
|
// < 0 not tabbable at all
|
|
// == 0 in normal tab order (last after positive tabindexed items)
|
|
// > 0 can be tabbed to in the order specified by this value
|
|
// clang-format on
|
|
int32_t tabIndex;
|
|
frame->IsFocusable(&tabIndex, 0);
|
|
|
|
LOGCONTENTNAVIGATION("Next Tabbable %s:", frame->GetContent());
|
|
LOGFOCUSNAVIGATION(
|
|
(" with tabindex: %d expected: %d", tabIndex, aCurrentTabIndex));
|
|
|
|
if (tabIndex >= 0) {
|
|
NS_ASSERTION(currentContent,
|
|
"IsFocusable set a tabindex for a frame with no content");
|
|
if (!aForDocumentNavigation &&
|
|
currentContent->IsHTMLElement(nsGkAtoms::img) &&
|
|
currentContent->AsElement()->HasAttr(kNameSpaceID_None,
|
|
nsGkAtoms::usemap)) {
|
|
// This is an image with a map. Image map areas are not traversed by
|
|
// nsIFrameTraversal so look for the next or previous area element.
|
|
nsIContent* areaContent = GetNextTabbableMapArea(
|
|
aForward, aCurrentTabIndex, currentContent->AsElement(),
|
|
iterStartContent);
|
|
if (areaContent) {
|
|
NS_ADDREF(*aResultContent = areaContent);
|
|
return NS_OK;
|
|
}
|
|
} else if (aIgnoreTabIndex || aCurrentTabIndex == tabIndex) {
|
|
// break out if we've wrapped around to the start again.
|
|
if (aOriginalStartContent &&
|
|
currentContent == aOriginalStartContent) {
|
|
NS_ADDREF(*aResultContent = currentContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
// If this is a remote child browser, call NavigateDocument to have
|
|
// the child process continue the navigation. Return a special error
|
|
// code to have the caller return early. If the child ends up not
|
|
// being focusable in some way, the child process will call back
|
|
// into document navigation again by calling MoveFocus.
|
|
if (BrowserParent* remote = BrowserParent::GetFrom(currentContent)) {
|
|
if (aNavigateByKey) {
|
|
remote->NavigateByKey(aForward, aForDocumentNavigation);
|
|
return NS_SUCCESS_DOM_NO_OPERATION;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Same as above but for out-of-process iframes
|
|
if (auto* bbc = BrowserBridgeChild::GetFrom(currentContent)) {
|
|
if (aNavigateByKey) {
|
|
bbc->NavigateByKey(aForward, aForDocumentNavigation);
|
|
return NS_SUCCESS_DOM_NO_OPERATION;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// Next, for document navigation, check if this a non-remote child
|
|
// document.
|
|
bool checkSubDocument = true;
|
|
if (aForDocumentNavigation &&
|
|
TryDocumentNavigation(currentContent, &checkSubDocument,
|
|
aResultContent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (checkSubDocument) {
|
|
// found a node with a matching tab index. Check if it is a child
|
|
// frame. If so, navigate into the child frame instead.
|
|
if (TryToMoveFocusToSubDocument(
|
|
currentContent, aOriginalStartContent, aForward,
|
|
aForDocumentNavigation, aNavigateByKey, aResultContent)) {
|
|
MOZ_ASSERT(*aResultContent);
|
|
return NS_OK;
|
|
}
|
|
// otherwise, use this as the next content node to tab to, unless
|
|
// this was the element we started on. This would happen for
|
|
// instance on an element with child frames, where frame navigation
|
|
// could return the original element again. In that case, just skip
|
|
// it. Also, if the next content node is the root content, then
|
|
// return it. This latter case would happen only if someone made a
|
|
// popup focusable.
|
|
// Also, when going backwards, check to ensure that the focus
|
|
// wouldn't be redirected. Otherwise, for example, when an input in
|
|
// a textbox is focused, the enclosing textbox would be found and
|
|
// the same inner input would be returned again.
|
|
else if (currentContent == aRootContent ||
|
|
(currentContent != startContent &&
|
|
(aForward || !GetRedirectedFocus(currentContent)))) {
|
|
NS_ADDREF(*aResultContent = currentContent);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
} else if (aOriginalStartContent &&
|
|
currentContent == aOriginalStartContent) {
|
|
// not focusable, so return if we have wrapped around to the original
|
|
// content. This is necessary in case the original starting content was
|
|
// not focusable.
|
|
//
|
|
// FIXME: Shouldn't this return null instead? currentContent isn't
|
|
// focusable after all.
|
|
NS_ADDREF(*aResultContent = currentContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
// Move to the next or previous frame, but ignore continuation frames
|
|
// since only the first frame should be involved in focusability.
|
|
// Otherwise, a loop will occur in the following example:
|
|
// <span tabindex="1">...<a/><a/>...</span>
|
|
// where the text wraps onto multiple lines. Tabbing from the second
|
|
// link can find one of the span's continuation frames between the link
|
|
// and the end of the span, and the span would end up getting focused
|
|
// again.
|
|
do {
|
|
if (aForward)
|
|
frameTraversal->Next();
|
|
else
|
|
frameTraversal->Prev();
|
|
frame = static_cast<nsIFrame*>(frameTraversal->CurrentItem());
|
|
} while (frame && frame->GetPrevContinuation());
|
|
}
|
|
|
|
// If already at lowest priority tab (0), end search completely.
|
|
// A bit counterintuitive but true, tabindex order goes 1, 2, ... 32767, 0
|
|
if (aCurrentTabIndex == (aForward ? 0 : 1)) {
|
|
// if going backwards, the canvas should be focused once the beginning
|
|
// has been reached, so get the root element.
|
|
if (!aForward) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = GetCurrentWindow(aRootContent);
|
|
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
|
|
|
|
RefPtr<Element> docRoot = GetRootForFocus(
|
|
window, aRootContent->GetComposedDoc(), false, true);
|
|
FocusFirst(docRoot, aResultContent);
|
|
}
|
|
break;
|
|
}
|
|
|
|
// continue looking for next highest priority tabindex
|
|
aCurrentTabIndex =
|
|
GetNextTabIndex(aRootContent, aCurrentTabIndex, aForward);
|
|
startContent = iterStartContent = aRootContent;
|
|
currentTopLevelScopeOwner = GetTopLevelScopeOwner(startContent);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool nsFocusManager::TryDocumentNavigation(nsIContent* aCurrentContent,
|
|
bool* aCheckSubDocument,
|
|
nsIContent** aResultContent) {
|
|
*aCheckSubDocument = true;
|
|
if (Element* docRoot = GetRootForChildDocument(aCurrentContent)) {
|
|
// If GetRootForChildDocument returned something then call
|
|
// FocusFirst to find the root or first element to focus within
|
|
// the child document. If this is a frameset though, skip this and
|
|
// fall through to normal tab navigation to iterate into
|
|
// the frameset's frames and locate the first focusable frame.
|
|
if (!docRoot->IsHTMLElement(nsGkAtoms::frameset)) {
|
|
*aCheckSubDocument = false;
|
|
Unused << FocusFirst(docRoot, aResultContent);
|
|
return *aResultContent != nullptr;
|
|
}
|
|
} else {
|
|
// Set aCheckSubDocument to false, as this was neither a frame
|
|
// type element or a child document that was focusable.
|
|
*aCheckSubDocument = false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsFocusManager::TryToMoveFocusToSubDocument(
|
|
nsIContent* aCurrentContent, nsIContent* aOriginalStartContent,
|
|
bool aForward, bool aForDocumentNavigation, bool aNavigateByKey,
|
|
nsIContent** aResultContent) {
|
|
Document* doc = aCurrentContent->GetComposedDoc();
|
|
NS_ASSERTION(doc, "content not in document");
|
|
Document* subdoc = doc->GetSubDocumentFor(aCurrentContent);
|
|
if (subdoc && !subdoc->EventHandlingSuppressed()) {
|
|
if (aForward) {
|
|
// When tabbing forward into a frame, return the root
|
|
// frame so that the canvas becomes focused.
|
|
if (nsCOMPtr<nsPIDOMWindowOuter> subframe = subdoc->GetWindow()) {
|
|
*aResultContent = GetRootForFocus(subframe, subdoc, false, true);
|
|
if (*aResultContent) {
|
|
NS_ADDREF(*aResultContent);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
Element* rootElement = subdoc->GetRootElement();
|
|
PresShell* subPresShell = subdoc->GetPresShell();
|
|
if (rootElement && subPresShell) {
|
|
nsresult rv = GetNextTabbableContent(
|
|
subPresShell, rootElement, aOriginalStartContent, rootElement,
|
|
aForward, (aForward ? 1 : 0), false, aForDocumentNavigation,
|
|
aNavigateByKey, aResultContent);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
if (*aResultContent) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsIContent* nsFocusManager::GetNextTabbableMapArea(bool aForward,
|
|
int32_t aCurrentTabIndex,
|
|
Element* aImageContent,
|
|
nsIContent* aStartContent) {
|
|
if (aImageContent->IsInComposedDoc()) {
|
|
HTMLImageElement* imgElement = HTMLImageElement::FromNode(aImageContent);
|
|
// The caller should check the element type, so we can assert here.
|
|
MOZ_ASSERT(imgElement);
|
|
|
|
nsCOMPtr<nsIContent> mapContent = imgElement->FindImageMap();
|
|
if (!mapContent) return nullptr;
|
|
uint32_t count = mapContent->GetChildCount();
|
|
// First see if the the start content is in this map
|
|
|
|
int32_t index = mapContent->ComputeIndexOf(aStartContent);
|
|
int32_t tabIndex;
|
|
if (index < 0 || (aStartContent->IsFocusable(&tabIndex) &&
|
|
tabIndex != aCurrentTabIndex)) {
|
|
// If aStartContent is in this map we must start iterating past it.
|
|
// We skip the case where aStartContent has tabindex == aStartContent
|
|
// since the next tab ordered element might be before it
|
|
// (or after for backwards) in the child list.
|
|
index = aForward ? -1 : (int32_t)count;
|
|
}
|
|
|
|
// GetChildAt_Deprecated will return nullptr if our index < 0 or index >=
|
|
// count
|
|
nsCOMPtr<nsIContent> areaContent;
|
|
while ((areaContent = mapContent->GetChildAt_Deprecated(
|
|
aForward ? ++index : --index)) != nullptr) {
|
|
if (areaContent->IsFocusable(&tabIndex) && tabIndex == aCurrentTabIndex) {
|
|
return areaContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
int32_t nsFocusManager::GetNextTabIndex(nsIContent* aParent,
|
|
int32_t aCurrentTabIndex,
|
|
bool aForward) {
|
|
int32_t tabIndex, childTabIndex;
|
|
StyleChildrenIterator iter(aParent);
|
|
|
|
if (aForward) {
|
|
tabIndex = 0;
|
|
for (nsIContent* child = iter.GetNextChild(); child;
|
|
child = iter.GetNextChild()) {
|
|
// Skip child's descendants if child is a shadow host or slot, as they are
|
|
// in the focus navigation scope owned by child's shadow root
|
|
if (!IsHostOrSlot(child)) {
|
|
childTabIndex = GetNextTabIndex(child, aCurrentTabIndex, aForward);
|
|
if (childTabIndex > aCurrentTabIndex && childTabIndex != tabIndex) {
|
|
tabIndex = (tabIndex == 0 || childTabIndex < tabIndex) ? childTabIndex
|
|
: tabIndex;
|
|
}
|
|
}
|
|
|
|
nsAutoString tabIndexStr;
|
|
if (child->IsElement()) {
|
|
child->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::tabindex,
|
|
tabIndexStr);
|
|
}
|
|
nsresult ec;
|
|
int32_t val = tabIndexStr.ToInteger(&ec);
|
|
if (NS_SUCCEEDED(ec) && val > aCurrentTabIndex && val != tabIndex) {
|
|
tabIndex = (tabIndex == 0 || val < tabIndex) ? val : tabIndex;
|
|
}
|
|
}
|
|
} else { /* !aForward */
|
|
tabIndex = 1;
|
|
for (nsIContent* child = iter.GetNextChild(); child;
|
|
child = iter.GetNextChild()) {
|
|
// Skip child's descendants if child is a shadow host or slot, as they are
|
|
// in the focus navigation scope owned by child's shadow root
|
|
if (!IsHostOrSlot(child)) {
|
|
childTabIndex = GetNextTabIndex(child, aCurrentTabIndex, aForward);
|
|
if ((aCurrentTabIndex == 0 && childTabIndex > tabIndex) ||
|
|
(childTabIndex < aCurrentTabIndex && childTabIndex > tabIndex)) {
|
|
tabIndex = childTabIndex;
|
|
}
|
|
}
|
|
|
|
nsAutoString tabIndexStr;
|
|
if (child->IsElement()) {
|
|
child->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::tabindex,
|
|
tabIndexStr);
|
|
}
|
|
nsresult ec;
|
|
int32_t val = tabIndexStr.ToInteger(&ec);
|
|
if (NS_SUCCEEDED(ec)) {
|
|
if ((aCurrentTabIndex == 0 && val > tabIndex) ||
|
|
(val < aCurrentTabIndex && val > tabIndex)) {
|
|
tabIndex = val;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return tabIndex;
|
|
}
|
|
|
|
nsresult nsFocusManager::FocusFirst(Element* aRootElement,
|
|
nsIContent** aNextContent) {
|
|
if (!aRootElement) {
|
|
return NS_OK;
|
|
}
|
|
|
|
Document* doc = aRootElement->GetComposedDoc();
|
|
if (doc) {
|
|
if (nsContentUtils::IsChromeDoc(doc)) {
|
|
// If the redirectdocumentfocus attribute is set, redirect the focus to a
|
|
// specific element. This is primarily used to retarget the focus to the
|
|
// urlbar during document navigation.
|
|
nsAutoString retarget;
|
|
|
|
if (aRootElement->GetAttr(kNameSpaceID_None,
|
|
nsGkAtoms::retargetdocumentfocus, retarget)) {
|
|
nsCOMPtr<Element> element = doc->GetElementById(retarget);
|
|
nsCOMPtr<nsIContent> retargetElement =
|
|
FlushAndCheckIfFocusable(element, 0);
|
|
if (retargetElement) {
|
|
retargetElement.forget(aNextContent);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = doc->GetDocShell();
|
|
if (docShell->ItemType() == nsIDocShellTreeItem::typeChrome) {
|
|
// If the found content is in a chrome shell, navigate forward one
|
|
// tabbable item so that the first item is focused. Note that we
|
|
// always go forward and not back here.
|
|
PresShell* presShell = doc->GetPresShell();
|
|
if (presShell) {
|
|
return GetNextTabbableContent(presShell, aRootElement, nullptr,
|
|
aRootElement, true, 1, false, false, true,
|
|
aNextContent);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ADDREF(*aNextContent = aRootElement);
|
|
return NS_OK;
|
|
}
|
|
|
|
Element* nsFocusManager::GetRootForFocus(nsPIDOMWindowOuter* aWindow,
|
|
Document* aDocument,
|
|
bool aForDocumentNavigation,
|
|
bool aCheckVisibility) {
|
|
if (!aForDocumentNavigation) {
|
|
nsCOMPtr<nsIDocShell> docShell = aWindow->GetDocShell();
|
|
if (docShell->ItemType() == nsIDocShellTreeItem::typeChrome) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (aCheckVisibility && !IsWindowVisible(aWindow)) return nullptr;
|
|
|
|
// If the body is contenteditable, use the editor's root element rather than
|
|
// the actual root element.
|
|
RefPtr<Element> rootElement =
|
|
nsLayoutUtils::GetEditableRootContentByContentEditable(aDocument);
|
|
if (!rootElement || !rootElement->GetPrimaryFrame()) {
|
|
rootElement = aDocument->GetRootElement();
|
|
if (!rootElement) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (aCheckVisibility && !rootElement->GetPrimaryFrame()) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Finally, check if this is a frameset
|
|
if (aDocument && aDocument->IsHTMLOrXHTML()) {
|
|
Element* htmlChild = aDocument->GetHtmlChildElement(nsGkAtoms::frameset);
|
|
if (htmlChild) {
|
|
// In document navigation mode, return the frameset so that navigation
|
|
// descends into the child frames.
|
|
return aForDocumentNavigation ? htmlChild : nullptr;
|
|
}
|
|
}
|
|
|
|
return rootElement;
|
|
}
|
|
|
|
Element* nsFocusManager::GetRootForChildDocument(nsIContent* aContent) {
|
|
// Check for elements that represent child documents, that is, browsers,
|
|
// editors or frames from a frameset. We don't include iframes since we
|
|
// consider them to be an integral part of the same window or page.
|
|
if (!aContent || !(aContent->IsXULElement(nsGkAtoms::browser) ||
|
|
aContent->IsXULElement(nsGkAtoms::editor) ||
|
|
aContent->IsHTMLElement(nsGkAtoms::frame))) {
|
|
return nullptr;
|
|
}
|
|
|
|
Document* doc = aContent->GetComposedDoc();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
Document* subdoc = doc->GetSubDocumentFor(aContent);
|
|
if (!subdoc || subdoc->EventHandlingSuppressed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = subdoc->GetWindow();
|
|
return GetRootForFocus(window, subdoc, true, true);
|
|
}
|
|
|
|
void nsFocusManager::GetFocusInSelection(nsPIDOMWindowOuter* aWindow,
|
|
nsIContent* aStartSelection,
|
|
nsIContent* aEndSelection,
|
|
nsIContent** aFocusedContent) {
|
|
*aFocusedContent = nullptr;
|
|
|
|
nsCOMPtr<nsIContent> testContent = aStartSelection;
|
|
nsCOMPtr<nsIContent> nextTestContent = aEndSelection;
|
|
|
|
nsCOMPtr<nsIContent> currentFocus = aWindow->GetFocusedElement();
|
|
|
|
// We now have the correct start node in selectionContent!
|
|
// Search for focusable elements, starting with selectionContent
|
|
|
|
// Method #1: Keep going up while we look - an ancestor might be focusable
|
|
// We could end the loop earlier, such as when we're no longer
|
|
// in the same frame, by comparing selectionContent->GetPrimaryFrame()
|
|
// with a variable holding the starting selectionContent
|
|
while (testContent) {
|
|
// Keep testing while selectionContent is equal to something,
|
|
// eventually we'll run out of ancestors
|
|
|
|
nsCOMPtr<nsIURI> uri;
|
|
if (testContent == currentFocus ||
|
|
testContent->IsLink(getter_AddRefs(uri))) {
|
|
testContent.forget(aFocusedContent);
|
|
return;
|
|
}
|
|
|
|
// Get the parent
|
|
testContent = testContent->GetParent();
|
|
|
|
if (!testContent) {
|
|
// We run this loop again, checking the ancestor chain of the selection's
|
|
// end point
|
|
testContent = nextTestContent;
|
|
nextTestContent = nullptr;
|
|
}
|
|
}
|
|
|
|
// We couldn't find an anchor that was an ancestor of the selection start
|
|
// Method #2: look for anchor in selection's primary range (depth first
|
|
// search)
|
|
|
|
nsCOMPtr<nsIContent> selectionNode = aStartSelection;
|
|
nsCOMPtr<nsIContent> endSelectionNode = aEndSelection;
|
|
nsCOMPtr<nsIContent> testNode;
|
|
|
|
do {
|
|
testContent = selectionNode;
|
|
|
|
// We're looking for any focusable link that could be part of the
|
|
// main document's selection.
|
|
nsCOMPtr<nsIURI> uri;
|
|
if (testContent == currentFocus ||
|
|
testContent->IsLink(getter_AddRefs(uri))) {
|
|
testContent.forget(aFocusedContent);
|
|
return;
|
|
}
|
|
|
|
nsIContent* testNode = selectionNode->GetFirstChild();
|
|
if (testNode) {
|
|
selectionNode = testNode;
|
|
continue;
|
|
}
|
|
|
|
if (selectionNode == endSelectionNode) break;
|
|
testNode = selectionNode->GetNextSibling();
|
|
if (testNode) {
|
|
selectionNode = testNode;
|
|
continue;
|
|
}
|
|
|
|
do {
|
|
// GetParent is OK here, instead of GetParentNode, because the only case
|
|
// where the latter returns something different from the former is when
|
|
// GetParentNode is the document. But in that case we would simply get
|
|
// null for selectionNode when setting it to testNode->GetNextSibling()
|
|
// (because a document has no next sibling). And then the next iteration
|
|
// of this loop would get null for GetParentNode anyway, and break out of
|
|
// all the loops.
|
|
testNode = selectionNode->GetParent();
|
|
if (!testNode || testNode == endSelectionNode) {
|
|
selectionNode = nullptr;
|
|
break;
|
|
}
|
|
selectionNode = testNode->GetNextSibling();
|
|
if (selectionNode) break;
|
|
selectionNode = testNode;
|
|
} while (true);
|
|
} while (selectionNode && selectionNode != endSelectionNode);
|
|
}
|
|
|
|
class PointerUnlocker : public Runnable {
|
|
public:
|
|
PointerUnlocker() : mozilla::Runnable("PointerUnlocker") {
|
|
MOZ_ASSERT(!PointerUnlocker::sActiveUnlocker);
|
|
PointerUnlocker::sActiveUnlocker = this;
|
|
}
|
|
|
|
~PointerUnlocker() {
|
|
if (PointerUnlocker::sActiveUnlocker == this) {
|
|
PointerUnlocker::sActiveUnlocker = nullptr;
|
|
}
|
|
}
|
|
|
|
NS_IMETHOD Run() override {
|
|
if (PointerUnlocker::sActiveUnlocker == this) {
|
|
PointerUnlocker::sActiveUnlocker = nullptr;
|
|
}
|
|
NS_ENSURE_STATE(nsFocusManager::GetFocusManager());
|
|
nsPIDOMWindowOuter* focused =
|
|
nsFocusManager::GetFocusManager()->GetFocusedWindow();
|
|
nsCOMPtr<Document> pointerLockedDoc =
|
|
do_QueryReferent(EventStateManager::sPointerLockedDoc);
|
|
if (pointerLockedDoc && !nsContentUtils::IsInPointerLockContext(focused)) {
|
|
Document::UnlockPointer();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static PointerUnlocker* sActiveUnlocker;
|
|
};
|
|
|
|
PointerUnlocker* PointerUnlocker::sActiveUnlocker = nullptr;
|
|
|
|
void nsFocusManager::SetFocusedBrowsingContext(BrowsingContext* aContext) {
|
|
mFocusedBrowsingContextInContent = aContext;
|
|
if (aContext && !XRE_IsParentProcess()) {
|
|
MOZ_ASSERT(aContext->IsInProcess());
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
contentChild->SendSetFocusedBrowsingContext(aContext);
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::SetFocusedBrowsingContextFromOtherProcess(
|
|
BrowsingContext* aContext) {
|
|
MOZ_ASSERT(!XRE_IsParentProcess());
|
|
MOZ_ASSERT(aContext);
|
|
if (aContext->IsInProcess()) {
|
|
// This message has been in transit for long enough that
|
|
// the process association of aContext has changed since
|
|
// the other content process sent the message, because
|
|
// an iframe in that process became an out-of-process
|
|
// iframe while the IPC broadcast that we're receiving
|
|
// was in-flight. Let's just ignore this.
|
|
return;
|
|
}
|
|
mFocusedBrowsingContextInContent = aContext;
|
|
mFocusedElement = nullptr;
|
|
}
|
|
|
|
void nsFocusManager::SetFocusedBrowsingContextInChrome(
|
|
mozilla::dom::BrowsingContext* aContext) {
|
|
mFocusedBrowsingContextInChrome = aContext;
|
|
}
|
|
|
|
BrowsingContext* nsFocusManager::GetFocusedBrowsingContextInChrome() {
|
|
return mFocusedBrowsingContextInChrome;
|
|
}
|
|
|
|
void nsFocusManager::BrowsingContextDetached(BrowsingContext* aContext) {
|
|
if (mFocusedBrowsingContextInChrome == aContext) {
|
|
mFocusedBrowsingContextInChrome = nullptr;
|
|
}
|
|
if (mActiveBrowsingContextInChrome == aContext) {
|
|
mActiveBrowsingContextInChrome = nullptr;
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::SetActiveBrowsingContextInContent(
|
|
mozilla::dom::BrowsingContext* aContext) {
|
|
MOZ_ASSERT(!XRE_IsParentProcess());
|
|
MOZ_ASSERT(!aContext || aContext->IsInProcess());
|
|
mozilla::dom::ContentChild* contentChild =
|
|
mozilla::dom::ContentChild::GetSingleton();
|
|
MOZ_ASSERT(contentChild);
|
|
if (aContext != mActiveBrowsingContextInContent) {
|
|
if (aContext) {
|
|
contentChild->SendSetActiveBrowsingContext(aContext);
|
|
} else if (mActiveBrowsingContextInContent) {
|
|
// We want to sync this over only if this isn't happening
|
|
// due to the active BrowsingContext switching processes,
|
|
// in which case the BrowserChild has already marked itself
|
|
// as destroying.
|
|
nsPIDOMWindowOuter* outer =
|
|
mActiveBrowsingContextInContent->GetDOMWindow();
|
|
if (outer) {
|
|
nsPIDOMWindowInner* inner = outer->GetCurrentInnerWindow();
|
|
if (inner) {
|
|
WindowGlobalChild* globalChild = inner->GetWindowGlobalChild();
|
|
if (globalChild) {
|
|
RefPtr<BrowserChild> browserChild = globalChild->GetBrowserChild();
|
|
if (browserChild && !browserChild->IsDestroyed()) {
|
|
contentChild->SendUnsetActiveBrowsingContext(
|
|
mActiveBrowsingContextInContent);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
mActiveBrowsingContextInContentSetFromOtherProcess = false;
|
|
mActiveBrowsingContextInContent = aContext;
|
|
}
|
|
|
|
void nsFocusManager::SetActiveBrowsingContextFromOtherProcess(
|
|
BrowsingContext* aContext) {
|
|
MOZ_ASSERT(!XRE_IsParentProcess());
|
|
MOZ_ASSERT(aContext);
|
|
if (aContext->IsInProcess()) {
|
|
// This message has been in transit for long enough that
|
|
// the process association of aContext has changed since
|
|
// the other content process sent the message, because
|
|
// an iframe in that process became an out-of-process
|
|
// iframe while the IPC broadcast that we're receiving
|
|
// was in-flight. Let's just ignore this.
|
|
return;
|
|
}
|
|
mActiveBrowsingContextInContentSetFromOtherProcess = true;
|
|
mActiveBrowsingContextInContent = aContext;
|
|
}
|
|
|
|
void nsFocusManager::UnsetActiveBrowsingContextFromOtherProcess(
|
|
BrowsingContext* aContext) {
|
|
MOZ_ASSERT(!XRE_IsParentProcess());
|
|
MOZ_ASSERT(aContext);
|
|
if (mActiveBrowsingContextInContent == aContext) {
|
|
mActiveBrowsingContextInContent = nullptr;
|
|
}
|
|
}
|
|
|
|
void nsFocusManager::SetActiveBrowsingContextInChrome(
|
|
mozilla::dom::BrowsingContext* aContext) {
|
|
mActiveBrowsingContextInChrome = aContext;
|
|
}
|
|
|
|
BrowsingContext* nsFocusManager::GetActiveBrowsingContextInChrome() {
|
|
return mActiveBrowsingContextInChrome;
|
|
}
|
|
|
|
void nsFocusManager::SetFocusedWindowInternal(nsPIDOMWindowOuter* aWindow) {
|
|
if (!PointerUnlocker::sActiveUnlocker &&
|
|
nsContentUtils::IsInPointerLockContext(mFocusedWindow) &&
|
|
!nsContentUtils::IsInPointerLockContext(aWindow)) {
|
|
nsCOMPtr<nsIRunnable> runnable = new PointerUnlocker();
|
|
NS_DispatchToCurrentThread(runnable);
|
|
}
|
|
|
|
// Update the last focus time on any affected documents
|
|
if (aWindow && aWindow != mFocusedWindow) {
|
|
const TimeStamp now(TimeStamp::Now());
|
|
for (Document* doc = aWindow->GetExtantDoc(); doc;
|
|
doc = doc->GetInProcessParentDocument()) {
|
|
doc->SetLastFocusTime(now);
|
|
}
|
|
}
|
|
|
|
mFocusedWindow = aWindow;
|
|
SetFocusedBrowsingContext(aWindow ? aWindow->GetBrowsingContext() : nullptr);
|
|
}
|
|
|
|
void nsFocusManager::MarkUncollectableForCCGeneration(uint32_t aGeneration) {
|
|
if (!sInstance) {
|
|
return;
|
|
}
|
|
|
|
if (sInstance->mActiveWindow) {
|
|
sInstance->mActiveWindow->MarkUncollectableForCCGeneration(aGeneration);
|
|
}
|
|
if (sInstance->mFocusedWindow) {
|
|
sInstance->mFocusedWindow->MarkUncollectableForCCGeneration(aGeneration);
|
|
}
|
|
if (sInstance->mWindowBeingLowered) {
|
|
sInstance->mWindowBeingLowered->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mFocusedElement) {
|
|
sInstance->mFocusedElement->OwnerDoc()->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mFirstBlurEvent) {
|
|
sInstance->mFirstBlurEvent->OwnerDoc()->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
if (sInstance->mFirstFocusEvent) {
|
|
sInstance->mFirstFocusEvent->OwnerDoc()->MarkUncollectableForCCGeneration(
|
|
aGeneration);
|
|
}
|
|
}
|
|
|
|
bool nsFocusManager::CanSkipFocus(nsIContent* aContent) {
|
|
if (!aContent || nsContentUtils::IsChromeDoc(aContent->OwnerDoc())) {
|
|
return false;
|
|
}
|
|
|
|
if (mFocusedElement == aContent) {
|
|
return true;
|
|
}
|
|
|
|
nsIDocShell* ds = aContent->OwnerDoc()->GetDocShell();
|
|
if (!ds) {
|
|
return true;
|
|
}
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
nsCOMPtr<nsIDocShellTreeItem> root;
|
|
ds->GetInProcessRootTreeItem(getter_AddRefs(root));
|
|
nsCOMPtr<nsPIDOMWindowOuter> newRootWindow =
|
|
root ? root->GetWindow() : nullptr;
|
|
if (mActiveWindow != newRootWindow) {
|
|
nsPIDOMWindowOuter* outerWindow = aContent->OwnerDoc()->GetWindow();
|
|
if (outerWindow && outerWindow->GetFocusedElement() == aContent) {
|
|
return true;
|
|
}
|
|
}
|
|
} else {
|
|
BrowsingContext* bc = aContent->OwnerDoc()->GetBrowsingContext();
|
|
BrowsingContext* top = bc ? bc->Top() : nullptr;
|
|
if (GetActiveBrowsingContext() != top) {
|
|
nsPIDOMWindowOuter* outerWindow = aContent->OwnerDoc()->GetWindow();
|
|
if (outerWindow && outerWindow->GetFocusedElement() == aContent) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsresult NS_NewFocusManager(nsIFocusManager** aResult) {
|
|
NS_IF_ADDREF(*aResult = nsFocusManager::GetFocusManager());
|
|
return NS_OK;
|
|
}
|