зеркало из https://github.com/mozilla/gecko-dev.git
104 строки
3.0 KiB
C++
104 строки
3.0 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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#ifndef nsIContentInlines_h
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#define nsIContentInlines_h
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsContentUtils.h"
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#include "mozilla/dom/Element.h"
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inline bool
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nsIContent::IsInHTMLDocument() const
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{
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return OwnerDoc()->IsHTMLDocument();
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}
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inline bool
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nsIContent::IsInChromeDocument() const
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{
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return nsContentUtils::IsChromeDoc(OwnerDoc());
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}
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inline mozilla::dom::ShadowRoot* nsIContent::GetShadowRoot() const
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{
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if (!IsElement()) {
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return nullptr;
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}
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return AsElement()->FastGetShadowRoot();
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}
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template<nsIContent::FlattenedParentType Type>
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static inline bool FlattenedTreeParentIsParent(const nsINode* aNode)
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{
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// Try to short-circuit past the complicated and not-exactly-fast logic for
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// computing the flattened parent.
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//
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// WARNING! This logic is replicated in Servo to avoid out of line calls.
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// If you change the cases here, you need to change them in Servo as well!
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// Check if the node is an explicit child of an XBL-bound element, re-bound to
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// an XBL insertion point, or is a top-level element in a shadow tree, whose
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// flattened parent is the host element (as opposed to the actual parent which
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// is the shadow root).
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if (aNode->HasFlag(NODE_MAY_BE_IN_BINDING_MNGR | NODE_IS_IN_SHADOW_TREE)) {
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return false;
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}
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// Check if we want the flattened parent for style, and the node is the root
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// of a native anonymous content subtree parented to the document's root element.
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if (Type == nsIContent::eForStyle && aNode->HasFlag(NODE_IS_NATIVE_ANONYMOUS_ROOT) &&
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aNode->OwnerDoc()->GetRootElement() == aNode->GetParentNode())
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{
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return false;
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}
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// Check if the node is an explicit child of an element with a shadow root,
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// re-bound to an insertion point.
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nsIContent* parent = aNode->GetParent();
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if (parent && parent->GetShadowRoot()) {
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return false;
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}
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// Common case.
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return true;
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}
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template<nsIContent::FlattenedParentType Type>
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static inline nsINode*
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GetFlattenedTreeParentNode(const nsINode* aNode)
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{
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if (MOZ_LIKELY(FlattenedTreeParentIsParent<Type>(aNode))) {
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return aNode->GetParentNode();
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}
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MOZ_ASSERT(aNode->IsContent());
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return aNode->AsContent()->GetFlattenedTreeParentNodeInternal(Type);
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}
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inline nsINode*
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nsINode::GetFlattenedTreeParentNode() const
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{
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return ::GetFlattenedTreeParentNode<nsIContent::eNotForStyle>(this);
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}
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inline nsIContent*
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nsIContent::GetFlattenedTreeParent() const
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{
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nsINode* parent = GetFlattenedTreeParentNode();
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return (parent && parent->IsContent()) ? parent->AsContent() : nullptr;
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}
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inline nsINode*
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nsINode::GetFlattenedTreeParentNodeForStyle() const
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{
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return ::GetFlattenedTreeParentNode<nsIContent::eForStyle>(this);
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}
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#endif // nsIContentInlines_h
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