Implement ImageData constructors.

Source/bindings/v8/custom/V8ImageDataCustom.cpp

Index: Source/bindings/v8/custom/V8ImageDataCustom.cpp
diff --git a/Source/bindings/v8/custom/V8ImageDataCustom.cpp b/Source/bindings/v8/custom/V8ImageDataCustom.cpp
index 813731456ecb5f2a7d3e1a80147467bace38a7e4..8573f9a9302df3c09ba4b31d1a3163222a82e609 100644
--- a/Source/bindings/v8/custom/V8ImageDataCustom.cpp
+++ b/Source/bindings/v8/custom/V8ImageDataCustom.cpp
@@ -31,6 +31,7 @@
 #include "config.h"
 #include "V8ImageData.h"
 
+#include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/custom/V8Uint8ClampedArrayCustom.h"
 
 namespace WebCore {
@@ -52,4 +53,47 @@ v8::Handle<v8::Object> wrap(ImageData* impl, v8::Handle<v8::Object> creationCont
     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