V8IntentConstructor.cpp   [plain text]

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS 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
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#include "config.h"
#include "Intent.h"

#include "ExceptionCode.h"
#include "MessagePort.h"
#include "SerializedScriptValue.h"

#include "V8Binding.h"
#include "V8BindingMacros.h"
#include "V8DOMWrapper.h"
#include "V8Intent.h"
#include "V8MessagePort.h"
#include "V8Proxy.h"
#include <wtf/ArrayBuffer.h>

namespace WebCore {

v8::Handle<v8::Value> V8Intent::constructorCallback(const v8::Arguments& args)
{
    INC_STATS("DOM.Intent.Constructor");

    if (!args.IsConstructCall())
        return throwError("DOM object constructor cannot be called as a function.", V8Proxy::TypeError);

    if (ConstructorMode::current() == ConstructorMode::WrapExistingObject)
        return args.Holder();
    if (args.Length() < 1)
        return V8Proxy::throwNotEnoughArgumentsError();
    if (args.Length() == 1) {
        // Use the dictionary constructor. This block will return if the
        // argument isn't a valid Dictionary.
        EXCEPTION_BLOCK(Dictionary, options, args[0]);
        ExceptionCode ec = 0;
        RefPtr<Intent> impl = Intent::create(ScriptState::current(), options, ec);
        if (ec)
            return throwError(ec);

        v8::Handle<v8::Object> wrapper = args.Holder();
        V8DOMWrapper::setDOMWrapper(wrapper, &info, impl.get());
        V8DOMWrapper::setJSWrapperForDOMObject(impl.release(), v8::Persistent<v8::Object>::New(wrapper));
        return wrapper;
    }

    ExceptionCode ec = 0;
    STRING_TO_V8PARAMETER_EXCEPTION_BLOCK(V8Parameter<>, action, MAYBE_MISSING_PARAMETER(args, 0, DefaultIsUndefined));
    STRING_TO_V8PARAMETER_EXCEPTION_BLOCK(V8Parameter<>, type, MAYBE_MISSING_PARAMETER(args, 1, DefaultIsUndefined));
    MessagePortArray messagePortArrayTransferList;
    ArrayBufferArray arrayBufferArrayTransferList;
    if (args.Length() > 3) {
        if (!extractTransferables(args[3], messagePortArrayTransferList, arrayBufferArrayTransferList))
            return throwError("Could not extract transferables", V8Proxy::TypeError);
    }
    bool dataDidThrow = false;
    RefPtr<SerializedScriptValue> data = SerializedScriptValue::create(args[2], &messagePortArrayTransferList, &arrayBufferArrayTransferList, dataDidThrow);
    if (dataDidThrow)
        return throwError(DATA_CLONE_ERR);

    RefPtr<Intent> impl = Intent::create(action, type, data, messagePortArrayTransferList, ec);
    if (ec)
        return throwError(ec);

    v8::Handle<v8::Object> wrapper = args.Holder();
    V8DOMWrapper::setDOMWrapper(wrapper, &info, impl.get());
    V8DOMWrapper::setJSWrapperForDOMObject(impl.release(), v8::Persistent<v8::Object>::New(wrapper));
    return wrapper;
}


} // namespace WebCore