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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_LOADER_RENDER_VIEW_HOST_TRACKER_H_
#define CONTENT_BROWSER_LOADER_RENDER_VIEW_HOST_TRACKER_H_
#include <set>
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_view_host_observer.h"
namespace content {
// The ResourceDispatcherHost needs to know when renderers are created and
// destroyed. That happens on the UI thread, but the ResourceDispatcherHost
// operates on the IO thread. RenderViewHostTracker listens for renderer
// notifications on the UI thread, then bounces them over to the IO thread so
// the ResourceDispatcherHost can be notified.
class CONTENT_EXPORT RenderViewHostTracker {
public:
RenderViewHostTracker();
virtual ~RenderViewHostTracker();
private:
// TODO(phajdan.jr): Move this declaration of inner class to the .cc file.
class Observer : public RenderViewHostObserver {
public:
Observer(RenderViewHost* rvh,
RenderViewHostTracker* tracker);
virtual ~Observer();
private:
// RenderViewHostObserver interface:
virtual void RenderViewHostDestroyed(RenderViewHost* rvh) OVERRIDE;
RenderViewHostTracker* tracker_;
};
friend class Observer;
typedef std::set<Observer*> ObserverSet;
void RenderViewHostCreated(RenderViewHost* rvh);
void RemoveObserver(Observer* observer);
RenderViewHost::CreatedCallback rvh_created_callback_;
ObserverSet observers_;
};
} // namespace content
#endif // CONTENT_BROWSER_LOADER_RENDER_VIEW_HOST_TRACKER_H_
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