src/third_party/WebKit/Source/core/dom/DOMArrayBuffer.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef DOMArrayBuffer_h
   6 #define DOMArrayBuffer_h
   7
   8 #include "bindings/core/v8/ScriptWrappable.h"
   9 #include "wtf/ArrayBuffer.h"
  10 #include "wtf/RefCounted.h"
  11
  12 namespace blink {
  13
  14 class DOMArrayBuffer final : public RefCounted<DOMArrayBuffer>, public ScriptWrappable {
  15     DEFINE_WRAPPERTYPEINFO();
  16 public:
  17     static PassRefPtr<DOMArrayBuffer> create(PassRefPtr<WTF::ArrayBuffer> buffer)
  18     {
  19         if (!buffer)
  20             return nullptr;
  21         return adoptRef(new DOMArrayBuffer(buffer));
  22     }
  23     static PassRefPtr<DOMArrayBuffer> create(unsigned numElements, unsigned elementByteSize)
  24     {
  25         return adoptRef(new DOMArrayBuffer(WTF::ArrayBuffer::create(numElements, elementByteSize)));
  26     }
  27     static PassRefPtr<DOMArrayBuffer> create(const void* source, unsigned byteLength)
  28     {
  29         return adoptRef(new DOMArrayBuffer(WTF::ArrayBuffer::create(source, byteLength)));
  30     }
  31     static PassRefPtr<DOMArrayBuffer> create(WTF::ArrayBufferContents& contents)
  32     {
  33         return adoptRef(new DOMArrayBuffer(WTF::ArrayBuffer::create(contents)));
  34     }
  35
  36     const WTF::ArrayBuffer* buffer() const { return m_buffer.get(); }
  37     WTF::ArrayBuffer* buffer() { return m_buffer.get(); }
  38
  39     const void* data() const { return buffer()->data(); }
  40     unsigned long byteLength() const { return buffer()->byteLength(); }
  41     void* data() { return buffer()->data(); }
  42     bool transfer(WTF::ArrayBufferContents& result) { return buffer()->transfer(result); }
  43     bool isNeutered() { return buffer()->isNeutered(); }
  44
  45     virtual v8::Handle<v8::Object> wrap(v8::Handle<v8::Object> creationContext, v8::Isolate*) override;
  46     virtual v8::Handle<v8::Object> associateWithWrapper(const WrapperTypeInfo*, v8::Handle<v8::Object> wrapper, v8::Isolate*) override;
  47
  48 private:
  49     explicit DOMArrayBuffer(PassRefPtr<WTF::ArrayBuffer> buffer)
  50         : m_buffer(buffer)
  51     {
  52         ASSERT(m_buffer);
  53     }
  54
  55     RefPtr<WTF::ArrayBuffer> m_buffer;
  56 };
  57
  58 } // namespace blink
  59
  60 #endif // DOMArrayBuffer_h