gecko-dev/dom/base/nsIContentInlines.h

122 строки
3.4 KiB
C++

/* -*- 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/. */
#ifndef nsIContentInlines_h
#define nsIContentInlines_h
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsContentUtils.h"
#include "nsIAtom.h"
#include "mozilla/dom/Element.h"
inline bool
nsIContent::IsInHTMLDocument() const
{
return OwnerDoc()->IsHTMLDocument();
}
inline bool
nsIContent::IsInChromeDocument() const
{
return nsContentUtils::IsChromeDoc(OwnerDoc());
}
inline mozilla::dom::ShadowRoot* nsIContent::GetShadowRoot() const
{
if (!IsElement()) {
return nullptr;
}
return AsElement()->FastGetShadowRoot();
}
template<nsIContent::FlattenedParentType Type>
static inline bool FlattenedTreeParentIsParent(const nsINode* aNode)
{
// Try to short-circuit past the complicated and not-exactly-fast logic for
// computing the flattened parent.
//
// WARNING! This logic is replicated in Servo to avoid out of line calls.
// If you change the cases here, you need to change them in Servo as well!
// Check if the node is an explicit child of an XBL-bound element, re-bound to
// an XBL insertion point, or is a top-level element in a shadow tree, whose
// flattened parent is the host element (as opposed to the actual parent which
// is the shadow root).
if (aNode->HasFlag(NODE_MAY_BE_IN_BINDING_MNGR | NODE_IS_IN_SHADOW_TREE)) {
return false;
}
// Check if we want the flattened parent for style, and the node is the root
// of a native anonymous content subtree parented to the document's root element.
if (Type == nsIContent::eForStyle && aNode->HasFlag(NODE_IS_NATIVE_ANONYMOUS_ROOT) &&
aNode->OwnerDoc()->GetRootElement() == aNode->GetParentNode())
{
return false;
}
// Check if the node is an explicit child of an element with a shadow root,
// re-bound to an insertion point.
nsIContent* parent = aNode->GetParent();
if (parent && parent->GetShadowRoot()) {
return false;
}
// Common case.
return true;
}
template<nsIContent::FlattenedParentType Type>
static inline nsINode*
GetFlattenedTreeParentNode(const nsINode* aNode)
{
if (MOZ_LIKELY(FlattenedTreeParentIsParent<Type>(aNode))) {
return aNode->GetParentNode();
}
MOZ_ASSERT(aNode->IsContent());
return aNode->AsContent()->GetFlattenedTreeParentNodeInternal(Type);
}
inline nsINode*
nsINode::GetFlattenedTreeParentNode() const
{
return ::GetFlattenedTreeParentNode<nsIContent::eNotForStyle>(this);
}
inline nsIContent*
nsIContent::GetFlattenedTreeParent() const
{
nsINode* parent = GetFlattenedTreeParentNode();
return (parent && parent->IsContent()) ? parent->AsContent() : nullptr;
}
inline bool
nsIContent::IsEventAttributeName(nsIAtom* aName)
{
const char16_t* name = aName->GetUTF16String();
if (name[0] != 'o' || name[1] != 'n') {
return false;
}
return IsEventAttributeNameInternal(aName);
}
inline nsINode*
nsINode::GetFlattenedTreeParentNodeForStyle() const
{
return ::GetFlattenedTreeParentNode<nsIContent::eForStyle>(this);
}
inline bool
nsINode::NodeOrAncestorHasDirAuto() const
{
return AncestorHasDirAuto() || (IsElement() && AsElement()->HasDirAuto());
}
#endif // nsIContentInlines_h