Source/bindings/v8/V8Callback.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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#include "config.h"
#include "bindings/v8/V8Callback.h"

#include "bindings/v8/ScriptController.h"
#include "core/dom/Document.h"

namespace WebCore {

bool invokeCallback(v8::Handle<v8::Object> callback, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext, v8::Isolate* isolate)
{
    return invokeCallback(callback, v8::Context::GetCurrent()->Global(), argc, argv, callbackReturnValue, scriptExecutionContext, isolate);
}

bool invokeCallback(v8::Handle<v8::Object> callback, v8::Handle<v8::Object> thisObject, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext, v8::Isolate* isolate)
{
    v8::TryCatch exceptionCatcher;
    exceptionCatcher.SetVerbose(true);

    v8::Local<v8::Function> callbackFunction;
    if (callback->IsFunction()) {
        callbackFunction = v8::Local<v8::Function>::New(isolate, v8::Handle<v8::Function>::Cast(callback));
    } else if (callback->IsObject()) {
        v8::Local<v8::Value> handleEventFunction = callback->Get(v8::String::NewSymbol("handleEvent"));
        if (handleEventFunction->IsFunction())
            callbackFunction = v8::Local<v8::Function>::Cast(handleEventFunction);
    } else
        return false;

    if (callbackFunction.IsEmpty())
        return false;

    v8::Handle<v8::Value> result = ScriptController::callFunctionWithInstrumentation(scriptExecutionContext, callbackFunction, thisObject, argc, argv, isolate);

    callbackReturnValue = !result.IsEmpty() && result->BooleanValue();
    return exceptionCatcher.HasCaught();
}

} // namespace WebCore