1/*
2 *  Copyright (C) 2000 Harri Porten (porten@kde.org)
3 *  Copyright (C) 2006 Jon Shier (jshier@iastate.edu)
4 *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reseved.
5 *  Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
6 *  Copyright (C) 2009 Google Inc. All rights reseved.
7 *
8 *  This library is free software; you can redistribute it and/or
9 *  modify it under the terms of the GNU Lesser General Public
10 *  License as published by the Free Software Foundation; either
11 *  version 2 of the License, or (at your option) any later version.
12 *
13 *  This library is distributed in the hope that it will be useful,
14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 *  Lesser General Public License for more details.
17 *
18 *  You should have received a copy of the GNU Lesser General Public
19 *  License along with this library; if not, write to the Free Software
20 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
21 *  USA
22 */
23
24#include "config.h"
25#include "ScheduledAction.h"
26
27#include "CString.h"
28#include "DOMWindow.h"
29#include "Document.h"
30#include "Frame.h"
31#include "FrameLoader.h"
32#include "JSDOMBinding.h"
33#include "JSDOMWindow.h"
34#include "ScriptController.h"
35#include "ScriptExecutionContext.h"
36#include "ScriptSourceCode.h"
37#include "ScriptValue.h"
38#include <runtime/JSLock.h>
39
40#if ENABLE(WORKERS)
41#include "JSWorkerContext.h"
42#include "WorkerContext.h"
43#include "WorkerThread.h"
44#endif
45
46using namespace JSC;
47
48namespace WebCore {
49
50ScheduledAction* ScheduledAction::create(ExecState* exec, const ArgList& args, DOMWrapperWorld* isolatedWorld)
51{
52    JSValue v = args.at(0);
53    CallData callData;
54    if (v.getCallData(callData) == CallTypeNone) {
55        UString string = v.toString(exec);
56        if (exec->hadException())
57            return 0;
58        return new ScheduledAction(string, isolatedWorld);
59    }
60    ArgList argsTail;
61    args.getSlice(2, argsTail);
62    return new ScheduledAction(v, argsTail, isolatedWorld);
63}
64
65ScheduledAction::ScheduledAction(JSValue function, const ArgList& args, DOMWrapperWorld* isolatedWorld)
66    : m_function(function)
67    , m_isolatedWorld(isolatedWorld)
68{
69    ArgList::const_iterator end = args.end();
70    for (ArgList::const_iterator it = args.begin(); it != end; ++it)
71        m_args.append(*it);
72}
73
74void ScheduledAction::execute(ScriptExecutionContext* context)
75{
76    if (context->isDocument())
77        execute(static_cast<Document*>(context));
78#if ENABLE(WORKERS)
79    else {
80        ASSERT(context->isWorkerContext());
81        execute(static_cast<WorkerContext*>(context));
82    }
83#else
84    ASSERT(context->isDocument());
85#endif
86}
87
88void ScheduledAction::executeFunctionInContext(JSGlobalObject* globalObject, JSValue thisValue)
89{
90    ASSERT(m_function);
91    JSLock lock(SilenceAssertionsOnly);
92
93    CallData callData;
94    CallType callType = m_function.get().getCallData(callData);
95    if (callType == CallTypeNone)
96        return;
97
98    ExecState* exec = globalObject->globalExec();
99
100    MarkedArgumentBuffer args;
101    size_t size = m_args.size();
102    for (size_t i = 0; i < size; ++i)
103        args.append(m_args[i]);
104
105    globalObject->globalData()->timeoutChecker.start();
106    JSC::call(exec, m_function, callType, callData, thisValue, args);
107    globalObject->globalData()->timeoutChecker.stop();
108
109    if (exec->hadException())
110        reportCurrentException(exec);
111}
112
113void ScheduledAction::execute(Document* document)
114{
115    JSDOMWindow* window = toJSDOMWindow(document->frame(), m_isolatedWorld.get());
116    if (!window)
117        return;
118
119    RefPtr<Frame> frame = window->impl()->frame();
120    if (!frame || !frame->script()->canExecuteScripts())
121        return;
122
123    frame->script()->setProcessingTimerCallback(true);
124
125    if (m_function) {
126        executeFunctionInContext(window, window->shell());
127        Document::updateStyleForAllDocuments();
128    } else
129        frame->script()->executeScriptInWorld(m_isolatedWorld.get(), m_code);
130
131    frame->script()->setProcessingTimerCallback(false);
132}
133
134#if ENABLE(WORKERS)
135void ScheduledAction::execute(WorkerContext* workerContext)
136{
137    // In a Worker, the execution should always happen on a worker thread.
138    ASSERT(workerContext->thread()->threadID() == currentThread());
139
140    WorkerScriptController* scriptController = workerContext->script();
141
142    if (m_function) {
143        JSWorkerContext* contextWrapper = scriptController->workerContextWrapper();
144        executeFunctionInContext(contextWrapper, contextWrapper);
145    } else {
146        ScriptSourceCode code(m_code, workerContext->url());
147        scriptController->evaluate(code);
148    }
149}
150#endif // ENABLE(WORKERS)
151
152} // namespace WebCore
153