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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 CHROME_BROWSER_EXTENSIONS_EXTENSION_RENDERER_STATE_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_RENDERER_STATE_H_
#include <map>
#include <set>
#include <string>
#include <utility>
#include "base/macros.h"
#include "base/memory/singleton.h"
namespace content {
class ResourceRequestInfo;
}
// This class keeps track of renderer state for use on the IO thread. All
// methods should be called on the IO thread except for Init and Shutdown.
class ExtensionRendererState {
public:
static ExtensionRendererState* GetInstance();
// These are called on the UI thread to start and stop listening to tab
// notifications.
void Init();
void Shutdown();
// Looks up the tab and window ID for a given request. Returns true if we have
// the IDs in our map. Called on the IO thread.
bool GetTabAndWindowId(
const content::ResourceRequestInfo* info, int* tab_id, int* window_id);
private:
class RenderViewHostObserver;
class TabObserver;
friend class TabObserver;
friend struct base::DefaultSingletonTraits<ExtensionRendererState>;
typedef std::pair<int, int> RenderId;
typedef std::pair<int, int> TabAndWindowId;
typedef std::map<RenderId, TabAndWindowId> TabAndWindowIdMap;
ExtensionRendererState();
~ExtensionRendererState();
// Adds or removes a render view from our map.
void SetTabAndWindowId(
int render_process_host_id, int routing_id, int tab_id, int window_id);
void ClearTabAndWindowId(
int render_process_host_id, int routing_id);
TabObserver* observer_;
TabAndWindowIdMap map_;
DISALLOW_COPY_AND_ASSIGN(ExtensionRendererState);
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_RENDERER_STATE_H_
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