зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
3.9 KiB
C++
130 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "DetailsFrame.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/HTMLDetailsElement.h"
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#include "mozilla/dom/HTMLSummaryElement.h"
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#include "nsContentUtils.h"
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#include "nsPlaceholderFrame.h"
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#include "nsTextNode.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMPL_FRAMEARENA_HELPERS(DetailsFrame)
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NS_QUERYFRAME_HEAD(DetailsFrame)
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NS_QUERYFRAME_ENTRY(DetailsFrame)
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NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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DetailsFrame*
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NS_NewDetailsFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) DetailsFrame(aContext);
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}
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DetailsFrame::DetailsFrame(nsStyleContext* aContext)
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: nsBlockFrame(aContext)
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{
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}
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DetailsFrame::~DetailsFrame()
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{
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}
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nsIAtom*
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DetailsFrame::GetType() const
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{
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return nsGkAtoms::detailsFrame;
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}
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void
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DetailsFrame::SetInitialChildList(ChildListID aListID, nsFrameList& aChildList)
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{
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if (aListID == kPrincipalList) {
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auto* details = HTMLDetailsElement::FromContent(GetContent());
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bool isOpen = details->Open();
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if (isOpen) {
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// If details is open, the first summary needs to be rendered as if it is
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// the first child.
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for (nsIFrame* child : aChildList) {
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auto* realFrame = nsPlaceholderFrame::GetRealFrameFor(child);
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auto* cif = realFrame->GetContentInsertionFrame();
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if (cif && cif->GetType() == nsGkAtoms::summaryFrame) {
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// Take out the first summary frame and insert it to the beginning of
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// the list.
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aChildList.RemoveFrame(child);
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aChildList.InsertFrame(nullptr, nullptr, child);
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break;
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}
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}
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}
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#ifdef DEBUG
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nsIFrame* realFrame =
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nsPlaceholderFrame::GetRealFrameFor(isOpen ?
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aChildList.FirstChild() :
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aChildList.OnlyChild());
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MOZ_ASSERT(realFrame, "Principal list of details should not be empty!");
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nsIFrame* summaryFrame = realFrame->GetContentInsertionFrame();
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MOZ_ASSERT(summaryFrame->GetType() == nsGkAtoms::summaryFrame,
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"The frame should be summary frame!");
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#endif
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}
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nsBlockFrame::SetInitialChildList(aListID, aChildList);
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}
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void
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DetailsFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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nsContentUtils::DestroyAnonymousContent(&mDefaultSummary);
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nsBlockFrame::DestroyFrom(aDestructRoot);
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}
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nsresult
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DetailsFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
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{
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auto* details = HTMLDetailsElement::FromContent(GetContent());
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if (details->GetFirstSummary()) {
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return NS_OK;
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}
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// The <details> element lacks any direct <summary> child. Create a default
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// <summary> element as an anonymous content.
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nsNodeInfoManager* nodeInfoManager =
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GetContent()->NodeInfo()->NodeInfoManager();
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already_AddRefed<NodeInfo> nodeInfo =
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nodeInfoManager->GetNodeInfo(nsGkAtoms::summary, nullptr, kNameSpaceID_XHTML,
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nsIDOMNode::ELEMENT_NODE);
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mDefaultSummary = new HTMLSummaryElement(nodeInfo);
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nsXPIDLString defaultSummaryText;
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nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
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"DefaultSummary", defaultSummaryText);
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RefPtr<nsTextNode> description = new nsTextNode(nodeInfoManager);
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description->SetText(defaultSummaryText, false);
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mDefaultSummary->AppendChildTo(description, false);
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aElements.AppendElement(mDefaultSummary);
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return NS_OK;
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}
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void
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DetailsFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
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uint32_t aFilter)
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{
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if (mDefaultSummary) {
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aElements.AppendElement(mDefaultSummary);
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}
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}
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