Implement ImageData constructors.

Source/bindings/v8/custom/V8ImageDataCustom.cpp

 /*
  * Copyright (C) 2010 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
@@ skipping 13 matching lines @@
  * 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"
 #include "V8ImageData.h"
 
+#include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/custom/V8Uint8ClampedArrayCustom.h"
 
 namespace WebCore {
 
 v8::Handle<v8::Object> wrap(ImageData* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     ASSERT(impl);
     v8::Handle<v8::Object> wrapper = V8ImageData::createWrapper(impl, creationContext, isolate);
     if (!wrapper.IsEmpty()) {
         // Create a V8 Uint8ClampedArray object.
         v8::Handle<v8::Value> pixelArray = toV8(impl->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->Set(v8AtomicString(isolate, "data"), pixelArray, v8::ReadOnly);
     }
 
     return wrapper;
 }
 
+void V8ImageData::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    ExceptionState exceptionState(ExceptionState::ConstructionContext, "ImageData", info.Holder(), info.GetIsolate());
+    if (info.Length() >= 2 && V8Uint8ClampedArray::hasInstance(info[0], info.GetIsolate())) {
+        V8TRYCATCH_VOID(Uint8ClampedArray*, data, info[0]->IsUint8ClampedArray() ? V8Uint8ClampedArray::toNative(v8::Handle<v8::Uint8ClampedArray>::Cast(info[0])) : 0);
+        V8TRYCATCH_EXCEPTION_VOID(unsigned, width, toUInt32(info[1], exceptionState), exceptionState);
+        V8TRYCATCH_EXCEPTION_VOID(unsigned, height, toUInt32(info[2], exceptionState), exceptionState);
+        RefPtr<ImageData> impl = ImageData::create(data, width, height, exceptionState);
+        v8::Handle<v8::Object> wrapper = info.Holder();
+        if (exceptionState.throwIfNeeded())
+            return;
+
+        v8::Handle<v8::Value> pixelArray = toV8(impl->data(), wrapper, info.GetIsolate());
+        V8DOMWrapper::associateObjectWithWrapper<V8ImageData>(impl.release(), &V8ImageData::wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent);
+        if (!pixelArray.IsEmpty())
+            wrapper->Set(v8AtomicString(info.GetIsolate(), "data"), pixelArray, v8::ReadOnly);
+        v8SetReturnValue(info, wrapper);
+        return;
+    }
+    if (info.Length() >= 2) {
+        V8TRYCATCH_EXCEPTION_VOID(unsigned, width, toUInt32(info[0], exceptionState), exceptionState);
+        V8TRYCATCH_EXCEPTION_VOID(unsigned, height, toUInt32(info[1], exceptionState), exceptionState);
+        RefPtr<ImageData> impl = ImageData::create(width, height, exceptionState);
+        v8::Handle<v8::Object> wrapper = info.Holder();
+        if (exceptionState.throwIfNeeded())
+            return;
+
+        v8::Handle<v8::Value> pixelArray = toV8(impl->data(), wrapper, info.GetIsolate());
+        V8DOMWrapper::associateObjectWithWrapper<V8ImageData>(impl.release(), &V8ImageData::wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent);
+        if (!pixelArray.IsEmpty())
+            wrapper->Set(v8AtomicString(info.GetIsolate(), "data"), pixelArray, v8::ReadOnly);
+        v8SetReturnValue(info, wrapper);
+        return;
+    }
+    if (UNLIKELY(info.Length() < 2)) {
+        exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(2, info.Length()));
+        exceptionState.throwIfNeeded();
+        return;
+    }
+    exceptionState.throwTypeError("No matching constructor signature.");
+    exceptionState.throwIfNeeded();
+}
+
 } // namespace WebCore