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e368dc9c85
This patch was generated by a script. Here's the source of the script for
future reference:
function convert() {
echo "Converting $1 to $2..."
find . ! -wholename "*nsprpub*" \
! -wholename "*security/nss*" \
! -wholename "*/.hg*" \
! -wholename "obj-ff-dbg*" \
! -name nsXPCOMCID.h \
! -name prtypes.h \
-type f \
\( -iname "*.cpp" \
-o -iname "*.h" \
-o -iname "*.c" \
-o -iname "*.cc" \
-o -iname "*.idl" \
-o -iname "*.ipdl" \
-o -iname "*.ipdlh" \
-o -iname "*.mm" \) | \
xargs -n 1 sed -i -e "s/\b$1\b/$2/g"
}
convert PRInt8 int8_t
convert PRUint8 uint8_t
convert PRInt16 int16_t
convert PRUint16 uint16_t
convert PRInt32 int32_t
convert PRUint32 uint32_t
convert PRInt64 int64_t
convert PRUint64 uint64_t
convert PRIntn int
convert PRUintn unsigned
convert PRSize size_t
convert PROffset32 int32_t
convert PROffset64 int64_t
convert PRPtrdiff ptrdiff_t
convert PRFloat64 double
1743 lines
54 KiB
C++
1743 lines
54 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCOMPtr.h"
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#include "nsReadableUtils.h"
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#include "nsComboboxControlFrame.h"
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#include "nsIDOMEventTarget.h"
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#include "nsFrameManager.h"
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#include "nsFormControlFrame.h"
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#include "nsGfxButtonControlFrame.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 "nsINameSpaceManager.h"
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#include "nsIDOMElement.h"
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#include "nsIListControlFrame.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsIDOMHTMLSelectElement.h"
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#include "nsIDOMHTMLOptionElement.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 "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsEventDispatcher.h"
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#include "nsEventListenerManager.h"
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#include "nsIDOMNode.h"
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#include "nsISelectControlFrame.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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#include "nsContentUtils.h"
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#include "nsTextFragment.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsIDocument.h"
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#include "nsINodeInfo.h"
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#include "nsIScrollableFrame.h"
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#include "nsListControlFrame.h"
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#include "nsContentCID.h"
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#endif
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#include "nsIServiceManager.h"
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#include "nsGUIEvent.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 "nsAsyncDOMEvent.h"
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#include "nsRenderingContext.h"
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#include "mozilla/Preferences.h"
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using namespace mozilla;
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NS_IMETHODIMP
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nsComboboxControlFrame::RedisplayTextEvent::Run()
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{
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if (mControlFrame)
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mControlFrame->HandleRedisplayTextEvent();
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return NS_OK;
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}
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class nsPresState;
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#define FIX_FOR_BUG_53259
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// Drop down list event management.
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// The combo box uses the following strategy for managing the drop-down list.
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// If the combo box or it's arrow button is clicked on the drop-down list is displayed
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// If mouse exit's 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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//XXX: This is temporary. It simulates pseudo states by using a attribute selector on
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const int32_t kSizeNotSet = -1;
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/**
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* Helper class that listens to the combo boxes button. If the button is pressed the
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* combo box is toggled to open or close. this is used by Accessibility which presses
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* that button Programmatically.
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*/
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class nsComboButtonListener : public nsIDOMEventListener
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{
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public:
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NS_DECL_ISUPPORTS
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NS_IMETHOD HandleEvent(nsIDOMEvent*)
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{
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mComboBox->ShowDropDown(!mComboBox->IsDroppedDown());
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return NS_OK;
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}
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nsComboButtonListener(nsComboboxControlFrame* aCombobox)
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{
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mComboBox = aCombobox;
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}
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virtual ~nsComboButtonListener() {}
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nsComboboxControlFrame* mComboBox;
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};
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NS_IMPL_ISUPPORTS1(nsComboButtonListener,
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nsIDOMEventListener)
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// static class data member for Bug 32920
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nsComboboxControlFrame* nsComboboxControlFrame::sFocused = nullptr;
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nsIFrame*
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NS_NewComboboxControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext, uint32_t 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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namespace {
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class DestroyWidgetRunnable : public nsRunnable {
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public:
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NS_DECL_NSIRUNNABLE
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explicit DestroyWidgetRunnable(nsIContent* aCombobox) :
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mCombobox(aCombobox),
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mWidget(GetWidget())
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{
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}
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private:
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nsIWidget* GetWidget(nsIView** aOutView = nullptr) const;
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private:
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nsCOMPtr<nsIContent> mCombobox;
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nsIWidget* mWidget;
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};
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NS_IMETHODIMP DestroyWidgetRunnable::Run()
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{
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nsIView* view = nullptr;
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nsIWidget* currentWidget = GetWidget(&view);
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// Make sure that we are destroying the same widget as what was requested
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// when the event was fired.
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if (view && mWidget && mWidget == currentWidget) {
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view->DestroyWidget();
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}
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return NS_OK;
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}
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nsIWidget* DestroyWidgetRunnable::GetWidget(nsIView** aOutView) const
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{
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nsIFrame* primaryFrame = mCombobox->GetPrimaryFrame();
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nsIComboboxControlFrame* comboboxFrame = do_QueryFrame(primaryFrame);
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if (comboboxFrame) {
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nsIFrame* dropdown = comboboxFrame->GetDropDown();
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if (dropdown) {
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nsIView* view = dropdown->GetView();
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NS_ASSERTION(view, "nsComboboxControlFrame view is null");
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if (aOutView) {
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*aOutView = view;
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}
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if (view) {
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return view->GetWidget();
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}
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}
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}
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return nullptr;
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}
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}
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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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, 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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already_AddRefed<Accessible>
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nsComboboxControlFrame::CreateAccessible()
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{
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nsAccessibilityService* accService = nsIPresShell::AccService();
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if (accService) {
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return accService->CreateHTMLComboboxAccessible(mContent,
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PresContext()->PresShell());
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}
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return nullptr;
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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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Invalidate(nsRect(0,0,mRect.width,mRect.height));
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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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nsIView* view = mDropdownFrame->GetView();
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nsIViewManager* 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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nsMouseEvent event(true, aShowPopup ?
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NS_XUL_POPUP_SHOWING : NS_XUL_POPUP_HIDING, nullptr,
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nsMouseEvent::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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nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
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nsWeakFrame weakFrame(this);
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|
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if (aShowList) {
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nsIView* view = mDropdownFrame->GetView();
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NS_ASSERTION(!view->HasWidget(),
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"We shoudldn'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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}
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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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|
|
mDroppedDown = aShowList;
|
|
if (mDroppedDown) {
|
|
// The listcontrol frame will call back to the nsComboboxControlFrame's
|
|
// ListWasSelected which will stop the capture.
|
|
mListControlFrame->AboutToDropDown();
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mListControlFrame->CaptureMouseEvents(true);
|
|
}
|
|
|
|
// XXXbz so why do we need to flush here, exactly?
|
|
shell->GetDocument()->FlushPendingNotifications(Flush_Layout);
|
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if (!weakFrame.IsAlive()) {
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|
return false;
|
|
}
|
|
|
|
nsIFrame* listFrame = do_QueryFrame(mListControlFrame);
|
|
if (listFrame) {
|
|
nsIView* view = listFrame->GetView();
|
|
NS_ASSERTION(view, "nsComboboxControlFrame view is null");
|
|
if (view) {
|
|
nsIWidget* widget = view->GetWidget();
|
|
if (widget) {
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|
widget->CaptureRollupEvents(this, mDroppedDown, mDroppedDown);
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|
|
|
if (!aShowList) {
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|
nsCOMPtr<nsIRunnable> widgetDestroyer =
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|
new DestroyWidgetRunnable(GetContent());
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|
NS_DispatchToMainThread(widgetDestroyer);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return weakFrame.IsAlive();
|
|
}
|
|
|
|
class nsResizeDropdownAtFinalPosition
|
|
: public nsIReflowCallback, public nsRunnable
|
|
{
|
|
public:
|
|
nsResizeDropdownAtFinalPosition(nsComboboxControlFrame* aFrame)
|
|
: mFrame(aFrame)
|
|
{
|
|
MOZ_COUNT_CTOR(nsResizeDropdownAtFinalPosition);
|
|
}
|
|
~nsResizeDropdownAtFinalPosition()
|
|
{
|
|
MOZ_COUNT_DTOR(nsResizeDropdownAtFinalPosition);
|
|
}
|
|
|
|
virtual bool ReflowFinished()
|
|
{
|
|
Run();
|
|
NS_RELEASE_THIS();
|
|
return false;
|
|
}
|
|
|
|
virtual void ReflowCallbackCanceled()
|
|
{
|
|
NS_RELEASE_THIS();
|
|
}
|
|
|
|
NS_IMETHODIMP Run()
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
static_cast<nsComboboxControlFrame*>(mFrame.GetFrame())->
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AbsolutelyPositionDropDown();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsWeakFrame mFrame;
|
|
};
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::ReflowDropdown(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState)
|
|
{
|
|
// All we want out of it later on, really, is the height of a row, so we
|
|
// don't even need to cache mDropdownFrame's ascent or anything. If we don't
|
|
// need to reflow it, just bail out here.
|
|
if (!aReflowState.ShouldReflowAllKids() &&
|
|
!NS_SUBTREE_DIRTY(mDropdownFrame)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXXbz this will, for small-height dropdowns, have extra space on the right
|
|
// edge for the scrollbar we don't show... but that's the best we can do here
|
|
// for now.
|
|
nsSize availSize(aReflowState.availableWidth, NS_UNCONSTRAINEDSIZE);
|
|
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, mDropdownFrame,
|
|
availSize);
|
|
|
|
// If the dropdown's intrinsic width is narrower than our specified width,
|
|
// then expand it out. We want our border-box width to end up the same as
|
|
// the dropdown's so account for both sets of mComputedBorderPadding.
|
|
nscoord forcedWidth = aReflowState.ComputedWidth() +
|
|
aReflowState.mComputedBorderPadding.LeftRight() -
|
|
kidReflowState.mComputedBorderPadding.LeftRight();
|
|
kidReflowState.SetComputedWidth(NS_MAX(kidReflowState.ComputedWidth(),
|
|
forcedWidth));
|
|
|
|
// ensure we start off hidden
|
|
if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
|
|
nsIView* view = mDropdownFrame->GetView();
|
|
nsIViewManager* 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 = NS_FRAME_NO_MOVE_FRAME | NS_FRAME_NO_VISIBILITY | NS_FRAME_NO_SIZE_VIEW;
|
|
if (mDroppedDown) {
|
|
flags = 0;
|
|
}
|
|
nsRect rect = mDropdownFrame->GetRect();
|
|
nsHTMLReflowMetrics desiredSize;
|
|
nsReflowStatus ignoredStatus;
|
|
nsresult rv = ReflowChild(mDropdownFrame, aPresContext, desiredSize,
|
|
kidReflowState, rect.x, rect.y, flags,
|
|
ignoredStatus);
|
|
|
|
// Set the child's width and height to it's desired size
|
|
FinishReflowChild(mDropdownFrame, aPresContext, &kidReflowState,
|
|
desiredSize, rect.x, rect.y, flags);
|
|
return rv;
|
|
}
|
|
|
|
nsPoint
|
|
nsComboboxControlFrame::GetCSSTransformTranslation()
|
|
{
|
|
nsIFrame* frame = this;
|
|
bool is3DTransform = false;
|
|
gfxMatrix transform;
|
|
while (frame) {
|
|
nsIFrame* parent;
|
|
gfx3DMatrix ctm = frame->GetTransformMatrix(nullptr, &parent);
|
|
gfxMatrix matrix;
|
|
if (ctm.Is2D(&matrix)) {
|
|
transform = transform * matrix;
|
|
} else {
|
|
is3DTransform = true;
|
|
break;
|
|
}
|
|
frame = parent;
|
|
}
|
|
nsPoint translation;
|
|
if (!is3DTransform && !transform.HasNonTranslation()) {
|
|
nsPresContext* pc = PresContext();
|
|
gfxPoint pixelTranslation = transform.GetTranslation();
|
|
int32_t apd = pc->AppUnitsPerDevPixel();
|
|
translation.x = NSFloatPixelsToAppUnits(float(pixelTranslation.x), apd);
|
|
translation.y = NSFloatPixelsToAppUnits(float(pixelTranslation.y), apd);
|
|
// To get the translation introduced only by transforms we subtract the
|
|
// regular non-transform translation.
|
|
nsRootPresContext* rootPC = pc->GetRootPresContext();
|
|
if (rootPC) {
|
|
translation -= GetOffsetToCrossDoc(rootPC->PresShell()->GetRootFrame());
|
|
} else {
|
|
translation.x = translation.y = 0;
|
|
}
|
|
}
|
|
return translation;
|
|
}
|
|
|
|
class nsAsyncRollup : public nsRunnable
|
|
{
|
|
public:
|
|
nsAsyncRollup(nsComboboxControlFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHODIMP Run()
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
static_cast<nsComboboxControlFrame*>(mFrame.GetFrame())
|
|
->RollupFromList();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
nsWeakFrame mFrame;
|
|
};
|
|
|
|
class nsAsyncResize : public nsRunnable
|
|
{
|
|
public:
|
|
nsAsyncResize(nsComboboxControlFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHODIMP Run()
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
nsComboboxControlFrame* combo =
|
|
static_cast<nsComboboxControlFrame*>(mFrame.GetFrame());
|
|
static_cast<nsListControlFrame*>(combo->mDropdownFrame)->
|
|
SetSuppressScrollbarUpdate(true);
|
|
nsCOMPtr<nsIPresShell> shell = mFrame->PresContext()->PresShell();
|
|
shell->FrameNeedsReflow(combo->mDropdownFrame, nsIPresShell::eResize,
|
|
NS_FRAME_IS_DIRTY);
|
|
shell->FlushPendingNotifications(Flush_Layout);
|
|
if (mFrame.IsAlive()) {
|
|
combo = static_cast<nsComboboxControlFrame*>(mFrame.GetFrame());
|
|
static_cast<nsListControlFrame*>(combo->mDropdownFrame)->
|
|
SetSuppressScrollbarUpdate(false);
|
|
if (combo->mDelayedShowDropDown) {
|
|
combo->ShowDropDown(true);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
nsWeakFrame mFrame;
|
|
};
|
|
|
|
void
|
|
nsComboboxControlFrame::GetAvailableDropdownSpace(nscoord* aAbove,
|
|
nscoord* aBelow,
|
|
nsPoint* aTranslation)
|
|
{
|
|
// Note: At first glance, it appears that you could simply get the absolute
|
|
// bounding box for the dropdown list by first getting its view, then getting
|
|
// the view's nsIWidget, then asking the nsIWidget for its AbsoluteBounds.
|
|
// The problem with this approach, is that the dropdown lists y location can
|
|
// change based on whether the dropdown is placed below or above the display
|
|
// frame. The approach, taken here is to get the absolute position of the
|
|
// display frame and use its location to determine if the dropdown will go
|
|
// offscreen.
|
|
|
|
// Normal frame geometry (eg GetOffsetTo, mRect) doesn't include transforms.
|
|
// In the special case that our transform is only a 2D translation we
|
|
// introduce this hack so that the dropdown will show up in the right place.
|
|
*aTranslation = GetCSSTransformTranslation();
|
|
*aAbove = 0;
|
|
*aBelow = 0;
|
|
|
|
nsRect thisScreenRect = GetScreenRectInAppUnits();
|
|
nsRect screen = nsFormControlFrame::GetUsableScreenRect(PresContext());
|
|
nscoord dropdownY = thisScreenRect.YMost() + aTranslation->y;
|
|
|
|
nscoord minY;
|
|
if (!PresContext()->IsChrome()) {
|
|
nsIFrame* root = PresContext()->PresShell()->GetRootFrame();
|
|
minY = root->GetScreenRectInAppUnits().y;
|
|
if (dropdownY < root->GetScreenRectInAppUnits().y) {
|
|
// Don't allow the drop-down to be placed above the top of the root frame.
|
|
return;
|
|
}
|
|
} else {
|
|
minY = screen.y;
|
|
}
|
|
|
|
nscoord below = screen.YMost() - dropdownY;
|
|
nscoord above = thisScreenRect.y + aTranslation->y - 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;
|
|
GetAvailableDropdownSpace(&above, &below, &translation);
|
|
if (above <= 0 && below <= 0) {
|
|
// Hide the view immediately to minimize flicker.
|
|
nsIView* view = mDropdownFrame->GetView();
|
|
view->GetViewManager()->SetViewVisibility(view, nsViewVisibility_kHide);
|
|
NS_DispatchToCurrentThread(new nsAsyncRollup(this));
|
|
return eDropDownPositionSuppressed;
|
|
}
|
|
|
|
nsSize dropdownSize = mDropdownFrame->GetSize();
|
|
nscoord height = NS_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
|
|
// on the side that has more room.
|
|
bool b = dropdownSize.height <= below || below >= above;
|
|
nsPoint dropdownPosition(0, b ? GetRect().height : -dropdownSize.height);
|
|
if (GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
|
|
// Align the right edge of the drop-down with the right edge of the control.
|
|
dropdownPosition.x = GetRect().width - dropdownSize.width;
|
|
}
|
|
|
|
// Don't position the view unless the position changed since it might cause
|
|
// a call to NotifyGeometryChange() and an infinite loop here.
|
|
const nsPoint currentPos = mDropdownFrame->GetPosition();
|
|
const nsPoint newPos = dropdownPosition + translation;
|
|
if (currentPos != newPos) {
|
|
mDropdownFrame->SetPosition(newPos);
|
|
nsContainerFrame::PositionFrameView(mDropdownFrame);
|
|
}
|
|
return eDropDownPositionFinal;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::NotifyGeometryChange()
|
|
{
|
|
// We don't need to resize if we're not dropped down since ShowDropDown
|
|
// does that, or if we're dirty then the reflow callback does it,
|
|
// or if we have a delayed ShowDropDown pending.
|
|
if (IsDroppedDown() &&
|
|
!(GetStateBits() & NS_FRAME_IS_DIRTY) &&
|
|
!mDelayedShowDropDown) {
|
|
// Async because we're likely in a middle of a scroll here so
|
|
// frame/view positions are in flux.
|
|
nsRefPtr<nsResizeDropdownAtFinalPosition> resize =
|
|
new nsResizeDropdownAtFinalPosition(this);
|
|
NS_DispatchToCurrentThread(resize);
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------
|
|
//
|
|
//----------------------------------------------------------
|
|
#ifdef DO_REFLOW_DEBUG
|
|
static int myCounter = 0;
|
|
|
|
static void printSize(char * aDesc, nscoord aSize)
|
|
{
|
|
printf(" %s: ", aDesc);
|
|
if (aSize == NS_UNCONSTRAINEDSIZE) {
|
|
printf("UC");
|
|
} else {
|
|
printf("%d", PX(aSize));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//-------------------------------------------------------------------
|
|
//-- Main Reflow for the Combobox
|
|
//-------------------------------------------------------------------
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetIntrinsicWidth(nsRenderingContext* aRenderingContext,
|
|
nsLayoutUtils::IntrinsicWidthType aType)
|
|
{
|
|
// get the scrollbar width, we'll use this later
|
|
nscoord scrollbarWidth = 0;
|
|
nsPresContext* presContext = PresContext();
|
|
if (mListControlFrame) {
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(scrollable, "List must be a scrollable frame");
|
|
scrollbarWidth =
|
|
scrollable->GetDesiredScrollbarSizes(presContext, aRenderingContext).LeftRight();
|
|
}
|
|
|
|
nscoord displayWidth = 0;
|
|
if (NS_LIKELY(mDisplayFrame)) {
|
|
displayWidth = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
|
|
mDisplayFrame,
|
|
aType);
|
|
}
|
|
|
|
if (mDropdownFrame) {
|
|
nscoord dropdownContentWidth;
|
|
if (aType == nsLayoutUtils::MIN_WIDTH) {
|
|
dropdownContentWidth = mDropdownFrame->GetMinWidth(aRenderingContext);
|
|
} else {
|
|
NS_ASSERTION(aType == nsLayoutUtils::PREF_WIDTH, "Unexpected type");
|
|
dropdownContentWidth = mDropdownFrame->GetPrefWidth(aRenderingContext);
|
|
}
|
|
dropdownContentWidth = NSCoordSaturatingSubtract(dropdownContentWidth,
|
|
scrollbarWidth,
|
|
nscoord_MAX);
|
|
|
|
displayWidth = NS_MAX(dropdownContentWidth, displayWidth);
|
|
}
|
|
|
|
// add room for the dropmarker button if there is one
|
|
if (!IsThemed() || presContext->GetTheme()->ThemeNeedsComboboxDropmarker())
|
|
displayWidth += scrollbarWidth;
|
|
|
|
return displayWidth;
|
|
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord minWidth;
|
|
DISPLAY_MIN_WIDTH(this, minWidth);
|
|
minWidth = GetIntrinsicWidth(aRenderingContext, nsLayoutUtils::MIN_WIDTH);
|
|
return minWidth;
|
|
}
|
|
|
|
nscoord
|
|
nsComboboxControlFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord prefWidth;
|
|
DISPLAY_PREF_WIDTH(this, prefWidth);
|
|
prefWidth = GetIntrinsicWidth(aRenderingContext, nsLayoutUtils::PREF_WIDTH);
|
|
return prefWidth;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
// Constraints we try to satisfy:
|
|
|
|
// 1) Default width of button is the vertical scrollbar size
|
|
// 2) If the width of button is bigger than our width, set width of
|
|
// button to 0.
|
|
// 3) Default height of button is height of display area
|
|
// 4) Width of display area is whatever is left over from our width after
|
|
// allocating width for the button.
|
|
// 5) Height of display area is GetHeightOfARow() on the
|
|
// mListControlFrame.
|
|
|
|
if (!mDisplayFrame || !mButtonFrame || !mDropdownFrame) {
|
|
NS_ERROR("Why did the frame constructor allow this to happen? Fix it!!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
// Make sure the displayed text is the same as the selected option, bug 297389.
|
|
int32_t selectedIndex;
|
|
nsAutoString selectedOptionText;
|
|
if (!mDroppedDown) {
|
|
selectedIndex = mListControlFrame->GetSelectedIndex();
|
|
}
|
|
else {
|
|
// In dropped down mode the "selected index" is the hovered menu item,
|
|
// we want the last selected item which is |mDisplayedIndex| in this case.
|
|
selectedIndex = mDisplayedIndex;
|
|
}
|
|
if (selectedIndex != -1) {
|
|
mListControlFrame->GetOptionText(selectedIndex, selectedOptionText);
|
|
}
|
|
if (mDisplayedOptionText != selectedOptionText) {
|
|
RedisplayText(selectedIndex);
|
|
}
|
|
|
|
// First reflow our dropdown so that we know how tall we should be.
|
|
ReflowDropdown(aPresContext, aReflowState);
|
|
nsRefPtr<nsResizeDropdownAtFinalPosition> resize =
|
|
new nsResizeDropdownAtFinalPosition(this);
|
|
if (NS_SUCCEEDED(aPresContext->PresShell()->PostReflowCallback(resize))) {
|
|
// The reflow callback queue doesn't AddRef so we keep it alive until
|
|
// it's released in its ReflowFinished / ReflowCallbackCanceled.
|
|
resize.forget();
|
|
}
|
|
|
|
// Get the width of the vertical scrollbar. That will be the width of the
|
|
// dropdown button.
|
|
nscoord buttonWidth;
|
|
const nsStyleDisplay *disp = GetStyleDisplay();
|
|
if (IsThemed(disp) && !aPresContext->GetTheme()->ThemeNeedsComboboxDropmarker()) {
|
|
buttonWidth = 0;
|
|
}
|
|
else {
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(scrollable, "List must be a scrollable frame");
|
|
buttonWidth =
|
|
scrollable->GetDesiredScrollbarSizes(PresContext(),
|
|
aReflowState.rendContext).LeftRight();
|
|
if (buttonWidth > aReflowState.ComputedWidth()) {
|
|
buttonWidth = 0;
|
|
}
|
|
}
|
|
|
|
mDisplayWidth = aReflowState.ComputedWidth() - buttonWidth;
|
|
|
|
nsresult rv = nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
|
|
aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Now set the correct width and height on our button. The width we need to
|
|
// set always, the height only if we had an auto height.
|
|
nsRect buttonRect = mButtonFrame->GetRect();
|
|
// If we have a non-intrinsic computed height, our kids should have sized
|
|
// themselves properly on their own.
|
|
if (aReflowState.ComputedHeight() == NS_INTRINSICSIZE) {
|
|
// The display frame is going to be the right height and width at this
|
|
// point. Use its height as the button height.
|
|
nsRect displayRect = mDisplayFrame->GetRect();
|
|
buttonRect.height = displayRect.height;
|
|
buttonRect.y = displayRect.y;
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
nscoord buttonHeight = mButtonFrame->GetSize().height;
|
|
nscoord displayHeight = mDisplayFrame->GetSize().height;
|
|
|
|
// The button and display area should be equal heights, unless the computed
|
|
// height on the combobox is too small to fit their borders and padding.
|
|
NS_ASSERTION(buttonHeight == displayHeight ||
|
|
(aReflowState.ComputedHeight() < buttonHeight &&
|
|
buttonHeight ==
|
|
mButtonFrame->GetUsedBorderAndPadding().TopBottom()) ||
|
|
(aReflowState.ComputedHeight() < displayHeight &&
|
|
displayHeight ==
|
|
mDisplayFrame->GetUsedBorderAndPadding().TopBottom()),
|
|
"Different heights?");
|
|
}
|
|
#endif
|
|
|
|
if (GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
|
|
// Make sure the right edge of the button frame stays where it is now
|
|
buttonRect.x -= buttonWidth - buttonRect.width;
|
|
}
|
|
buttonRect.width = buttonWidth;
|
|
mButtonFrame->SetRect(buttonRect);
|
|
|
|
return rv;
|
|
}
|
|
|
|
//--------------------------------------------------------------
|
|
|
|
nsIAtom*
|
|
nsComboboxControlFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::comboboxControlFrame;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("ComboboxControl"), aResult);
|
|
}
|
|
#endif
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIComboboxControlFrame
|
|
//----------------------------------------------------------------------
|
|
void
|
|
nsComboboxControlFrame::ShowDropDown(bool aDoDropDown)
|
|
{
|
|
mDelayedShowDropDown = false;
|
|
nsEventStates eventStates = mContent->AsElement()->State();
|
|
if (aDoDropDown && eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return;
|
|
}
|
|
|
|
if (!mDroppedDown && aDoDropDown) {
|
|
if (sFocused == this) {
|
|
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 PRUnichar 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
|
|
//----------------------------------------------------------------------
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::HandleEvent(nsPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aEventStatus);
|
|
|
|
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsEventStates 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 = GetStyleUserInterface();
|
|
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);
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
|
|
{
|
|
nsIFormControlFrame* fcFrame = do_QueryFrame(mDropdownFrame);
|
|
if (!fcFrame) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return fcFrame->GetFormProperty(aName, aValue);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsComboboxControlFrame::GetContentInsertionFrame() {
|
|
return mInRedisplayText ? mDisplayFrame : mDropdownFrame->GetContentInsertionFrame();
|
|
}
|
|
|
|
nsresult
|
|
nsComboboxControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
|
|
{
|
|
// The frames used to display the combo box and the button used to popup the dropdown list
|
|
// are created through anonymous content. The dropdown list is not created through anonymous
|
|
// content because it's 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();
|
|
|
|
NS_NewTextNode(getter_AddRefs(mDisplayContent), nimgr);
|
|
if (!mDisplayContent)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// 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;
|
|
|
|
nsCOMPtr<nsINodeInfo> nodeInfo;
|
|
nodeInfo = nimgr->GetNodeInfo(nsGkAtoms::button, nullptr, kNameSpaceID_XHTML,
|
|
nsIDOMNode::ELEMENT_NODE);
|
|
|
|
// create button which drops the list down
|
|
NS_NewHTMLElement(getter_AddRefs(mButtonContent), nodeInfo.forget(),
|
|
dom::NOT_FROM_PARSER);
|
|
if (!mButtonContent)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// make someone to listen to the button. If its pressed by someone like Accessibility
|
|
// then open or close the combo box.
|
|
mButtonListener = new nsComboButtonListener(this);
|
|
mButtonContent->AddEventListener(NS_LITERAL_STRING("click"), mButtonListener,
|
|
false, false);
|
|
|
|
mButtonContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
|
|
NS_LITERAL_STRING("button"), false);
|
|
// Set tabindex="-1" so that the button is not tabbable
|
|
mButtonContent->SetAttr(kNameSpaceID_None, nsGkAtoms::tabindex,
|
|
NS_LITERAL_STRING("-1"), false);
|
|
|
|
if (!aElements.AppendElement(mButtonContent))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,
|
|
uint32_t aFilter)
|
|
{
|
|
aElements.MaybeAppendElement(mDisplayContent);
|
|
aElements.MaybeAppendElement(mButtonContent);
|
|
}
|
|
|
|
// XXXbz this is a for-now hack. Now that display:inline-block works,
|
|
// need to revisit this.
|
|
class nsComboboxDisplayFrame : public nsBlockFrame {
|
|
public:
|
|
NS_DECL_FRAMEARENA_HELPERS
|
|
|
|
nsComboboxDisplayFrame (nsStyleContext* aContext,
|
|
nsComboboxControlFrame* aComboBox)
|
|
: nsBlockFrame(aContext),
|
|
mComboBox(aComboBox)
|
|
{}
|
|
|
|
// Need this so that line layout knows that this block's width
|
|
// depends on the available width.
|
|
virtual nsIAtom* GetType() const;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const
|
|
{
|
|
return nsBlockFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eReplacedContainsBlock));
|
|
}
|
|
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists);
|
|
|
|
protected:
|
|
nsComboboxControlFrame* mComboBox;
|
|
};
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsComboboxDisplayFrame)
|
|
|
|
nsIAtom*
|
|
nsComboboxDisplayFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::comboboxDisplayFrame;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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.mComputedBorderPadding.LeftRight();
|
|
if (computedWidth < 0) {
|
|
computedWidth = 0;
|
|
}
|
|
state.SetComputedWidth(computedWidth);
|
|
|
|
return nsBlockFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxDisplayFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsDisplayListCollection set;
|
|
nsresult rv = nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, set);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// remove background items if parent frame is themed
|
|
if (mComboBox->IsThemed()) {
|
|
set.BorderBackground()->DeleteAll();
|
|
}
|
|
|
|
set.MoveTo(aLists);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
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);
|
|
if (NS_UNLIKELY(!styleContext)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> textStyleContext;
|
|
textStyleContext = styleSet->ResolveStyleForNonElement(mStyleContext);
|
|
if (NS_UNLIKELY(!textStyleContext)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Start by by creating our anonymous block frame
|
|
mDisplayFrame = new (shell) nsComboboxDisplayFrame(styleContext, this);
|
|
if (NS_UNLIKELY(!mDisplayFrame)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsresult rv = mDisplayFrame->Init(mContent, this, nullptr);
|
|
if (NS_FAILED(rv)) {
|
|
mDisplayFrame->Destroy();
|
|
mDisplayFrame = nullptr;
|
|
return nullptr;
|
|
}
|
|
|
|
// Create a text frame and put it inside the block frame
|
|
nsIFrame* textFrame = NS_NewTextFrame(shell, textStyleContext);
|
|
if (NS_UNLIKELY(!textFrame)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// initialize the text frame
|
|
rv = textFrame->Init(aContent, mDisplayFrame, nullptr);
|
|
if (NS_FAILED(rv)) {
|
|
mDisplayFrame->Destroy();
|
|
mDisplayFrame = nullptr;
|
|
textFrame->Destroy();
|
|
textFrame = nullptr;
|
|
return 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) {
|
|
// Get parent view
|
|
nsIFrame * listFrame = do_QueryFrame(mListControlFrame);
|
|
if (listFrame) {
|
|
nsIView* view = listFrame->GetView();
|
|
NS_ASSERTION(view, "nsComboboxControlFrame view is null");
|
|
if (view) {
|
|
nsIWidget* widget = view->GetWidget();
|
|
if (widget)
|
|
widget->CaptureRollupEvents(this, false, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (kSelectPopupList == aListID) {
|
|
mPopupFrames.SetFrames(aChildList);
|
|
} else {
|
|
for (nsFrameList::Enumerator e(aChildList); !e.AtEnd(); e.Next()) {
|
|
nsCOMPtr<nsIFormControl> formControl =
|
|
do_QueryInterface(e.get()->GetContent());
|
|
if (formControl && formControl->GetType() == NS_FORM_BUTTON_BUTTON) {
|
|
mButtonFrame = e.get();
|
|
break;
|
|
}
|
|
}
|
|
NS_ASSERTION(mButtonFrame, "missing button frame in initial child list");
|
|
rv = nsBlockFrame::SetInitialChildList(aListID, aChildList);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
//nsIRollupListener
|
|
//----------------------------------------------------------------------
|
|
nsIContent*
|
|
nsComboboxControlFrame::Rollup(uint32_t aCount, bool aGetLastRolledUp)
|
|
{
|
|
if (mDroppedDown) {
|
|
nsWeakFrame weakFrame(this);
|
|
mListControlFrame->AboutToRollup(); // might destroy us
|
|
if (!weakFrame.IsAlive())
|
|
return nullptr;
|
|
ShowDropDown(false); // might destroy us
|
|
if (!weakFrame.IsAlive())
|
|
return nullptr;
|
|
mListControlFrame->CaptureMouseEvents(false);
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
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);
|
|
NS_DISPLAY_DECL_NAME("ComboboxFocus", TYPE_COMBOBOX_FOCUS)
|
|
};
|
|
|
|
void nsDisplayComboboxFocus::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
static_cast<nsComboboxControlFrame*>(mFrame)
|
|
->PaintFocus(*aCtx, ToReferenceFrame());
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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
|
|
nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} 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.
|
|
nsresult rv = nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
// draw a focus indicator only when focus rings should be drawn
|
|
nsIDocument* doc = mContent->GetCurrentDoc();
|
|
if (doc) {
|
|
nsPIDOMWindow* window = doc->GetWindow();
|
|
if (window && window->ShouldShowFocusRing()) {
|
|
nsPresContext *presContext = PresContext();
|
|
const nsStyleDisplay *disp = GetStyleDisplay();
|
|
if ((!IsThemed(disp) ||
|
|
!presContext->GetTheme()->ThemeDrawsFocusForWidget(presContext, this, disp->mAppearance)) &&
|
|
mDisplayFrame && IsVisibleForPainting(aBuilder)) {
|
|
nsresult rv = aLists.Content()->AppendNewToTop(
|
|
new (aBuilder) nsDisplayComboboxFocus(aBuilder, this));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
}
|
|
|
|
return DisplaySelectionOverlay(aBuilder, aLists.Content());
|
|
}
|
|
|
|
void nsComboboxControlFrame::PaintFocus(nsRenderingContext& aRenderingContext,
|
|
nsPoint aPt)
|
|
{
|
|
/* Do we need to do anything? */
|
|
nsEventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED) || sFocused != this)
|
|
return;
|
|
|
|
aRenderingContext.PushState();
|
|
nsRect clipRect = mDisplayFrame->GetRect() + aPt;
|
|
aRenderingContext.IntersectClip(clipRect);
|
|
|
|
// REVIEW: Why does the old code paint mDisplayFrame again? We've
|
|
// already painted it in the children above. So clipping it here won't do
|
|
// us much good.
|
|
|
|
/////////////////////
|
|
// draw focus
|
|
|
|
aRenderingContext.SetLineStyle(nsLineStyle_kDotted);
|
|
aRenderingContext.SetColor(GetStyleColor()->mColor);
|
|
|
|
//aRenderingContext.DrawRect(clipRect);
|
|
|
|
nscoord onePixel = nsPresContext::CSSPixelsToAppUnits(1);
|
|
clipRect.width -= onePixel;
|
|
clipRect.height -= onePixel;
|
|
aRenderingContext.DrawLine(clipRect.TopLeft(), clipRect.TopRight());
|
|
aRenderingContext.DrawLine(clipRect.TopRight(), clipRect.BottomRight());
|
|
aRenderingContext.DrawLine(clipRect.BottomRight(), clipRect.BottomLeft());
|
|
aRenderingContext.DrawLine(clipRect.BottomLeft(), clipRect.TopLeft());
|
|
|
|
aRenderingContext.PopState();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// gets the content (an option) by index and then set it as
|
|
// being selected or not selected
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::OnOptionSelected(int32_t aIndex, bool aSelected)
|
|
{
|
|
if (mDroppedDown) {
|
|
nsISelectControlFrame *selectFrame = do_QueryFrame(mListControlFrame);
|
|
if (selectFrame) {
|
|
selectFrame->OnOptionSelected(aIndex, aSelected);
|
|
}
|
|
} else {
|
|
if (aSelected) {
|
|
nsAutoScriptBlocker blocker;
|
|
RedisplayText(aIndex);
|
|
} else {
|
|
nsWeakFrame weakFrame(this);
|
|
RedisplaySelectedText();
|
|
if (weakFrame.IsAlive()) {
|
|
FireValueChangeEvent(); // Fire after old option is unselected
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsComboboxControlFrame::FireValueChangeEvent()
|
|
{
|
|
// Fire ValueChange event to indicate data value of combo box has changed
|
|
nsContentUtils::AddScriptRunner(
|
|
new nsAsyncDOMEvent(mContent, NS_LITERAL_STRING("ValueChange"), true,
|
|
false));
|
|
}
|
|
|
|
void
|
|
nsComboboxControlFrame::OnContentReset()
|
|
{
|
|
if (mListControlFrame) {
|
|
mListControlFrame->OnContentReset();
|
|
}
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------
|
|
// nsIStatefulFrame
|
|
//--------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::SaveState(SpecialStateID aStateID,
|
|
nsPresState** aState)
|
|
{
|
|
if (!mListControlFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIStatefulFrame* stateful = do_QueryFrame(mListControlFrame);
|
|
return stateful->SaveState(aStateID, aState);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsComboboxControlFrame::RestoreState(nsPresState* aState)
|
|
{
|
|
if (!mListControlFrame)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsIStatefulFrame* stateful = do_QueryFrame(mListControlFrame);
|
|
NS_ASSERTION(stateful, "Must implement nsIStatefulFrame");
|
|
return stateful->RestoreState(aState);
|
|
}
|
|
|
|
|
|
//
|
|
// Camino uses a native widget for the combobox
|
|
// popup, which affects drawing and event
|
|
// handling here and in nsListControlFrame.
|
|
//
|
|
// Also, Fennec use a custom combobox built-in widget
|
|
//
|
|
|
|
/* static */
|
|
bool
|
|
nsComboboxControlFrame::ToolkitHasNativePopup()
|
|
{
|
|
#ifdef MOZ_USE_NATIVE_POPUP_WINDOWS
|
|
return true;
|
|
#else
|
|
return false;
|
|
#endif /* MOZ_USE_NATIVE_POPUP_WINDOWS */
|
|
}
|
|
|