d7fc3956e1
This ensures that the pointer is always either null or a valid nsIContent after the call to Rollup returns, and avoids potentially leaving it as garbage. An alternative approach would be to make the call sites responsible for ensuring it is set to nullptr if the function returns false, but this seems safer. MozReview-Commit-ID: BXxPBgs6MZL
1724 lines
55 KiB
C++
1724 lines
55 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 "nsComboboxControlFrame.h"
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#include "gfxUtils.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/PathHelpers.h"
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#include "nsCOMPtr.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 "nsPresState.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 "nsIScrollableFrame.h"
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#include "nsListControlFrame.h"
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#include "mozilla/StyleSetHandle.h"
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#include "mozilla/StyleSetHandleInlines.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 "nsThemeConstants.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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#include "gfx2DGlue.h"
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#include "mozilla/widget/nsAutoRollup.h"
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#ifdef XP_WIN
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#define COMBOBOX_ROLLUP_CONSUME_EVENT 0
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#else
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#define COMBOBOX_ROLLUP_CONSUME_EVENT 1
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#endif
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using namespace mozilla;
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using namespace mozilla::gfx;
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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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private:
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virtual ~nsComboButtonListener() {}
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public:
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NS_DECL_ISUPPORTS
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NS_IMETHOD HandleEvent(nsIDOMEvent*) 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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explicit nsComboButtonListener(nsComboboxControlFrame* aCombobox)
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{
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mComboBox = aCombobox;
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}
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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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nsComboboxControlFrame*
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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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, mDisplayISize(0)
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, mRecentSelectedIndex(NS_SKIP_NOTIFY_INDEX)
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, mDisplayedIndex(-1)
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, mLastDropDownBeforeScreenBCoord(nscoord_MIN)
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, mLastDropDownAfterScreenBCoord(nscoord_MIN)
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, mDroppedDown(false)
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, mInRedisplayText(false)
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, mDelayedShowDropDown(false)
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, mIsOpenInParentProcess(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(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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AutoWeakFrame 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->FireOnInputAndOnChange();
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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 if it is safe to do so
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nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
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if (shell && nsContentUtils::IsSafeToRunScript()) {
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nsEventStatus status = nsEventStatus_eIgnore;
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WidgetMouseEvent event(true, aShowPopup ? eXULPopupShowing : eXULPopupHiding,
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nullptr, WidgetMouseEvent::eReal);
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shell->HandleDOMEventWithTarget(mContent, &event, &status);
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}
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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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AutoWeakFrame 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 final
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: public nsIReflowCallback, public Runnable
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{
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public:
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explicit nsResizeDropdownAtFinalPosition(nsComboboxControlFrame* aFrame)
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: mFrame(aFrame)
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{
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}
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protected:
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~nsResizeDropdownAtFinalPosition()
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{
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}
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public:
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virtual bool ReflowFinished() 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() override
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{
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NS_RELEASE_THIS();
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}
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NS_IMETHOD Run() override
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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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WeakFrame mFrame;
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};
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|
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void
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nsComboboxControlFrame::ReflowDropdown(nsPresContext* aPresContext,
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const ReflowInput& aReflowInput)
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|
{
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|
// All we want out of it later on, really, is the block size 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.
|
|
if (!aReflowInput.ShouldReflowAllKids() &&
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!NS_SUBTREE_DIRTY(mDropdownFrame)) {
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return;
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|
}
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|
|
|
// XXXbz this will, for small-block-size dropdowns, have extra space
|
|
// on the appropriate edge for the scrollbar we don't show... but
|
|
// that's the best we can do here for now.
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|
WritingMode wm = mDropdownFrame->GetWritingMode();
|
|
LogicalSize availSize = aReflowInput.AvailableSize(wm);
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|
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
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|
ReflowInput kidReflowInput(aPresContext, aReflowInput, mDropdownFrame,
|
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availSize);
|
|
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|
// If the dropdown's intrinsic inline size is narrower than our
|
|
// specified inline size, then expand it out. We want our border-box
|
|
// inline size to end up the same as the dropdown's so account for
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|
// both sets of mComputedBorderPadding.
|
|
nscoord forcedISize = aReflowInput.ComputedISize() +
|
|
aReflowInput.ComputedLogicalBorderPadding().IStartEnd(wm) -
|
|
kidReflowInput.ComputedLogicalBorderPadding().IStartEnd(wm);
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|
kidReflowInput.SetComputedISize(std::max(kidReflowInput.ComputedISize(),
|
|
forcedISize));
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|
|
|
// ensure we start off hidden
|
|
if (!mDroppedDown && GetStateBits() & NS_FRAME_FIRST_REFLOW) {
|
|
nsView* view = mDropdownFrame->GetView();
|
|
nsViewManager* viewManager = view->GetViewManager();
|
|
viewManager->SetViewVisibility(view, nsViewVisibility_kHide);
|
|
nsRect emptyRect(0, 0, 0, 0);
|
|
viewManager->ResizeView(view, emptyRect);
|
|
}
|
|
|
|
// Allow the child to move/size/change-visibility its view if it's currently
|
|
// dropped down
|
|
int32_t flags = mDroppedDown ? 0
|
|
: NS_FRAME_NO_MOVE_FRAME |
|
|
NS_FRAME_NO_VISIBILITY |
|
|
NS_FRAME_NO_SIZE_VIEW;
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|
|
|
//XXX Can this be different from the dropdown's writing mode?
|
|
// That would be odd!
|
|
// Note that we don't need to pass the true frame position or container size
|
|
// to ReflowChild or FinishReflowChild here; it will be positioned as needed
|
|
// by AbsolutelyPositionDropDown().
|
|
WritingMode outerWM = GetWritingMode();
|
|
const nsSize dummyContainerSize;
|
|
ReflowOutput desiredSize(aReflowInput);
|
|
nsReflowStatus ignoredStatus;
|
|
ReflowChild(mDropdownFrame, aPresContext, desiredSize,
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|
kidReflowInput, outerWM, LogicalPoint(outerWM),
|
|
dummyContainerSize, flags, ignoredStatus);
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|
|
|
// Set the child's width and height to its desired size
|
|
FinishReflowChild(mDropdownFrame, aPresContext, desiredSize, &kidReflowInput,
|
|
outerWM, LogicalPoint(outerWM), dummyContainerSize, flags);
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|
}
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|
|
|
nsPoint
|
|
nsComboboxControlFrame::GetCSSTransformTranslation()
|
|
{
|
|
nsIFrame* frame = this;
|
|
bool is3DTransform = false;
|
|
Matrix transform;
|
|
while (frame) {
|
|
nsIFrame* parent;
|
|
Matrix4x4 ctm = frame->GetTransformMatrix(nullptr, &parent);
|
|
Matrix matrix;
|
|
if (ctm.Is2D(&matrix)) {
|
|
transform = transform * matrix;
|
|
} else {
|
|
is3DTransform = true;
|
|
break;
|
|
}
|
|
frame = parent;
|
|
}
|
|
nsPoint translation;
|
|
if (!is3DTransform && !transform.HasNonTranslation()) {
|
|
nsPresContext* pc = PresContext();
|
|
// To get the translation introduced only by transforms we subtract the
|
|
// regular non-transform translation.
|
|
nsRootPresContext* rootPC = pc->GetRootPresContext();
|
|
if (rootPC) {
|
|
int32_t apd = pc->AppUnitsPerDevPixel();
|
|
translation.x = NSFloatPixelsToAppUnits(transform._31, apd);
|
|
translation.y = NSFloatPixelsToAppUnits(transform._32, apd);
|
|
translation -= GetOffsetToCrossDoc(rootPC->PresShell()->GetRootFrame());
|
|
}
|
|
}
|
|
return translation;
|
|
}
|
|
|
|
class nsAsyncRollup : public Runnable
|
|
{
|
|
public:
|
|
explicit nsAsyncRollup(nsComboboxControlFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHOD Run() override
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
static_cast<nsComboboxControlFrame*>(mFrame.GetFrame())
|
|
->RollupFromList();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
WeakFrame mFrame;
|
|
};
|
|
|
|
class nsAsyncResize : public Runnable
|
|
{
|
|
public:
|
|
explicit nsAsyncResize(nsComboboxControlFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHOD Run() override
|
|
{
|
|
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(FlushType::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;
|
|
}
|
|
WeakFrame mFrame;
|
|
};
|
|
|
|
void
|
|
nsComboboxControlFrame::GetAvailableDropdownSpace(WritingMode aWM,
|
|
nscoord* aBefore,
|
|
nscoord* aAfter,
|
|
LogicalPoint* aTranslation)
|
|
{
|
|
MOZ_ASSERT(!XRE_IsContentProcess());
|
|
// 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 list's bcoord
|
|
// location can change based on whether the dropdown is placed after
|
|
// or before 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.
|
|
// Use null container size when converting a vector from logical to physical.
|
|
const nsSize nullContainerSize;
|
|
*aTranslation = LogicalPoint(aWM, GetCSSTransformTranslation(),
|
|
nullContainerSize);
|
|
*aBefore = 0;
|
|
*aAfter = 0;
|
|
|
|
nsRect screen = nsFormControlFrame::GetUsableScreenRect(PresContext());
|
|
nsSize containerSize = screen.Size();
|
|
LogicalRect logicalScreen(aWM, screen, containerSize);
|
|
if (mLastDropDownAfterScreenBCoord == nscoord_MIN) {
|
|
LogicalRect thisScreenRect(aWM, GetScreenRectInAppUnits(),
|
|
containerSize);
|
|
mLastDropDownAfterScreenBCoord = thisScreenRect.BEnd(aWM) +
|
|
aTranslation->B(aWM);
|
|
mLastDropDownBeforeScreenBCoord = thisScreenRect.BStart(aWM) +
|
|
aTranslation->B(aWM);
|
|
}
|
|
|
|
nscoord minBCoord;
|
|
nsPresContext* pc = PresContext()->GetToplevelContentDocumentPresContext();
|
|
nsIFrame* root = pc ? pc->PresShell()->GetRootFrame() : nullptr;
|
|
if (root) {
|
|
minBCoord = LogicalRect(aWM,
|
|
root->GetScreenRectInAppUnits(),
|
|
containerSize).BStart(aWM);
|
|
if (mLastDropDownAfterScreenBCoord < minBCoord) {
|
|
// Don't allow the drop-down to be placed before the content area.
|
|
return;
|
|
}
|
|
} else {
|
|
minBCoord = logicalScreen.BStart(aWM);
|
|
}
|
|
|
|
nscoord after = logicalScreen.BEnd(aWM) - mLastDropDownAfterScreenBCoord;
|
|
nscoord before = mLastDropDownBeforeScreenBCoord - minBCoord;
|
|
|
|
// If the difference between the space before and after is less
|
|
// than a row-block-size, then we favor the space after.
|
|
if (before >= after) {
|
|
nsListControlFrame* lcf = static_cast<nsListControlFrame*>(mDropdownFrame);
|
|
nscoord rowBSize = lcf->GetBSizeOfARow();
|
|
if (before < after + rowBSize) {
|
|
before -= rowBSize;
|
|
}
|
|
}
|
|
|
|
*aAfter = after;
|
|
*aBefore = before;
|
|
}
|
|
|
|
nsComboboxControlFrame::DropDownPositionState
|
|
nsComboboxControlFrame::AbsolutelyPositionDropDown()
|
|
{
|
|
if (XRE_IsContentProcess()) {
|
|
return eDropDownPositionSuppressed;
|
|
}
|
|
|
|
WritingMode wm = GetWritingMode();
|
|
LogicalPoint translation(wm);
|
|
nscoord before, after;
|
|
mLastDropDownAfterScreenBCoord = nscoord_MIN;
|
|
GetAvailableDropdownSpace(wm, &before, &after, &translation);
|
|
if (before <= 0 && after <= 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;
|
|
}
|
|
|
|
LogicalSize dropdownSize = mDropdownFrame->GetLogicalSize(wm);
|
|
nscoord bSize = std::max(before, after);
|
|
nsListControlFrame* lcf = static_cast<nsListControlFrame*>(mDropdownFrame);
|
|
if (bSize < dropdownSize.BSize(wm)) {
|
|
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 (bSize > (dropdownSize.BSize(wm) + lcf->GetBSizeOfARow() * 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 after if there is room, otherwise place it before
|
|
// if there is room. If there is no room for it on either side then place
|
|
// it after (to avoid overlapping UI like the URL bar).
|
|
bool b = dropdownSize.BSize(wm)<= after || dropdownSize.BSize(wm) > before;
|
|
LogicalPoint dropdownPosition(wm, 0, b ? BSize(wm) : -dropdownSize.BSize(wm));
|
|
|
|
// Don't position the view unless the position changed since it might cause
|
|
// a call to NotifyGeometryChange() and an infinite loop here.
|
|
nsSize containerSize = GetSize();
|
|
const LogicalPoint currentPos =
|
|
mDropdownFrame->GetLogicalPosition(containerSize);
|
|
const LogicalPoint newPos = dropdownPosition + translation;
|
|
if (currentPos != newPos) {
|
|
mDropdownFrame->SetPosition(wm, newPos, containerSize);
|
|
nsContainerFrame::PositionFrameView(mDropdownFrame);
|
|
}
|
|
return eDropDownPositionFinal;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::NotifyGeometryChange()
|
|
{
|
|
if (XRE_IsContentProcess()) {
|
|
return;
|
|
}
|
|
|
|
// 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.
|
|
RefPtr<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::GetIntrinsicISize(nsRenderingContext* aRenderingContext,
|
|
nsLayoutUtils::IntrinsicISizeType 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, GetWritingMode());
|
|
}
|
|
|
|
nscoord displayISize = 0;
|
|
if (MOZ_LIKELY(mDisplayFrame)) {
|
|
displayISize = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
|
|
mDisplayFrame,
|
|
aType);
|
|
}
|
|
|
|
if (mDropdownFrame) {
|
|
nscoord dropdownContentISize;
|
|
bool isUsingOverlayScrollbars =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_UseOverlayScrollbars) != 0;
|
|
if (aType == nsLayoutUtils::MIN_ISIZE) {
|
|
dropdownContentISize = mDropdownFrame->GetMinISize(aRenderingContext);
|
|
if (isUsingOverlayScrollbars) {
|
|
dropdownContentISize += scrollbarWidth;
|
|
}
|
|
} else {
|
|
NS_ASSERTION(aType == nsLayoutUtils::PREF_ISIZE, "Unexpected type");
|
|
dropdownContentISize = mDropdownFrame->GetPrefISize(aRenderingContext);
|
|
if (isUsingOverlayScrollbars) {
|
|
dropdownContentISize += scrollbarWidth;
|
|
}
|
|
}
|
|
dropdownContentISize = NSCoordSaturatingSubtract(dropdownContentISize,
|
|
scrollbarWidth,
|
|
nscoord_MAX);
|
|
|
|
displayISize = std::max(dropdownContentISize, displayISize);
|
|
}
|
|
|
|
// add room for the dropmarker button if there is one
|
|
if ((!IsThemed() ||
|
|
presContext->GetTheme()->ThemeNeedsComboboxDropmarker()) &&
|
|
StyleDisplay()->mAppearance != NS_THEME_NONE) {
|
|
displayISize += scrollbarWidth;
|
|
}
|
|
|
|
return displayISize;
|
|
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetMinISize(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord minISize;
|
|
DISPLAY_MIN_WIDTH(this, minISize);
|
|
minISize = GetIntrinsicISize(aRenderingContext, nsLayoutUtils::MIN_ISIZE);
|
|
return minISize;
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord prefISize;
|
|
DISPLAY_PREF_WIDTH(this, prefISize);
|
|
prefISize = GetIntrinsicISize(aRenderingContext, nsLayoutUtils::PREF_ISIZE);
|
|
return prefISize;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
MarkInReflow();
|
|
// Constraints we try to satisfy:
|
|
|
|
// 1) Default inline size of button is the vertical scrollbar size
|
|
// 2) If the inline size of button is bigger than our inline size, set
|
|
// inline size of button to 0.
|
|
// 3) Default block size of button is block size of display area
|
|
// 4) Inline size of display area is whatever is left over from our
|
|
// inline size after allocating inline size for the button.
|
|
// 5) Block Size of display area is GetBSizeOfARow() on the
|
|
// mListControlFrame.
|
|
|
|
if (!mDisplayFrame || !mButtonFrame || !mDropdownFrame) {
|
|
NS_ERROR("Why did the frame constructor allow this to happen? Fix it!!");
|
|
return;
|
|
}
|
|
|
|
// 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, aReflowInput);
|
|
RefPtr<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 inline
|
|
// size of the dropdown button.
|
|
WritingMode wm = aReflowInput.GetWritingMode();
|
|
nscoord buttonISize;
|
|
const nsStyleDisplay *disp = StyleDisplay();
|
|
if ((IsThemed(disp) && !aPresContext->GetTheme()->ThemeNeedsComboboxDropmarker()) ||
|
|
StyleDisplay()->mAppearance == NS_THEME_NONE) {
|
|
buttonISize = 0;
|
|
}
|
|
else {
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(scrollable, "List must be a scrollable frame");
|
|
buttonISize = scrollable->GetNondisappearingScrollbarWidth(
|
|
PresContext(), aReflowInput.mRenderingContext, wm);
|
|
if (buttonISize > aReflowInput.ComputedISize()) {
|
|
buttonISize = 0;
|
|
}
|
|
}
|
|
|
|
mDisplayISize = aReflowInput.ComputedISize() - buttonISize;
|
|
|
|
nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);
|
|
|
|
// The button should occupy the same space as a scrollbar
|
|
nsSize containerSize = aDesiredSize.PhysicalSize();
|
|
LogicalRect buttonRect = mButtonFrame->GetLogicalRect(containerSize);
|
|
|
|
buttonRect.IStart(wm) =
|
|
aReflowInput.ComputedLogicalBorderPadding().IStartEnd(wm) +
|
|
mDisplayISize -
|
|
(aReflowInput.ComputedLogicalBorderPadding().IEnd(wm) -
|
|
aReflowInput.ComputedLogicalPadding().IEnd(wm));
|
|
buttonRect.ISize(wm) = buttonISize;
|
|
|
|
buttonRect.BStart(wm) = this->GetLogicalUsedBorder(wm).BStart(wm);
|
|
buttonRect.BSize(wm) = mDisplayFrame->BSize(wm) +
|
|
this->GetLogicalUsedPadding(wm).BStartEnd(wm);
|
|
|
|
mButtonFrame->SetRect(buttonRect, containerSize);
|
|
|
|
if (!aStatus.IsInlineBreakBefore() &&
|
|
!aStatus.IsFullyComplete()) {
|
|
// This frame didn't fit inside a fragmentation container. Splitting
|
|
// a nsComboboxControlFrame makes no sense, so we override the status here.
|
|
aStatus.Reset();
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------
|
|
|
|
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)
|
|
{
|
|
MOZ_ASSERT(!XRE_IsContentProcess());
|
|
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);
|
|
if (!sFocused && nsContentUtils::IsFocusedContent(GetContent())) {
|
|
sFocused = this;
|
|
nsListControlFrame::ComboboxFocusSet();
|
|
}
|
|
}
|
|
|
|
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!");
|
|
|
|
RefPtr<RedisplayTextEvent> event = new RedisplayTextEvent(this);
|
|
mRedisplayTextEvent = event;
|
|
nsContentUtils::AddScriptRunner(event);
|
|
}
|
|
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.
|
|
AutoWeakFrame weakThis(this);
|
|
PresContext()->Document()->
|
|
FlushPendingNotifications(FlushType::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-block-size 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)
|
|
{
|
|
AutoWeakFrame 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 COMBOBOX_ROLLUP_CONSUME_EVENT == 0
|
|
if (aEvent->mMessage == eMouseDown) {
|
|
if (GetContent() == mozilla::widget::nsAutoRollup::GetLastRollup()) {
|
|
// This event did a Rollup on this control - prevent it from opening
|
|
// the dropdown again!
|
|
*aEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// 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 == StyleUserInput::None ||
|
|
uiStyle->mUserInput == StyleUserInput::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);
|
|
}
|
|
|
|
nsContainerFrame*
|
|
nsComboboxControlFrame::GetContentInsertionFrame() {
|
|
return mInRedisplayText ? mDisplayFrame : mDropdownFrame->GetContentInsertionFrame();
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::DoUpdateStyleOfOwnedAnonBoxes(
|
|
ServoStyleSet& aStyleSet,
|
|
nsStyleChangeList& aChangeList,
|
|
nsChangeHint aHintForThisFrame)
|
|
{
|
|
UpdateStyleOfChildAnonBox(mDropdownFrame, aStyleSet, aChangeList,
|
|
aHintForThisFrame);
|
|
UpdateStyleOfChildAnonBox(mDisplayFrame, aStyleSet, aChangeList,
|
|
aHintForThisFrame);
|
|
}
|
|
|
|
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_Atomize("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);
|
|
|
|
WritingMode wm = GetWritingMode();
|
|
if (wm.IsVertical()) {
|
|
mButtonContent->SetAttr(kNameSpaceID_None, nsGkAtoms::orientation,
|
|
wm.IsVerticalRL() ? NS_LITERAL_STRING("left")
|
|
: NS_LITERAL_STRING("right"),
|
|
false);
|
|
}
|
|
|
|
if (!aElements.AppendElement(mButtonContent))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
|
|
uint32_t aFilter)
|
|
{
|
|
if (mDisplayContent) {
|
|
aElements.AppendElement(mDisplayContent);
|
|
}
|
|
|
|
if (mButtonContent) {
|
|
aElements.AppendElement(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 inline size
|
|
// depends on the available inline size.
|
|
virtual nsIAtom* GetType() const override;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const override
|
|
{
|
|
return nsBlockFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eReplacedContainsBlock));
|
|
}
|
|
|
|
virtual void Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus) override;
|
|
|
|
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists) override;
|
|
|
|
protected:
|
|
nsComboboxControlFrame* mComboBox;
|
|
};
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsComboboxDisplayFrame)
|
|
|
|
nsIAtom*
|
|
nsComboboxDisplayFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::comboboxDisplayFrame;
|
|
}
|
|
|
|
void
|
|
nsComboboxDisplayFrame::Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
ReflowInput state(aReflowInput);
|
|
if (state.ComputedBSize() == NS_INTRINSICSIZE) {
|
|
// Note that the only way we can have a computed block size here is
|
|
// if the combobox had a specified block size. If it didn't, size
|
|
// based on what our rows look like, for lack of anything better.
|
|
state.SetComputedBSize(mComboBox->mListControlFrame->GetBSizeOfARow());
|
|
}
|
|
WritingMode wm = aReflowInput.GetWritingMode();
|
|
nscoord computedISize = mComboBox->mDisplayISize -
|
|
state.ComputedLogicalBorderPadding().IStartEnd(wm);
|
|
if (computedISize < 0) {
|
|
computedISize = 0;
|
|
}
|
|
state.SetComputedISize(computedISize);
|
|
nsBlockFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
aStatus.Reset(); // this type of frame can't be split
|
|
}
|
|
|
|
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::CreateFrameForDisplayNode()
|
|
{
|
|
MOZ_ASSERT(mDisplayContent);
|
|
|
|
// Get PresShell
|
|
nsIPresShell *shell = PresContext()->PresShell();
|
|
StyleSetHandle styleSet = shell->StyleSet();
|
|
|
|
// create the style contexts for the anonymous block frame and text frame
|
|
RefPtr<nsStyleContext> styleContext;
|
|
styleContext = styleSet->
|
|
ResolveInheritingAnonymousBoxStyle(nsCSSAnonBoxes::mozDisplayComboboxControlFrame,
|
|
mStyleContext,
|
|
nsStyleSet::eSkipParentDisplayBasedStyleFixup);
|
|
|
|
RefPtr<nsStyleContext> textStyleContext;
|
|
textStyleContext =
|
|
styleSet->ResolveStyleForText(mDisplayContent, 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(mDisplayContent, mDisplayFrame, nullptr);
|
|
mDisplayContent->SetPrimaryFrame(textFrame);
|
|
|
|
nsFrameList textList(textFrame, textFrame);
|
|
mDisplayFrame->SetInitialChildList(kPrincipalList, textList);
|
|
return mDisplayFrame;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
|
|
{
|
|
if (sFocused == this) {
|
|
sFocused = nullptr;
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList)
|
|
{
|
|
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");
|
|
nsBlockFrame::SetInitialChildList(aListID, aChildList);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
//nsIRollupListener
|
|
//----------------------------------------------------------------------
|
|
bool
|
|
nsComboboxControlFrame::Rollup(uint32_t aCount, bool aFlush,
|
|
const nsIntPoint* pos, nsIContent** aLastRolledUp)
|
|
{
|
|
if (aLastRolledUp) {
|
|
*aLastRolledUp = nullptr;
|
|
}
|
|
|
|
if (!mDroppedDown) {
|
|
return false;
|
|
}
|
|
|
|
bool consume = !!COMBOBOX_ROLLUP_CONSUME_EVENT;
|
|
AutoWeakFrame weakFrame(this);
|
|
mListControlFrame->AboutToRollup(); // might destroy us
|
|
if (!weakFrame.IsAlive()) {
|
|
return consume;
|
|
}
|
|
ShowDropDown(false); // might destroy us
|
|
if (weakFrame.IsAlive()) {
|
|
mListControlFrame->CaptureMouseEvents(false);
|
|
}
|
|
|
|
if (aFlush && weakFrame.IsAlive()) {
|
|
// The popup's visibility doesn't update until the minimize animation has
|
|
// finished, so call UpdateWidgetGeometry to update it right away.
|
|
nsViewManager* viewManager = mDropdownFrame->GetView()->GetViewManager();
|
|
viewManager->UpdateWidgetGeometry(); // might destroy us
|
|
}
|
|
|
|
if (!weakFrame.IsAlive()) {
|
|
return consume;
|
|
}
|
|
|
|
if (aLastRolledUp) {
|
|
*aLastRolledUp = GetContent();
|
|
}
|
|
return consume;
|
|
}
|
|
|
|
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) override;
|
|
NS_DISPLAY_DECL_NAME("ComboboxFocus", TYPE_COMBOBOX_FOCUS)
|
|
};
|
|
|
|
void nsDisplayComboboxFocus::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
static_cast<nsComboboxControlFrame*>(mFrame)
|
|
->PaintFocus(*aCtx->GetDrawTarget(), 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->GetComposedDoc();
|
|
if (doc) {
|
|
nsPIDOMWindowOuter* 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(DrawTarget& aDrawTarget, nsPoint aPt)
|
|
{
|
|
/* Do we need to do anything? */
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED) || sFocused != this)
|
|
return;
|
|
|
|
int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel();
|
|
|
|
nsRect clipRect = mDisplayFrame->GetRect() + aPt;
|
|
aDrawTarget.PushClipRect(NSRectToSnappedRect(clipRect,
|
|
appUnitsPerDevPixel,
|
|
aDrawTarget));
|
|
|
|
// 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
|
|
|
|
StrokeOptions strokeOptions;
|
|
nsLayoutUtils::InitDashPattern(strokeOptions, NS_STYLE_BORDER_STYLE_DOTTED);
|
|
ColorPattern color(ToDeviceColor(StyleColor()->mColor));
|
|
nscoord onePixel = nsPresContext::CSSPixelsToAppUnits(1);
|
|
clipRect.width -= onePixel;
|
|
clipRect.height -= onePixel;
|
|
Rect r = ToRect(nsLayoutUtils::RectToGfxRect(clipRect, appUnitsPerDevPixel));
|
|
StrokeSnappedEdgesOfRect(r, aDrawTarget, color, strokeOptions);
|
|
|
|
aDrawTarget.PopClip();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// 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 {
|
|
AutoWeakFrame 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)
|
|
{
|
|
MOZ_ASSERT(!(*aState));
|
|
(*aState) = new nsPresState();
|
|
(*aState)->SetDroppedDown(mDroppedDown);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::RestoreState(nsPresState* aState)
|
|
{
|
|
if (!aState) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
ShowList(aState->GetDroppedDown()); // might destroy us
|
|
return NS_OK;
|
|
}
|
|
|
|
// Append a suffix so that the state key for the combobox is different
|
|
// from the state key the list control uses to sometimes save the scroll
|
|
// position for the same Element
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::GenerateStateKey(nsIContent* aContent,
|
|
nsIDocument* aDocument,
|
|
nsACString& aKey)
|
|
{
|
|
nsresult rv = nsContentUtils::GenerateStateKey(aContent, aDocument, aKey);
|
|
if (NS_FAILED(rv) || aKey.IsEmpty()) {
|
|
return rv;
|
|
}
|
|
aKey.Append("CCF");
|
|
return NS_OK;
|
|
}
|
|
|
|
// Fennec uses 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 */
|
|
}
|
|
|