/platform/external/webkit/WebCore/bindings/v8/custom/V8WebGLArrayBufferCustom.cpp
https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 83 lines · 27 code · 14 blank · 42 comment · 4 complexity · a58995e6fd988aa9cdcc9ed0154a50d1 MD5 · raw file
- /*
- * Copyright (C) 2009 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include "config.h"
- #if ENABLE(3D_CANVAS)
- #include "WebGLArrayBuffer.h"
- #include "V8Binding.h"
- #include "V8WebGLArrayBuffer.h"
- #include "V8Proxy.h"
- namespace WebCore {
- v8::Handle<v8::Value> V8WebGLArrayBuffer::constructorCallback(const v8::Arguments& args)
- {
- INC_STATS("DOM.WebGLArrayBuffer.Constructor");
- if (!args.IsConstructCall())
- return throwError("DOM object constructor cannot be called as a function.");
- // If we return a previously constructed WebGLArrayBuffer,
- // e.g. from the call to WebGLArray.buffer, this code is called
- // with a zero-length argument list. The V8DOMWrapper will then
- // set the internal pointer in the newly-created object.
- // Unfortunately it doesn't look like it's possible to distinguish
- // between this case and that where the user calls "new
- // WebGLArrayBuffer()" from JavaScript. To guard against problems,
- // we always create at least a zero-length WebGLArrayBuffer, even
- // if it is immediately overwritten by the V8DOMWrapper.
- // Supported constructors:
- // WebGLArrayBuffer(n) where n is an integer:
- // -- create an empty buffer of n bytes
- int argLen = args.Length();
- if (argLen > 1)
- return throwError("Wrong number of arguments specified to constructor (requires 1)");
- int len = 0;
- if (argLen > 0) {
- if (!args[0]->IsInt32())
- return throwError("Argument to WebGLArrayBuffer constructor was not an integer");
- len = toInt32(args[0]);
- }
- RefPtr<WebGLArrayBuffer> buffer = WebGLArrayBuffer::create(len);
- // Transform the holder into a wrapper object for the array.
- V8DOMWrapper::setDOMWrapper(args.Holder(), V8ClassIndex::ToInt(V8ClassIndex::WEBGLARRAYBUFFER), buffer.get());
- return toV8(buffer.release(), args.Holder());
- }
- } // namespace WebCore
- #endif // ENABLE(3D_CANVAS)