зеркало из https://github.com/mozilla/gecko-dev.git
135 строки
3.7 KiB
C++
135 строки
3.7 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 "DocumentOrShadowRoot.h"
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#include "mozilla/dom/StyleSheetList.h"
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#include "nsDocument.h"
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#include "nsFocusManager.h"
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namespace mozilla {
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namespace dom {
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DocumentOrShadowRoot::DocumentOrShadowRoot(mozilla::dom::ShadowRoot& aShadowRoot)
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: mAsNode(aShadowRoot)
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, mKind(Kind::ShadowRoot)
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{}
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DocumentOrShadowRoot::DocumentOrShadowRoot(nsIDocument& aDoc)
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: mAsNode(aDoc)
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, mKind(Kind::Document)
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{}
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StyleSheetList&
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DocumentOrShadowRoot::EnsureDOMStyleSheets()
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{
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if (!mDOMStyleSheets) {
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mDOMStyleSheets = new StyleSheetList(*this);
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}
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return *mDOMStyleSheets;
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}
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Element*
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DocumentOrShadowRoot::GetElementById(const nsAString& aElementId)
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{
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if (MOZ_UNLIKELY(aElementId.IsEmpty())) {
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nsContentUtils::ReportEmptyGetElementByIdArg(AsNode().OwnerDoc());
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return nullptr;
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}
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if (nsIdentifierMapEntry* entry = mIdentifierMap.GetEntry(aElementId)) {
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if (Element* el = entry->GetIdElement()) {
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return el;
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}
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}
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return nullptr;
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}
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already_AddRefed<nsContentList>
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DocumentOrShadowRoot::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
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const nsAString& aLocalName)
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{
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ErrorResult rv;
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RefPtr<nsContentList> list =
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GetElementsByTagNameNS(aNamespaceURI, aLocalName, rv);
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if (rv.Failed()) {
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return nullptr;
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}
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return list.forget();
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}
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already_AddRefed<nsContentList>
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DocumentOrShadowRoot::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
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const nsAString& aLocalName,
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mozilla::ErrorResult& aResult)
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{
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int32_t nameSpaceId = kNameSpaceID_Wildcard;
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if (!aNamespaceURI.EqualsLiteral("*")) {
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aResult =
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nsContentUtils::NameSpaceManager()->RegisterNameSpace(aNamespaceURI,
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nameSpaceId);
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if (aResult.Failed()) {
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return nullptr;
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}
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}
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NS_ASSERTION(nameSpaceId != kNameSpaceID_Unknown, "Unexpected namespace ID!");
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return NS_GetContentList(&AsNode(), nameSpaceId, aLocalName);
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}
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already_AddRefed<nsContentList>
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DocumentOrShadowRoot::GetElementsByClassName(const nsAString& aClasses)
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{
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return nsContentUtils::GetElementsByClassName(&AsNode(), aClasses);
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}
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nsIContent*
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DocumentOrShadowRoot::Retarget(nsIContent* aContent) const
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{
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for (nsIContent* cur = aContent;
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cur;
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cur = cur->GetContainingShadowHost()) {
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if (cur->SubtreeRoot() == &AsNode()) {
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return cur;
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}
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}
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return nullptr;
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}
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Element*
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DocumentOrShadowRoot::GetRetargetedFocusedElement()
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{
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if (nsCOMPtr<nsPIDOMWindowOuter> window = AsNode().OwnerDoc()->GetWindow()) {
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nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
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nsIContent* focusedContent =
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nsFocusManager::GetFocusedDescendant(window,
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nsFocusManager::eOnlyCurrentWindow,
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getter_AddRefs(focusedWindow));
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// be safe and make sure the element is from this document
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if (focusedContent && focusedContent->OwnerDoc() == AsNode().OwnerDoc()) {
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if (focusedContent->ChromeOnlyAccess()) {
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focusedContent = focusedContent->FindFirstNonChromeOnlyAccessContent();
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}
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if (focusedContent) {
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if (!nsDocument::IsShadowDOMEnabled(focusedContent)) {
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return focusedContent->AsElement();
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}
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if (nsIContent* retarget = Retarget(focusedContent)) {
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return retarget->AsElement();
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}
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}
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}
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}
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return nullptr;
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}
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}
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}
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