зеркало из https://github.com/mozilla/gecko-dev.git
94 строки
3.3 KiB
C++
94 строки
3.3 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 "nsLegendFrame.h"
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#include "mozilla/dom/HTMLLegendElement.h"
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#include "mozilla/PresShell.h"
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#include "ComputedStyle.h"
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#include "nsIContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsAttrValueInlines.h"
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#include "nsHTMLParts.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsCheckboxRadioFrame.h"
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#include "WritingModes.h"
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using namespace mozilla;
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nsIFrame* NS_NewLegendFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
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#ifdef DEBUG
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const nsStyleDisplay* disp = aStyle->StyleDisplay();
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NS_ASSERTION(!disp->IsAbsolutelyPositionedStyle() && !disp->IsFloatingStyle(),
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"Legends should not be positioned and should not float");
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#endif
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nsIFrame* f =
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new (aPresShell) nsLegendFrame(aStyle, aPresShell->GetPresContext());
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f->AddStateBits(NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS);
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return f;
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsLegendFrame)
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void nsLegendFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
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nsBlockFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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NS_QUERYFRAME_HEAD(nsLegendFrame)
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NS_QUERYFRAME_ENTRY(nsLegendFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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void nsLegendFrame::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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DO_GLOBAL_REFLOW_COUNT("nsLegendFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
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MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
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if (mState & NS_FRAME_FIRST_REFLOW) {
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nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), true);
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}
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return nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowInput,
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aStatus);
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}
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dom::HTMLLegendElement::LegendAlignValue nsLegendFrame::GetLogicalAlign(
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WritingMode aCBWM) {
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using LegendAlignValue = dom::HTMLLegendElement::LegendAlignValue;
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auto* element = nsGenericHTMLElement::FromNode(mContent);
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if (!element) {
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return LegendAlignValue::InlineStart;
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}
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const nsAttrValue* attr = element->GetParsedAttr(nsGkAtoms::align);
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if (!attr || attr->Type() != nsAttrValue::eEnum) {
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return LegendAlignValue::InlineStart;
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}
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auto value = static_cast<LegendAlignValue>(attr->GetEnumValue());
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switch (value) {
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case LegendAlignValue::Left:
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return aCBWM.IsBidiLTR() ? LegendAlignValue::InlineStart
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: LegendAlignValue::InlineEnd;
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case LegendAlignValue::Right:
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return aCBWM.IsBidiLTR() ? LegendAlignValue::InlineEnd
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: LegendAlignValue::InlineStart;
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default:
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return value;
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}
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}
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#ifdef DEBUG_FRAME_DUMP
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nsresult nsLegendFrame::GetFrameName(nsAString& aResult) const {
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return MakeFrameName(NS_LITERAL_STRING("Legend"), aResult);
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}
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#endif
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