gecko-dev/dom/base/DocumentFragment.cpp

125 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/. */
/*
* Implementation of DOM Core's DocumentFragment.
*/
#include "mozilla/dom/DocumentFragment.h"
#include "mozilla/dom/Element.h" // for NS_IMPL_ELEMENT_CLONE
#include "mozilla/dom/NodeInfo.h"
#include "nsNodeInfoManager.h"
#include "nsError.h"
#include "nsGkAtoms.h"
#include "nsDOMString.h"
#include "nsContentUtils.h" // for NS_INTERFACE_MAP_ENTRY_TEAROFF
#include "mozilla/dom/DocumentFragmentBinding.h"
#include "nsPIDOMWindow.h"
#include "mozilla/dom/Document.h"
#include "mozilla/IntegerPrintfMacros.h"
namespace mozilla::dom {
JSObject* DocumentFragment::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return DocumentFragment_Binding::Wrap(aCx, this, aGivenProto);
}
bool DocumentFragment::IsNodeOfType(uint32_t aFlags) const { return false; }
#ifdef MOZ_DOM_LIST
void DocumentFragment::List(FILE* out, int32_t aIndent) const {
int32_t indent;
for (indent = aIndent; --indent >= 0;) {
fputs(" ", out);
}
fprintf(out, "DocumentFragment@%p", (void*)this);
fprintf(out, " flags=[%08x]", static_cast<unsigned int>(GetFlags()));
fprintf(out, " refcount=%" PRIuPTR "<", mRefCnt.get());
nsIContent* child = GetFirstChild();
if (child) {
fputs("\n", out);
for (; child; child = child->GetNextSibling()) {
child->List(out, aIndent + 1);
}
for (indent = aIndent; --indent >= 0;) {
fputs(" ", out);
}
}
fputs(">\n", out);
}
void DocumentFragment::DumpContent(FILE* out, int32_t aIndent,
bool aDumpAll) const {
int32_t indent;
for (indent = aIndent; --indent >= 0;) {
fputs(" ", out);
}
fputs("<DocumentFragment>", out);
if (aIndent) {
fputs("\n", out);
}
for (nsIContent* child = GetFirstChild(); child;
child = child->GetNextSibling()) {
int32_t indent = aIndent ? aIndent + 1 : 0;
child->DumpContent(out, indent, aDumpAll);
}
for (indent = aIndent; --indent >= 0;) {
fputs(" ", out);
}
fputs("</DocumentFragment>", out);
if (aIndent) {
fputs("\n", out);
}
}
#endif
/* static */
already_AddRefed<DocumentFragment> DocumentFragment::Constructor(
const GlobalObject& aGlobal, ErrorResult& aRv) {
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(aGlobal.GetAsSupports());
if (!window || !window->GetDoc()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return window->GetDoc()->CreateDocumentFragment();
}
NS_IMPL_CYCLE_COLLECTION_INHERITED(DocumentFragment, FragmentOrElement, mHost)
// QueryInterface implementation for DocumentFragment
NS_INTERFACE_MAP_BEGIN(DocumentFragment)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(DocumentFragment)
NS_INTERFACE_MAP_ENTRY(nsIContent)
NS_INTERFACE_MAP_ENTRY(nsINode)
NS_INTERFACE_MAP_ENTRY(mozilla::dom::EventTarget)
NS_INTERFACE_MAP_ENTRY_TEAROFF(nsISupportsWeakReference,
new nsNodeSupportsWeakRefTearoff(this))
// DOM bindings depend on the identity pointer being the
// same as nsINode (which nsIContent inherits).
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContent)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF_INHERITED(DocumentFragment, FragmentOrElement)
NS_IMPL_RELEASE_INHERITED(DocumentFragment, FragmentOrElement)
NS_IMPL_ELEMENT_CLONE(DocumentFragment)
} // namespace mozilla::dom