зеркало из https://github.com/mozilla/gecko-dev.git
2380 строки
81 KiB
C++
2380 строки
81 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nscore.h"
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#include "nsCOMPtr.h"
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#include "nsUnicharUtils.h"
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#include "nsListControlFrame.h"
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#include "nsCheckboxRadioFrame.h" // for COMPARE macro
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#include "nsGkAtoms.h"
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#include "nsComboboxControlFrame.h"
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#include "nsFontMetrics.h"
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#include "nsIScrollableFrame.h"
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#include "nsCSSRendering.h"
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#include "nsIDOMEventListener.h"
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#include "nsLayoutUtils.h"
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#include "nsDisplayList.h"
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#include "nsContentUtils.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/HTMLOptGroupElement.h"
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#include "mozilla/dom/HTMLOptionsCollection.h"
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#include "mozilla/dom/HTMLSelectElement.h"
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#include "mozilla/dom/MouseEvent.h"
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#include "mozilla/dom/MouseEventBinding.h"
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#include "mozilla/EventStateManager.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/Preferences.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/StaticPrefs_browser.h"
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#include "mozilla/StaticPrefs_ui.h"
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#include "mozilla/TextEvents.h"
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#include <algorithm>
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using namespace mozilla;
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using namespace mozilla::dom;
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// Constants
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const uint32_t kMaxDropDownRows = 20; // matches the setting for 4.x browsers
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const int32_t kNothingSelected = -1;
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// Static members
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nsListControlFrame* nsListControlFrame::mFocused = nullptr;
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nsString* nsListControlFrame::sIncrementalString = nullptr;
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DOMTimeStamp nsListControlFrame::gLastKeyTime = 0;
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/******************************************************************************
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* nsListEventListener
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* This class is responsible for propagating events to the nsListControlFrame.
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* Frames are not refcounted so they can't be used as event listeners.
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*****************************************************************************/
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class nsListEventListener final : public nsIDOMEventListener {
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public:
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explicit nsListEventListener(nsListControlFrame* aFrame) : mFrame(aFrame) {}
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void SetFrame(nsListControlFrame* aFrame) { mFrame = aFrame; }
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NS_DECL_ISUPPORTS
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// nsIDOMEventListener
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MOZ_CAN_RUN_SCRIPT_BOUNDARY
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NS_IMETHOD HandleEvent(Event* aEvent) override;
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private:
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~nsListEventListener() = default;
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nsListControlFrame* mFrame;
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};
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//---------------------------------------------------------
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nsContainerFrame* NS_NewListControlFrame(PresShell* aPresShell,
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ComputedStyle* aStyle) {
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nsListControlFrame* it =
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new (aPresShell) nsListControlFrame(aStyle, aPresShell->GetPresContext());
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it->AddStateBits(NS_FRAME_INDEPENDENT_SELECTION);
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return it;
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsListControlFrame)
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//---------------------------------------------------------
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nsListControlFrame::nsListControlFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsHTMLScrollFrame(aStyle, aPresContext, kClassID, false),
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mView(nullptr),
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mMightNeedSecondPass(false),
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mHasPendingInterruptAtStartOfReflow(false),
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mDropdownCanGrow(false),
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mForceSelection(false),
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mLastDropdownComputedBSize(NS_UNCONSTRAINEDSIZE) {
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mComboboxFrame = nullptr;
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mChangesSinceDragStart = false;
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mButtonDown = false;
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mIsAllContentHere = false;
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mIsAllFramesHere = false;
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mHasBeenInitialized = false;
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mNeedToReset = true;
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mPostChildrenLoadedReset = false;
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mControlSelectMode = false;
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}
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//---------------------------------------------------------
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nsListControlFrame::~nsListControlFrame() { mComboboxFrame = nullptr; }
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static bool ShouldFireDropDownEvent() {
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return (XRE_IsContentProcess() &&
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StaticPrefs::browser_tabs_remote_desktopbehavior()) ||
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Preferences::GetBool("dom.select_popup_in_parent.enabled", false);
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}
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// for Bug 47302 (remove this comment later)
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void nsListControlFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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// get the receiver interface from the browser button's content node
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NS_ENSURE_TRUE_VOID(mContent);
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// Clear the frame pointer on our event listener, just in case the
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// event listener can outlive the frame.
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mEventListener->SetFrame(nullptr);
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mContent->RemoveSystemEventListener(u"keydown"_ns, mEventListener, false);
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mContent->RemoveSystemEventListener(u"keypress"_ns, mEventListener, false);
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mContent->RemoveSystemEventListener(u"mousedown"_ns, mEventListener, false);
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mContent->RemoveSystemEventListener(u"mouseup"_ns, mEventListener, false);
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mContent->RemoveSystemEventListener(u"mousemove"_ns, mEventListener, false);
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if (ShouldFireDropDownEvent()) {
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nsContentUtils::AddScriptRunner(
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new AsyncEventDispatcher(mContent, u"mozhidedropdown"_ns,
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CanBubble::eYes, ChromeOnlyDispatch::eYes));
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}
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nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
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nsHTMLScrollFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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void nsListControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) {
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// We allow visibility:hidden <select>s to contain visible options.
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// Don't allow painting of list controls when painting is suppressed.
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// XXX why do we need this here? we should never reach this. Maybe
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// because these can have widgets? Hmm
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if (aBuilder->IsBackgroundOnly()) return;
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DO_GLOBAL_REFLOW_COUNT_DSP("nsListControlFrame");
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if (IsInDropDownMode()) {
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NS_ASSERTION(NS_GET_A(mLastDropdownBackstopColor) == 255,
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"need an opaque backstop color");
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// XXX Because we have an opaque widget and we get called to paint with
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// this frame as the root of a stacking context we need make sure to draw
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// some opaque color over the whole widget. (Bug 511323)
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aLists.BorderBackground()->AppendNewToBottom<nsDisplaySolidColor>(
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aBuilder, this, nsRect(aBuilder->ToReferenceFrame(this), GetSize()),
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mLastDropdownBackstopColor);
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}
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nsHTMLScrollFrame::BuildDisplayList(aBuilder, aLists);
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}
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/**
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* This is called by the SelectsAreaFrame, which is the same
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* as the frame returned by GetOptionsContainer. It's the frame which is
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* scrolled by us.
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* @param aPt the offset of this frame, relative to the rendering reference
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* frame
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*/
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void nsListControlFrame::PaintFocus(DrawTarget* aDrawTarget, nsPoint aPt) {
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if (mFocused != this) return;
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nsPresContext* presContext = PresContext();
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nsIFrame* containerFrame = GetOptionsContainer();
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if (!containerFrame) return;
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nsIFrame* childframe = nullptr;
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nsCOMPtr<nsIContent> focusedContent = GetCurrentOption();
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if (focusedContent) {
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childframe = focusedContent->GetPrimaryFrame();
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}
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nsRect fRect;
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if (childframe) {
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// get the child rect
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fRect = childframe->GetRect();
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// get it into our coordinates
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fRect.MoveBy(childframe->GetParent()->GetOffsetTo(this));
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} else {
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float inflation = nsLayoutUtils::FontSizeInflationFor(this);
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fRect.x = fRect.y = 0;
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if (GetWritingMode().IsVertical()) {
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fRect.width = GetScrollPortRect().width;
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fRect.height = CalcFallbackRowBSize(inflation);
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} else {
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fRect.width = CalcFallbackRowBSize(inflation);
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fRect.height = GetScrollPortRect().height;
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}
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fRect.MoveBy(containerFrame->GetOffsetTo(this));
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}
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fRect += aPt;
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bool lastItemIsSelected = false;
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HTMLOptionElement* domOpt = HTMLOptionElement::FromNodeOrNull(focusedContent);
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if (domOpt) {
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lastItemIsSelected = domOpt->Selected();
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}
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// set up back stop colors and then ask L&F service for the real colors
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nscolor color = LookAndFeel::GetColor(
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lastItemIsSelected ? LookAndFeel::ColorID::WidgetSelectForeground
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: LookAndFeel::ColorID::WidgetSelectBackground);
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nsCSSRendering::PaintFocus(presContext, aDrawTarget, fRect, color);
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}
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void nsListControlFrame::InvalidateFocus() {
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if (mFocused != this) return;
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nsIFrame* containerFrame = GetOptionsContainer();
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if (containerFrame) {
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containerFrame->InvalidateFrame();
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}
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}
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NS_QUERYFRAME_HEAD(nsListControlFrame)
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NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
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NS_QUERYFRAME_ENTRY(nsISelectControlFrame)
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NS_QUERYFRAME_ENTRY(nsListControlFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsHTMLScrollFrame)
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#ifdef ACCESSIBILITY
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a11y::AccType nsListControlFrame::AccessibleType() {
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return a11y::eHTMLSelectListType;
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}
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#endif
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// Return true if we found at least one <option> or non-empty <optgroup> label
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// that has a frame. aResult will be the maximum BSize of those.
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static bool GetMaxRowBSize(nsIFrame* aContainer, WritingMode aWM,
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nscoord* aResult) {
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bool found = false;
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for (nsIFrame* child : aContainer->PrincipalChildList()) {
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if (child->GetContent()->IsHTMLElement(nsGkAtoms::optgroup)) {
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// An optgroup; drill through any scroll frame and recurse. |inner| might
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// be null here though if |inner| is an anonymous leaf frame of some sort.
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auto inner = child->GetContentInsertionFrame();
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if (inner && GetMaxRowBSize(inner, aWM, aResult)) {
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found = true;
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}
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} else {
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// an option or optgroup label
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bool isOptGroupLabel =
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child->Style()->IsPseudoElement() &&
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aContainer->GetContent()->IsHTMLElement(nsGkAtoms::optgroup);
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nscoord childBSize = child->BSize(aWM);
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// XXX bug 1499176: skip empty <optgroup> labels (zero bsize) for now
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if (!isOptGroupLabel || childBSize > nscoord(0)) {
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found = true;
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*aResult = std::max(childBSize, *aResult);
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}
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}
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}
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return found;
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}
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//-----------------------------------------------------------------
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// Main Reflow for ListBox/Dropdown
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//-----------------------------------------------------------------
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nscoord nsListControlFrame::CalcBSizeOfARow() {
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// Calculate the block size in our writing mode of a single row in the
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// listbox or dropdown list by using the tallest thing in the subtree,
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// since there may be option groups in addition to option elements,
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// either of which may be visible or invisible, may use different
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// fonts, etc.
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nscoord rowBSize(0);
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if (StyleDisplay()->IsContainSize() ||
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!GetMaxRowBSize(GetOptionsContainer(), GetWritingMode(), &rowBSize)) {
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// We don't have any <option>s or <optgroup> labels with a frame.
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// (Or we're size-contained, which has the same outcome for our sizing.)
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float inflation = nsLayoutUtils::FontSizeInflationFor(this);
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rowBSize = CalcFallbackRowBSize(inflation);
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}
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return rowBSize;
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}
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nscoord nsListControlFrame::GetPrefISize(gfxContext* aRenderingContext) {
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nscoord result;
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DISPLAY_PREF_INLINE_SIZE(this, result);
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// Always add scrollbar inline sizes to the pref-inline-size of the
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// scrolled content. Combobox frames depend on this happening in the
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// dropdown, and standalone listboxes are overflow:scroll so they need
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// it too.
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WritingMode wm = GetWritingMode();
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result = StyleDisplay()->IsContainSize()
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? 0
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: GetScrolledFrame()->GetPrefISize(aRenderingContext);
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LogicalMargin scrollbarSize(
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wm, GetDesiredScrollbarSizes(PresContext(), aRenderingContext));
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result = NSCoordSaturatingAdd(result, scrollbarSize.IStartEnd(wm));
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return result;
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}
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nscoord nsListControlFrame::GetMinISize(gfxContext* aRenderingContext) {
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nscoord result;
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DISPLAY_MIN_INLINE_SIZE(this, result);
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// Always add scrollbar inline sizes to the min-inline-size of the
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// scrolled content. Combobox frames depend on this happening in the
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// dropdown, and standalone listboxes are overflow:scroll so they need
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// it too.
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WritingMode wm = GetWritingMode();
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result = StyleDisplay()->IsContainSize()
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? 0
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: GetScrolledFrame()->GetMinISize(aRenderingContext);
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LogicalMargin scrollbarSize(
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wm, GetDesiredScrollbarSizes(PresContext(), aRenderingContext));
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result += scrollbarSize.IStartEnd(wm);
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return result;
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}
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void nsListControlFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) {
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MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
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NS_WARNING_ASSERTION(aReflowInput.ComputedISize() != NS_UNCONSTRAINEDSIZE,
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"Must have a computed inline size");
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SchedulePaint();
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mHasPendingInterruptAtStartOfReflow = aPresContext->HasPendingInterrupt();
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// If all the content and frames are here
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// then initialize it before reflow
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if (mIsAllContentHere && !mHasBeenInitialized) {
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if (false == mIsAllFramesHere) {
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CheckIfAllFramesHere();
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}
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if (mIsAllFramesHere && !mHasBeenInitialized) {
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mHasBeenInitialized = true;
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}
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}
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if (HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
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nsCheckboxRadioFrame::RegUnRegAccessKey(this, true);
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}
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if (IsInDropDownMode()) {
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ReflowAsDropdown(aPresContext, aDesiredSize, aReflowInput, aStatus);
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return;
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}
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MarkInReflow();
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/*
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* Due to the fact that our intrinsic block size depends on the block
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* sizes of our kids, we end up having to do two-pass reflow, in
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* general -- the first pass to find the intrinsic block size and a
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* second pass to reflow the scrollframe at that block size (which
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* will size the scrollbars correctly, etc).
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*
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* Naturally, we want to avoid doing the second reflow as much as
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* possible.
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* We can skip it in the following cases (in all of which the first
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* reflow is already happening at the right block size):
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*
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* - We're reflowing with a constrained computed block size -- just
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* use that block size.
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* - We're not dirty and have no dirty kids and shouldn't be reflowing
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* all kids. In this case, our cached max block size of a child is
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* not going to change.
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* - We do our first reflow using our cached max block size of a
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* child, then compute the new max block size and it's the same as
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* the old one.
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*/
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bool autoBSize = (aReflowInput.ComputedBSize() == NS_UNCONSTRAINEDSIZE);
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mMightNeedSecondPass =
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autoBSize && (IsSubtreeDirty() || aReflowInput.ShouldReflowAllKids());
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ReflowInput state(aReflowInput);
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int32_t length = GetNumberOfRows();
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nscoord oldBSizeOfARow = BSizeOfARow();
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if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW) && autoBSize) {
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// When not doing an initial reflow, and when the block size is
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// auto, start off with our computed block size set to what we'd
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// expect our block size to be.
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nscoord computedBSize = CalcIntrinsicBSize(oldBSizeOfARow, length);
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computedBSize = state.ApplyMinMaxBSize(computedBSize);
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state.SetComputedBSize(computedBSize);
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}
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nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
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if (!mMightNeedSecondPass) {
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NS_ASSERTION(!autoBSize || BSizeOfARow() == oldBSizeOfARow,
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"How did our BSize of a row change if nothing was dirty?");
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NS_ASSERTION(!autoBSize || !HasAnyStateBits(NS_FRAME_FIRST_REFLOW),
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"How do we not need a second pass during initial reflow at "
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"auto BSize?");
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NS_ASSERTION(!IsScrollbarUpdateSuppressed(),
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"Shouldn't be suppressing if we don't need a second pass!");
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if (!autoBSize) {
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// Update our mNumDisplayRows based on our new row block size now
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// that we know it. Note that if autoBSize and we landed in this
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// code then we already set mNumDisplayRows in CalcIntrinsicBSize.
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// Also note that we can't use BSizeOfARow() here because that
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// just uses a cached value that we didn't compute.
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nscoord rowBSize = CalcBSizeOfARow();
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if (rowBSize == 0) {
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// Just pick something
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mNumDisplayRows = 1;
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} else {
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mNumDisplayRows = std::max(1, state.ComputedBSize() / rowBSize);
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}
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}
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return;
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}
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mMightNeedSecondPass = false;
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// Now see whether we need a second pass. If we do, our
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// nsSelectsAreaFrame will have suppressed the scrollbar update.
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if (!IsScrollbarUpdateSuppressed()) {
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// All done. No need to do more reflow.
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return;
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}
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SetSuppressScrollbarUpdate(false);
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// Gotta reflow again.
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// XXXbz We're just changing the block size here; do we need to dirty
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// ourselves or anything like that? We might need to, per the letter
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// of the reflow protocol, but things seem to work fine without it...
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// Is that just an implementation detail of nsHTMLScrollFrame that
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// we're depending on?
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nsHTMLScrollFrame::DidReflow(aPresContext, &state);
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// Now compute the block size we want to have
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nscoord computedBSize = CalcIntrinsicBSize(BSizeOfARow(), length);
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computedBSize = state.ApplyMinMaxBSize(computedBSize);
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state.SetComputedBSize(computedBSize);
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// XXXbz to make the ascent really correct, we should add our
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// mComputedPadding.top to it (and subtract it from descent). Need that
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// because nsGfxScrollFrame just adds in the border....
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aStatus.Reset();
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nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
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}
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void nsListControlFrame::ReflowAsDropdown(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) {
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MOZ_ASSERT(aReflowInput.ComputedBSize() == NS_UNCONSTRAINEDSIZE,
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"We should not have a computed block size here!");
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|
|
mMightNeedSecondPass = IsSubtreeDirty() || aReflowInput.ShouldReflowAllKids();
|
|
|
|
WritingMode wm = aReflowInput.GetWritingMode();
|
|
#ifdef DEBUG
|
|
nscoord oldBSizeOfARow = BSizeOfARow();
|
|
nscoord oldVisibleBSize = HasAnyStateBits(NS_FRAME_FIRST_REFLOW)
|
|
? NS_UNCONSTRAINEDSIZE
|
|
: GetScrolledFrame()->BSize(wm);
|
|
#endif
|
|
|
|
ReflowInput state(aReflowInput);
|
|
|
|
if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
|
|
// When not doing an initial reflow, and when the block size is
|
|
// auto, start off with our computed block size set to what we'd
|
|
// expect our block size to be.
|
|
// Note: At this point, mLastDropdownComputedBSize can be
|
|
// NS_UNCONSTRAINEDSIZE in cases when last time we didn't have to
|
|
// constrain the block size. That's fine; just do the same thing as
|
|
// last time.
|
|
state.SetComputedBSize(mLastDropdownComputedBSize);
|
|
}
|
|
|
|
nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
|
|
if (!mMightNeedSecondPass) {
|
|
NS_ASSERTION(oldVisibleBSize == GetScrolledFrame()->BSize(wm),
|
|
"How did our kid's BSize change if nothing was dirty?");
|
|
NS_ASSERTION(BSizeOfARow() == oldBSizeOfARow,
|
|
"How did our BSize of a row change if nothing was dirty?");
|
|
NS_ASSERTION(!IsScrollbarUpdateSuppressed(),
|
|
"Shouldn't be suppressing if we don't need a second pass!");
|
|
NS_ASSERTION(!HasAnyStateBits(NS_FRAME_FIRST_REFLOW),
|
|
"How can we avoid a second pass during first reflow?");
|
|
return;
|
|
}
|
|
|
|
mMightNeedSecondPass = false;
|
|
|
|
// Now see whether we need a second pass. If we do, our nsSelectsAreaFrame
|
|
// will have suppressed the scrollbar update.
|
|
if (!IsScrollbarUpdateSuppressed()) {
|
|
// All done. No need to do more reflow.
|
|
NS_ASSERTION(!HasAnyStateBits(NS_FRAME_FIRST_REFLOW),
|
|
"How can we avoid a second pass during first reflow?");
|
|
return;
|
|
}
|
|
|
|
SetSuppressScrollbarUpdate(false);
|
|
|
|
nscoord visibleBSize = GetScrolledFrame()->BSize(wm);
|
|
nscoord blockSizeOfARow = BSizeOfARow();
|
|
|
|
// Gotta reflow again.
|
|
// XXXbz We're just changing the block size here; do we need to dirty
|
|
// ourselves or anything like that? We might need to, per the letter
|
|
// of the reflow protocol, but things seem to work fine without it...
|
|
// Is that just an implementation detail of nsHTMLScrollFrame that
|
|
// we're depending on?
|
|
nsHTMLScrollFrame::DidReflow(aPresContext, &state);
|
|
|
|
// Now compute the block size we want to have.
|
|
// Note: no need to apply min/max constraints, since we have no such
|
|
// rules applied to the combobox dropdown.
|
|
|
|
mDropdownCanGrow = false;
|
|
if (visibleBSize <= 0 || blockSizeOfARow <= 0 || XRE_IsContentProcess()) {
|
|
// Looks like we have no options. Just size us to a single row
|
|
// block size.
|
|
state.SetComputedBSize(blockSizeOfARow);
|
|
// mNumDisplayRows is used as the number of options to move for the page
|
|
// up/down keys. If we're in a content process, we can't calculate
|
|
// mNumDisplayRows properly, but the maximum number of rows is a lot more
|
|
// uesful for page up/down than 1.
|
|
mNumDisplayRows = XRE_IsContentProcess() ? kMaxDropDownRows : 1;
|
|
} else {
|
|
nsComboboxControlFrame* combobox =
|
|
static_cast<nsComboboxControlFrame*>(mComboboxFrame);
|
|
LogicalPoint translation(wm);
|
|
nscoord before, after;
|
|
combobox->GetAvailableDropdownSpace(wm, &before, &after, &translation);
|
|
if (before <= 0 && after <= 0) {
|
|
state.SetComputedBSize(blockSizeOfARow);
|
|
mNumDisplayRows = 1;
|
|
mDropdownCanGrow = GetNumberOfRows() > 1;
|
|
} else {
|
|
nscoord bp = aReflowInput.ComputedLogicalBorderPadding().BStartEnd(wm);
|
|
nscoord availableBSize = std::max(before, after) - bp;
|
|
nscoord newBSize;
|
|
uint32_t rows;
|
|
if (visibleBSize <= availableBSize) {
|
|
// The dropdown fits in the available block size.
|
|
rows = GetNumberOfRows();
|
|
mNumDisplayRows = clamped<uint32_t>(rows, 1, kMaxDropDownRows);
|
|
if (mNumDisplayRows == rows) {
|
|
newBSize = visibleBSize; // use the exact block size
|
|
} else {
|
|
newBSize = mNumDisplayRows * blockSizeOfARow; // approximate
|
|
// The approximation here might actually be too big (bug 1208978);
|
|
// don't let it exceed the actual block-size of the list.
|
|
newBSize = std::min(newBSize, visibleBSize);
|
|
}
|
|
} else {
|
|
rows = availableBSize / blockSizeOfARow;
|
|
mNumDisplayRows = clamped<uint32_t>(rows, 1, kMaxDropDownRows);
|
|
newBSize = mNumDisplayRows * blockSizeOfARow; // approximate
|
|
}
|
|
state.SetComputedBSize(newBSize);
|
|
mDropdownCanGrow = visibleBSize - newBSize >= blockSizeOfARow &&
|
|
mNumDisplayRows != kMaxDropDownRows;
|
|
}
|
|
}
|
|
|
|
mLastDropdownComputedBSize = state.ComputedBSize();
|
|
|
|
aStatus.Reset();
|
|
nsHTMLScrollFrame::Reflow(aPresContext, aDesiredSize, state, aStatus);
|
|
}
|
|
|
|
ScrollStyles nsListControlFrame::GetScrollStyles() const {
|
|
// We can't express this in the style system yet; when we can, this can go
|
|
// away and GetScrollStyles can be devirtualized
|
|
auto style = IsInDropDownMode() ? StyleOverflow::Auto : StyleOverflow::Scroll;
|
|
if (GetWritingMode().IsVertical()) {
|
|
return ScrollStyles(style, StyleOverflow::Hidden);
|
|
} else {
|
|
return ScrollStyles(StyleOverflow::Hidden, style);
|
|
}
|
|
}
|
|
|
|
bool nsListControlFrame::ShouldPropagateComputedBSizeToScrolledContent() const {
|
|
return !IsInDropDownMode();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsContainerFrame* nsListControlFrame::GetContentInsertionFrame() {
|
|
return GetOptionsContainer()->GetContentInsertionFrame();
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool nsListControlFrame::ExtendedSelection(int32_t aStartIndex,
|
|
int32_t aEndIndex, bool aClearAll) {
|
|
return SetOptionsSelectedFromFrame(aStartIndex, aEndIndex, true, aClearAll);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool nsListControlFrame::SingleSelection(int32_t aClickedIndex,
|
|
bool aDoToggle) {
|
|
if (mComboboxFrame) {
|
|
mComboboxFrame->UpdateRecentIndex(GetSelectedIndex());
|
|
}
|
|
|
|
bool wasChanged = false;
|
|
// Get Current selection
|
|
if (aDoToggle) {
|
|
wasChanged = ToggleOptionSelectedFromFrame(aClickedIndex);
|
|
} else {
|
|
wasChanged =
|
|
SetOptionsSelectedFromFrame(aClickedIndex, aClickedIndex, true, true);
|
|
}
|
|
AutoWeakFrame weakFrame(this);
|
|
ScrollToIndex(aClickedIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return wasChanged;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
bool isCurrentOptionChanged = mEndSelectionIndex != aClickedIndex;
|
|
#endif
|
|
mStartSelectionIndex = aClickedIndex;
|
|
mEndSelectionIndex = aClickedIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (isCurrentOptionChanged) {
|
|
FireMenuItemActiveEvent();
|
|
}
|
|
#endif
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
void nsListControlFrame::InitSelectionRange(int32_t aClickedIndex) {
|
|
//
|
|
// If nothing is selected, set the start selection depending on where
|
|
// the user clicked and what the initial selection is:
|
|
// - if the user clicked *before* selectedIndex, set the start index to
|
|
// the end of the first contiguous selection.
|
|
// - if the user clicked *after* the end of the first contiguous
|
|
// selection, set the start index to selectedIndex.
|
|
// - if the user clicked *within* the first contiguous selection, set the
|
|
// start index to selectedIndex.
|
|
// The last two rules, of course, boil down to the same thing: if the user
|
|
// clicked >= selectedIndex, return selectedIndex.
|
|
//
|
|
// This makes it so that shift click works properly when you first click
|
|
// in a multiple select.
|
|
//
|
|
int32_t selectedIndex = GetSelectedIndex();
|
|
if (selectedIndex >= 0) {
|
|
// Get the end of the contiguous selection
|
|
RefPtr<dom::HTMLOptionsCollection> options = GetOptions();
|
|
NS_ASSERTION(options, "Collection of options is null!");
|
|
uint32_t numOptions = options->Length();
|
|
// Push i to one past the last selected index in the group.
|
|
uint32_t i;
|
|
for (i = selectedIndex + 1; i < numOptions; i++) {
|
|
if (!options->ItemAsOption(i)->Selected()) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (aClickedIndex < selectedIndex) {
|
|
// User clicked before selection, so start selection at end of
|
|
// contiguous selection
|
|
mStartSelectionIndex = i - 1;
|
|
mEndSelectionIndex = selectedIndex;
|
|
} else {
|
|
// User clicked after selection, so start selection at start of
|
|
// contiguous selection
|
|
mStartSelectionIndex = selectedIndex;
|
|
mEndSelectionIndex = i - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static uint32_t CountOptionsAndOptgroups(nsIFrame* aFrame) {
|
|
uint32_t count = 0;
|
|
nsFrameList::Enumerator e(aFrame->PrincipalChildList());
|
|
for (; !e.AtEnd(); e.Next()) {
|
|
nsIFrame* child = e.get();
|
|
nsIContent* content = child->GetContent();
|
|
if (content) {
|
|
if (content->IsHTMLElement(nsGkAtoms::option)) {
|
|
++count;
|
|
} else {
|
|
RefPtr<HTMLOptGroupElement> optgroup =
|
|
HTMLOptGroupElement::FromNode(content);
|
|
if (optgroup) {
|
|
nsAutoString label;
|
|
optgroup->GetLabel(label);
|
|
if (label.Length() > 0) {
|
|
++count;
|
|
}
|
|
count += CountOptionsAndOptgroups(child);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
uint32_t nsListControlFrame::GetNumberOfRows() {
|
|
return ::CountOptionsAndOptgroups(GetContentInsertionFrame());
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool nsListControlFrame::PerformSelection(int32_t aClickedIndex, bool aIsShift,
|
|
bool aIsControl) {
|
|
bool wasChanged = false;
|
|
|
|
if (aClickedIndex == kNothingSelected && !mForceSelection) {
|
|
// Ignore kNothingSelected unless the selection is forced
|
|
} else if (GetMultiple()) {
|
|
if (aIsShift) {
|
|
// Make sure shift+click actually does something expected when
|
|
// the user has never clicked on the select
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
InitSelectionRange(aClickedIndex);
|
|
}
|
|
|
|
// Get the range from beginning (low) to end (high)
|
|
// Shift *always* works, even if the current option is disabled
|
|
int32_t startIndex;
|
|
int32_t endIndex;
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
startIndex = aClickedIndex;
|
|
endIndex = aClickedIndex;
|
|
} else if (mStartSelectionIndex <= aClickedIndex) {
|
|
startIndex = mStartSelectionIndex;
|
|
endIndex = aClickedIndex;
|
|
} else {
|
|
startIndex = aClickedIndex;
|
|
endIndex = mStartSelectionIndex;
|
|
}
|
|
|
|
// Clear only if control was not pressed
|
|
wasChanged = ExtendedSelection(startIndex, endIndex, !aIsControl);
|
|
AutoWeakFrame weakFrame(this);
|
|
ScrollToIndex(aClickedIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return wasChanged;
|
|
}
|
|
|
|
if (mStartSelectionIndex == kNothingSelected) {
|
|
mStartSelectionIndex = aClickedIndex;
|
|
}
|
|
#ifdef ACCESSIBILITY
|
|
bool isCurrentOptionChanged = mEndSelectionIndex != aClickedIndex;
|
|
#endif
|
|
mEndSelectionIndex = aClickedIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (isCurrentOptionChanged) {
|
|
FireMenuItemActiveEvent();
|
|
}
|
|
#endif
|
|
} else if (aIsControl) {
|
|
wasChanged = SingleSelection(aClickedIndex, true); // might destroy us
|
|
} else {
|
|
wasChanged = SingleSelection(aClickedIndex, false); // might destroy us
|
|
}
|
|
} else {
|
|
wasChanged = SingleSelection(aClickedIndex, false); // might destroy us
|
|
}
|
|
|
|
return wasChanged;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
bool nsListControlFrame::HandleListSelection(dom::Event* aEvent,
|
|
int32_t aClickedIndex) {
|
|
MouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
bool isControl;
|
|
#ifdef XP_MACOSX
|
|
isControl = mouseEvent->MetaKey();
|
|
#else
|
|
isControl = mouseEvent->CtrlKey();
|
|
#endif
|
|
bool isShift = mouseEvent->ShiftKey();
|
|
return PerformSelection(aClickedIndex, isShift,
|
|
isControl); // might destroy us
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void nsListControlFrame::CaptureMouseEvents(bool aGrabMouseEvents) {
|
|
// Currently cocoa widgets use a native popup widget which tracks clicks
|
|
// synchronously, so we never want to do mouse capturing. Note that we only
|
|
// bail if the list is in drop-down mode, and the caller is requesting capture
|
|
// (we let release capture requests go through to ensure that we can release
|
|
// capture requested via other code paths, if any exist).
|
|
if (aGrabMouseEvents && IsInDropDownMode() &&
|
|
nsComboboxControlFrame::ToolkitHasNativePopup())
|
|
return;
|
|
|
|
if (aGrabMouseEvents) {
|
|
PresShell::SetCapturingContent(mContent, CaptureFlags::IgnoreAllowedState);
|
|
} else {
|
|
nsIContent* capturingContent = PresShell::GetCapturingContent();
|
|
|
|
bool dropDownIsHidden = false;
|
|
if (IsInDropDownMode()) {
|
|
dropDownIsHidden = !mComboboxFrame->IsDroppedDown();
|
|
}
|
|
if (capturingContent == mContent || dropDownIsHidden) {
|
|
// only clear the capturing content if *we* are the ones doing the
|
|
// capturing (or if the dropdown is hidden, in which case NO-ONE should
|
|
// be capturing anything - it could be a scrollbar inside this listbox
|
|
// which is actually grabbing
|
|
// This shouldn't be necessary. We should simply ensure that events
|
|
// targeting scrollbars are never visible to DOM consumers.
|
|
PresShell::ReleaseCapturingContent();
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsresult nsListControlFrame::HandleEvent(nsPresContext* aPresContext,
|
|
WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus) {
|
|
NS_ENSURE_ARG_POINTER(aEventStatus);
|
|
|
|
/*const char * desc[] = {"eMouseMove",
|
|
"NS_MOUSE_LEFT_BUTTON_UP",
|
|
"NS_MOUSE_LEFT_BUTTON_DOWN",
|
|
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
|
|
"NS_MOUSE_MIDDLE_BUTTON_UP",
|
|
"NS_MOUSE_MIDDLE_BUTTON_DOWN",
|
|
"<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>","<NA>",
|
|
"NS_MOUSE_RIGHT_BUTTON_UP",
|
|
"NS_MOUSE_RIGHT_BUTTON_DOWN",
|
|
"eMouseOver",
|
|
"eMouseOut",
|
|
"NS_MOUSE_LEFT_DOUBLECLICK",
|
|
"NS_MOUSE_MIDDLE_DOUBLECLICK",
|
|
"NS_MOUSE_RIGHT_DOUBLECLICK",
|
|
"NS_MOUSE_LEFT_CLICK",
|
|
"NS_MOUSE_MIDDLE_CLICK",
|
|
"NS_MOUSE_RIGHT_CLICK"};
|
|
int inx = aEvent->mMessage - eMouseEventFirst;
|
|
if (inx >= 0 && inx <= (NS_MOUSE_RIGHT_CLICK - eMouseEventFirst)) {
|
|
printf("Mouse in ListFrame %s [%d]\n", desc[inx], aEvent->mMessage);
|
|
} else {
|
|
printf("Mouse in ListFrame <UNKNOWN> [%d]\n", aEvent->mMessage);
|
|
}*/
|
|
|
|
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) return NS_OK;
|
|
|
|
// disabled state affects how we're selected, but we don't want to go through
|
|
// nsHTMLScrollFrame if we're disabled.
|
|
if (IsContentDisabled()) {
|
|
return nsIFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
return nsHTMLScrollFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void nsListControlFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList) {
|
|
if (aListID == kPrincipalList) {
|
|
// First check to see if all the content has been added
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = false;
|
|
mHasBeenInitialized = false;
|
|
}
|
|
}
|
|
nsHTMLScrollFrame::SetInitialChildList(aListID, aChildList);
|
|
|
|
// If all the content is here now check
|
|
// to see if all the frames have been created
|
|
/*if (mIsAllContentHere) {
|
|
// If all content and frames are here
|
|
// the reset/initialize
|
|
if (CheckIfAllFramesHere()) {
|
|
ResetList(aPresContext);
|
|
mHasBeenInitialized = true;
|
|
}
|
|
}*/
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void nsListControlFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) {
|
|
nsHTMLScrollFrame::Init(aContent, aParent, aPrevInFlow);
|
|
|
|
if (IsInDropDownMode()) {
|
|
AddStateBits(NS_FRAME_IN_POPUP);
|
|
CreateView();
|
|
}
|
|
|
|
// we shouldn't have to unregister this listener because when
|
|
// our frame goes away all these content node go away as well
|
|
// because our frame is the only one who references them.
|
|
// we need to hook up our listeners before the editor is initialized
|
|
mEventListener = new nsListEventListener(this);
|
|
|
|
mContent->AddSystemEventListener(u"keydown"_ns, mEventListener, false, false);
|
|
mContent->AddSystemEventListener(u"keypress"_ns, mEventListener, false,
|
|
false);
|
|
mContent->AddSystemEventListener(u"mousedown"_ns, mEventListener, false,
|
|
false);
|
|
mContent->AddSystemEventListener(u"mouseup"_ns, mEventListener, false, false);
|
|
mContent->AddSystemEventListener(u"mousemove"_ns, mEventListener, false,
|
|
false);
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
|
|
mLastDropdownBackstopColor = PresContext()->DefaultBackgroundColor();
|
|
}
|
|
|
|
dom::HTMLOptionsCollection* nsListControlFrame::GetOptions() const {
|
|
dom::HTMLSelectElement* select =
|
|
dom::HTMLSelectElement::FromNodeOrNull(mContent);
|
|
NS_ENSURE_TRUE(select, nullptr);
|
|
|
|
return select->Options();
|
|
}
|
|
|
|
dom::HTMLOptionElement* nsListControlFrame::GetOption(uint32_t aIndex) const {
|
|
dom::HTMLSelectElement* select =
|
|
dom::HTMLSelectElement::FromNodeOrNull(mContent);
|
|
NS_ENSURE_TRUE(select, nullptr);
|
|
|
|
return select->Item(aIndex);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::OnOptionSelected(int32_t aIndex, bool aSelected) {
|
|
if (aSelected) {
|
|
ScrollToIndex(aIndex);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsListControlFrame::OnContentReset() { ResetList(true); }
|
|
|
|
void nsListControlFrame::ResetList(bool aAllowScrolling) {
|
|
// if all the frames aren't here
|
|
// don't bother reseting
|
|
if (!mIsAllFramesHere) {
|
|
return;
|
|
}
|
|
|
|
if (aAllowScrolling) {
|
|
mPostChildrenLoadedReset = true;
|
|
|
|
// Scroll to the selected index
|
|
int32_t indexToSelect = kNothingSelected;
|
|
|
|
HTMLSelectElement* selectElement = HTMLSelectElement::FromNode(mContent);
|
|
if (selectElement) {
|
|
indexToSelect = selectElement->SelectedIndex();
|
|
AutoWeakFrame weakFrame(this);
|
|
ScrollToIndex(indexToSelect);
|
|
if (!weakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
InvalidateFocus();
|
|
// Combobox will redisplay itself with the OnOptionSelected event
|
|
}
|
|
|
|
void nsListControlFrame::SetFocus(bool aOn, bool aRepaint) {
|
|
InvalidateFocus();
|
|
|
|
if (aOn) {
|
|
ComboboxFocusSet();
|
|
mFocused = this;
|
|
} else {
|
|
mFocused = nullptr;
|
|
}
|
|
|
|
InvalidateFocus();
|
|
}
|
|
|
|
void nsListControlFrame::ComboboxFocusSet() { gLastKeyTime = 0; }
|
|
|
|
void nsListControlFrame::SetComboboxFrame(nsIFrame* aComboboxFrame) {
|
|
if (nullptr != aComboboxFrame) {
|
|
mComboboxFrame = do_QueryFrame(aComboboxFrame);
|
|
}
|
|
}
|
|
|
|
void nsListControlFrame::GetOptionText(uint32_t aIndex, nsAString& aStr) {
|
|
aStr.Truncate();
|
|
if (dom::HTMLOptionElement* optionElement = GetOption(aIndex)) {
|
|
optionElement->GetRenderedLabel(aStr);
|
|
}
|
|
}
|
|
|
|
int32_t nsListControlFrame::GetSelectedIndex() {
|
|
dom::HTMLSelectElement* select =
|
|
dom::HTMLSelectElement::FromNodeOrNull(mContent);
|
|
return select->SelectedIndex();
|
|
}
|
|
|
|
dom::HTMLOptionElement* nsListControlFrame::GetCurrentOption() {
|
|
// The mEndSelectionIndex is what is currently being selected. Use
|
|
// the selected index if this is kNothingSelected.
|
|
int32_t focusedIndex = (mEndSelectionIndex == kNothingSelected)
|
|
? GetSelectedIndex()
|
|
: mEndSelectionIndex;
|
|
|
|
if (focusedIndex != kNothingSelected) {
|
|
return GetOption(AssertedCast<uint32_t>(focusedIndex));
|
|
}
|
|
|
|
// There is no selected option. Return the first non-disabled option, if any.
|
|
return GetNonDisabledOptionFrom(0);
|
|
}
|
|
|
|
HTMLOptionElement* nsListControlFrame::GetNonDisabledOptionFrom(
|
|
int32_t aFromIndex, int32_t* aFoundIndex) {
|
|
RefPtr<dom::HTMLSelectElement> selectElement =
|
|
dom::HTMLSelectElement::FromNode(mContent);
|
|
|
|
const uint32_t length = selectElement->Length();
|
|
for (uint32_t i = std::max(aFromIndex, 0); i < length; ++i) {
|
|
HTMLOptionElement* node = selectElement->Item(i);
|
|
if (!node) {
|
|
break;
|
|
}
|
|
if (IsOptionInteractivelySelectable(selectElement, node)) {
|
|
if (aFoundIndex) {
|
|
*aFoundIndex = i;
|
|
}
|
|
return node;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool nsListControlFrame::IsInDropDownMode() const {
|
|
return (mComboboxFrame != nullptr);
|
|
}
|
|
|
|
uint32_t nsListControlFrame::GetNumberOfOptions() {
|
|
dom::HTMLOptionsCollection* options = GetOptions();
|
|
if (!options) {
|
|
return 0;
|
|
}
|
|
|
|
return options->Length();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
bool nsListControlFrame::CheckIfAllFramesHere() {
|
|
// XXX Need to find a fail proof way to determine that
|
|
// all the frames are there
|
|
mIsAllFramesHere = true;
|
|
|
|
// now make sure we have a frame each piece of content
|
|
|
|
return mIsAllFramesHere;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::DoneAddingChildren(bool aIsDone) {
|
|
mIsAllContentHere = aIsDone;
|
|
if (mIsAllContentHere) {
|
|
// Here we check to see if all the frames have been created
|
|
// for all the content.
|
|
// If so, then we can initialize;
|
|
if (!mIsAllFramesHere) {
|
|
// if all the frames are now present we can initialize
|
|
if (CheckIfAllFramesHere()) {
|
|
mHasBeenInitialized = true;
|
|
ResetList(true);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::AddOption(int32_t aIndex) {
|
|
#ifdef DO_REFLOW_DEBUG
|
|
printf("---- Id: %d nsLCF %p Added Option %d\n", mReflowId, this, aIndex);
|
|
#endif
|
|
|
|
if (!mIsAllContentHere) {
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = false;
|
|
mHasBeenInitialized = false;
|
|
} else {
|
|
mIsAllFramesHere =
|
|
(aIndex == static_cast<int32_t>(GetNumberOfOptions() - 1));
|
|
}
|
|
}
|
|
|
|
// Make sure we scroll to the selected option as needed
|
|
mNeedToReset = true;
|
|
|
|
if (!mHasBeenInitialized) {
|
|
return NS_OK;
|
|
}
|
|
|
|
mPostChildrenLoadedReset = mIsAllContentHere;
|
|
return NS_OK;
|
|
}
|
|
|
|
static int32_t DecrementAndClamp(int32_t aSelectionIndex, int32_t aLength) {
|
|
return aLength == 0 ? kNothingSelected : std::max(0, aSelectionIndex - 1);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsListControlFrame::RemoveOption(int32_t aIndex) {
|
|
MOZ_ASSERT(aIndex >= 0, "negative <option> index");
|
|
|
|
// Need to reset if we're a dropdown
|
|
if (IsInDropDownMode()) {
|
|
mNeedToReset = true;
|
|
mPostChildrenLoadedReset = mIsAllContentHere;
|
|
}
|
|
|
|
if (mStartSelectionIndex != kNothingSelected) {
|
|
NS_ASSERTION(mEndSelectionIndex != kNothingSelected, "");
|
|
int32_t numOptions = GetNumberOfOptions();
|
|
// NOTE: numOptions is the new number of options whereas aIndex is the
|
|
// unadjusted index of the removed option (hence the <= below).
|
|
NS_ASSERTION(aIndex <= numOptions, "out-of-bounds <option> index");
|
|
|
|
int32_t forward = mEndSelectionIndex - mStartSelectionIndex;
|
|
int32_t* low = forward >= 0 ? &mStartSelectionIndex : &mEndSelectionIndex;
|
|
int32_t* high = forward >= 0 ? &mEndSelectionIndex : &mStartSelectionIndex;
|
|
if (aIndex < *low) *low = ::DecrementAndClamp(*low, numOptions);
|
|
if (aIndex <= *high) *high = ::DecrementAndClamp(*high, numOptions);
|
|
if (forward == 0) *low = *high;
|
|
} else
|
|
NS_ASSERTION(mEndSelectionIndex == kNothingSelected, "");
|
|
|
|
InvalidateFocus();
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
// Set the option selected in the DOM. This method is named
|
|
// as it is because it indicates that the frame is the source
|
|
// of this event rather than the receiver.
|
|
bool nsListControlFrame::SetOptionsSelectedFromFrame(int32_t aStartIndex,
|
|
int32_t aEndIndex,
|
|
bool aValue,
|
|
bool aClearAll) {
|
|
RefPtr<dom::HTMLSelectElement> selectElement =
|
|
dom::HTMLSelectElement::FromNode(mContent);
|
|
|
|
uint32_t mask = dom::HTMLSelectElement::NOTIFY;
|
|
if (mForceSelection) {
|
|
mask |= dom::HTMLSelectElement::SET_DISABLED;
|
|
}
|
|
if (aValue) {
|
|
mask |= dom::HTMLSelectElement::IS_SELECTED;
|
|
}
|
|
if (aClearAll) {
|
|
mask |= dom::HTMLSelectElement::CLEAR_ALL;
|
|
}
|
|
|
|
return selectElement->SetOptionsSelectedByIndex(aStartIndex, aEndIndex, mask);
|
|
}
|
|
|
|
bool nsListControlFrame::ToggleOptionSelectedFromFrame(int32_t aIndex) {
|
|
RefPtr<dom::HTMLOptionElement> option =
|
|
GetOption(static_cast<uint32_t>(aIndex));
|
|
NS_ENSURE_TRUE(option, false);
|
|
|
|
RefPtr<dom::HTMLSelectElement> selectElement =
|
|
dom::HTMLSelectElement::FromNode(mContent);
|
|
|
|
uint32_t mask = dom::HTMLSelectElement::NOTIFY;
|
|
if (!option->Selected()) {
|
|
mask |= dom::HTMLSelectElement::IS_SELECTED;
|
|
}
|
|
|
|
return selectElement->SetOptionsSelectedByIndex(aIndex, aIndex, mask);
|
|
}
|
|
|
|
// Dispatch event and such
|
|
bool nsListControlFrame::UpdateSelection() {
|
|
if (mIsAllFramesHere) {
|
|
// if it's a combobox, display the new text
|
|
AutoWeakFrame weakFrame(this);
|
|
if (mComboboxFrame) {
|
|
mComboboxFrame->RedisplaySelectedText();
|
|
|
|
// When dropdown list is open, onchange event will be fired when Enter key
|
|
// is hit or when dropdown list is dismissed.
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
return weakFrame.IsAlive();
|
|
}
|
|
}
|
|
if (mIsAllContentHere) {
|
|
FireOnInputAndOnChange();
|
|
}
|
|
return weakFrame.IsAlive();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void nsListControlFrame::ComboboxFinish(int32_t aIndex) {
|
|
gLastKeyTime = 0;
|
|
|
|
if (mComboboxFrame) {
|
|
int32_t displayIndex = mComboboxFrame->GetIndexOfDisplayArea();
|
|
// Make sure we can always reset to the displayed index
|
|
mForceSelection = displayIndex == aIndex;
|
|
|
|
AutoWeakFrame weakFrame(this);
|
|
PerformSelection(aIndex, false, false); // might destroy us
|
|
if (!weakFrame.IsAlive() || !mComboboxFrame) {
|
|
return;
|
|
}
|
|
|
|
if (displayIndex != aIndex) {
|
|
mComboboxFrame->RedisplaySelectedText(); // might destroy us
|
|
}
|
|
|
|
if (weakFrame.IsAlive() && mComboboxFrame) {
|
|
mComboboxFrame->RollupFromList(); // might destroy us
|
|
}
|
|
}
|
|
}
|
|
|
|
// Send out an onInput and onChange notification.
|
|
void nsListControlFrame::FireOnInputAndOnChange() {
|
|
if (mComboboxFrame) {
|
|
// Return hit without changing anything
|
|
int32_t index = mComboboxFrame->UpdateRecentIndex(NS_SKIP_NOTIFY_INDEX);
|
|
if (index == NS_SKIP_NOTIFY_INDEX) {
|
|
return;
|
|
}
|
|
|
|
// See if the selection actually changed
|
|
if (index == GetSelectedIndex()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
RefPtr<Element> element = Element::FromNodeOrNull(mContent);
|
|
if (NS_WARN_IF(!element)) {
|
|
return;
|
|
}
|
|
// Dispatch the input event.
|
|
DebugOnly<nsresult> rvIgnored = nsContentUtils::DispatchInputEvent(element);
|
|
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
|
|
"Failed to dispatch input event");
|
|
|
|
// Dispatch the change event.
|
|
nsContentUtils::DispatchTrustedEvent(element->OwnerDoc(), element,
|
|
u"change"_ns, CanBubble::eYes,
|
|
Cancelable::eNo);
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsListControlFrame::OnSetSelectedIndex(int32_t aOldIndex, int32_t aNewIndex) {
|
|
if (mComboboxFrame) {
|
|
// UpdateRecentIndex with NS_SKIP_NOTIFY_INDEX, so that we won't fire an
|
|
// onchange event for this setting of selectedIndex.
|
|
mComboboxFrame->UpdateRecentIndex(NS_SKIP_NOTIFY_INDEX);
|
|
}
|
|
|
|
AutoWeakFrame weakFrame(this);
|
|
ScrollToIndex(aNewIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
mStartSelectionIndex = aNewIndex;
|
|
mEndSelectionIndex = aNewIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent();
|
|
#endif
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// End nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult nsListControlFrame::SetFormProperty(nsAtom* aName,
|
|
const nsAString& aValue) {
|
|
if (nsGkAtoms::selected == aName) {
|
|
return NS_ERROR_INVALID_ARG; // Selected is readonly according to spec.
|
|
} else if (nsGkAtoms::selectedindex == aName) {
|
|
// You shouldn't be calling me for this!!!
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
// We should be told about selectedIndex by the DOM element through
|
|
// OnOptionSelected
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsListControlFrame::AboutToDropDown() {
|
|
NS_ASSERTION(IsInDropDownMode(),
|
|
"AboutToDropDown called without being in dropdown mode");
|
|
|
|
// Our widget doesn't get invalidated on changes to the rest of the document,
|
|
// so compute and store this color at the start of a dropdown so we don't
|
|
// get weird painting behaviour.
|
|
// We start looking for backgrounds above the combobox frame to avoid
|
|
// duplicating the combobox frame's background and compose each background
|
|
// color we find underneath until we have an opaque color, or run out of
|
|
// backgrounds. We compose with the PresContext default background color,
|
|
// which is always opaque, in case we don't end up with an opaque color.
|
|
// This gives us a very poor approximation of translucency.
|
|
nsIFrame* comboboxFrame = do_QueryFrame(mComboboxFrame);
|
|
nsIFrame* ancestor = comboboxFrame->GetParent();
|
|
mLastDropdownBackstopColor = NS_RGBA(0, 0, 0, 0);
|
|
while (NS_GET_A(mLastDropdownBackstopColor) < 255 && ancestor) {
|
|
ComputedStyle* context = ancestor->Style();
|
|
mLastDropdownBackstopColor =
|
|
NS_ComposeColors(context->StyleBackground()->BackgroundColor(context),
|
|
mLastDropdownBackstopColor);
|
|
ancestor = ancestor->GetParent();
|
|
}
|
|
mLastDropdownBackstopColor = NS_ComposeColors(
|
|
PresContext()->DefaultBackgroundColor(), mLastDropdownBackstopColor);
|
|
|
|
if (mIsAllContentHere && mIsAllFramesHere && mHasBeenInitialized) {
|
|
AutoWeakFrame weakFrame(this);
|
|
ScrollToIndex(GetSelectedIndex());
|
|
if (!weakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent(); // Inform assistive tech what got focus
|
|
#endif
|
|
}
|
|
mItemSelectionStarted = false;
|
|
mForceSelection = false;
|
|
}
|
|
|
|
// We are about to be rolledup from the outside (ComboboxFrame)
|
|
void nsListControlFrame::AboutToRollup() {
|
|
// We've been updating the combobox with the keyboard up until now, but not
|
|
// with the mouse. The problem is, even with mouse selection, we are
|
|
// updating the <select>. So if the mouse goes over an option just before
|
|
// he leaves the box and clicks, that's what the <select> will show.
|
|
//
|
|
// To deal with this we say "whatever is in the combobox is canonical."
|
|
// - IF the combobox is different from the current selected index, we
|
|
// reset the index.
|
|
|
|
if (IsInDropDownMode()) {
|
|
ComboboxFinish(
|
|
mComboboxFrame->GetIndexOfDisplayArea()); // might destroy us
|
|
}
|
|
}
|
|
|
|
void nsListControlFrame::DidReflow(nsPresContext* aPresContext,
|
|
const ReflowInput* aReflowInput) {
|
|
bool wasInterrupted = !mHasPendingInterruptAtStartOfReflow &&
|
|
aPresContext->HasPendingInterrupt();
|
|
|
|
nsHTMLScrollFrame::DidReflow(aPresContext, aReflowInput);
|
|
|
|
if (mNeedToReset && !wasInterrupted) {
|
|
mNeedToReset = false;
|
|
// Suppress scrolling to the selected element if we restored
|
|
// scroll history state AND the list contents have not changed
|
|
// since we loaded all the children AND nothing else forced us
|
|
// to scroll by calling ResetList(true). The latter two conditions
|
|
// are folded into mPostChildrenLoadedReset.
|
|
//
|
|
// The idea is that we want scroll history restoration to trump ResetList
|
|
// scrolling to the selected element, when the ResetList was probably only
|
|
// caused by content loading normally.
|
|
ResetList(!DidHistoryRestore() || mPostChildrenLoadedReset);
|
|
}
|
|
|
|
mHasPendingInterruptAtStartOfReflow = false;
|
|
}
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
nsresult nsListControlFrame::GetFrameName(nsAString& aResult) const {
|
|
return MakeFrameName(u"ListControl"_ns, aResult);
|
|
}
|
|
#endif
|
|
|
|
nscoord nsListControlFrame::GetBSizeOfARow() { return BSizeOfARow(); }
|
|
|
|
bool nsListControlFrame::IsOptionInteractivelySelectable(int32_t aIndex) const {
|
|
if (HTMLSelectElement* sel = HTMLSelectElement::FromNode(mContent)) {
|
|
if (HTMLOptionElement* item = sel->Item(aIndex)) {
|
|
return IsOptionInteractivelySelectable(sel, item);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool nsListControlFrame::IsOptionInteractivelySelectable(
|
|
HTMLSelectElement* aSelect, HTMLOptionElement* aOption) {
|
|
return !aSelect->IsOptionDisabled(aOption) && aOption->GetPrimaryFrame();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// helper
|
|
//----------------------------------------------------------------------
|
|
bool nsListControlFrame::IsLeftButton(dom::Event* aMouseEvent) {
|
|
// only allow selection with the left button
|
|
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
|
|
return mouseEvent && mouseEvent->Button() == 0;
|
|
}
|
|
|
|
nscoord nsListControlFrame::CalcFallbackRowBSize(float aFontSizeInflation) {
|
|
RefPtr<nsFontMetrics> fontMet =
|
|
nsLayoutUtils::GetFontMetricsForFrame(this, aFontSizeInflation);
|
|
return fontMet->MaxHeight();
|
|
}
|
|
|
|
nscoord nsListControlFrame::CalcIntrinsicBSize(nscoord aBSizeOfARow,
|
|
int32_t aNumberOfOptions) {
|
|
MOZ_ASSERT(!IsInDropDownMode(),
|
|
"Shouldn't be in dropdown mode when we call this");
|
|
|
|
dom::HTMLSelectElement* select =
|
|
dom::HTMLSelectElement::FromNodeOrNull(mContent);
|
|
if (select) {
|
|
mNumDisplayRows = select->Size();
|
|
} else {
|
|
mNumDisplayRows = 1;
|
|
}
|
|
|
|
if (mNumDisplayRows < 1) {
|
|
mNumDisplayRows = 4;
|
|
}
|
|
|
|
return mNumDisplayRows * aBSizeOfARow;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIDOMMouseListener
|
|
//----------------------------------------------------------------------
|
|
nsresult nsListControlFrame::MouseUp(dom::Event* aMouseEvent) {
|
|
NS_ASSERTION(aMouseEvent != nullptr, "aMouseEvent is null.");
|
|
|
|
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
|
|
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_FAILURE);
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
mButtonDown = false;
|
|
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// only allow selection with the left button
|
|
// if a right button click is on the combobox itself
|
|
// or on the select when in listbox mode, then let the click through
|
|
if (!IsLeftButton(aMouseEvent)) {
|
|
if (IsInDropDownMode()) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
} else {
|
|
CaptureMouseEvents(false);
|
|
return NS_OK;
|
|
}
|
|
CaptureMouseEvents(false);
|
|
return NS_ERROR_FAILURE; // means consume event
|
|
} else {
|
|
CaptureMouseEvents(false);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
const nsStyleVisibility* vis = StyleVisibility();
|
|
|
|
if (!vis->IsVisible()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (IsInDropDownMode()) {
|
|
// XXX This is a bit of a hack, but.....
|
|
// But the idea here is to make sure you get an "onclick" event when you
|
|
// mouse down on the select and the drag over an option and let go And then
|
|
// NOT get an "onclick" event when when you click down on the select and
|
|
// then up outside of the select the EventStateManager tracks the content of
|
|
// the mouse down and the mouse up to make sure they are the same, and the
|
|
// onclick is sent in the PostHandleEvent depeneding on whether the
|
|
// clickCount is non-zero. So we cheat here by either setting or unsetting
|
|
// the clcikCount in the native event so the right thing happens for the
|
|
// onclick event
|
|
WidgetMouseEvent* mouseEvent =
|
|
aMouseEvent->WidgetEventPtr()->AsMouseEvent();
|
|
|
|
int32_t selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// If it's not selectable, disallow the click and leave.
|
|
if (!IsOptionInteractivelySelectable(selectedIndex)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
CaptureMouseEvents(false);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (kNothingSelected != selectedIndex) {
|
|
AutoWeakFrame weakFrame(this);
|
|
ComboboxFinish(selectedIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
FireOnInputAndOnChange();
|
|
}
|
|
|
|
mouseEvent->mClickCount = 1;
|
|
} else {
|
|
// the click was out side of the select or its dropdown
|
|
mouseEvent->mClickCount =
|
|
IgnoreMouseEventForSelection(aMouseEvent) ? 1 : 0;
|
|
}
|
|
} else {
|
|
CaptureMouseEvents(false);
|
|
// Notify
|
|
if (mChangesSinceDragStart) {
|
|
// reset this so that future MouseUps without a prior MouseDown
|
|
// won't fire onchange
|
|
mChangesSinceDragStart = false;
|
|
FireOnInputAndOnChange();
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsListControlFrame::UpdateInListState(dom::Event* aEvent) {
|
|
if (!mComboboxFrame || !mComboboxFrame->IsDroppedDown()) return;
|
|
|
|
nsPoint pt = nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aEvent, this);
|
|
nsRect borderInnerEdge = GetScrollPortRect();
|
|
if (pt.y >= borderInnerEdge.y && pt.y < borderInnerEdge.YMost()) {
|
|
mItemSelectionStarted = true;
|
|
}
|
|
}
|
|
|
|
bool nsListControlFrame::IgnoreMouseEventForSelection(dom::Event* aEvent) {
|
|
if (!mComboboxFrame) return false;
|
|
|
|
// Our DOM listener does get called when the dropdown is not
|
|
// showing, because it listens to events on the SELECT element
|
|
if (!mComboboxFrame->IsDroppedDown()) return true;
|
|
|
|
return !mItemSelectionStarted;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
void nsListControlFrame::FireMenuItemActiveEvent() {
|
|
if (mFocused != this && !IsInDropDownMode()) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> optionContent = GetCurrentOption();
|
|
if (!optionContent) {
|
|
return;
|
|
}
|
|
|
|
FireDOMEvent(u"DOMMenuItemActive"_ns, optionContent);
|
|
}
|
|
#endif
|
|
|
|
nsresult nsListControlFrame::GetIndexFromDOMEvent(dom::Event* aMouseEvent,
|
|
int32_t& aCurIndex) {
|
|
if (IgnoreMouseEventForSelection(aMouseEvent)) return NS_ERROR_FAILURE;
|
|
|
|
if (PresShell::GetCapturingContent() != mContent) {
|
|
// If we're not capturing, then ignore movement in the border
|
|
nsPoint pt =
|
|
nsLayoutUtils::GetDOMEventCoordinatesRelativeTo(aMouseEvent, this);
|
|
nsRect borderInnerEdge = GetScrollPortRect();
|
|
if (!borderInnerEdge.Contains(pt)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
RefPtr<dom::HTMLOptionElement> option;
|
|
for (nsCOMPtr<nsIContent> content =
|
|
PresContext()->EventStateManager()->GetEventTargetContent(nullptr);
|
|
content && !option; content = content->GetParent()) {
|
|
option = dom::HTMLOptionElement::FromNode(content);
|
|
}
|
|
|
|
if (option) {
|
|
aCurIndex = option->Index();
|
|
MOZ_ASSERT(aCurIndex >= 0);
|
|
return NS_OK;
|
|
}
|
|
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
static bool FireShowDropDownEvent(nsIContent* aContent, bool aShow,
|
|
bool aIsSourceTouchEvent) {
|
|
if (ShouldFireDropDownEvent()) {
|
|
nsString eventName;
|
|
if (aShow) {
|
|
eventName = aIsSourceTouchEvent ? u"mozshowdropdown-sourcetouch"_ns
|
|
: u"mozshowdropdown"_ns;
|
|
} else {
|
|
eventName = u"mozhidedropdown"_ns;
|
|
}
|
|
nsContentUtils::DispatchChromeEvent(aContent->OwnerDoc(), aContent,
|
|
eventName, CanBubble::eYes,
|
|
Cancelable::eNo);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsresult nsListControlFrame::MouseDown(dom::Event* aMouseEvent) {
|
|
NS_ASSERTION(aMouseEvent != nullptr, "aMouseEvent is null.");
|
|
|
|
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
|
|
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_FAILURE);
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// only allow selection with the left button
|
|
// if a right button click is on the combobox itself
|
|
// or on the select when in listbox mode, then let the click through
|
|
if (!IsLeftButton(aMouseEvent)) {
|
|
if (IsInDropDownMode()) {
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
aMouseEvent->PreventDefault();
|
|
aMouseEvent->StopPropagation();
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_FAILURE; // means consume event
|
|
} else {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
int32_t selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Handle Like List
|
|
mButtonDown = true;
|
|
CaptureMouseEvents(true);
|
|
AutoWeakFrame weakFrame(this);
|
|
bool change =
|
|
HandleListSelection(aMouseEvent, selectedIndex); // might destroy us
|
|
if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
mChangesSinceDragStart = change;
|
|
} else {
|
|
// NOTE: the combo box is responsible for dropping it down
|
|
if (mComboboxFrame) {
|
|
// Ignore the click that occurs on the option element when one is
|
|
// selected from the parent process popup.
|
|
if (mComboboxFrame->IsOpenInParentProcess()) {
|
|
nsCOMPtr<nsIContent> econtent =
|
|
do_QueryInterface(aMouseEvent->GetTarget());
|
|
HTMLOptionElement* option = HTMLOptionElement::FromNodeOrNull(econtent);
|
|
if (option) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
uint16_t inputSource = mouseEvent->MozInputSource();
|
|
bool isSourceTouchEvent =
|
|
inputSource == MouseEvent_Binding::MOZ_SOURCE_TOUCH;
|
|
if (FireShowDropDownEvent(
|
|
mContent, !mComboboxFrame->IsDroppedDownOrHasParentPopup(),
|
|
isSourceTouchEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!IgnoreMouseEventForSelection(aMouseEvent)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsComboboxControlFrame::ToolkitHasNativePopup()) {
|
|
bool isDroppedDown = mComboboxFrame->IsDroppedDown();
|
|
nsIFrame* comboFrame = do_QueryFrame(mComboboxFrame);
|
|
AutoWeakFrame weakFrame(comboFrame);
|
|
mComboboxFrame->ShowDropDown(!isDroppedDown);
|
|
if (!weakFrame.IsAlive()) return NS_OK;
|
|
if (isDroppedDown) {
|
|
CaptureMouseEvents(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsListControlFrame::MouseMove(dom::Event* aMouseEvent) {
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
|
|
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_FAILURE);
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
if (IsInDropDownMode()) {
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
int32_t selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
PerformSelection(selectedIndex, false, false); // might destroy us
|
|
}
|
|
}
|
|
} else { // XXX - temporary until we get drag events
|
|
if (mButtonDown) {
|
|
return DragMove(aMouseEvent); // might destroy us
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsListControlFrame::DragMove(dom::Event* aMouseEvent) {
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
|
|
UpdateInListState(aMouseEvent);
|
|
|
|
if (!IsInDropDownMode()) {
|
|
int32_t selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Don't waste cycles if we already dragged over this item
|
|
if (selectedIndex == mEndSelectionIndex) {
|
|
return NS_OK;
|
|
}
|
|
MouseEvent* mouseEvent = aMouseEvent->AsMouseEvent();
|
|
NS_ASSERTION(mouseEvent, "aMouseEvent is not a MouseEvent!");
|
|
bool isControl;
|
|
#ifdef XP_MACOSX
|
|
isControl = mouseEvent->MetaKey();
|
|
#else
|
|
isControl = mouseEvent->CtrlKey();
|
|
#endif
|
|
AutoWeakFrame weakFrame(this);
|
|
// Turn SHIFT on when you are dragging, unless control is on.
|
|
bool wasChanged = PerformSelection(selectedIndex, !isControl, isControl);
|
|
if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
mChangesSinceDragStart = mChangesSinceDragStart || wasChanged;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Scroll helpers.
|
|
//----------------------------------------------------------------------
|
|
void nsListControlFrame::ScrollToIndex(int32_t aIndex) {
|
|
if (aIndex < 0) {
|
|
// XXX shouldn't we just do nothing if we're asked to scroll to
|
|
// kNothingSelected?
|
|
ScrollTo(nsPoint(0, 0), ScrollMode::Instant);
|
|
} else {
|
|
RefPtr<dom::HTMLOptionElement> option =
|
|
GetOption(AssertedCast<uint32_t>(aIndex));
|
|
if (option) {
|
|
ScrollToFrame(*option);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsListControlFrame::ScrollToFrame(dom::HTMLOptionElement& aOptElement) {
|
|
// otherwise we find the content's frame and scroll to it
|
|
if (nsIFrame* childFrame = aOptElement.GetPrimaryFrame()) {
|
|
RefPtr<mozilla::PresShell> presShell = PresShell();
|
|
presShell->ScrollFrameRectIntoView(
|
|
childFrame, nsRect(nsPoint(0, 0), childFrame->GetSize()), ScrollAxis(),
|
|
ScrollAxis(),
|
|
ScrollFlags::ScrollOverflowHidden |
|
|
ScrollFlags::ScrollFirstAncestorOnly);
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
// Ok, the entire idea of this routine is to move to the next item that
|
|
// is suppose to be selected. If the item is disabled then we search in
|
|
// the same direction looking for the next item to select. If we run off
|
|
// the end of the list then we start at the end of the list and search
|
|
// backwards until we get back to the original item or an enabled option
|
|
//
|
|
// aStartIndex - the index to start searching from
|
|
// aNewIndex - will get set to the new index if it finds one
|
|
// aNumOptions - the total number of options in the list
|
|
// aDoAdjustInc - the initial increment 1-n
|
|
// aDoAdjustIncNext - the increment used to search for the next enabled option
|
|
//
|
|
// the aDoAdjustInc could be a "1" for a single item or
|
|
// any number greater representing a page of items
|
|
//
|
|
void nsListControlFrame::AdjustIndexForDisabledOpt(int32_t aStartIndex,
|
|
int32_t& aNewIndex,
|
|
int32_t aNumOptions,
|
|
int32_t aDoAdjustInc,
|
|
int32_t aDoAdjustIncNext) {
|
|
// Cannot select anything if there is nothing to select
|
|
if (aNumOptions == 0) {
|
|
aNewIndex = kNothingSelected;
|
|
return;
|
|
}
|
|
|
|
// means we reached the end of the list and now we are searching backwards
|
|
bool doingReverse = false;
|
|
// lowest index in the search range
|
|
int32_t bottom = 0;
|
|
// highest index in the search range
|
|
int32_t top = aNumOptions;
|
|
|
|
// Start off keyboard options at selectedIndex if nothing else is defaulted to
|
|
//
|
|
// XXX Perhaps this should happen for mouse too, to start off shift click
|
|
// automatically in multiple ... to do this, we'd need to override
|
|
// OnOptionSelected and set mStartSelectedIndex if nothing is selected. Not
|
|
// sure of the effects, though, so I'm not doing it just yet.
|
|
int32_t startIndex = aStartIndex;
|
|
if (startIndex < bottom) {
|
|
startIndex = GetSelectedIndex();
|
|
}
|
|
int32_t newIndex = startIndex + aDoAdjustInc;
|
|
|
|
// make sure we start off in the range
|
|
if (newIndex < bottom) {
|
|
newIndex = 0;
|
|
} else if (newIndex >= top) {
|
|
newIndex = aNumOptions - 1;
|
|
}
|
|
|
|
while (1) {
|
|
// if the newIndex is selectable, we are golden, bail out
|
|
if (IsOptionInteractivelySelectable(newIndex)) {
|
|
break;
|
|
}
|
|
|
|
// it WAS disabled, so sart looking ahead for the next enabled option
|
|
newIndex += aDoAdjustIncNext;
|
|
|
|
// well, if we reach end reverse the search
|
|
if (newIndex < bottom) {
|
|
if (doingReverse) {
|
|
return; // if we are in reverse mode and reach the end bail out
|
|
} else {
|
|
// reset the newIndex to the end of the list we hit
|
|
// reverse the incrementer
|
|
// set the other end of the list to our original starting index
|
|
newIndex = bottom;
|
|
aDoAdjustIncNext = 1;
|
|
doingReverse = true;
|
|
top = startIndex;
|
|
}
|
|
} else if (newIndex >= top) {
|
|
if (doingReverse) {
|
|
return; // if we are in reverse mode and reach the end bail out
|
|
} else {
|
|
// reset the newIndex to the end of the list we hit
|
|
// reverse the incrementer
|
|
// set the other end of the list to our original starting index
|
|
newIndex = top - 1;
|
|
aDoAdjustIncNext = -1;
|
|
doingReverse = true;
|
|
bottom = startIndex;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Looks like we found one
|
|
aNewIndex = newIndex;
|
|
}
|
|
|
|
nsAString& nsListControlFrame::GetIncrementalString() {
|
|
if (sIncrementalString == nullptr) sIncrementalString = new nsString();
|
|
|
|
return *sIncrementalString;
|
|
}
|
|
|
|
void nsListControlFrame::Shutdown() {
|
|
delete sIncrementalString;
|
|
sIncrementalString = nullptr;
|
|
}
|
|
|
|
void nsListControlFrame::DropDownToggleKey(dom::Event* aKeyEvent) {
|
|
// Cocoa widgets do native popups, so don't try to show
|
|
// dropdowns there.
|
|
if (IsInDropDownMode() && !nsComboboxControlFrame::ToolkitHasNativePopup()) {
|
|
aKeyEvent->PreventDefault();
|
|
if (!mComboboxFrame->IsDroppedDown()) {
|
|
if (!FireShowDropDownEvent(mContent, true, false)) {
|
|
mComboboxFrame->ShowDropDown(true);
|
|
}
|
|
} else {
|
|
AutoWeakFrame weakFrame(this);
|
|
// mEndSelectionIndex is the last item that got selected.
|
|
ComboboxFinish(mEndSelectionIndex);
|
|
if (weakFrame.IsAlive()) {
|
|
FireOnInputAndOnChange();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult nsListControlFrame::KeyDown(dom::Event* aKeyEvent) {
|
|
MOZ_ASSERT(aKeyEvent, "aKeyEvent is null.");
|
|
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
AutoIncrementalSearchResetter incrementalSearchResetter;
|
|
|
|
if (aKeyEvent->DefaultPrevented()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
const WidgetKeyboardEvent* keyEvent =
|
|
aKeyEvent->WidgetEventPtr()->AsKeyboardEvent();
|
|
MOZ_ASSERT(keyEvent,
|
|
"DOM event must have WidgetKeyboardEvent for its internal event");
|
|
|
|
bool dropDownMenuOnUpDown;
|
|
bool dropDownMenuOnSpace;
|
|
#ifdef XP_MACOSX
|
|
dropDownMenuOnUpDown = IsInDropDownMode() && !mComboboxFrame->IsDroppedDown();
|
|
dropDownMenuOnSpace =
|
|
!keyEvent->IsAlt() && !keyEvent->IsControl() && !keyEvent->IsMeta();
|
|
#else
|
|
dropDownMenuOnUpDown = keyEvent->IsAlt();
|
|
dropDownMenuOnSpace = IsInDropDownMode() && !mComboboxFrame->IsDroppedDown();
|
|
#endif
|
|
bool withinIncrementalSearchTime =
|
|
keyEvent->mTime - gLastKeyTime <=
|
|
StaticPrefs::ui_menu_incremental_search_timeout();
|
|
if ((dropDownMenuOnUpDown &&
|
|
(keyEvent->mKeyCode == NS_VK_UP || keyEvent->mKeyCode == NS_VK_DOWN)) ||
|
|
(dropDownMenuOnSpace && keyEvent->mKeyCode == NS_VK_SPACE &&
|
|
!withinIncrementalSearchTime)) {
|
|
DropDownToggleKey(aKeyEvent);
|
|
if (keyEvent->DefaultPrevented()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
if (keyEvent->IsAlt()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// now make sure there are options or we are wasting our time
|
|
RefPtr<dom::HTMLOptionsCollection> options = GetOptions();
|
|
NS_ENSURE_TRUE(options, NS_ERROR_FAILURE);
|
|
|
|
uint32_t numOptions = options->Length();
|
|
|
|
// this is the new index to set
|
|
int32_t newIndex = kNothingSelected;
|
|
|
|
bool isControlOrMeta = (keyEvent->IsControl() || keyEvent->IsMeta());
|
|
// Don't try to handle multiple-select pgUp/pgDown in single-select lists.
|
|
if (isControlOrMeta && !GetMultiple() &&
|
|
(keyEvent->mKeyCode == NS_VK_PAGE_UP ||
|
|
keyEvent->mKeyCode == NS_VK_PAGE_DOWN)) {
|
|
return NS_OK;
|
|
}
|
|
if (isControlOrMeta &&
|
|
(keyEvent->mKeyCode == NS_VK_UP || keyEvent->mKeyCode == NS_VK_LEFT ||
|
|
keyEvent->mKeyCode == NS_VK_DOWN || keyEvent->mKeyCode == NS_VK_RIGHT ||
|
|
keyEvent->mKeyCode == NS_VK_HOME || keyEvent->mKeyCode == NS_VK_END)) {
|
|
// Don't go into multiple-select mode unless this list can handle it.
|
|
isControlOrMeta = mControlSelectMode = GetMultiple();
|
|
} else if (keyEvent->mKeyCode != NS_VK_SPACE) {
|
|
mControlSelectMode = false;
|
|
}
|
|
|
|
// We should not change the selection if the popup is "opened
|
|
// in the parent process" (even when we're in single-process mode).
|
|
bool shouldSelectByKey =
|
|
!mComboboxFrame || !mComboboxFrame->IsOpenInParentProcess();
|
|
|
|
switch (keyEvent->mKeyCode) {
|
|
case NS_VK_UP:
|
|
case NS_VK_LEFT:
|
|
if (shouldSelectByKey) {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
static_cast<int32_t>(numOptions), -1, -1);
|
|
}
|
|
break;
|
|
case NS_VK_DOWN:
|
|
case NS_VK_RIGHT:
|
|
if (shouldSelectByKey) {
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
static_cast<int32_t>(numOptions), 1, 1);
|
|
}
|
|
break;
|
|
case NS_VK_RETURN:
|
|
if (IsInDropDownMode()) {
|
|
if (mComboboxFrame->IsDroppedDown()) {
|
|
// If the select element is a dropdown style, Enter key should be
|
|
// consumed while the dropdown is open for security.
|
|
aKeyEvent->PreventDefault();
|
|
|
|
AutoWeakFrame weakFrame(this);
|
|
ComboboxFinish(mEndSelectionIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
FireOnInputAndOnChange();
|
|
return NS_OK;
|
|
}
|
|
|
|
// If this is single select listbox, Enter key doesn't cause anything.
|
|
if (!GetMultiple()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
newIndex = mEndSelectionIndex;
|
|
break;
|
|
case NS_VK_ESCAPE: {
|
|
// If the select element is a listbox style, Escape key causes nothing.
|
|
if (!IsInDropDownMode()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// We don't want to preventDefault for escape key if the dropdown
|
|
// popup is not shown.
|
|
// Need to do the check before AboutToRollup because AboutToRollup
|
|
// may update the dropdown flags.
|
|
bool doPreventDefault =
|
|
!mComboboxFrame || mComboboxFrame->IsDroppedDownOrHasParentPopup();
|
|
|
|
AboutToRollup();
|
|
// If the select element is a dropdown style, Escape key should be
|
|
// consumed everytime since Escape key may be pressed accidentally after
|
|
// the dropdown is closed by Escepe key.
|
|
if (doPreventDefault) {
|
|
aKeyEvent->PreventDefault();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
case NS_VK_PAGE_UP: {
|
|
if (shouldSelectByKey) {
|
|
int32_t itemsPerPage =
|
|
std::max(1, static_cast<int32_t>(mNumDisplayRows - 1));
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
static_cast<int32_t>(numOptions),
|
|
-itemsPerPage, -1);
|
|
}
|
|
break;
|
|
}
|
|
case NS_VK_PAGE_DOWN: {
|
|
if (shouldSelectByKey) {
|
|
int32_t itemsPerPage =
|
|
std::max(1, static_cast<int32_t>(mNumDisplayRows - 1));
|
|
AdjustIndexForDisabledOpt(mEndSelectionIndex, newIndex,
|
|
static_cast<int32_t>(numOptions),
|
|
itemsPerPage, 1);
|
|
}
|
|
break;
|
|
}
|
|
case NS_VK_HOME:
|
|
if (shouldSelectByKey) {
|
|
AdjustIndexForDisabledOpt(0, newIndex, static_cast<int32_t>(numOptions),
|
|
0, 1);
|
|
}
|
|
break;
|
|
case NS_VK_END:
|
|
if (shouldSelectByKey) {
|
|
AdjustIndexForDisabledOpt(static_cast<int32_t>(numOptions) - 1,
|
|
newIndex, static_cast<int32_t>(numOptions), 0,
|
|
-1);
|
|
}
|
|
break;
|
|
|
|
#if defined(XP_WIN)
|
|
case NS_VK_F4:
|
|
if (!isControlOrMeta) {
|
|
DropDownToggleKey(aKeyEvent);
|
|
}
|
|
return NS_OK;
|
|
#endif
|
|
|
|
default: // printable key will be handled by keypress event.
|
|
incrementalSearchResetter.Cancel();
|
|
return NS_OK;
|
|
}
|
|
|
|
aKeyEvent->PreventDefault();
|
|
|
|
// Actually process the new index and let the selection code
|
|
// do the scrolling for us
|
|
PostHandleKeyEvent(newIndex, 0, keyEvent->IsShift(), isControlOrMeta);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsListControlFrame::KeyPress(dom::Event* aKeyEvent) {
|
|
MOZ_ASSERT(aKeyEvent, "aKeyEvent is null.");
|
|
|
|
EventStates eventStates = mContent->AsElement()->State();
|
|
if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
AutoIncrementalSearchResetter incrementalSearchResetter;
|
|
|
|
const WidgetKeyboardEvent* keyEvent =
|
|
aKeyEvent->WidgetEventPtr()->AsKeyboardEvent();
|
|
MOZ_ASSERT(keyEvent,
|
|
"DOM event must have WidgetKeyboardEvent for its internal event");
|
|
|
|
// Select option with this as the first character
|
|
// XXX Not I18N compliant
|
|
|
|
// Don't do incremental search if the key event has already consumed.
|
|
if (keyEvent->DefaultPrevented()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (keyEvent->IsAlt()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// With some keyboard layout, space key causes non-ASCII space.
|
|
// So, the check in keydown event handler isn't enough, we need to check it
|
|
// again with keypress event.
|
|
if (keyEvent->mCharCode != ' ') {
|
|
mControlSelectMode = false;
|
|
}
|
|
|
|
bool isControlOrMeta = (keyEvent->IsControl() || keyEvent->IsMeta());
|
|
if (isControlOrMeta && keyEvent->mCharCode != ' ') {
|
|
return NS_OK;
|
|
}
|
|
|
|
// NOTE: If mKeyCode of keypress event is not 0, mCharCode is always 0.
|
|
// Therefore, all non-printable keys are not handled after this block.
|
|
if (!keyEvent->mCharCode) {
|
|
// Backspace key will delete the last char in the string. Otherwise,
|
|
// non-printable keypress should reset incremental search.
|
|
if (keyEvent->mKeyCode == NS_VK_BACK) {
|
|
incrementalSearchResetter.Cancel();
|
|
if (!GetIncrementalString().IsEmpty()) {
|
|
GetIncrementalString().Truncate(GetIncrementalString().Length() - 1);
|
|
}
|
|
aKeyEvent->PreventDefault();
|
|
} else {
|
|
// XXX When a select element has focus, even if the key causes nothing,
|
|
// it might be better to call preventDefault() here because nobody
|
|
// should expect one of other elements including chrome handles the
|
|
// key event.
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
incrementalSearchResetter.Cancel();
|
|
|
|
// We ate the key if we got this far.
|
|
aKeyEvent->PreventDefault();
|
|
|
|
// XXX Why don't we check/modify timestamp first?
|
|
|
|
// Incremental Search: if time elapsed is below
|
|
// ui.menu.incremental_search.timeout, append this keystroke to the search
|
|
// string we will use to find options and start searching at the current
|
|
// keystroke. Otherwise, Truncate the string if it's been a long time
|
|
// since our last keypress.
|
|
if (keyEvent->mTime - gLastKeyTime >
|
|
StaticPrefs::ui_menu_incremental_search_timeout()) {
|
|
// If this is ' ' and we are at the beginning of the string, treat it as
|
|
// "select this option" (bug 191543)
|
|
if (keyEvent->mCharCode == ' ') {
|
|
// Actually process the new index and let the selection code
|
|
// do the scrolling for us
|
|
PostHandleKeyEvent(mEndSelectionIndex, keyEvent->mCharCode,
|
|
keyEvent->IsShift(), isControlOrMeta);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
GetIncrementalString().Truncate();
|
|
}
|
|
|
|
gLastKeyTime = keyEvent->mTime;
|
|
|
|
// Append this keystroke to the search string.
|
|
char16_t uniChar = ToLowerCase(static_cast<char16_t>(keyEvent->mCharCode));
|
|
GetIncrementalString().Append(uniChar);
|
|
|
|
// See bug 188199, if all letters in incremental string are same, just try to
|
|
// match the first one
|
|
nsAutoString incrementalString(GetIncrementalString());
|
|
uint32_t charIndex = 1, stringLength = incrementalString.Length();
|
|
while (charIndex < stringLength &&
|
|
incrementalString[charIndex] == incrementalString[charIndex - 1]) {
|
|
charIndex++;
|
|
}
|
|
if (charIndex == stringLength) {
|
|
incrementalString.Truncate(1);
|
|
stringLength = 1;
|
|
}
|
|
|
|
// Determine where we're going to start reading the string
|
|
// If we have multiple characters to look for, we start looking *at* the
|
|
// current option. If we have only one character to look for, we start
|
|
// looking *after* the current option.
|
|
// Exception: if there is no option selected to start at, we always start
|
|
// *at* 0.
|
|
int32_t startIndex = GetSelectedIndex();
|
|
if (startIndex == kNothingSelected) {
|
|
startIndex = 0;
|
|
} else if (stringLength == 1) {
|
|
startIndex++;
|
|
}
|
|
|
|
// now make sure there are options or we are wasting our time
|
|
RefPtr<dom::HTMLOptionsCollection> options = GetOptions();
|
|
NS_ENSURE_TRUE(options, NS_ERROR_FAILURE);
|
|
|
|
uint32_t numOptions = options->Length();
|
|
|
|
AutoWeakFrame weakFrame(this);
|
|
for (uint32_t i = 0; i < numOptions; ++i) {
|
|
uint32_t index = (i + startIndex) % numOptions;
|
|
RefPtr<dom::HTMLOptionElement> optionElement = options->ItemAsOption(index);
|
|
if (!optionElement || !optionElement->GetPrimaryFrame()) {
|
|
continue;
|
|
}
|
|
|
|
nsAutoString text;
|
|
optionElement->GetRenderedLabel(text);
|
|
if (!StringBeginsWith(
|
|
nsContentUtils::TrimWhitespace<
|
|
nsContentUtils::IsHTMLWhitespaceOrNBSP>(text, false),
|
|
incrementalString, nsCaseInsensitiveStringComparator)) {
|
|
continue;
|
|
}
|
|
|
|
bool wasChanged =
|
|
PerformSelection(index, keyEvent->IsShift(), isControlOrMeta);
|
|
if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
if (!wasChanged) {
|
|
break;
|
|
}
|
|
|
|
// If UpdateSelection() returns false, that means the frame is no longer
|
|
// alive. We should stop doing anything.
|
|
if (!UpdateSelection()) {
|
|
return NS_OK;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void nsListControlFrame::PostHandleKeyEvent(int32_t aNewIndex,
|
|
uint32_t aCharCode, bool aIsShift,
|
|
bool aIsControlOrMeta) {
|
|
if (aNewIndex == kNothingSelected) {
|
|
int32_t focusedIndex = mEndSelectionIndex == kNothingSelected
|
|
? GetSelectedIndex()
|
|
: mEndSelectionIndex;
|
|
if (focusedIndex != kNothingSelected) {
|
|
return;
|
|
}
|
|
// No options are selected. In this case the focus ring is on the first
|
|
// non-disabled option (if any), so we should behave as if that's the option
|
|
// the user acted on.
|
|
if (!GetNonDisabledOptionFrom(0, &aNewIndex)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// If you hold control, but not shift, no key will actually do anything
|
|
// except space.
|
|
AutoWeakFrame weakFrame(this);
|
|
bool wasChanged = false;
|
|
if (aIsControlOrMeta && !aIsShift && aCharCode != ' ') {
|
|
mStartSelectionIndex = aNewIndex;
|
|
mEndSelectionIndex = aNewIndex;
|
|
InvalidateFocus();
|
|
ScrollToIndex(aNewIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent();
|
|
#endif
|
|
} else if (mControlSelectMode && aCharCode == ' ') {
|
|
wasChanged = SingleSelection(aNewIndex, true);
|
|
} else {
|
|
wasChanged = PerformSelection(aNewIndex, aIsShift, aIsControlOrMeta);
|
|
}
|
|
if (wasChanged && weakFrame.IsAlive()) {
|
|
// dispatch event, update combobox, etc.
|
|
UpdateSelection();
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* nsListEventListener
|
|
*****************************************************************************/
|
|
|
|
NS_IMPL_ISUPPORTS(nsListEventListener, nsIDOMEventListener)
|
|
|
|
NS_IMETHODIMP
|
|
nsListEventListener::HandleEvent(dom::Event* aEvent) {
|
|
if (!mFrame) return NS_OK;
|
|
|
|
nsAutoString eventType;
|
|
aEvent->GetType(eventType);
|
|
if (eventType.EqualsLiteral("keydown")) {
|
|
return mFrame->nsListControlFrame::KeyDown(aEvent);
|
|
}
|
|
if (eventType.EqualsLiteral("keypress")) {
|
|
return mFrame->nsListControlFrame::KeyPress(aEvent);
|
|
}
|
|
if (eventType.EqualsLiteral("mousedown")) {
|
|
if (aEvent->DefaultPrevented()) {
|
|
return NS_OK;
|
|
}
|
|
return mFrame->nsListControlFrame::MouseDown(aEvent);
|
|
}
|
|
if (eventType.EqualsLiteral("mouseup")) {
|
|
// Don't try to honor defaultPrevented here - it's not web compatible.
|
|
// (bug 1194733)
|
|
return mFrame->nsListControlFrame::MouseUp(aEvent);
|
|
}
|
|
if (eventType.EqualsLiteral("mousemove")) {
|
|
// I don't think we want to honor defaultPrevented on mousemove
|
|
// in general, and it would only prevent highlighting here.
|
|
return mFrame->nsListControlFrame::MouseMove(aEvent);
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("Unexpected eventType");
|
|
return NS_OK;
|
|
}
|