Source code

Revision control

Other Tools

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsLegendFrame.h"
#include "mozilla/dom/HTMLLegendElement.h"
#include "mozilla/PresShell.h"
#include "ComputedStyle.h"
#include "nsIContent.h"
#include "nsGenericHTMLElement.h"
#include "nsAttrValueInlines.h"
#include "nsHTMLParts.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsCheckboxRadioFrame.h"
#include "WritingModes.h"
using namespace mozilla;
nsIFrame* NS_NewLegendFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
#ifdef DEBUG
const nsStyleDisplay* disp = aStyle->StyleDisplay();
NS_ASSERTION(!disp->IsAbsolutelyPositionedStyle() && !disp->IsFloatingStyle(),
"Legends should not be positioned and should not float");
#endif
nsIFrame* f =
new (aPresShell) nsLegendFrame(aStyle, aPresShell->GetPresContext());
f->AddStateBits(NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS);
return f;
}
NS_IMPL_FRAMEARENA_HELPERS(nsLegendFrame)
void nsLegendFrame::DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) {
nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
nsBlockFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
}
NS_QUERYFRAME_HEAD(nsLegendFrame)
NS_QUERYFRAME_ENTRY(nsLegendFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
void nsLegendFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
DO_GLOBAL_REFLOW_COUNT("nsLegendFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
if (mState & NS_FRAME_FIRST_REFLOW) {
nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), true);
}
return nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowInput,
aStatus);
}
dom::HTMLLegendElement::LegendAlignValue nsLegendFrame::GetLogicalAlign(
WritingMode aCBWM) {
using LegendAlignValue = dom::HTMLLegendElement::LegendAlignValue;
auto* element = nsGenericHTMLElement::FromNode(mContent);
if (!element) {
return LegendAlignValue::InlineStart;
}
const nsAttrValue* attr = element->GetParsedAttr(nsGkAtoms::align);
if (!attr || attr->Type() != nsAttrValue::eEnum) {
return LegendAlignValue::InlineStart;
}
auto value = static_cast<LegendAlignValue>(attr->GetEnumValue());
switch (value) {
case LegendAlignValue::Left:
return aCBWM.IsBidiLTR() ? LegendAlignValue::InlineStart
: LegendAlignValue::InlineEnd;
case LegendAlignValue::Right:
return aCBWM.IsBidiLTR() ? LegendAlignValue::InlineEnd
: LegendAlignValue::InlineStart;
default:
return value;
}
}
#ifdef DEBUG_FRAME_DUMP
nsresult nsLegendFrame::GetFrameName(nsAString& aResult) const {
return MakeFrameName(u"Legend"_ns, aResult);
}
#endif