bindings: Adds virtual ScriptWrappable::wrap method.

Source/core/html/ImageData.cpp

 /*
  * Copyright (C) 2008 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 12 matching lines @@
  * 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"
 #include "core/html/ImageData.h"
 
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/custom/V8Uint8ClampedArrayCustom.h"
 #include "core/dom/ExceptionCode.h"
 #include "platform/RuntimeEnabledFeatures.h"
 
 namespace blink {
 
 PassRefPtrWillBeRawPtr<ImageData> ImageData::create(const IntSize& size)
 {
     Checked<int, RecordOverflow> dataSize = 4;
     dataSize *= size.width();
     dataSize *= size.height();
@@ skipping 74 matching lines @@
     if (!height) {
         height = length / width;
     } else if (height != length / width) {
         exceptionState.throwDOMException(IndexSizeError, "The input data byte length is not equal to (4 * width * height).");
         return nullptr;
     }
 
     return adoptRefWillBeNoop(new ImageData(IntSize(width, height), data));
 }
 
+v8::Handle<v8::Object> ImageData::wrap(v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
+{
+    v8::Handle<v8::Object> wrapper = ScriptWrappable::wrap(creationContext, isolate);
+    if (!wrapper.IsEmpty()) {
+        // Create a V8 Uint8ClampedArray object.
+        v8::Handle<v8::Value> pixelArray = toV8(data(), creationContext, isolate);
+        // Set the "data" property of the ImageData object to
+        // the created v8 object, eliminating the C++ callback
+        // when accessing the "data" property.
+        if (!pixelArray.IsEmpty())
+            wrapper->ForceSet(v8AtomicString(isolate, "data"), pixelArray, v8::ReadOnly);
+    }
+    return wrapper;
+}
+
 ImageData::ImageData(const IntSize& size)
     : m_size(size)
     , m_data(Uint8ClampedArray::create(size.width() * size.height() * 4))
 {
     ScriptWrappable::init(this);
 }
 
 ImageData::ImageData(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArray)
     : m_size(size)
     , m_data(byteArray)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.height() * 4) <= m_data->length());
     ScriptWrappable::init(this);
 }
 
 }
-