/platform/external/webkit/WebCore/bindings/v8/custom/V8HTMLAudioElementConstructor.cpp

https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 97 lines · 50 code · 16 blank · 31 comment · 5 complexity · 9aa18bc3c71fef07424845eb093b0db3 MD5 · raw file

  1. /*
  2. * Copyright (C) 2009 Google Inc. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions are
  6. * met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above
  11. * copyright notice, this list of conditions and the following disclaimer
  12. * in the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Google Inc. nor the names of its
  15. * contributors may be used to endorse or promote products derived from
  16. * this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. */
  30. #include "config.h"
  31. #include "V8HTMLAudioElementConstructor.h"
  32. #include "HTMLAudioElement.h"
  33. #include "Document.h"
  34. #include "Frame.h"
  35. #include "HTMLNames.h"
  36. #include "V8Binding.h"
  37. #include "V8Document.h"
  38. #include "V8HTMLAudioElement.h"
  39. #include "V8Proxy.h"
  40. #include <wtf/RefPtr.h>
  41. namespace WebCore {
  42. static v8::Handle<v8::Value> v8HTMLAudioElementConstructorCallback(const v8::Arguments& args)
  43. {
  44. INC_STATS("DOM.HTMLAudioElement.Contructor");
  45. if (!args.IsConstructCall())
  46. return throwError("DOM object constructor cannot be called as a function.");
  47. Frame* frame = V8Proxy::retrieveFrameForCurrentContext();
  48. if (!frame)
  49. return throwError("Audio constructor associated frame is unavailable", V8Proxy::ReferenceError);
  50. Document* document = frame->document();
  51. if (!document)
  52. return throwError("Audio constructor associated document is unavailable", V8Proxy::ReferenceError);
  53. // Make sure the document is added to the DOM Node map. Otherwise, the HTMLAudioElement instance
  54. // may end up being the only node in the map and get garbage-ccollected prematurely.
  55. toV8(document);
  56. RefPtr<HTMLAudioElement> audio = new HTMLAudioElement(HTMLNames::audioTag, document);
  57. audio->setAutobuffer(true);
  58. if (args.Length() > 0) {
  59. audio->setSrc(toWebCoreString(args[0]));
  60. audio->scheduleLoad();
  61. }
  62. V8DOMWrapper::setDOMWrapper(args.Holder(), V8ClassIndex::ToInt(V8ClassIndex::AUDIO), audio.get());
  63. audio->ref();
  64. V8DOMWrapper::setJSWrapperForDOMNode(audio.get(), v8::Persistent<v8::Object>::New(args.Holder()));
  65. return args.Holder();
  66. }
  67. v8::Persistent<v8::FunctionTemplate> V8HTMLAudioElementConstructor::GetTemplate()
  68. {
  69. static v8::Persistent<v8::FunctionTemplate> cachedTemplate;
  70. if (!cachedTemplate.IsEmpty())
  71. return cachedTemplate;
  72. v8::HandleScope scope;
  73. v8::Local<v8::FunctionTemplate> result = v8::FunctionTemplate::New(v8HTMLAudioElementConstructorCallback);
  74. v8::Local<v8::ObjectTemplate> instance = result->InstanceTemplate();
  75. instance->SetInternalFieldCount(V8HTMLAudioElement::internalFieldCount);
  76. result->SetClassName(v8::String::New("HTMLAudioElement"));
  77. result->Inherit(V8HTMLAudioElement::GetTemplate());
  78. cachedTemplate = v8::Persistent<v8::FunctionTemplate>::New(result);
  79. return cachedTemplate;
  80. }
  81. } // namespace WebCore