Extract simpler classes for observing context lifecycle and observe Page lifecycle inNavigatorVibra…

Source/core/dom/SimpleLifecycleContext.h

+
 /*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. 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.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 WebGLContextObject_h
-#define WebGLContextObject_h
+#ifndef SimpleLifecycleContext_h
+#define SimpleLifecycleContext_h
 
-#include "core/html/canvas/WebGLObject.h"
+#include "core/dom/SimpleLifecycleObserver.h"
+#include "wtf/HashSet.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
-class GraphicsContext3D;
-class WebGLRenderingContext;
+class SimpleLifecycleNotifier;
+class SimpleLifecycleObserver;
 
-// WebGLContextObject the base class for objects that are owned by a specific
-// WebGLRenderingContext.
-class WebGLContextObject : public WebGLObject {
+class SimpleLifecycleContext {
 public:
-    virtual ~WebGLContextObject();
+    SimpleLifecycleContext();
+    virtual ~SimpleLifecycleContext();
 
-    WebGLRenderingContext* context() const { return m_context; }
+    virtual bool isContextThread() const { return true; }
 
-    virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContext* context) const
-    {
-        return context == m_context;
-    }
+    // Called from the constructor of observers.
+    void wasObservedBy(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type);
 
-    void detachContext();
+    // Called from the destructor of observers.
+    void wasUnobservedBy(SimpleLifecycleObserver*, SimpleLifecycleObserver::Type);
 
 protected:
-    WebGLContextObject(WebGLRenderingContext*);
-
-    virtual bool hasGroupOrContext() const
-    {
-        return m_context;
-    }
-
-    virtual GraphicsContext3D* getAGraphicsContext3D() const;
+    SimpleLifecycleNotifier* lifecycleNotifier();
 
 private:
-    WebGLRenderingContext* m_context;
+    virtual PassOwnPtr<SimpleLifecycleNotifier> createLifecycleNotifier();
+
+    OwnPtr<SimpleLifecycleNotifier> m_lifecycleNotifier;
 };
 
 } // namespace WebCore
 
-#endif // WebGLContextObject_h
+#endif // SimpleLifecycleContext_h