tor-browser

The Tor Browser
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DocumentFragment.cpp (3632B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 /*
      8 * Implementation of DOM Core's DocumentFragment.
      9 */
     10 
     11 #include "mozilla/dom/DocumentFragment.h"
     12 
     13 #include "mozilla/IntegerPrintfMacros.h"
     14 #include "mozilla/dom/Document.h"
     15 #include "mozilla/dom/DocumentFragmentBinding.h"
     16 #include "mozilla/dom/Element.h"  // for NS_IMPL_ELEMENT_CLONE
     17 #include "mozilla/dom/NodeInfo.h"
     18 #include "nsContentUtils.h"  // for NS_INTERFACE_MAP_ENTRY_TEAROFF
     19 #include "nsDOMString.h"
     20 #include "nsError.h"
     21 #include "nsGkAtoms.h"
     22 #include "nsNodeInfoManager.h"
     23 #include "nsPIDOMWindow.h"
     24 
     25 namespace mozilla::dom {
     26 
     27 JSObject* DocumentFragment::WrapNode(JSContext* aCx,
     28                                     JS::Handle<JSObject*> aGivenProto) {
     29  return DocumentFragment_Binding::Wrap(aCx, this, aGivenProto);
     30 }
     31 
     32 #ifdef MOZ_DOM_LIST
     33 void DocumentFragment::List(FILE* out, int32_t aIndent) const {
     34  int32_t indent;
     35  for (indent = aIndent; --indent >= 0;) {
     36    fputs("  ", out);
     37  }
     38 
     39  fprintf(out, "DocumentFragment@%p", (void*)this);
     40 
     41  fprintf(out, " flags=[%08x]", static_cast<unsigned int>(GetFlags()));
     42  fprintf(out, " refcount=%" PRIuPTR "<", mRefCnt.get());
     43 
     44  nsIContent* child = GetFirstChild();
     45  if (child) {
     46    fputs("\n", out);
     47 
     48    for (; child; child = child->GetNextSibling()) {
     49      child->List(out, aIndent + 1);
     50    }
     51 
     52    for (indent = aIndent; --indent >= 0;) {
     53      fputs("  ", out);
     54    }
     55  }
     56 
     57  fputs(">\n", out);
     58 }
     59 
     60 void DocumentFragment::DumpContent(FILE* out, int32_t aIndent,
     61                                   bool aDumpAll) const {
     62  int32_t indent;
     63  for (indent = aIndent; --indent >= 0;) {
     64    fputs("  ", out);
     65  }
     66 
     67  fputs("<DocumentFragment>", out);
     68 
     69  if (aIndent) {
     70    fputs("\n", out);
     71  }
     72 
     73  for (nsIContent* child = GetFirstChild(); child;
     74       child = child->GetNextSibling()) {
     75    int32_t indent = aIndent ? aIndent + 1 : 0;
     76    child->DumpContent(out, indent, aDumpAll);
     77  }
     78  for (indent = aIndent; --indent >= 0;) {
     79    fputs("  ", out);
     80  }
     81  fputs("</DocumentFragment>", out);
     82 
     83  if (aIndent) {
     84    fputs("\n", out);
     85  }
     86 }
     87 #endif
     88 
     89 /* static */
     90 already_AddRefed<DocumentFragment> DocumentFragment::Constructor(
     91    const GlobalObject& aGlobal, ErrorResult& aRv) {
     92  nsCOMPtr<nsPIDOMWindowInner> window =
     93      do_QueryInterface(aGlobal.GetAsSupports());
     94  if (!window || !window->GetDoc()) {
     95    aRv.Throw(NS_ERROR_FAILURE);
     96    return nullptr;
     97  }
     98 
     99  return window->GetDoc()->CreateDocumentFragment();
    100 }
    101 
    102 NS_IMPL_CYCLE_COLLECTION_INHERITED(DocumentFragment, FragmentOrElement, mHost)
    103 
    104 // QueryInterface implementation for DocumentFragment
    105 NS_INTERFACE_MAP_BEGIN(DocumentFragment)
    106  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
    107  NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(DocumentFragment)
    108  NS_INTERFACE_MAP_ENTRY(nsIContent)
    109  NS_INTERFACE_MAP_ENTRY(nsINode)
    110  NS_INTERFACE_MAP_ENTRY(mozilla::dom::EventTarget)
    111  NS_INTERFACE_MAP_ENTRY_TEAROFF(nsISupportsWeakReference,
    112                                 new nsNodeSupportsWeakRefTearoff(this))
    113  // DOM bindings depend on the identity pointer being the
    114  // same as nsINode (which nsIContent inherits).
    115  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContent)
    116 NS_INTERFACE_MAP_END
    117 
    118 NS_IMPL_ADDREF_INHERITED(DocumentFragment, FragmentOrElement)
    119 NS_IMPL_RELEASE_INHERITED(DocumentFragment, FragmentOrElement)
    120 
    121 NS_IMPL_ELEMENT_CLONE(DocumentFragment)
    122 
    123 }  // namespace mozilla::dom