[WIP] bindings: Introduce PropertyBag

Source/bindings/core/v8/PropertyBag.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "bindings/core/v8/PropertyBag.h"
+
+#include "bindings/core/v8/ArrayValue.h"
+#include "bindings/core/v8/V8TextTrack.h"
+#include "bindings/core/v8/V8Window.h"
+
+namespace blink {
+
+bool PropertyBag::getInternal(const String& key, v8::Handle<v8::Value>& v8Value, ArrayValue& value) const
+{
+    if (!v8Value->IsArray())
+        return false;
+    value = ArrayValue(v8::Handle<v8::Array>::Cast(v8Value), m_isolate);
+    return true;
+}
+
+bool PropertyBag::getInternal(const String& key, v8::Handle<v8::Value>& v8Value, RefPtrWillBeMember<LocalDOMWindow>& value) const
+{
+    value = toDOMWindow(v8Value, m_isolate);
+    return !!value;
+}
+
+bool PropertyBag::getInternal(const String& key, v8::Handle<v8::Value>& v8Value, MessagePortArray& value) const
+{
+    value = toRefPtrWillBeMemberNativeArray<MessagePort, V8MessagePort>(v8Value, key, m_isolate, &m_exceptionState);
+    return !m_exceptionState.hadException();
+}
+
+bool PropertyBag::getInternal(const String& key, v8::Handle<v8::Value>& v8Value, HashSet<AtomicString>& value) const
+{
+    // FIXME: Support array-like objects
+    if (!v8Value->IsArray())
+        return false;
+
+    v8::Handle<v8::Array> v8Array = v8::Handle<v8::Array>::Cast(v8Value);
+    for (size_t i = 0; i < v8Array->Length(); ++i) {
+        v8::Local<v8::Value> indexedValue = v8Array->Get(v8::Integer::New(m_isolate, i));
+        TOSTRING_DEFAULT(V8StringResource<>, stringValue, indexedValue, false);
+        value.add(stringValue);
+    }
+
+    return true;
+}
+
+bool PropertyBag::getInternal(const String& key, v8::Handle<v8::Value>& v8Value, RefPtrWillBeMember<TrackBase>& value) const
+{
+    TrackBase* source = 0;
+    if (v8Value->IsObject()) {
+        v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(v8Value);
+
+        // FIXME: this will need to be changed so it can also return an AudioTrack or a VideoTrack once
+        // we add them.
+        v8::Handle<v8::Object> track = V8TextTrack::findInstanceInPrototypeChain(wrapper, m_isolate);
+        if (!track.IsEmpty())
+            source = V8TextTrack::toImpl(track);
+    }
+    value = source;
+    return !!source;
+}
+
+bool PropertyBag::getInternal(const String& key, v8::Handle<v8::Value>& v8Value, RefPtrWillBeMember<EventTarget>& value) const
+{
+    value = nullptr;
+    // We need to handle a LocalDOMWindow specially, because a LocalDOMWindow wrapper
+    // exists on a prototype chain of v8Value.
+    if (v8Value->IsObject()) {
+        v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(v8Value);
+        v8::Handle<v8::Object> window = V8Window::findInstanceInPrototypeChain(wrapper, m_isolate);
+        if (!window.IsEmpty()) {
+            value = toWrapperTypeInfo(window)->toEventTarget(window);
+            return true;
+        }
+    }
+
+    if (V8DOMWrapper::isDOMWrapper(v8Value)) {
+        v8::Handle<v8::Object> wrapper = v8::Handle<v8::Object>::Cast(v8Value);
+        value = toWrapperTypeInfo(wrapper)->toEventTarget(wrapper);
+    }
+    return !!value;
+}
+
+} // namespace blink