1 files changed, 84 insertions, 0 deletions
diff --git a/WebCore/bindings/v8/custom/V8WebGLArrayBufferCustom.cpp b/WebCore/bindings/v8/custom/V8WebGLArrayBufferCustom.cpp
new file mode 100644
index 0000000..16a1f51
--- /dev/null
+++ b/WebCore/bindings/v8/custom/V8WebGLArrayBufferCustom.cpp
@@ -0,0 +1,84 @@
+/*
+ * 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 "V8CustomBinding.h"
+#include "V8Proxy.h"
+
+namespace WebCore {
+
+CALLBACK_FUNC_DECL(WebGLArrayBufferConstructor)
+{
+    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)