gecko-dev/dom/base/DocumentFragment.h

128 строки
3.6 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 mozilla_dom_DocumentFragment_h__
#define mozilla_dom_DocumentFragment_h__
#include "mozilla/Attributes.h"
#include "mozilla/dom/BorrowedAttrInfo.h"
#include "mozilla/dom/FragmentOrElement.h"
#include "nsIDOMNode.h"
#include "nsStringFwd.h"
class nsAtom;
class nsIDocument;
class nsIContent;
namespace mozilla {
namespace dom {
class Element;
class DocumentFragment : public FragmentOrElement,
public nsIDOMNode
{
private:
void Init()
{
MOZ_ASSERT(mNodeInfo->NodeType() == DOCUMENT_FRAGMENT_NODE &&
mNodeInfo->Equals(nsGkAtoms::documentFragmentNodeName,
kNameSpaceID_None),
"Bad NodeType in aNodeInfo");
}
public:
using FragmentOrElement::GetFirstChild;
using nsINode::QuerySelector;
using nsINode::QuerySelectorAll;
// Make sure bindings can see our superclass' protected GetElementById method.
using nsINode::GetElementById;
// nsISupports
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DocumentFragment, FragmentOrElement)
explicit DocumentFragment(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: FragmentOrElement(aNodeInfo), mHost(nullptr)
{
Init();
}
explicit DocumentFragment(nsNodeInfoManager* aNodeInfoManager)
: FragmentOrElement(aNodeInfoManager->GetNodeInfo(
nsGkAtoms::documentFragmentNodeName,
nullptr, kNameSpaceID_None,
DOCUMENT_FRAGMENT_NODE)),
mHost(nullptr)
{
Init();
}
virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
virtual bool IsNodeOfType(uint32_t aFlags) const override;
virtual nsIDOMNode* AsDOMNode() override { return this; }
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers) override
{
NS_ASSERTION(false, "Trying to bind a fragment to a tree");
return NS_ERROR_NOT_IMPLEMENTED;
}
virtual void UnbindFromTree(bool aDeep, bool aNullParent) override
{
NS_ASSERTION(false, "Trying to unbind a fragment from a tree");
}
virtual Element* GetNameSpaceElement() override
{
return nullptr;
}
Element* GetHost() const { return mHost; }
void SetHost(Element* aHost) { mHost = aHost; }
static already_AddRefed<DocumentFragment>
Constructor(const GlobalObject& aGlobal, ErrorResult& aRv);
#ifdef DEBUG
virtual void List(FILE* out, int32_t aIndent) const override;
virtual void DumpContent(FILE* out, int32_t aIndent, bool aDumpAll) const override;
#endif
protected:
virtual ~DocumentFragment()
{
}
nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
bool aPreallocateChildren) const override;
RefPtr<Element> mHost;
};
} // namespace dom
} // namespace mozilla
inline mozilla::dom::DocumentFragment*
nsINode::AsDocumentFragment()
{
MOZ_ASSERT(IsDocumentFragment());
return static_cast<mozilla::dom::DocumentFragment*>(this);
}
inline const mozilla::dom::DocumentFragment*
nsINode::AsDocumentFragment() const
{
MOZ_ASSERT(IsDocumentFragment());
return static_cast<const mozilla::dom::DocumentFragment*>(this);
}
#endif // mozilla_dom_DocumentFragment_h__