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 "core/CoreExport.h"
   9 #include "core/dom/DOMArrayBufferBase.h"
  10 #include "wtf/ArrayBuffer.h"
  11
  12 namespace blink {
  13
  14 class CORE_EXPORT DOMArrayBuffer final : public DOMArrayBufferBase {
  15     DEFINE_WRAPPERTYPEINFO();
  16 public:
  17     static PassRefPtr<DOMArrayBuffer> create(PassRefPtr<WTF::ArrayBuffer> buffer)
  18     {
  19         return adoptRef(new DOMArrayBuffer(buffer));
  20     }
  21     static PassRefPtr<DOMArrayBuffer> create(unsigned numElements, unsigned elementByteSize)
  22     {
  23         return create(WTF::ArrayBuffer::create(numElements, elementByteSize));
  24     }
  25     static PassRefPtr<DOMArrayBuffer> create(const void* source, unsigned byteLength)
  26     {
  27         return create(WTF::ArrayBuffer::create(source, byteLength));
  28     }
  29     static PassRefPtr<DOMArrayBuffer> create(WTF::ArrayBufferContents& contents)
  30     {
  31         return create(WTF::ArrayBuffer::create(contents));
  32     }
  33
  34     // Only for use by XMLHttpRequest::responseArrayBuffer and
  35     // Internals::serializeObject.
  36     static PassRefPtr<DOMArrayBuffer> createUninitialized(unsigned numElements, unsigned elementByteSize)
  37     {
  38         return create(WTF::ArrayBuffer::createUninitialized(numElements, elementByteSize));
  39     }
  40
  41     PassRefPtr<DOMArrayBuffer> slice(int begin, int end) const
  42     {
  43         return create(buffer()->slice(begin, end));
  44     }
  45     PassRefPtr<DOMArrayBuffer> slice(int begin) const
  46     {
  47         return create(buffer()->slice(begin));
  48     }
  49
  50     v8::Local<v8::Object> wrap(v8::Isolate*, v8::Local<v8::Object> creationContext) override;
  51
  52 private:
  53     explicit DOMArrayBuffer(PassRefPtr<WTF::ArrayBuffer> buffer)
  54         : DOMArrayBufferBase(buffer)
  55     {
  56     }
  57 };
  58
  59 } // namespace blink
  60
  61 #endif // DOMArrayBuffer_h