2669e87017
Backed out changeset e2ab653f688a (bug 1008917) Backed out changeset b52154d8d900 (bug 1008917) Backed out changeset 2ab5b01da4de (bug 1008917) Backed out changeset f7a38df1d44f (bug 1008917) Backed out changeset 80304bb9a572 (bug 1008917) Backed out changeset 10ed89a302e9 (bug 1008917) Backed out changeset 161c41991d46 (bug 1008917) Backed out changeset 25b2475d2368 (bug 1008917) Backed out changeset b8000b31277c (bug 1008917) Backed out changeset 9afa5e7715e1 (bug 1008917) Backed out changeset 5c380c21351f (bug 1008917)
1613 lines
51 KiB
C++
1613 lines
51 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "nsCOMPtr.h"
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#include "nsComboboxControlFrame.h"
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#include "nsFocusManager.h"
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#include "nsFormControlFrame.h"
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#include "nsGkAtoms.h"
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#include "nsCSSAnonBoxes.h"
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#include "nsHTMLParts.h"
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#include "nsIFormControl.h"
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#include "nsNameSpaceManager.h"
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#include "nsIListControlFrame.h"
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#include "nsPIDOMWindow.h"
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#include "nsIPresShell.h"
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#include "nsContentList.h"
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#include "nsView.h"
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#include "nsViewManager.h"
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#include "nsIDOMEventListener.h"
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#include "nsIDOMNode.h"
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#include "nsISelectControlFrame.h"
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#include "nsContentUtils.h"
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#include "nsIDocument.h"
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#include "nsINodeInfo.h"
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#include "nsIScrollableFrame.h"
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#include "nsListControlFrame.h"
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#include "nsAutoPtr.h"
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#include "nsStyleSet.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsLayoutUtils.h"
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#include "nsDisplayList.h"
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#include "nsITheme.h"
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#include "nsRenderingContext.h"
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#include "mozilla/Likely.h"
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#include <algorithm>
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#include "nsTextNode.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/unused.h"
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using namespace mozilla;
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NS_IMETHODIMP
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nsComboboxControlFrame::RedisplayTextEvent::Run()
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{
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if (mControlFrame)
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mControlFrame->HandleRedisplayTextEvent();
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return NS_OK;
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}
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class nsPresState;
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#define FIX_FOR_BUG_53259
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// Drop down list event management.
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// The combo box uses the following strategy for managing the drop-down list.
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// If the combo box or its arrow button is clicked on the drop-down list is displayed
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// If mouse exits the combo box with the drop-down list displayed the drop-down list
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// is asked to capture events
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// The drop-down list will capture all events including mouse down and up and will always
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// return with ListWasSelected method call regardless of whether an item in the list was
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// actually selected.
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// The ListWasSelected code will turn off mouse-capture for the drop-down list.
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// The drop-down list does not explicitly set capture when it is in the drop-down mode.
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/**
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* Helper class that listens to the combo boxes button. If the button is pressed the
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* combo box is toggled to open or close. this is used by Accessibility which presses
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* that button Programmatically.
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*/
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class nsComboButtonListener : public nsIDOMEventListener
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{
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public:
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NS_DECL_ISUPPORTS
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NS_IMETHOD HandleEvent(nsIDOMEvent*) MOZ_OVERRIDE
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{
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mComboBox->ShowDropDown(!mComboBox->IsDroppedDown());
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return NS_OK;
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}
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nsComboButtonListener(nsComboboxControlFrame* aCombobox)
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{
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mComboBox = aCombobox;
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}
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virtual ~nsComboButtonListener() {}
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nsComboboxControlFrame* mComboBox;
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};
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NS_IMPL_ISUPPORTS(nsComboButtonListener,
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nsIDOMEventListener)
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// static class data member for Bug 32920
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nsComboboxControlFrame* nsComboboxControlFrame::sFocused = nullptr;
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nsIFrame*
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NS_NewComboboxControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, nsFrameState aStateFlags)
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{
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nsComboboxControlFrame* it = new (aPresShell) nsComboboxControlFrame(aContext);
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if (it) {
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// set the state flags (if any are provided)
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it->AddStateBits(aStateFlags);
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}
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return it;
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsComboboxControlFrame)
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//-----------------------------------------------------------
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// Reflow Debugging Macros
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// These let us "see" how many reflow counts are happening
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//-----------------------------------------------------------
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#ifdef DO_REFLOW_COUNTER
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#define MAX_REFLOW_CNT 1024
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static int32_t gTotalReqs = 0;;
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static int32_t gTotalReflows = 0;;
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static int32_t gReflowControlCntRQ[MAX_REFLOW_CNT];
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static int32_t gReflowControlCnt[MAX_REFLOW_CNT];
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static int32_t gReflowInx = -1;
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#define REFLOW_COUNTER() \
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if (mReflowId > -1) \
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gReflowControlCnt[mReflowId]++;
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#define REFLOW_COUNTER_REQUEST() \
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if (mReflowId > -1) \
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gReflowControlCntRQ[mReflowId]++;
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#define REFLOW_COUNTER_DUMP(__desc) \
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if (mReflowId > -1) {\
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gTotalReqs += gReflowControlCntRQ[mReflowId];\
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gTotalReflows += gReflowControlCnt[mReflowId];\
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printf("** Id:%5d %s RF: %d RQ: %d %d/%d %5.2f\n", \
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mReflowId, (__desc), \
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gReflowControlCnt[mReflowId], \
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gReflowControlCntRQ[mReflowId],\
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gTotalReflows, gTotalReqs, float(gTotalReflows)/float(gTotalReqs)*100.0f);\
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}
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#define REFLOW_COUNTER_INIT() \
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if (gReflowInx < MAX_REFLOW_CNT) { \
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gReflowInx++; \
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mReflowId = gReflowInx; \
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gReflowControlCnt[mReflowId] = 0; \
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gReflowControlCntRQ[mReflowId] = 0; \
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} else { \
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mReflowId = -1; \
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}
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// reflow messages
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#define REFLOW_DEBUG_MSG(_msg1) printf((_msg1))
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#define REFLOW_DEBUG_MSG2(_msg1, _msg2) printf((_msg1), (_msg2))
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#define REFLOW_DEBUG_MSG3(_msg1, _msg2, _msg3) printf((_msg1), (_msg2), (_msg3))
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#define REFLOW_DEBUG_MSG4(_msg1, _msg2, _msg3, _msg4) printf((_msg1), (_msg2), (_msg3), (_msg4))
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#else //-------------
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#define REFLOW_COUNTER_REQUEST()
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#define REFLOW_COUNTER()
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#define REFLOW_COUNTER_DUMP(__desc)
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#define REFLOW_COUNTER_INIT()
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#define REFLOW_DEBUG_MSG(_msg)
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#define REFLOW_DEBUG_MSG2(_msg1, _msg2)
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#define REFLOW_DEBUG_MSG3(_msg1, _msg2, _msg3)
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#define REFLOW_DEBUG_MSG4(_msg1, _msg2, _msg3, _msg4)
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#endif
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//------------------------------------------
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// This is for being VERY noisy
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//------------------------------------------
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#ifdef DO_VERY_NOISY
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#define REFLOW_NOISY_MSG(_msg1) printf((_msg1))
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#define REFLOW_NOISY_MSG2(_msg1, _msg2) printf((_msg1), (_msg2))
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#define REFLOW_NOISY_MSG3(_msg1, _msg2, _msg3) printf((_msg1), (_msg2), (_msg3))
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#define REFLOW_NOISY_MSG4(_msg1, _msg2, _msg3, _msg4) printf((_msg1), (_msg2), (_msg3), (_msg4))
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#else
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#define REFLOW_NOISY_MSG(_msg)
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#define REFLOW_NOISY_MSG2(_msg1, _msg2)
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#define REFLOW_NOISY_MSG3(_msg1, _msg2, _msg3)
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#define REFLOW_NOISY_MSG4(_msg1, _msg2, _msg3, _msg4)
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#endif
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//------------------------------------------
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// Displays value in pixels or twips
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//------------------------------------------
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#ifdef DO_PIXELS
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#define PX(__v) __v / 15
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#else
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#define PX(__v) __v
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#endif
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//------------------------------------------------------
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//-- Done with macros
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//------------------------------------------------------
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nsComboboxControlFrame::nsComboboxControlFrame(nsStyleContext* aContext)
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: nsBlockFrame(aContext)
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, mDisplayFrame(nullptr)
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, mButtonFrame(nullptr)
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, mDropdownFrame(nullptr)
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, mListControlFrame(nullptr)
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, mDisplayWidth(0)
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, mRecentSelectedIndex(NS_SKIP_NOTIFY_INDEX)
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, mDisplayedIndex(-1)
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, mLastDropDownAboveScreenY(nscoord_MIN)
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, mLastDropDownBelowScreenY(nscoord_MIN)
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, mDroppedDown(false)
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, mInRedisplayText(false)
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, mDelayedShowDropDown(false)
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{
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REFLOW_COUNTER_INIT()
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}
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//--------------------------------------------------------------
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nsComboboxControlFrame::~nsComboboxControlFrame()
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{
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REFLOW_COUNTER_DUMP("nsCCF");
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}
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//--------------------------------------------------------------
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NS_QUERYFRAME_HEAD(nsComboboxControlFrame)
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NS_QUERYFRAME_ENTRY(nsIComboboxControlFrame)
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NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
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NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
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NS_QUERYFRAME_ENTRY(nsISelectControlFrame)
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NS_QUERYFRAME_ENTRY(nsIStatefulFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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#ifdef ACCESSIBILITY
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a11y::AccType
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nsComboboxControlFrame::AccessibleType()
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{
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return a11y::eHTMLComboboxType;
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}
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#endif
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void
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nsComboboxControlFrame::SetFocus(bool aOn, bool aRepaint)
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{
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nsWeakFrame weakFrame(this);
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if (aOn) {
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nsListControlFrame::ComboboxFocusSet();
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sFocused = this;
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if (mDelayedShowDropDown) {
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ShowDropDown(true); // might destroy us
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if (!weakFrame.IsAlive()) {
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return;
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}
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}
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} else {
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sFocused = nullptr;
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mDelayedShowDropDown = false;
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if (mDroppedDown) {
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mListControlFrame->ComboboxFinish(mDisplayedIndex); // might destroy us
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if (!weakFrame.IsAlive()) {
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return;
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}
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}
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// May delete |this|.
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mListControlFrame->FireOnChange();
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}
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if (!weakFrame.IsAlive()) {
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return;
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}
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// This is needed on a temporary basis. It causes the focus
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// rect to be drawn. This is much faster than ReResolvingStyle
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// Bug 32920
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InvalidateFrame();
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}
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void
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nsComboboxControlFrame::ShowPopup(bool aShowPopup)
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{
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nsView* view = mDropdownFrame->GetView();
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nsViewManager* viewManager = view->GetViewManager();
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if (aShowPopup) {
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nsRect rect = mDropdownFrame->GetRect();
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rect.x = rect.y = 0;
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viewManager->ResizeView(view, rect);
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viewManager->SetViewVisibility(view, nsViewVisibility_kShow);
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} else {
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viewManager->SetViewVisibility(view, nsViewVisibility_kHide);
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nsRect emptyRect(0, 0, 0, 0);
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viewManager->ResizeView(view, emptyRect);
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}
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// fire a popup dom event
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nsEventStatus status = nsEventStatus_eIgnore;
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WidgetMouseEvent event(true, aShowPopup ?
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NS_XUL_POPUP_SHOWING : NS_XUL_POPUP_HIDING, nullptr,
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WidgetMouseEvent::eReal);
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nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
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if (shell)
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shell->HandleDOMEventWithTarget(mContent, &event, &status);
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}
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bool
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nsComboboxControlFrame::ShowList(bool aShowList)
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{
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nsView* view = mDropdownFrame->GetView();
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if (aShowList) {
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NS_ASSERTION(!view->HasWidget(),
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"We shouldn't have a widget before we need to display the popup");
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// Create the widget for the drop-down list
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view->GetViewManager()->SetViewFloating(view, true);
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nsWidgetInitData widgetData;
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widgetData.mWindowType = eWindowType_popup;
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widgetData.mBorderStyle = eBorderStyle_default;
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view->CreateWidgetForPopup(&widgetData);
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} else {
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nsIWidget* widget = view->GetWidget();
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if (widget) {
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// We must do this before ShowPopup in case it destroys us (bug 813442).
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widget->CaptureRollupEvents(this, false);
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}
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}
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nsWeakFrame weakFrame(this);
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ShowPopup(aShowList); // might destroy us
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if (!weakFrame.IsAlive()) {
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return false;
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}
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mDroppedDown = aShowList;
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nsIWidget* widget = view->GetWidget();
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if (mDroppedDown) {
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// The listcontrol frame will call back to the nsComboboxControlFrame's
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// ListWasSelected which will stop the capture.
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mListControlFrame->AboutToDropDown();
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mListControlFrame->CaptureMouseEvents(true);
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if (widget) {
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widget->CaptureRollupEvents(this, true);
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}
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} else {
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if (widget) {
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view->DestroyWidget();
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}
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}
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return weakFrame.IsAlive();
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}
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class nsResizeDropdownAtFinalPosition
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: public nsIReflowCallback, public nsRunnable
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{
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public:
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nsResizeDropdownAtFinalPosition(nsComboboxControlFrame* aFrame)
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: mFrame(aFrame)
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{
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MOZ_COUNT_CTOR(nsResizeDropdownAtFinalPosition);
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}
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~nsResizeDropdownAtFinalPosition()
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{
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MOZ_COUNT_DTOR(nsResizeDropdownAtFinalPosition);
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}
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virtual bool ReflowFinished() MOZ_OVERRIDE
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{
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Run();
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NS_RELEASE_THIS();
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return false;
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}
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virtual void ReflowCallbackCanceled() MOZ_OVERRIDE
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{
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NS_RELEASE_THIS();
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}
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NS_IMETHODIMP Run()
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{
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if (mFrame.IsAlive()) {
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static_cast<nsComboboxControlFrame*>(mFrame.GetFrame())->
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AbsolutelyPositionDropDown();
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}
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return NS_OK;
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}
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nsWeakFrame mFrame;
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};
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nsresult
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nsComboboxControlFrame::ReflowDropdown(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState)
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{
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// All we want out of it later on, really, is the height of a row, so we
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// don't even need to cache mDropdownFrame's ascent or anything. If we don't
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// need to reflow it, just bail out here.
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if (!aReflowState.ShouldReflowAllKids() &&
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!NS_SUBTREE_DIRTY(mDropdownFrame)) {
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return NS_OK;
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}
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// XXXbz this will, for small-height dropdowns, have extra space on the right
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// edge for the scrollbar we don't show... but that's the best we can do here
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// for now.
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nsSize availSize(aReflowState.AvailableWidth(), NS_UNCONSTRAINEDSIZE);
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nsHTMLReflowState kidReflowState(aPresContext, aReflowState, mDropdownFrame,
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availSize);
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// If the dropdown's intrinsic width is narrower than our specified width,
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// then expand it out. We want our border-box width to end up the same as
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// the dropdown's so account for both sets of mComputedBorderPadding.
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nscoord forcedWidth = aReflowState.ComputedWidth() +
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aReflowState.ComputedPhysicalBorderPadding().LeftRight() -
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kidReflowState.ComputedPhysicalBorderPadding().LeftRight();
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kidReflowState.SetComputedWidth(std::max(kidReflowState.ComputedWidth(),
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forcedWidth));
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// ensure we start off hidden
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if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
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nsView* view = mDropdownFrame->GetView();
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nsViewManager* viewManager = view->GetViewManager();
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viewManager->SetViewVisibility(view, nsViewVisibility_kHide);
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nsRect emptyRect(0, 0, 0, 0);
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viewManager->ResizeView(view, emptyRect);
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}
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// Allow the child to move/size/change-visibility its view if it's currently
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// dropped down
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int32_t flags = NS_FRAME_NO_MOVE_FRAME | NS_FRAME_NO_VISIBILITY | NS_FRAME_NO_SIZE_VIEW;
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if (mDroppedDown) {
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flags = 0;
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}
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nsRect rect = mDropdownFrame->GetRect();
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nsHTMLReflowMetrics desiredSize(aReflowState);
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nsReflowStatus ignoredStatus;
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nsresult rv = ReflowChild(mDropdownFrame, aPresContext, desiredSize,
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kidReflowState, rect.x, rect.y, flags,
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ignoredStatus);
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// Set the child's width and height to its desired size
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FinishReflowChild(mDropdownFrame, aPresContext, desiredSize,
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&kidReflowState, rect.x, rect.y, flags);
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return rv;
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}
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nsPoint
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nsComboboxControlFrame::GetCSSTransformTranslation()
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{
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nsIFrame* frame = this;
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bool is3DTransform = false;
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gfxMatrix transform;
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while (frame) {
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nsIFrame* parent;
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gfx3DMatrix ctm = frame->GetTransformMatrix(nullptr, &parent);
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gfxMatrix matrix;
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if (ctm.Is2D(&matrix)) {
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transform = transform * matrix;
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} else {
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is3DTransform = true;
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break;
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}
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frame = parent;
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}
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nsPoint translation;
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if (!is3DTransform && !transform.HasNonTranslation()) {
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nsPresContext* pc = PresContext();
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gfxPoint pixelTranslation = transform.GetTranslation();
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int32_t apd = pc->AppUnitsPerDevPixel();
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translation.x = NSFloatPixelsToAppUnits(float(pixelTranslation.x), apd);
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translation.y = NSFloatPixelsToAppUnits(float(pixelTranslation.y), apd);
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// To get the translation introduced only by transforms we subtract the
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// regular non-transform translation.
|
|
nsRootPresContext* rootPC = pc->GetRootPresContext();
|
|
if (rootPC) {
|
|
translation -= GetOffsetToCrossDoc(rootPC->PresShell()->GetRootFrame());
|
|
} else {
|
|
translation.x = translation.y = 0;
|
|
}
|
|
}
|
|
return translation;
|
|
}
|
|
|
|
class nsAsyncRollup : public nsRunnable
|
|
{
|
|
public:
|
|
nsAsyncRollup(nsComboboxControlFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHODIMP Run()
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
static_cast<nsComboboxControlFrame*>(mFrame.GetFrame())
|
|
->RollupFromList();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
nsWeakFrame mFrame;
|
|
};
|
|
|
|
class nsAsyncResize : public nsRunnable
|
|
{
|
|
public:
|
|
nsAsyncResize(nsComboboxControlFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHODIMP Run()
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
nsComboboxControlFrame* combo =
|
|
static_cast<nsComboboxControlFrame*>(mFrame.GetFrame());
|
|
static_cast<nsListControlFrame*>(combo->mDropdownFrame)->
|
|
SetSuppressScrollbarUpdate(true);
|
|
nsCOMPtr<nsIPresShell> shell = mFrame->PresContext()->PresShell();
|
|
shell->FrameNeedsReflow(combo->mDropdownFrame, nsIPresShell::eResize,
|
|
NS_FRAME_IS_DIRTY);
|
|
shell->FlushPendingNotifications(Flush_Layout);
|
|
if (mFrame.IsAlive()) {
|
|
combo = static_cast<nsComboboxControlFrame*>(mFrame.GetFrame());
|
|
static_cast<nsListControlFrame*>(combo->mDropdownFrame)->
|
|
SetSuppressScrollbarUpdate(false);
|
|
if (combo->mDelayedShowDropDown) {
|
|
combo->ShowDropDown(true);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
nsWeakFrame mFrame;
|
|
};
|
|
|
|
void
|
|
nsComboboxControlFrame::GetAvailableDropdownSpace(nscoord* aAbove,
|
|
nscoord* aBelow,
|
|
nsPoint* aTranslation)
|
|
{
|
|
// Note: At first glance, it appears that you could simply get the absolute
|
|
// bounding box for the dropdown list by first getting its view, then getting
|
|
// the view's nsIWidget, then asking the nsIWidget for its AbsoluteBounds.
|
|
// The problem with this approach, is that the dropdown lists y location can
|
|
// change based on whether the dropdown is placed below or above the display
|
|
// frame. The approach, taken here is to get the absolute position of the
|
|
// display frame and use its location to determine if the dropdown will go
|
|
// offscreen.
|
|
|
|
// Normal frame geometry (eg GetOffsetTo, mRect) doesn't include transforms.
|
|
// In the special case that our transform is only a 2D translation we
|
|
// introduce this hack so that the dropdown will show up in the right place.
|
|
*aTranslation = GetCSSTransformTranslation();
|
|
*aAbove = 0;
|
|
*aBelow = 0;
|
|
|
|
nsRect screen = nsFormControlFrame::GetUsableScreenRect(PresContext());
|
|
if (mLastDropDownBelowScreenY == nscoord_MIN) {
|
|
nsRect thisScreenRect = GetScreenRectInAppUnits();
|
|
mLastDropDownBelowScreenY = thisScreenRect.YMost() + aTranslation->y;
|
|
mLastDropDownAboveScreenY = thisScreenRect.y + aTranslation->y;
|
|
}
|
|
|
|
nscoord minY;
|
|
nsPresContext* pc = PresContext()->GetToplevelContentDocumentPresContext();
|
|
nsIFrame* root = pc ? pc->PresShell()->GetRootFrame() : nullptr;
|
|
if (root) {
|
|
minY = root->GetScreenRectInAppUnits().y;
|
|
if (mLastDropDownBelowScreenY < minY) {
|
|
// Don't allow the drop-down to be placed above the content area.
|
|
return;
|
|
}
|
|
} else {
|
|
minY = screen.y;
|
|
}
|
|
|
|
nscoord below = screen.YMost() - mLastDropDownBelowScreenY;
|
|
nscoord above = mLastDropDownAboveScreenY - minY;
|
|
|
|
// If the difference between the space above and below is less
|
|
// than a row-height, then we favor the space below.
|
|
if (above >= below) {
|
|
nsListControlFrame* lcf = static_cast<nsListControlFrame*>(mDropdownFrame);
|
|
nscoord rowHeight = lcf->GetHeightOfARow();
|
|
if (above < below + rowHeight) {
|
|
above -= rowHeight;
|
|
}
|
|
}
|
|
|
|
*aBelow = below;
|
|
*aAbove = above;
|
|
}
|
|
|
|
nsComboboxControlFrame::DropDownPositionState
|
|
nsComboboxControlFrame::AbsolutelyPositionDropDown()
|
|
{
|
|
nsPoint translation;
|
|
nscoord above, below;
|
|
mLastDropDownBelowScreenY = nscoord_MIN;
|
|
GetAvailableDropdownSpace(&above, &below, &translation);
|
|
if (above <= 0 && below <= 0) {
|
|
if (IsDroppedDown()) {
|
|
// Hide the view immediately to minimize flicker.
|
|
nsView* view = mDropdownFrame->GetView();
|
|
view->GetViewManager()->SetViewVisibility(view, nsViewVisibility_kHide);
|
|
NS_DispatchToCurrentThread(new nsAsyncRollup(this));
|
|
}
|
|
return eDropDownPositionSuppressed;
|
|
}
|
|
|
|
nsSize dropdownSize = mDropdownFrame->GetSize();
|
|
nscoord height = std::max(above, below);
|
|
nsListControlFrame* lcf = static_cast<nsListControlFrame*>(mDropdownFrame);
|
|
if (height < dropdownSize.height) {
|
|
if (lcf->GetNumDisplayRows() > 1) {
|
|
// The drop-down doesn't fit and currently shows more than 1 row -
|
|
// schedule a resize to show fewer rows.
|
|
NS_DispatchToCurrentThread(new nsAsyncResize(this));
|
|
return eDropDownPositionPendingResize;
|
|
}
|
|
} else if (height > (dropdownSize.height + lcf->GetHeightOfARow() * 1.5) &&
|
|
lcf->GetDropdownCanGrow()) {
|
|
// The drop-down fits but there is room for at least 1.5 more rows -
|
|
// schedule a resize to show more rows if it has more rows to show.
|
|
// (1.5 rows for good measure to avoid any rounding issues that would
|
|
// lead to a loop of reflow requests)
|
|
NS_DispatchToCurrentThread(new nsAsyncResize(this));
|
|
return eDropDownPositionPendingResize;
|
|
}
|
|
|
|
// Position the drop-down below if there is room, otherwise place it above
|
|
// if there is room. If there is no room for it on either side then place
|
|
// it below (to avoid overlapping UI like the URL bar).
|
|
bool b = dropdownSize.height <= below || dropdownSize.height > above;
|
|
nsPoint dropdownPosition(0, b ? GetRect().height : -dropdownSize.height);
|
|
if (StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
|
|
// Align the right edge of the drop-down with the right edge of the control.
|
|
dropdownPosition.x = GetRect().width - dropdownSize.width;
|
|
}
|
|
|
|
// Don't position the view unless the position changed since it might cause
|
|
// a call to NotifyGeometryChange() and an infinite loop here.
|
|
const nsPoint currentPos = mDropdownFrame->GetPosition();
|
|
const nsPoint newPos = dropdownPosition + translation;
|
|
if (currentPos != newPos) {
|
|
mDropdownFrame->SetPosition(newPos);
|
|
nsContainerFrame::PositionFrameView(mDropdownFrame);
|
|
}
|
|
return eDropDownPositionFinal;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::NotifyGeometryChange()
|
|
{
|
|
// We don't need to resize if we're not dropped down since ShowDropDown
|
|
// does that, or if we're dirty then the reflow callback does it,
|
|
// or if we have a delayed ShowDropDown pending.
|
|
if (IsDroppedDown() &&
|
|
!(GetStateBits() & NS_FRAME_IS_DIRTY) &&
|
|
!mDelayedShowDropDown) {
|
|
// Async because we're likely in a middle of a scroll here so
|
|
// frame/view positions are in flux.
|
|
nsRefPtr<nsResizeDropdownAtFinalPosition> resize =
|
|
new nsResizeDropdownAtFinalPosition(this);
|
|
NS_DispatchToCurrentThread(resize);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------
|
|
//
|
|
//----------------------------------------------------------
|
|
#ifdef DO_REFLOW_DEBUG
|
|
static int myCounter = 0;
|
|
|
|
static void printSize(char * aDesc, nscoord aSize)
|
|
{
|
|
printf(" %s: ", aDesc);
|
|
if (aSize == NS_UNCONSTRAINEDSIZE) {
|
|
printf("UC");
|
|
} else {
|
|
printf("%d", PX(aSize));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//-------------------------------------------------------------------
|
|
//-- Main Reflow for the Combobox
|
|
//-------------------------------------------------------------------
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetIntrinsicWidth(nsRenderingContext* aRenderingContext,
|
|
nsLayoutUtils::IntrinsicWidthType aType)
|
|
{
|
|
// get the scrollbar width, we'll use this later
|
|
nscoord scrollbarWidth = 0;
|
|
nsPresContext* presContext = PresContext();
|
|
if (mListControlFrame) {
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(scrollable, "List must be a scrollable frame");
|
|
scrollbarWidth = scrollable->GetNondisappearingScrollbarWidth(
|
|
presContext, aRenderingContext);
|
|
}
|
|
|
|
nscoord displayWidth = 0;
|
|
if (MOZ_LIKELY(mDisplayFrame)) {
|
|
displayWidth = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
|
|
mDisplayFrame,
|
|
aType);
|
|
}
|
|
|
|
if (mDropdownFrame) {
|
|
nscoord dropdownContentWidth;
|
|
bool isUsingOverlayScrollbars =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_UseOverlayScrollbars) != 0;
|
|
if (aType == nsLayoutUtils::MIN_WIDTH) {
|
|
dropdownContentWidth = mDropdownFrame->GetMinWidth(aRenderingContext);
|
|
if (isUsingOverlayScrollbars) {
|
|
dropdownContentWidth += scrollbarWidth;
|
|
}
|
|
} else {
|
|
NS_ASSERTION(aType == nsLayoutUtils::PREF_WIDTH, "Unexpected type");
|
|
dropdownContentWidth = mDropdownFrame->GetPrefWidth(aRenderingContext);
|
|
if (isUsingOverlayScrollbars) {
|
|
dropdownContentWidth += scrollbarWidth;
|
|
}
|
|
}
|
|
dropdownContentWidth = NSCoordSaturatingSubtract(dropdownContentWidth,
|
|
scrollbarWidth,
|
|
nscoord_MAX);
|
|
|
|
displayWidth = std::max(dropdownContentWidth, displayWidth);
|
|
}
|
|
|
|
// add room for the dropmarker button if there is one
|
|
if (!IsThemed() || presContext->GetTheme()->ThemeNeedsComboboxDropmarker())
|
|
displayWidth += scrollbarWidth;
|
|
|
|
return displayWidth;
|
|
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord minWidth;
|
|
DISPLAY_MIN_WIDTH(this, minWidth);
|
|
minWidth = GetIntrinsicWidth(aRenderingContext, nsLayoutUtils::MIN_WIDTH);
|
|
return minWidth;
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord prefWidth;
|
|
DISPLAY_PREF_WIDTH(this, prefWidth);
|
|
prefWidth = GetIntrinsicWidth(aRenderingContext, nsLayoutUtils::PREF_WIDTH);
|
|
return prefWidth;
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
// Constraints we try to satisfy:
|
|
|
|
// 1) Default width of button is the vertical scrollbar size
|
|
// 2) If the width of button is bigger than our width, set width of
|
|
// button to 0.
|
|
// 3) Default height of button is height of display area
|
|
// 4) Width of display area is whatever is left over from our width after
|
|
// allocating width for the button.
|
|
// 5) Height of display area is GetHeightOfARow() on the
|
|
// mListControlFrame.
|
|
|
|
if (!mDisplayFrame || !mButtonFrame || !mDropdownFrame) {
|
|
NS_ERROR("Why did the frame constructor allow this to happen? Fix it!!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// Make sure the displayed text is the same as the selected option, bug 297389.
|
|
int32_t selectedIndex;
|
|
nsAutoString selectedOptionText;
|
|
if (!mDroppedDown) {
|
|
selectedIndex = mListControlFrame->GetSelectedIndex();
|
|
}
|
|
else {
|
|
// In dropped down mode the "selected index" is the hovered menu item,
|
|
// we want the last selected item which is |mDisplayedIndex| in this case.
|
|
selectedIndex = mDisplayedIndex;
|
|
}
|
|
if (selectedIndex != -1) {
|
|
mListControlFrame->GetOptionText(selectedIndex, selectedOptionText);
|
|
}
|
|
if (mDisplayedOptionText != selectedOptionText) {
|
|
RedisplayText(selectedIndex);
|
|
}
|
|
|
|
// First reflow our dropdown so that we know how tall we should be.
|
|
ReflowDropdown(aPresContext, aReflowState);
|
|
nsRefPtr<nsResizeDropdownAtFinalPosition> resize =
|
|
new nsResizeDropdownAtFinalPosition(this);
|
|
if (NS_SUCCEEDED(aPresContext->PresShell()->PostReflowCallback(resize))) {
|
|
// The reflow callback queue doesn't AddRef so we keep it alive until
|
|
// it's released in its ReflowFinished / ReflowCallbackCanceled.
|
|
unused << resize.forget();
|
|
}
|
|
|
|
// Get the width of the vertical scrollbar. That will be the width of the
|
|
// dropdown button.
|
|
nscoord buttonWidth;
|
|
const nsStyleDisplay *disp = StyleDisplay();
|
|
if (IsThemed(disp) && !aPresContext->GetTheme()->ThemeNeedsComboboxDropmarker()) {
|
|
buttonWidth = 0;
|
|
}
|
|
else {
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(scrollable, "List must be a scrollable frame");
|
|
buttonWidth = scrollable->GetNondisappearingScrollbarWidth(
|
|
PresContext(), aReflowState.rendContext);
|
|
if (buttonWidth > aReflowState.ComputedWidth()) {
|
|
buttonWidth = 0;
|
|
}
|
|
}
|
|
|
|
mDisplayWidth = aReflowState.ComputedWidth() - buttonWidth;
|
|
|
|
nsresult rv = nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
|
|
aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// The button should occupy the same space as a scrollbar
|
|
nsRect buttonRect = mButtonFrame->GetRect();
|
|
|
|
if (StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
|
|
buttonRect.x = aReflowState.ComputedPhysicalBorderPadding().left -
|
|
aReflowState.ComputedPhysicalPadding().left;
|
|
}
|
|
else {
|
|
buttonRect.x = aReflowState.ComputedPhysicalBorderPadding().LeftRight() +
|
|
mDisplayWidth -
|
|
(aReflowState.ComputedPhysicalBorderPadding().right -
|
|
aReflowState.ComputedPhysicalPadding().right);
|
|
}
|
|
buttonRect.width = buttonWidth;
|
|
|
|
buttonRect.y = this->GetUsedBorder().top;
|
|
buttonRect.height = mDisplayFrame->GetRect().height +
|
|
this->GetUsedPadding().TopBottom();
|
|
|
|
mButtonFrame->SetRect(buttonRect);
|
|
|
|
if (!NS_INLINE_IS_BREAK_BEFORE(aStatus) &&
|
|
!NS_FRAME_IS_FULLY_COMPLETE(aStatus)) {
|
|
// This frame didn't fit inside a fragmentation container. Splitting
|
|
// a nsComboboxControlFrame makes no sense, so we override the status here.
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
//--------------------------------------------------------------
|
|
|
|
nsIAtom*
|
|
nsComboboxControlFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::comboboxControlFrame;
|
|
}
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
nsresult
|
|
nsComboboxControlFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("ComboboxControl"), aResult);
|
|
}
|
|
#endif
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIComboboxControlFrame
|
|
//----------------------------------------------------------------------
|
|
void
|
|
nsComboboxControlFrame::ShowDropDown(bool aDoDropDown)
|
|
{
|
|
mDelayedShowDropDown = false;
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (aDoDropDown && eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return;
|
|
}
|
|
|
|
if (!mDroppedDown && aDoDropDown) {
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (!fm || fm->GetFocusedContent() == GetContent()) {
|
|
DropDownPositionState state = AbsolutelyPositionDropDown();
|
|
if (state == eDropDownPositionFinal) {
|
|
ShowList(aDoDropDown); // might destroy us
|
|
} else if (state == eDropDownPositionPendingResize) {
|
|
// Delay until after the resize reflow, see nsAsyncResize.
|
|
mDelayedShowDropDown = true;
|
|
}
|
|
} else {
|
|
// Delay until we get focus, see SetFocus().
|
|
mDelayedShowDropDown = true;
|
|
}
|
|
} else if (mDroppedDown && !aDoDropDown) {
|
|
ShowList(aDoDropDown); // might destroy us
|
|
}
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::SetDropDown(nsIFrame* aDropDownFrame)
|
|
{
|
|
mDropdownFrame = aDropDownFrame;
|
|
mListControlFrame = do_QueryFrame(mDropdownFrame);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsComboboxControlFrame::GetDropDown()
|
|
{
|
|
return mDropdownFrame;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::RedisplaySelectedText()
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
return RedisplayText(mListControlFrame->GetSelectedIndex());
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::RedisplayText(int32_t aIndex)
|
|
{
|
|
// Get the text to display
|
|
if (aIndex != -1) {
|
|
mListControlFrame->GetOptionText(aIndex, mDisplayedOptionText);
|
|
} else {
|
|
mDisplayedOptionText.Truncate();
|
|
}
|
|
mDisplayedIndex = aIndex;
|
|
|
|
REFLOW_DEBUG_MSG2("RedisplayText \"%s\"\n",
|
|
NS_LossyConvertUTF16toASCII(mDisplayedOptionText).get());
|
|
|
|
// Send reflow command because the new text maybe larger
|
|
nsresult rv = NS_OK;
|
|
if (mDisplayContent) {
|
|
// Don't call ActuallyDisplayText(true) directly here since that
|
|
// could cause recursive frame construction. See bug 283117 and the comment in
|
|
// HandleRedisplayTextEvent() below.
|
|
|
|
// Revoke outstanding events to avoid out-of-order events which could mean
|
|
// displaying the wrong text.
|
|
mRedisplayTextEvent.Revoke();
|
|
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"If we happen to run our redisplay event now, we might kill "
|
|
"ourselves!");
|
|
|
|
nsRefPtr<RedisplayTextEvent> event = new RedisplayTextEvent(this);
|
|
mRedisplayTextEvent = event;
|
|
if (!nsContentUtils::AddScriptRunner(event))
|
|
mRedisplayTextEvent.Forget();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::HandleRedisplayTextEvent()
|
|
{
|
|
// First, make sure that the content model is up to date and we've
|
|
// constructed the frames for all our content in the right places.
|
|
// Otherwise they'll end up under the wrong insertion frame when we
|
|
// ActuallyDisplayText, since that flushes out the content sink by
|
|
// calling SetText on a DOM node with aNotify set to true. See bug
|
|
// 289730.
|
|
nsWeakFrame weakThis(this);
|
|
PresContext()->Document()->
|
|
FlushPendingNotifications(Flush_ContentAndNotify);
|
|
if (!weakThis.IsAlive())
|
|
return;
|
|
|
|
// Redirect frame insertions during this method (see GetContentInsertionFrame())
|
|
// so that any reframing that the frame constructor forces upon us is inserted
|
|
// into the correct parent (mDisplayFrame). See bug 282607.
|
|
NS_PRECONDITION(!mInRedisplayText, "Nested RedisplayText");
|
|
mInRedisplayText = true;
|
|
mRedisplayTextEvent.Forget();
|
|
|
|
ActuallyDisplayText(true);
|
|
// XXXbz This should perhaps be eResize. Check.
|
|
PresContext()->PresShell()->FrameNeedsReflow(mDisplayFrame,
|
|
nsIPresShell::eStyleChange,
|
|
NS_FRAME_IS_DIRTY);
|
|
|
|
mInRedisplayText = false;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::ActuallyDisplayText(bool aNotify)
|
|
{
|
|
if (mDisplayedOptionText.IsEmpty()) {
|
|
// Have to use a non-breaking space for line-height calculations
|
|
// to be right
|
|
static const char16_t space = 0xA0;
|
|
mDisplayContent->SetText(&space, 1, aNotify);
|
|
} else {
|
|
mDisplayContent->SetText(mDisplayedOptionText, aNotify);
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
nsComboboxControlFrame::GetIndexOfDisplayArea()
|
|
{
|
|
return mDisplayedIndex;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::DoneAddingChildren(bool aIsDone)
|
|
{
|
|
nsISelectControlFrame* listFrame = do_QueryFrame(mDropdownFrame);
|
|
if (!listFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
return listFrame->DoneAddingChildren(aIsDone);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::AddOption(int32_t aIndex)
|
|
{
|
|
if (aIndex <= mDisplayedIndex) {
|
|
++mDisplayedIndex;
|
|
}
|
|
|
|
nsListControlFrame* lcf = static_cast<nsListControlFrame*>(mDropdownFrame);
|
|
return lcf->AddOption(aIndex);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::RemoveOption(int32_t aIndex)
|
|
{
|
|
nsWeakFrame weakThis(this);
|
|
if (mListControlFrame->GetNumberOfOptions() > 0) {
|
|
if (aIndex < mDisplayedIndex) {
|
|
--mDisplayedIndex;
|
|
} else if (aIndex == mDisplayedIndex) {
|
|
mDisplayedIndex = 0; // IE6 compat
|
|
RedisplayText(mDisplayedIndex);
|
|
}
|
|
}
|
|
else {
|
|
// If we removed the last option, we need to blank things out
|
|
RedisplayText(-1);
|
|
}
|
|
|
|
if (!weakThis.IsAlive())
|
|
return NS_OK;
|
|
|
|
nsListControlFrame* lcf = static_cast<nsListControlFrame*>(mDropdownFrame);
|
|
return lcf->RemoveOption(aIndex);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::OnSetSelectedIndex(int32_t aOldIndex, int32_t aNewIndex)
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
RedisplayText(aNewIndex);
|
|
NS_ASSERTION(mDropdownFrame, "No dropdown frame!");
|
|
|
|
nsISelectControlFrame* listFrame = do_QueryFrame(mDropdownFrame);
|
|
NS_ASSERTION(listFrame, "No list frame!");
|
|
|
|
return listFrame->OnSetSelectedIndex(aOldIndex, aNewIndex);
|
|
}
|
|
|
|
// End nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::HandleEvent(nsPresContext* aPresContext,
|
|
WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEventStatus);
|
|
|
|
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
|
|
return NS_OK;
|
|
}
|
|
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If we have style that affects how we are selected, feed event down to
|
|
// nsFrame::HandleEvent so that selection takes place when appropriate.
|
|
const nsStyleUserInterface* uiStyle = StyleUserInterface();
|
|
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
|
|
return nsBlockFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::SetFormProperty(nsIAtom* aName, const nsAString& aValue)
|
|
{
|
|
nsIFormControlFrame* fcFrame = do_QueryFrame(mDropdownFrame);
|
|
if (!fcFrame) {
|
|
return NS_NOINTERFACE;
|
|
}
|
|
|
|
return fcFrame->SetFormProperty(aName, aValue);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsComboboxControlFrame::GetContentInsertionFrame() {
|
|
return mInRedisplayText ? mDisplayFrame : mDropdownFrame->GetContentInsertionFrame();
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
|
|
{
|
|
// The frames used to display the combo box and the button used to popup the dropdown list
|
|
// are created through anonymous content. The dropdown list is not created through anonymous
|
|
// content because its frame is initialized specifically for the drop-down case and it is placed
|
|
// a special list referenced through NS_COMBO_FRAME_POPUP_LIST_INDEX to keep separate from the
|
|
// layout of the display and button.
|
|
//
|
|
// Note: The value attribute of the display content is set when an item is selected in the dropdown list.
|
|
// If the content specified below does not honor the value attribute than nothing will be displayed.
|
|
|
|
// For now the content that is created corresponds to two input buttons. It would be better to create the
|
|
// tag as something other than input, but then there isn't any way to create a button frame since it
|
|
// isn't possible to set the display type in CSS2 to create a button frame.
|
|
|
|
// create content used for display
|
|
//nsIAtom* tag = NS_NewAtom("mozcombodisplay");
|
|
|
|
// Add a child text content node for the label
|
|
|
|
nsNodeInfoManager *nimgr = mContent->NodeInfo()->NodeInfoManager();
|
|
|
|
mDisplayContent = new nsTextNode(nimgr);
|
|
|
|
// set the value of the text node
|
|
mDisplayedIndex = mListControlFrame->GetSelectedIndex();
|
|
if (mDisplayedIndex != -1) {
|
|
mListControlFrame->GetOptionText(mDisplayedIndex, mDisplayedOptionText);
|
|
}
|
|
ActuallyDisplayText(false);
|
|
|
|
if (!aElements.AppendElement(mDisplayContent))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
mButtonContent = mContent->OwnerDoc()->CreateHTMLElement(nsGkAtoms::button);
|
|
if (!mButtonContent)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// make someone to listen to the button. If its pressed by someone like Accessibility
|
|
// then open or close the combo box.
|
|
mButtonListener = new nsComboButtonListener(this);
|
|
mButtonContent->AddEventListener(NS_LITERAL_STRING("click"), mButtonListener,
|
|
false, false);
|
|
|
|
mButtonContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
|
|
NS_LITERAL_STRING("button"), false);
|
|
// Set tabindex="-1" so that the button is not tabbable
|
|
mButtonContent->SetAttr(kNameSpaceID_None, nsGkAtoms::tabindex,
|
|
NS_LITERAL_STRING("-1"), false);
|
|
|
|
if (!aElements.AppendElement(mButtonContent))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,
|
|
uint32_t aFilter)
|
|
{
|
|
aElements.MaybeAppendElement(mDisplayContent);
|
|
aElements.MaybeAppendElement(mButtonContent);
|
|
}
|
|
|
|
// XXXbz this is a for-now hack. Now that display:inline-block works,
|
|
// need to revisit this.
|
|
class nsComboboxDisplayFrame : public nsBlockFrame {
|
|
public:
|
|
NS_DECL_FRAMEARENA_HELPERS
|
|
|
|
nsComboboxDisplayFrame (nsStyleContext* aContext,
|
|
nsComboboxControlFrame* aComboBox)
|
|
: nsBlockFrame(aContext),
|
|
mComboBox(aComboBox)
|
|
{}
|
|
|
|
// Need this so that line layout knows that this block's width
|
|
// depends on the available width.
|
|
virtual nsIAtom* GetType() const MOZ_OVERRIDE;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
|
|
{
|
|
return nsBlockFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eReplacedContainsBlock));
|
|
}
|
|
|
|
virtual nsresult Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus) MOZ_OVERRIDE;
|
|
|
|
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists) MOZ_OVERRIDE;
|
|
|
|
protected:
|
|
nsComboboxControlFrame* mComboBox;
|
|
};
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsComboboxDisplayFrame)
|
|
|
|
nsIAtom*
|
|
nsComboboxDisplayFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::comboboxDisplayFrame;
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxDisplayFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsHTMLReflowState state(aReflowState);
|
|
if (state.ComputedHeight() == NS_INTRINSICSIZE) {
|
|
// Note that the only way we can have a computed height here is if the
|
|
// combobox had a specified height. If it didn't, size based on what our
|
|
// rows look like, for lack of anything better.
|
|
state.SetComputedHeight(mComboBox->mListControlFrame->GetHeightOfARow());
|
|
}
|
|
nscoord computedWidth = mComboBox->mDisplayWidth -
|
|
state.ComputedPhysicalBorderPadding().LeftRight();
|
|
if (computedWidth < 0) {
|
|
computedWidth = 0;
|
|
}
|
|
state.SetComputedWidth(computedWidth);
|
|
|
|
return nsBlockFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
}
|
|
|
|
void
|
|
nsComboboxDisplayFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsDisplayListCollection set;
|
|
nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, set);
|
|
|
|
// remove background items if parent frame is themed
|
|
if (mComboBox->IsThemed()) {
|
|
set.BorderBackground()->DeleteAll();
|
|
}
|
|
|
|
set.MoveTo(aLists);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsComboboxControlFrame::CreateFrameFor(nsIContent* aContent)
|
|
{
|
|
NS_PRECONDITION(nullptr != aContent, "null ptr");
|
|
|
|
NS_ASSERTION(mDisplayContent, "mDisplayContent can't be null!");
|
|
|
|
if (mDisplayContent != aContent) {
|
|
// We only handle the frames for mDisplayContent here
|
|
return nullptr;
|
|
}
|
|
|
|
// Get PresShell
|
|
nsIPresShell *shell = PresContext()->PresShell();
|
|
nsStyleSet *styleSet = shell->StyleSet();
|
|
|
|
// create the style contexts for the anonymous block frame and text frame
|
|
nsRefPtr<nsStyleContext> styleContext;
|
|
styleContext = styleSet->
|
|
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::mozDisplayComboboxControlFrame,
|
|
mStyleContext);
|
|
|
|
nsRefPtr<nsStyleContext> textStyleContext;
|
|
textStyleContext = styleSet->ResolveStyleForNonElement(mStyleContext);
|
|
|
|
// Start by creating our anonymous block frame
|
|
mDisplayFrame = new (shell) nsComboboxDisplayFrame(styleContext, this);
|
|
mDisplayFrame->Init(mContent, this, nullptr);
|
|
|
|
// Create a text frame and put it inside the block frame
|
|
nsIFrame* textFrame = NS_NewTextFrame(shell, textStyleContext);
|
|
|
|
// initialize the text frame
|
|
textFrame->Init(aContent, mDisplayFrame, nullptr);
|
|
mDisplayContent->SetPrimaryFrame(textFrame);
|
|
|
|
nsFrameList textList(textFrame, textFrame);
|
|
mDisplayFrame->SetInitialChildList(kPrincipalList, textList);
|
|
return mDisplayFrame;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
|
|
{
|
|
// Revoke any pending RedisplayTextEvent
|
|
mRedisplayTextEvent.Revoke();
|
|
|
|
nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
|
|
|
|
if (mDroppedDown) {
|
|
MOZ_ASSERT(mDropdownFrame, "mDroppedDown without frame");
|
|
nsView* view = mDropdownFrame->GetView();
|
|
MOZ_ASSERT(view);
|
|
nsIWidget* widget = view->GetWidget();
|
|
if (widget) {
|
|
widget->CaptureRollupEvents(this, false);
|
|
}
|
|
}
|
|
|
|
// Cleanup frames in popup child list
|
|
mPopupFrames.DestroyFramesFrom(aDestructRoot);
|
|
nsContentUtils::DestroyAnonymousContent(&mDisplayContent);
|
|
nsContentUtils::DestroyAnonymousContent(&mButtonContent);
|
|
nsBlockFrame::DestroyFrom(aDestructRoot);
|
|
}
|
|
|
|
const nsFrameList&
|
|
nsComboboxControlFrame::GetChildList(ChildListID aListID) const
|
|
{
|
|
if (kSelectPopupList == aListID) {
|
|
return mPopupFrames;
|
|
}
|
|
return nsBlockFrame::GetChildList(aListID);
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::GetChildLists(nsTArray<ChildList>* aLists) const
|
|
{
|
|
nsBlockFrame::GetChildLists(aLists);
|
|
mPopupFrames.AppendIfNonempty(aLists, kSelectPopupList);
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (kSelectPopupList == aListID) {
|
|
mPopupFrames.SetFrames(aChildList);
|
|
} else {
|
|
for (nsFrameList::Enumerator e(aChildList); !e.AtEnd(); e.Next()) {
|
|
nsCOMPtr<nsIFormControl> formControl =
|
|
do_QueryInterface(e.get()->GetContent());
|
|
if (formControl && formControl->GetType() == NS_FORM_BUTTON_BUTTON) {
|
|
mButtonFrame = e.get();
|
|
break;
|
|
}
|
|
}
|
|
NS_ASSERTION(mButtonFrame, "missing button frame in initial child list");
|
|
rv = nsBlockFrame::SetInitialChildList(aListID, aChildList);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
//nsIRollupListener
|
|
//----------------------------------------------------------------------
|
|
bool
|
|
nsComboboxControlFrame::Rollup(uint32_t aCount, const nsIntPoint* pos, nsIContent** aLastRolledUp)
|
|
{
|
|
if (!mDroppedDown)
|
|
return false;
|
|
|
|
nsWeakFrame weakFrame(this);
|
|
mListControlFrame->AboutToRollup(); // might destroy us
|
|
if (!weakFrame.IsAlive())
|
|
return true;
|
|
ShowDropDown(false); // might destroy us
|
|
if (weakFrame.IsAlive()) {
|
|
mListControlFrame->CaptureMouseEvents(false);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
nsIWidget*
|
|
nsComboboxControlFrame::GetRollupWidget()
|
|
{
|
|
nsView* view = mDropdownFrame->GetView();
|
|
MOZ_ASSERT(view);
|
|
return view->GetWidget();
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::RollupFromList()
|
|
{
|
|
if (ShowList(false))
|
|
mListControlFrame->CaptureMouseEvents(false);
|
|
}
|
|
|
|
int32_t
|
|
nsComboboxControlFrame::UpdateRecentIndex(int32_t aIndex)
|
|
{
|
|
int32_t index = mRecentSelectedIndex;
|
|
if (mRecentSelectedIndex == NS_SKIP_NOTIFY_INDEX || aIndex == NS_SKIP_NOTIFY_INDEX)
|
|
mRecentSelectedIndex = aIndex;
|
|
return index;
|
|
}
|
|
|
|
class nsDisplayComboboxFocus : public nsDisplayItem {
|
|
public:
|
|
nsDisplayComboboxFocus(nsDisplayListBuilder* aBuilder,
|
|
nsComboboxControlFrame* aFrame)
|
|
: nsDisplayItem(aBuilder, aFrame) {
|
|
MOZ_COUNT_CTOR(nsDisplayComboboxFocus);
|
|
}
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
virtual ~nsDisplayComboboxFocus() {
|
|
MOZ_COUNT_DTOR(nsDisplayComboboxFocus);
|
|
}
|
|
#endif
|
|
|
|
virtual void Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) MOZ_OVERRIDE;
|
|
NS_DISPLAY_DECL_NAME("ComboboxFocus", TYPE_COMBOBOX_FOCUS)
|
|
};
|
|
|
|
void nsDisplayComboboxFocus::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
static_cast<nsComboboxControlFrame*>(mFrame)
|
|
->PaintFocus(*aCtx, ToReferenceFrame());
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
#ifdef NOISY
|
|
printf("%p paint at (%d, %d, %d, %d)\n", this,
|
|
aDirtyRect.x, aDirtyRect.y, aDirtyRect.width, aDirtyRect.height);
|
|
#endif
|
|
|
|
if (aBuilder->IsForEventDelivery()) {
|
|
// Don't allow children to receive events.
|
|
// REVIEW: following old GetFrameForPoint
|
|
DisplayBorderBackgroundOutline(aBuilder, aLists);
|
|
} else {
|
|
// REVIEW: Our in-flow child frames are inline-level so they will paint in our
|
|
// content list, so we don't need to mess with layers.
|
|
nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
|
|
}
|
|
|
|
// draw a focus indicator only when focus rings should be drawn
|
|
nsIDocument* doc = mContent->GetCurrentDoc();
|
|
if (doc) {
|
|
nsPIDOMWindow* window = doc->GetWindow();
|
|
if (window && window->ShouldShowFocusRing()) {
|
|
nsPresContext *presContext = PresContext();
|
|
const nsStyleDisplay *disp = StyleDisplay();
|
|
if ((!IsThemed(disp) ||
|
|
!presContext->GetTheme()->ThemeDrawsFocusForWidget(disp->mAppearance)) &&
|
|
mDisplayFrame && IsVisibleForPainting(aBuilder)) {
|
|
aLists.Content()->AppendNewToTop(
|
|
new (aBuilder) nsDisplayComboboxFocus(aBuilder, this));
|
|
}
|
|
}
|
|
}
|
|
|
|
DisplaySelectionOverlay(aBuilder, aLists.Content());
|
|
}
|
|
|
|
void nsComboboxControlFrame::PaintFocus(nsRenderingContext& aRenderingContext,
|
|
nsPoint aPt)
|
|
{
|
|
/* Do we need to do anything? */
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED) || sFocused != this)
|
|
return;
|
|
|
|
aRenderingContext.PushState();
|
|
nsRect clipRect = mDisplayFrame->GetRect() + aPt;
|
|
aRenderingContext.IntersectClip(clipRect);
|
|
|
|
// REVIEW: Why does the old code paint mDisplayFrame again? We've
|
|
// already painted it in the children above. So clipping it here won't do
|
|
// us much good.
|
|
|
|
/////////////////////
|
|
// draw focus
|
|
|
|
aRenderingContext.SetLineStyle(nsLineStyle_kDotted);
|
|
aRenderingContext.SetColor(StyleColor()->mColor);
|
|
|
|
//aRenderingContext.DrawRect(clipRect);
|
|
|
|
nscoord onePixel = nsPresContext::CSSPixelsToAppUnits(1);
|
|
clipRect.width -= onePixel;
|
|
clipRect.height -= onePixel;
|
|
aRenderingContext.DrawLine(clipRect.TopLeft(), clipRect.TopRight());
|
|
aRenderingContext.DrawLine(clipRect.TopRight(), clipRect.BottomRight());
|
|
aRenderingContext.DrawLine(clipRect.BottomRight(), clipRect.BottomLeft());
|
|
aRenderingContext.DrawLine(clipRect.BottomLeft(), clipRect.TopLeft());
|
|
|
|
aRenderingContext.PopState();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// gets the content (an option) by index and then set it as
|
|
// being selected or not selected
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::OnOptionSelected(int32_t aIndex, bool aSelected)
|
|
{
|
|
if (mDroppedDown) {
|
|
nsISelectControlFrame *selectFrame = do_QueryFrame(mListControlFrame);
|
|
if (selectFrame) {
|
|
selectFrame->OnOptionSelected(aIndex, aSelected);
|
|
}
|
|
} else {
|
|
if (aSelected) {
|
|
nsAutoScriptBlocker blocker;
|
|
RedisplayText(aIndex);
|
|
} else {
|
|
nsWeakFrame weakFrame(this);
|
|
RedisplaySelectedText();
|
|
if (weakFrame.IsAlive()) {
|
|
FireValueChangeEvent(); // Fire after old option is unselected
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsComboboxControlFrame::FireValueChangeEvent()
|
|
{
|
|
// Fire ValueChange event to indicate data value of combo box has changed
|
|
nsContentUtils::AddScriptRunner(
|
|
new AsyncEventDispatcher(mContent, NS_LITERAL_STRING("ValueChange"), true,
|
|
false));
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::OnContentReset()
|
|
{
|
|
if (mListControlFrame) {
|
|
mListControlFrame->OnContentReset();
|
|
}
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------
|
|
// nsIStatefulFrame
|
|
//--------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::SaveState(nsPresState** aState)
|
|
{
|
|
if (!mListControlFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIStatefulFrame* stateful = do_QueryFrame(mListControlFrame);
|
|
return stateful->SaveState(aState);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::RestoreState(nsPresState* aState)
|
|
{
|
|
if (!mListControlFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIStatefulFrame* stateful = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(stateful, "Must implement nsIStatefulFrame");
|
|
return stateful->RestoreState(aState);
|
|
}
|
|
|
|
|
|
//
|
|
// Camino uses a native widget for the combobox
|
|
// popup, which affects drawing and event
|
|
// handling here and in nsListControlFrame.
|
|
//
|
|
// Also, Fennec use a custom combobox built-in widget
|
|
//
|
|
|
|
/* static */
|
|
bool
|
|
nsComboboxControlFrame::ToolkitHasNativePopup()
|
|
{
|
|
#ifdef MOZ_USE_NATIVE_POPUP_WINDOWS
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif /* MOZ_USE_NATIVE_POPUP_WINDOWS */
|
|
}
|
|
|