forked from mirrors/gecko-dev
da7fa43d4a
The underlying issue here is an invalidation bug with XUL layout. When a popup opens, we try to lay it out at full size, then post a reflow callback to constrain it. There's an intermediate step there where the popup might remain at full size, and the constraining operates directly on mRect, which isn't quite sound and doesn't update the scrollport of descendants. Make nsMenuPopupFrame inherit from nsBlockFrame instead, doing potentially two layout passes when constrained. This fixes the issue at hand, and removes XUL layout from menu popups, so it's a win-win. To make reasoning about it a bit easier, factor out a bunch of the XUL positioning code to be const. The mutation of mRect etc which was going on otherwise was pretty hard to reason about. Differential Revision: https://phabricator.services.mozilla.com/D170368
1211 lines
41 KiB
C++
1211 lines
41 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 "HTMLSelectEventListener.h"
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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 "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/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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// Static members
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nsListControlFrame* nsListControlFrame::mFocused = nullptr;
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//---------------------------------------------------------
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nsListControlFrame* 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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nsListControlFrame::nsListControlFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext)
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: nsHTMLScrollFrame(aStyle, aPresContext, kClassID, false),
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mMightNeedSecondPass(false),
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mHasPendingInterruptAtStartOfReflow(false),
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mForceSelection(false) {
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mChangesSinceDragStart = 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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}
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nsListControlFrame::~nsListControlFrame() = default;
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Maybe<nscoord> nsListControlFrame::GetNaturalBaselineBOffset(
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WritingMode aWM, BaselineSharingGroup aBaselineGroup) const {
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// Unlike scroll frames which we inherit from, we don't export a baseline.
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return Nothing{};
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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->Detach();
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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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nsHTMLScrollFrame::BuildDisplayList(aBuilder, aLists);
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}
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HTMLOptionElement* nsListControlFrame::GetCurrentOption() const {
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return mEventListener->GetCurrentOption();
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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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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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const auto* domOpt = HTMLOptionElement::FromNodeOrNull(focusedContent);
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const bool isSelected = domOpt && domOpt->Selected();
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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 =
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LookAndFeel::Color(isSelected ? LookAndFeel::ColorID::Selecteditemtext
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: LookAndFeel::ColorID::Selecteditem,
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this);
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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 (GetContainSizeAxes().mBContained ||
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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 in block axis, which has the same outcome for
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// 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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Maybe<nscoord> containISize = ContainIntrinsicISize();
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result = containISize ? *containISize
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: GetScrolledFrame()->GetPrefISize(aRenderingContext);
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LogicalMargin scrollbarSize(wm, GetDesiredScrollbarSizes());
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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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Maybe<nscoord> containISize = ContainIntrinsicISize();
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result = containISize ? *containISize
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: GetScrolledFrame()->GetMinISize(aRenderingContext);
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LogicalMargin scrollbarSize(wm, GetDesiredScrollbarSizes());
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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 (!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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MarkInReflow();
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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. 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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bool autoBSize = (aReflowInput.ComputedBSize() == NS_UNCONSTRAINEDSIZE);
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Maybe<nscoord> containBSize = ContainIntrinsicBSize(NS_UNCONSTRAINEDSIZE);
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bool usingContainBSize =
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autoBSize && containBSize && *containBSize != NS_UNCONSTRAINEDSIZE;
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mMightNeedSecondPass = [&] {
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if (!autoBSize) {
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// We're reflowing with a constrained computed block size -- just use that
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// block size.
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return false;
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}
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if (!IsSubtreeDirty() && !aReflowInput.ShouldReflowAllKids()) {
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// We're not dirty and have no dirty kids and shouldn't be reflowing all
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// kids. In this case, our cached max block size of a child is not going
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// to change.
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return false;
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}
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if (usingContainBSize) {
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// We're size-contained in the block axis. In this case the size of a row
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// doesn't depend on our children (it's the "fallback" size).
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return false;
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}
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// We might need to do a second pass. If we do our first reflow using our
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// cached max block size of a child, then compute the new max block size,
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// and it's the same as the old one, we might still skip it (see the
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// IsScrollbarUpdateSuppressed() check).
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return true;
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}();
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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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if (usingContainBSize) {
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state.SetComputedBSize(*containBSize);
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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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usingContainBSize,
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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 || usingContainBSize) {
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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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bool nsListControlFrame::ShouldPropagateComputedBSizeToScrolledContent() const {
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return true;
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}
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//---------------------------------------------------------
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nsContainerFrame* nsListControlFrame::GetContentInsertionFrame() {
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return GetOptionsContainer()->GetContentInsertionFrame();
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}
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//---------------------------------------------------------
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bool nsListControlFrame::ExtendedSelection(int32_t aStartIndex,
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int32_t aEndIndex, bool aClearAll) {
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return SetOptionsSelectedFromFrame(aStartIndex, aEndIndex, true, aClearAll);
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}
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//---------------------------------------------------------
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bool nsListControlFrame::SingleSelection(int32_t aClickedIndex,
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bool aDoToggle) {
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#ifdef ACCESSIBILITY
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nsCOMPtr<nsIContent> prevOption = mEventListener->GetCurrentOption();
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#endif
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bool wasChanged = false;
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// Get Current selection
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if (aDoToggle) {
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wasChanged = ToggleOptionSelectedFromFrame(aClickedIndex);
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} else {
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wasChanged =
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SetOptionsSelectedFromFrame(aClickedIndex, aClickedIndex, true, true);
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}
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AutoWeakFrame weakFrame(this);
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ScrollToIndex(aClickedIndex);
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if (!weakFrame.IsAlive()) {
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return wasChanged;
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}
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mStartSelectionIndex = aClickedIndex;
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mEndSelectionIndex = aClickedIndex;
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InvalidateFocus();
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#ifdef ACCESSIBILITY
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FireMenuItemActiveEvent(prevOption);
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#endif
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return wasChanged;
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}
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void nsListControlFrame::InitSelectionRange(int32_t aClickedIndex) {
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//
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// If nothing is selected, set the start selection depending on where
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// the user clicked and what the initial selection is:
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// - if the user clicked *before* selectedIndex, set the start index to
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// the end of the first contiguous selection.
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// - if the user clicked *after* the end of the first contiguous
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// selection, set the start index to selectedIndex.
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// - if the user clicked *within* the first contiguous selection, set the
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// start index to selectedIndex.
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// The last two rules, of course, boil down to the same thing: if the user
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// clicked >= selectedIndex, return selectedIndex.
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//
|
|
// 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;
|
|
for (nsIFrame* child : aFrame->PrincipalChildList()) {
|
|
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
|
|
nsCOMPtr<nsIContent> prevOption = GetCurrentOption();
|
|
#endif
|
|
mEndSelectionIndex = aClickedIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent(prevOption);
|
|
#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) {
|
|
if (aGrabMouseEvents) {
|
|
PresShell::SetCapturingContent(mContent, CaptureFlags::IgnoreAllowedState);
|
|
} else {
|
|
nsIContent* capturingContent = PresShell::GetCapturingContent();
|
|
if (capturingContent == mContent) {
|
|
// 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 == FrameChildListID::Principal) {
|
|
// First check to see if all the content has been added
|
|
mIsAllContentHere = mContent->IsDoneAddingChildren();
|
|
if (!mIsAllContentHere) {
|
|
mIsAllFramesHere = false;
|
|
mHasBeenInitialized = false;
|
|
}
|
|
}
|
|
nsHTMLScrollFrame::SetInitialChildList(aListID, std::move(aChildList));
|
|
}
|
|
|
|
HTMLSelectElement& nsListControlFrame::Select() const {
|
|
return *static_cast<HTMLSelectElement*>(GetContent());
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
void nsListControlFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) {
|
|
nsHTMLScrollFrame::Init(aContent, aParent, aPrevInFlow);
|
|
|
|
// 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 HTMLSelectEventListener(
|
|
Select(), HTMLSelectEventListener::SelectType::Listbox);
|
|
|
|
mStartSelectionIndex = kNothingSelected;
|
|
mEndSelectionIndex = kNothingSelected;
|
|
}
|
|
|
|
dom::HTMLOptionsCollection* nsListControlFrame::GetOptions() const {
|
|
return Select().Options();
|
|
}
|
|
|
|
dom::HTMLOptionElement* nsListControlFrame::GetOption(uint32_t aIndex) const {
|
|
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) {
|
|
mFocused = this;
|
|
} else {
|
|
mFocused = nullptr;
|
|
}
|
|
|
|
InvalidateFocus();
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
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 ? nsListControlFrame::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 (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) {
|
|
using OptionFlag = HTMLSelectElement::OptionFlag;
|
|
RefPtr<HTMLSelectElement> selectElement =
|
|
HTMLSelectElement::FromNode(mContent);
|
|
|
|
HTMLSelectElement::OptionFlags mask = OptionFlag::Notify;
|
|
if (mForceSelection) {
|
|
mask += OptionFlag::SetDisabled;
|
|
}
|
|
if (aValue) {
|
|
mask += OptionFlag::IsSelected;
|
|
}
|
|
if (aClearAll) {
|
|
mask += OptionFlag::ClearAll;
|
|
}
|
|
|
|
return selectElement->SetOptionsSelectedByIndex(aStartIndex, aEndIndex, mask);
|
|
}
|
|
|
|
bool nsListControlFrame::ToggleOptionSelectedFromFrame(int32_t aIndex) {
|
|
RefPtr<HTMLOptionElement> option = GetOption(static_cast<uint32_t>(aIndex));
|
|
NS_ENSURE_TRUE(option, false);
|
|
|
|
RefPtr<HTMLSelectElement> selectElement =
|
|
HTMLSelectElement::FromNode(mContent);
|
|
|
|
HTMLSelectElement::OptionFlags mask = HTMLSelectElement::OptionFlag::Notify;
|
|
if (!option->Selected()) {
|
|
mask += HTMLSelectElement::OptionFlag::IsSelected;
|
|
}
|
|
|
|
return selectElement->SetOptionsSelectedByIndex(aIndex, aIndex, mask);
|
|
}
|
|
|
|
// Dispatch event and such
|
|
bool nsListControlFrame::UpdateSelection() {
|
|
if (mIsAllFramesHere) {
|
|
// if it's a combobox, display the new text. Note that after
|
|
// FireOnInputAndOnChange we might be dead, as that can run script.
|
|
AutoWeakFrame weakFrame(this);
|
|
if (mIsAllContentHere) {
|
|
RefPtr listener = mEventListener;
|
|
listener->FireOnInputAndOnChange();
|
|
}
|
|
return weakFrame.IsAlive();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void)
|
|
nsListControlFrame::OnSetSelectedIndex(int32_t aOldIndex, int32_t aNewIndex) {
|
|
#ifdef ACCESSIBILITY
|
|
nsCOMPtr<nsIContent> prevOption = GetCurrentOption();
|
|
#endif
|
|
|
|
AutoWeakFrame weakFrame(this);
|
|
ScrollToIndex(aNewIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
mStartSelectionIndex = aNewIndex;
|
|
mEndSelectionIndex = aNewIndex;
|
|
InvalidateFocus();
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (aOldIndex != aNewIndex) {
|
|
FireMenuItemActiveEvent(prevOption);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// End nsISelectControlFrame
|
|
//----------------------------------------------------------------------
|
|
|
|
class AsyncReset final : public Runnable {
|
|
public:
|
|
AsyncReset(nsListControlFrame* aFrame, bool aScroll)
|
|
: Runnable("AsyncReset"), mFrame(aFrame), mScroll(aScroll) {}
|
|
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
|
|
if (mFrame.IsAlive()) {
|
|
static_cast<nsListControlFrame*>(mFrame.GetFrame())->ResetList(mScroll);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
WeakFrame mFrame;
|
|
bool mScroll;
|
|
};
|
|
|
|
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::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.
|
|
const bool scroll = !DidHistoryRestore() || mPostChildrenLoadedReset;
|
|
nsContentUtils::AddScriptRunner(new AsyncReset(this, scroll));
|
|
}
|
|
|
|
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 {
|
|
auto& select = Select();
|
|
if (HTMLOptionElement* item = select.Item(aIndex)) {
|
|
return IsOptionInteractivelySelectable(&select, item);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool nsListControlFrame::IsOptionInteractivelySelectable(
|
|
HTMLSelectElement* aSelect, HTMLOptionElement* aOption) {
|
|
return !aSelect->IsOptionDisabled(aOption) && aOption->GetPrimaryFrame();
|
|
}
|
|
|
|
nscoord nsListControlFrame::CalcFallbackRowBSize(float aFontSizeInflation) {
|
|
RefPtr<nsFontMetrics> fontMet =
|
|
nsLayoutUtils::GetFontMetricsForFrame(this, aFontSizeInflation);
|
|
return fontMet->MaxHeight();
|
|
}
|
|
|
|
nscoord nsListControlFrame::CalcIntrinsicBSize(nscoord aBSizeOfARow,
|
|
int32_t aNumberOfOptions) {
|
|
mNumDisplayRows = Select().Size();
|
|
if (mNumDisplayRows < 1) {
|
|
mNumDisplayRows = 4;
|
|
}
|
|
return mNumDisplayRows * aBSizeOfARow;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
void nsListControlFrame::FireMenuItemActiveEvent(nsIContent* aPreviousOption) {
|
|
if (mFocused != this) {
|
|
return;
|
|
}
|
|
|
|
nsIContent* optionContent = GetCurrentOption();
|
|
if (aPreviousOption == optionContent) {
|
|
// No change
|
|
return;
|
|
}
|
|
|
|
if (aPreviousOption) {
|
|
FireDOMEvent(u"DOMMenuItemInactive"_ns, aPreviousOption);
|
|
}
|
|
|
|
if (optionContent) {
|
|
FireDOMEvent(u"DOMMenuItemActive"_ns, optionContent);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsresult nsListControlFrame::GetIndexFromDOMEvent(dom::Event* aMouseEvent,
|
|
int32_t& aCurIndex) {
|
|
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;
|
|
}
|
|
|
|
nsresult nsListControlFrame::HandleLeftButtonMouseDown(
|
|
dom::Event* aMouseEvent) {
|
|
int32_t selectedIndex;
|
|
if (NS_SUCCEEDED(GetIndexFromDOMEvent(aMouseEvent, selectedIndex))) {
|
|
// Handle Like List
|
|
CaptureMouseEvents(true);
|
|
AutoWeakFrame weakFrame(this);
|
|
bool change =
|
|
HandleListSelection(aMouseEvent, selectedIndex); // might destroy us
|
|
if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
mChangesSinceDragStart = change;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsListControlFrame::HandleLeftButtonMouseUp(dom::Event* aMouseEvent) {
|
|
if (!StyleVisibility()->IsVisible()) {
|
|
return NS_OK;
|
|
}
|
|
// Notify
|
|
if (mChangesSinceDragStart) {
|
|
// reset this so that future MouseUps without a prior MouseDown
|
|
// won't fire onchange
|
|
mChangesSinceDragStart = false;
|
|
RefPtr listener = mEventListener;
|
|
listener->FireOnInputAndOnChange();
|
|
// Note that `this` may be dead now, as the above call runs script.
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsListControlFrame::DragMove(dom::Event* aMouseEvent) {
|
|
NS_ASSERTION(aMouseEvent, "aMouseEvent is null.");
|
|
|
|
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->ScrollFrameIntoView(childFrame, Nothing(), ScrollAxis(),
|
|
ScrollAxis(),
|
|
ScrollFlags::ScrollOverflowHidden |
|
|
ScrollFlags::ScrollFirstAncestorOnly);
|
|
}
|
|
}
|
|
|
|
void nsListControlFrame::UpdateSelectionAfterKeyEvent(
|
|
int32_t aNewIndex, uint32_t aCharCode, bool aIsShift, bool aIsControlOrMeta,
|
|
bool aIsControlSelectMode) {
|
|
// 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 != ' ') {
|
|
#ifdef ACCESSIBILITY
|
|
nsCOMPtr<nsIContent> prevOption = GetCurrentOption();
|
|
#endif
|
|
mStartSelectionIndex = aNewIndex;
|
|
mEndSelectionIndex = aNewIndex;
|
|
InvalidateFocus();
|
|
ScrollToIndex(aNewIndex);
|
|
if (!weakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
FireMenuItemActiveEvent(prevOption);
|
|
#endif
|
|
} else if (aIsControlSelectMode && aCharCode == ' ') {
|
|
wasChanged = SingleSelection(aNewIndex, true);
|
|
} else {
|
|
wasChanged = PerformSelection(aNewIndex, aIsShift, aIsControlOrMeta);
|
|
}
|
|
if (wasChanged && weakFrame.IsAlive()) {
|
|
// dispatch event, update combobox, etc.
|
|
UpdateSelection();
|
|
}
|
|
}
|