| /* |
| * Copyright (C) 2008, 2009, 2011 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 "bindings/v8/ScopedPersistent.h" |
| #include <v8.h> |
| #include "wtf/Noncopyable.h" |
| |
| namespace WebCore { |
| |
| class DOMWindow; |
| class DOMWrapperWorld; |
| class LocalFrame; |
| class ExecutionContext; |
| class WorkerGlobalScope; |
| |
| // FIXME: ScriptState is deprecated and going to be removed. Use NewScriptState instead. |
| class ScriptState { |
| WTF_MAKE_NONCOPYABLE(ScriptState); |
| public: |
| v8::Local<v8::Context> context() const |
| { |
| return m_context.newLocal(m_isolate); |
| } |
| |
| v8::Isolate* isolate() |
| { |
| return m_isolate; |
| } |
| |
| DOMWindow* domWindow() const; |
| ExecutionContext* executionContext() const; |
| bool evalEnabled() const; |
| void setEvalEnabled(bool); |
| |
| static ScriptState* forContext(v8::Handle<v8::Context>); |
| static ScriptState* current(); |
| |
| protected: |
| ScriptState() |
| : m_isolate(v8::Isolate::GetCurrent()) |
| { |
| } |
| |
| ~ScriptState(); |
| |
| private: |
| friend ScriptState* mainWorldScriptState(LocalFrame*); |
| explicit ScriptState(v8::Handle<v8::Context>); |
| |
| static void setWeakCallback(const v8::WeakCallbackData<v8::Context, ScriptState>&); |
| |
| ScopedPersistent<v8::Value> m_exception; |
| ScopedPersistent<v8::Context> m_context; |
| v8::Isolate* m_isolate; |
| }; |
| |
| class ScriptStateProtectedPtr { |
| WTF_MAKE_NONCOPYABLE(ScriptStateProtectedPtr); |
| public: |
| ScriptStateProtectedPtr() |
| : m_scriptState(0) |
| { |
| } |
| |
| ScriptStateProtectedPtr(ScriptState* scriptState) |
| : m_scriptState(scriptState) |
| { |
| if (!scriptState) |
| return; |
| |
| v8::HandleScope handleScope(scriptState->isolate()); |
| // Keep the context from being GC'ed. ScriptState is guaranteed to be live while the context is live. |
| m_context.set(scriptState->isolate(), scriptState->context()); |
| } |
| |
| ScriptState* get() const { return m_scriptState; } |
| |
| void clear() |
| { |
| if (!m_scriptState) |
| return; |
| |
| m_context.clear(); |
| m_scriptState = 0; |
| } |
| |
| private: |
| ScriptState* m_scriptState; |
| ScopedPersistent<v8::Context> m_context; |
| }; |
| |
| ScriptState* mainWorldScriptState(LocalFrame*); |
| |
| ScriptState* scriptStateFromWorkerGlobalScope(WorkerGlobalScope*); |
| |
| } |
| |
| #endif // ScriptState_h |