Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/CustomElementConstructorBuilder.cpp

Index: sky/engine/bindings/core/v8/CustomElementConstructorBuilder.cpp
diff --git a/sky/engine/bindings/core/v8/CustomElementConstructorBuilder.cpp b/sky/engine/bindings/core/v8/CustomElementConstructorBuilder.cpp
deleted file mode 100644
index af8377911ed959ab7a599c376834e1f92005be11..0000000000000000000000000000000000000000
--- a/sky/engine/bindings/core/v8/CustomElementConstructorBuilder.cpp
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * Copyright (C) 2013 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 "sky/engine/config.h"
-#include "sky/engine/bindings/core/v8/CustomElementConstructorBuilder.h"
-
-#include "bindings/core/v8/V8Document.h"
-#include "core/V8HTMLElementWrapperFactory.h" // FIXME: should be bindings/core/v8
-#include "sky/engine/bindings/core/v8/CustomElementBinding.h"
-#include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
-#include "sky/engine/bindings/core/v8/Dictionary.h"
-#include "sky/engine/bindings/core/v8/ExceptionState.h"
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/bindings/core/v8/V8HiddenValue.h"
-#include "sky/engine/bindings/core/v8/V8PerContextData.h"
-#include "sky/engine/core/dom/Document.h"
-#include "sky/engine/core/dom/custom/CustomElementDefinition.h"
-#include "sky/engine/core/dom/custom/CustomElementException.h"
-#include "sky/engine/core/dom/custom/CustomElementProcessingStack.h"
-#include "sky/engine/wtf/Assertions.h"
-
-namespace blink {
-
-static void constructCustomElement(const v8::FunctionCallbackInfo<v8::Value>&);
-
-CustomElementConstructorBuilder::CustomElementConstructorBuilder(ScriptState* scriptState, const Dictionary* options)
-    : m_scriptState(scriptState)
-    , m_options(options)
-    , m_wrapperType(0)
-{
-    ASSERT(m_scriptState->context() == m_scriptState->isolate()->GetCurrentContext());
-}
-
-bool CustomElementConstructorBuilder::validateOptions(const AtomicString& type, QualifiedName& tagName, ExceptionState& exceptionState)
-{
-    ASSERT(m_prototype.IsEmpty());
-
-    v8::TryCatch tryCatch;
-
-    ScriptValue prototypeScriptValue;
-    if (DictionaryHelper::get(*m_options, "prototype", prototypeScriptValue) && !prototypeScriptValue.isNull()) {
-        ASSERT(!tryCatch.HasCaught());
-        if (!prototypeScriptValue.isObject()) {
-            CustomElementException::throwException(CustomElementException::PrototypeNotAnObject, type, exceptionState);
-            tryCatch.ReThrow();
-            return false;
-        }
-        m_prototype = prototypeScriptValue.v8Value().As<v8::Object>();
-    } else if (!tryCatch.HasCaught()) {
-        m_prototype = v8::Object::New(m_scriptState->isolate());
-        v8::Local<v8::Object> basePrototype = m_scriptState->perContextData()->prototypeForType(&V8HTMLElement::wrapperTypeInfo);
-        if (!basePrototype.IsEmpty())
-            m_prototype->SetPrototype(basePrototype);
-    }
-
-    if (tryCatch.HasCaught()) {
-        tryCatch.ReThrow();
-        return false;
-    }
-
-    AtomicString extends;
-    bool extendsProvidedAndNonNull = DictionaryHelper::get(*m_options, "extends", extends) && extends != "null";
-
-    if (tryCatch.HasCaught()) {
-        tryCatch.ReThrow();
-        return false;
-    }
-
-    if (!m_scriptState->perContextData()) {
-        // FIXME: This should generate an InvalidContext exception at a later point.
-        CustomElementException::throwException(CustomElementException::ContextDestroyedCheckingPrototype, type, exceptionState);
-        tryCatch.ReThrow();
-        return false;
-    }
-
-    ASSERT(!tryCatch.HasCaught());
-
-    AtomicString localName;
-
-    if (extendsProvidedAndNonNull) {
-        localName = extends.lower();
-
-        if (!Document::isValidName(localName)) {
-            CustomElementException::throwException(CustomElementException::ExtendsIsInvalidName, type, exceptionState);
-            tryCatch.ReThrow();
-            return false;
-        }
-        if (CustomElement::isValidName(localName)) {
-            CustomElementException::throwException(CustomElementException::ExtendsIsCustomElementName, type, exceptionState);
-            tryCatch.ReThrow();
-            return false;
-        }
-    } else {
-        localName = type;
-    }
-
-    if (!extendsProvidedAndNonNull)
-        m_wrapperType = &V8HTMLElement::wrapperTypeInfo;
-    else
-        m_wrapperType = findWrapperTypeForHTMLTagName(localName);
-
-    ASSERT(!tryCatch.HasCaught());
-    ASSERT(m_wrapperType);
-    tagName = QualifiedName(localName);
-    return m_wrapperType;
-}
-
-PassRefPtr<CustomElementLifecycleCallbacks> CustomElementConstructorBuilder::createCallbacks()
-{
-    ASSERT(!m_prototype.IsEmpty());
-
-    v8::TryCatch exceptionCatcher;
-    exceptionCatcher.SetVerbose(true);
-
-    v8::Isolate* isolate = m_scriptState->isolate();
-    v8::Handle<v8::Function> created = retrieveCallback(isolate, "createdCallback");
-    v8::Handle<v8::Function> attached = retrieveCallback(isolate, "attachedCallback");
-    v8::Handle<v8::Function> detached = retrieveCallback(isolate, "detachedCallback");
-    v8::Handle<v8::Function> attributeChanged = retrieveCallback(isolate, "attributeChangedCallback");
-
-    m_callbacks = V8CustomElementLifecycleCallbacks::create(m_scriptState.get(), m_prototype, created, attached, detached, attributeChanged);
-    return m_callbacks.get();
-}
-
-v8::Handle<v8::Function> CustomElementConstructorBuilder::retrieveCallback(v8::Isolate* isolate, const char* name)
-{
-    v8::Handle<v8::Value> value = m_prototype->Get(v8String(isolate, name));
-    if (value.IsEmpty() || !value->IsFunction())
-        return v8::Handle<v8::Function>();
-    return value.As<v8::Function>();
-}
-
-bool CustomElementConstructorBuilder::createConstructor(Document* document, CustomElementDefinition* definition, ExceptionState& exceptionState)
-{
-    ASSERT(!m_prototype.IsEmpty());
-    ASSERT(m_constructor.IsEmpty());
-    ASSERT(document);
-
-    v8::Isolate* isolate = m_scriptState->isolate();
-
-    if (!prototypeIsValid(definition->localName(), exceptionState))
-        return false;
-
-    v8::Local<v8::FunctionTemplate> constructorTemplate = v8::FunctionTemplate::New(isolate);
-    constructorTemplate->SetCallHandler(constructCustomElement);
-    m_constructor = constructorTemplate->GetFunction();
-    if (m_constructor.IsEmpty()) {
-        CustomElementException::throwException(CustomElementException::ContextDestroyedRegisteringDefinition, definition->localName(), exceptionState);
-        return false;
-    }
-
-    v8::Handle<v8::String> v8TagName = v8String(isolate, definition->localName());
-
-    m_constructor->SetName(v8TagName);
-
-    V8HiddenValue::setHiddenValue(isolate, m_constructor, V8HiddenValue::customElementDocument(isolate), toV8(document, m_scriptState->context()->Global(), isolate));
-    V8HiddenValue::setHiddenValue(isolate, m_constructor, V8HiddenValue::customElementTagName(isolate), v8TagName);
-
-    v8::Handle<v8::String> prototypeKey = v8String(isolate, "prototype");
-    v8::Handle<v8::String> constructorKey = v8String(isolate, "constructor");
-
-    ASSERT(m_constructor->HasOwnProperty(prototypeKey));
-    // This sets the property *value*; calling Set is safe because
-    // "prototype" is a non-configurable data property so there can be
-    // no side effects.
-    m_constructor->Set(prototypeKey, m_prototype);
-    // This *configures* the property. ForceSet of a function's
-    // "prototype" does not affect the value, but can reconfigure the
-    // property.
-    m_constructor->ForceSet(prototypeKey, m_prototype, v8::PropertyAttribute(v8::ReadOnly | v8::DontEnum | v8::DontDelete));
-    // The generated constructor should inherit from your constructor.
-    m_constructor->SetPrototype(m_prototype->Get(constructorKey));
-
-    V8HiddenValue::setHiddenValue(isolate, m_prototype, V8HiddenValue::customElementIsInterfacePrototypeObject(isolate), v8::True(isolate));
-    m_prototype->ForceSet(constructorKey, m_constructor, v8::DontEnum);
-
-    return true;
-}
-
-bool CustomElementConstructorBuilder::prototypeIsValid(const AtomicString& type, ExceptionState& exceptionState) const
-{
-    if (m_prototype->InternalFieldCount() || !V8HiddenValue::getHiddenValue(m_scriptState->isolate(), m_prototype, V8HiddenValue::customElementIsInterfacePrototypeObject(m_scriptState->isolate())).IsEmpty()) {
-        CustomElementException::throwException(CustomElementException::PrototypeInUse, type, exceptionState);
-        return false;
-    }
-
-    if (m_prototype->GetPropertyAttributes(v8String(m_scriptState->isolate(), "constructor")) & v8::DontDelete) {
-        CustomElementException::throwException(CustomElementException::ConstructorPropertyNotConfigurable, type, exceptionState);
-        return false;
-    }
-
-    return true;
-}
-
-bool CustomElementConstructorBuilder::didRegisterDefinition(CustomElementDefinition* definition) const
-{
-    ASSERT(!m_constructor.IsEmpty());
-
-    return m_callbacks->setBinding(definition, CustomElementBinding::create(m_scriptState->isolate(), m_prototype, m_wrapperType));
-}
-
-ScriptValue CustomElementConstructorBuilder::bindingsReturnValue() const
-{
-    return ScriptValue(m_scriptState.get(), m_constructor);
-}
-
-bool CustomElementConstructorBuilder::hasValidPrototypeChainFor(const WrapperTypeInfo* type) const
-{
-    v8::Handle<v8::Object> elementPrototype = m_scriptState->perContextData()->prototypeForType(type);
-    if (elementPrototype.IsEmpty())
-        return false;
-
-    v8::Handle<v8::Value> chain = m_prototype;
-    while (!chain.IsEmpty() && chain->IsObject()) {
-        if (chain == elementPrototype)
-            return true;
-        chain = chain.As<v8::Object>()->GetPrototype();
-    }
-
-    return false;
-}
-
-static void constructCustomElement(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    v8::Isolate* isolate = info.GetIsolate();
-
-    if (!info.IsConstructCall()) {
-        V8ThrowException::throwTypeError("DOM object constructor cannot be called as a function.", isolate);
-        return;
-    }
-
-    if (info.Length() > 0) {
-        V8ThrowException::throwTypeError("This constructor should be called without arguments.", isolate);
-        return;
-    }
-
-    Document* document = V8Document::toNative(V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Callee(), V8HiddenValue::customElementDocument(isolate)).As<v8::Object>());
-    TOSTRING_VOID(V8StringResource<>, tagName, V8HiddenValue::getHiddenValue(isolate, info.Callee(), V8HiddenValue::customElementTagName(isolate)));
-
-    ExceptionState exceptionState(ExceptionState::ConstructionContext, "CustomElement", info.Holder(), info.GetIsolate());
-    CustomElementProcessingStack::CallbackDeliveryScope deliveryScope;
-    RefPtr<Element> element = document->createElement(tagName, exceptionState);
-    if (exceptionState.throwIfNeeded())
-        return;
-    v8SetReturnValueFast(info, element.release(), document);
-}
-
-} // namespace blink