1 /*
2 * Copyright (C) 2009, 2011 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 "ScriptState.h"
33
34 #include "Frame.h"
35 #include "JSDOMWindowBase.h"
36 #include "JSWorkerContext.h"
37 #include "Node.h"
38 #include "Page.h"
39 #include "WorkerContext.h"
40 #include "WorkerScriptController.h"
41 #include <interpreter/CallFrame.h>
42 #include <runtime/JSGlobalObject.h>
43
44 namespace WebCore {
45
~ScriptStateProtectedPtr()46 ScriptStateProtectedPtr::~ScriptStateProtectedPtr()
47 {
48 }
49
ScriptStateProtectedPtr(ScriptState * scriptState)50 ScriptStateProtectedPtr::ScriptStateProtectedPtr(ScriptState* scriptState)
51 : m_globalObject(scriptState->globalData(), scriptState->lexicalGlobalObject())
52 {
53 }
54
get() const55 ScriptState* ScriptStateProtectedPtr::get() const
56 {
57 if (m_globalObject)
58 return const_cast<JSC::JSGlobalObject*>(m_globalObject.get())->globalExec();
59 return 0;
60 }
61
62
mainWorldScriptState(Frame * frame)63 ScriptState* mainWorldScriptState(Frame* frame)
64 {
65 JSDOMWindowShell* shell = frame->script()->windowShell(mainThreadNormalWorld());
66 return shell->window()->globalExec();
67 }
68
scriptStateFromNode(DOMWrapperWorld * world,Node * node)69 ScriptState* scriptStateFromNode(DOMWrapperWorld* world, Node* node)
70 {
71 if (!node)
72 return 0;
73 Document* document = node->document();
74 if (!document)
75 return 0;
76 Frame* frame = document->frame();
77 if (!frame)
78 return 0;
79 if (!frame->script()->canExecuteScripts(NotAboutToExecuteScript))
80 return 0;
81 return frame->script()->globalObject(world)->globalExec();
82 }
83
scriptStateFromPage(DOMWrapperWorld * world,Page * page)84 ScriptState* scriptStateFromPage(DOMWrapperWorld* world, Page* page)
85 {
86 return page->mainFrame()->script()->globalObject(world)->globalExec();
87 }
88
89 #if ENABLE(WORKERS)
scriptStateFromWorkerContext(WorkerContext * workerContext)90 ScriptState* scriptStateFromWorkerContext(WorkerContext* workerContext)
91 {
92 return workerContext->script()->workerContextWrapper()->globalExec();
93 }
94 #endif
95
96 }
97