зеркало из https://github.com/mozilla/gecko-dev.git
142 строки
4.7 KiB
C++
142 строки
4.7 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 "DetailsFrame.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/PresShell.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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nsBlockFrame* NS_NewDetailsFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
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return new (aPresShell) DetailsFrame(aStyle, aPresShell->GetPresContext());
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}
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namespace mozilla {
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DetailsFrame::DetailsFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsBlockFrame(aStyle, aPresContext, kClassID) {}
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DetailsFrame::~DetailsFrame() = default;
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void DetailsFrame::SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList) {
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#ifdef DEBUG
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if (aListID == kPrincipalList) {
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CheckValidMainSummary(aChildList);
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}
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#endif
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nsBlockFrame::SetInitialChildList(aListID, aChildList);
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}
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#ifdef DEBUG
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bool DetailsFrame::CheckValidMainSummary(const nsFrameList& aFrameList) const {
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for (nsIFrame* child : aFrameList) {
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if (child->IsGeneratedContentFrame()) {
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continue;
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}
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HTMLSummaryElement* summary =
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HTMLSummaryElement::FromNode(child->GetContent());
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if (child == aFrameList.FirstChild()) {
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if (summary && summary->IsMainSummary()) {
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return true;
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} else if (child->GetContent() == GetContent()) {
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// The child frame's content is the same as our content, which means
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// it's a kind of wrapper frame. Descend into its child list to find
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// main summary.
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if (CheckValidMainSummary(child->PrincipalChildList())) {
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return true;
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}
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}
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} else {
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NS_ASSERTION(!summary || !summary->IsMainSummary(),
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"Rest of the children are either not summary element "
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"or are not the main summary!");
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}
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}
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return false;
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}
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#endif
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void DetailsFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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aPostDestroyData.AddAnonymousContent(mDefaultSummary.forget());
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nsBlockFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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nsresult DetailsFrame::CreateAnonymousContent(
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nsTArray<ContentInfo>& aElements) {
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auto* details = HTMLDetailsElement::FromNode(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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RefPtr<NodeInfo> nodeInfo = nodeInfoManager->GetNodeInfo(
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nsGkAtoms::summary, nullptr, kNameSpaceID_XHTML, nsINode::ELEMENT_NODE);
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mDefaultSummary = new (nodeInfoManager) HTMLSummaryElement(nodeInfo.forget());
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nsAutoString defaultSummaryText;
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nsContentUtils::GetMaybeLocalizedString(
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nsContentUtils::eFORMS_PROPERTIES, "DefaultSummary",
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GetContent()->OwnerDoc(), defaultSummaryText);
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RefPtr<nsTextNode> description =
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new (nodeInfoManager) 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 DetailsFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
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uint32_t aFilter) {
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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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bool DetailsFrame::HasMainSummaryFrame(nsIFrame* aSummaryFrame) {
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const ChildListIDs flowLists = {kPrincipalList, kOverflowList};
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for (nsIFrame* frag = this; frag; frag = frag->GetNextInFlow()) {
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for (const auto& [list, listID] : frag->ChildLists()) {
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if (!flowLists.contains(listID)) {
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continue;
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}
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for (nsIFrame* child : list) {
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child = nsPlaceholderFrame::GetRealFrameFor(child);
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// We skip any non-primary frames such as a list-style-position:inside
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// bullet frame for the <details> itself.
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if (!child->IsGeneratedContentFrame()) {
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return aSummaryFrame == child;
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}
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}
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}
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}
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return false;
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}
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} // namespace mozilla
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