--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/v8/ScriptState.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ScriptState_h
+#define ScriptState_h
+
+#include "DOMWrapperWorld.h"
+#include <v8.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/RefCounted.h>
+
+namespace WebCore {
+class DOMWrapperWorld;
+class Frame;
+class Node;
+class Page;
+
+class ScriptState : public Noncopyable {
+public:
+ bool hadException() { return !m_exception.IsEmpty(); }
+ void setException(v8::Local<v8::Value> exception)
+ {
+ m_exception = exception;
+ }
+ v8::Local<v8::Value> exception() { return m_exception; }
+
+ v8::Local<v8::Context> context() const
+ {
+ return v8::Local<v8::Context>::New(m_context);
+ }
+
+ static ScriptState* forContext(v8::Local<v8::Context>);
+ static ScriptState* current();
+
+protected:
+ ScriptState() { }
+ ~ScriptState();
+
+private:
+ friend ScriptState* mainWorldScriptState(Frame*);
+ explicit ScriptState(v8::Handle<v8::Context>);
+
+ static void weakReferenceCallback(v8::Persistent<v8::Value> object, void* parameter);
+
+ v8::Local<v8::Value> m_exception;
+ v8::Persistent<v8::Context> m_context;
+};
+
+class EmptyScriptState : public ScriptState {
+public:
+ EmptyScriptState() : ScriptState() { }
+ ~EmptyScriptState() { }
+};
+
+class ScriptStateProtectedPtr : public Noncopyable {
+public:
+ ScriptStateProtectedPtr() : m_scriptState(0) { }
+ ScriptStateProtectedPtr(ScriptState* scriptState) : m_scriptState(scriptState)
+ {
+ v8::HandleScope handleScope;
+ // Keep the context from being GC'ed. ScriptState is guaranteed to be live while the context is live.
+ m_context = v8::Persistent<v8::Context>::New(scriptState->context());
+ }
+ ~ScriptStateProtectedPtr()
+ {
+ if (!m_context.IsEmpty()) {
+ m_context.Dispose();
+ m_context.Clear();
+ }
+ }
+ ScriptState* get() { return m_scriptState; }
+private:
+ ScriptState* m_scriptState;
+ v8::Persistent<v8::Context> m_context;
+};
+
+ScriptState* mainWorldScriptState(Frame*);
+
+ScriptState* scriptStateFromNode(DOMWrapperWorld*, Node*);
+ScriptState* scriptStateFromPage(DOMWrapperWorld*, Page*);
+
+inline DOMWrapperWorld* debuggerWorld() { return mainThreadNormalWorld(); }
+inline DOMWrapperWorld* pluginWorld() { return mainThreadNormalWorld(); }
+
+}
+
+#endif // ScriptState_h