2 * Copyright (C) 2008, 2009, 2011 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
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
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.
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.
34 #include "DOMWrapperWorld.h"
36 #include <wtf/Noncopyable.h>
37 #include <wtf/RefCounted.h>
41 class DOMWrapperWorld;
48 WTF_MAKE_NONCOPYABLE(ScriptState);
50 bool hadException() { return !m_exception.IsEmpty(); }
51 void setException(v8::Local<v8::Value> exception)
53 m_exception = exception;
55 v8::Local<v8::Value> exception() { return m_exception; }
57 v8::Local<v8::Context> context() const
59 return v8::Local<v8::Context>::New(m_context);
62 DOMWindow* domWindow() const;
64 static ScriptState* forContext(v8::Local<v8::Context>);
65 static ScriptState* current();
72 friend ScriptState* mainWorldScriptState(Frame*);
73 explicit ScriptState(v8::Handle<v8::Context>);
75 static void weakReferenceCallback(v8::Persistent<v8::Value> object, void* parameter);
77 v8::Local<v8::Value> m_exception;
78 v8::Persistent<v8::Context> m_context;
81 class EmptyScriptState : public ScriptState {
83 EmptyScriptState() : ScriptState() { }
84 ~EmptyScriptState() { }
87 class ScriptStateProtectedPtr {
88 WTF_MAKE_NONCOPYABLE(ScriptStateProtectedPtr);
90 ScriptStateProtectedPtr() : m_scriptState(0) { }
91 ScriptStateProtectedPtr(ScriptState* scriptState) : m_scriptState(scriptState)
93 v8::HandleScope handleScope;
94 // Keep the context from being GC'ed. ScriptState is guaranteed to be live while the context is live.
95 m_context = v8::Persistent<v8::Context>::New(scriptState->context());
97 ~ScriptStateProtectedPtr()
99 if (!m_context.IsEmpty()) {
104 ScriptState* get() const { return m_scriptState; }
106 ScriptState* m_scriptState;
107 v8::Persistent<v8::Context> m_context;
110 DOMWindow* domWindowFromScriptState(ScriptState*);
112 ScriptState* mainWorldScriptState(Frame*);
114 ScriptState* scriptStateFromNode(DOMWrapperWorld*, Node*);
115 ScriptState* scriptStateFromPage(DOMWrapperWorld*, Page*);
118 ScriptState* scriptStateFromWorkerContext(WorkerContext*);
121 inline DOMWrapperWorld* debuggerWorld() { return mainThreadNormalWorld(); }
122 inline DOMWrapperWorld* pluginWorld() { return mainThreadNormalWorld(); }
126 #endif // ScriptState_h