зеркало из https://github.com/mozilla/gecko-dev.git
1621 строка
51 KiB
C++
1621 строка
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 "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 "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 "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 "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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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*) 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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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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nsContainerFrame*
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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 MOZ_FINAL
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: public nsIReflowCallback, public nsRunnable
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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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MOZ_COUNT_CTOR(nsResizeDropdownAtFinalPosition);
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}
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protected:
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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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public:
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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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void
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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;
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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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WritingMode wm = mDropdownFrame->GetWritingMode();
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LogicalSize availSize = aReflowState.AvailableSize(wm);
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availSize.BSize(wm) = 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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ReflowChild(mDropdownFrame, aPresContext, desiredSize,
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kidReflowState, rect.x, rect.y, flags, 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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}
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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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Matrix transform;
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while (frame) {
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nsIFrame* parent;
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Matrix4x4 ctm = frame->GetTransformMatrix(nullptr, &parent);
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Matrix 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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// To get the translation introduced only by transforms we subtract the
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// regular non-transform translation.
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nsRootPresContext* rootPC = pc->GetRootPresContext();
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if (rootPC) {
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int32_t apd = pc->AppUnitsPerDevPixel();
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translation.x = NSFloatPixelsToAppUnits(transform._31, apd);
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translation.y = NSFloatPixelsToAppUnits(transform._32, apd);
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translation -= GetOffsetToCrossDoc(rootPC->PresShell()->GetRootFrame());
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}
|
|
}
|
|
return translation;
|
|
}
|
|
|
|
class nsAsyncRollup : public nsRunnable
|
|
{
|
|
public:
|
|
explicit 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:
|
|
explicit 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::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);
|
|
}
|
|
|
|
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_ISIZE) {
|
|
dropdownContentWidth = mDropdownFrame->GetMinISize(aRenderingContext);
|
|
if (isUsingOverlayScrollbars) {
|
|
dropdownContentWidth += scrollbarWidth;
|
|
}
|
|
} else {
|
|
NS_ASSERTION(aType == nsLayoutUtils::PREF_ISIZE, "Unexpected type");
|
|
dropdownContentWidth = mDropdownFrame->GetPrefISize(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()) &&
|
|
StyleDisplay()->mAppearance != NS_THEME_NONE) {
|
|
displayWidth += scrollbarWidth;
|
|
}
|
|
|
|
return displayWidth;
|
|
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetMinISize(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord minWidth;
|
|
DISPLAY_MIN_WIDTH(this, minWidth);
|
|
minWidth = GetIntrinsicISize(aRenderingContext, nsLayoutUtils::MIN_ISIZE);
|
|
return minWidth;
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord prefWidth;
|
|
DISPLAY_PREF_WIDTH(this, prefWidth);
|
|
prefWidth = GetIntrinsicISize(aRenderingContext, nsLayoutUtils::PREF_ISIZE);
|
|
return prefWidth;
|
|
}
|
|
|
|
void
|
|
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;
|
|
}
|
|
|
|
// 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()) ||
|
|
StyleDisplay()->mAppearance == NS_THEME_NONE) {
|
|
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;
|
|
|
|
nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// 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;
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------
|
|
|
|
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);
|
|
}
|
|
|
|
nsContainerFrame*
|
|
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(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 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 void 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;
|
|
}
|
|
|
|
void
|
|
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);
|
|
}
|
|
|
|
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, 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->GetComposedDoc();
|
|
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;
|
|
|
|
gfxContext* gfx = aRenderingContext.ThebesContext();
|
|
|
|
gfx->Save();
|
|
nsRect clipRect = mDisplayFrame->GetRect() + aPt;
|
|
gfx->Clip(NSRectToSnappedRect(clipRect,
|
|
PresContext()->AppUnitsPerDevPixel(),
|
|
*aRenderingContext.GetDrawTarget()));
|
|
|
|
// 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, PresContext()->AppUnitsPerDevPixel()));
|
|
StrokeSnappedEdgesOfRect(r, *aRenderingContext.GetDrawTarget(),
|
|
color, strokeOptions);
|
|
|
|
gfx->Restore();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// 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);
|
|
}
|
|
|
|
|
|
// 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 */
|
|
}
|
|
|