1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "bindings/v8/V8Callback.h"
33
34#include "bindings/v8/ScriptController.h"
35#include "core/dom/Document.h"
36
37namespace WebCore {
38
39bool invokeCallback(v8::Handle<v8::Object> callback, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext)
40{
41    return invokeCallback(callback, v8::Context::GetCurrent()->Global(), argc, argv, callbackReturnValue, scriptExecutionContext);
42}
43
44bool invokeCallback(v8::Handle<v8::Object> callback, v8::Handle<v8::Object> thisObject, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext)
45{
46    v8::TryCatch exceptionCatcher;
47    exceptionCatcher.SetVerbose(true);
48
49    v8::Local<v8::Function> callbackFunction;
50    if (callback->IsFunction()) {
51        callbackFunction = v8::Local<v8::Function>::New(v8::Handle<v8::Function>::Cast(callback));
52    } else if (callback->IsObject()) {
53        v8::Local<v8::Value> handleEventFunction = callback->Get(v8::String::NewSymbol("handleEvent"));
54        if (handleEventFunction->IsFunction())
55            callbackFunction = v8::Local<v8::Function>::Cast(handleEventFunction);
56    } else
57        return false;
58
59    if (callbackFunction.IsEmpty())
60        return false;
61
62    v8::Handle<v8::Value> result = ScriptController::callFunctionWithInstrumentation(scriptExecutionContext, callbackFunction, thisObject, argc, argv);
63
64    callbackReturnValue = !result.IsEmpty() && result->BooleanValue();
65    return exceptionCatcher.HasCaught();
66}
67
68} // namespace WebCore
69