text: // Copyright (c) 2012 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_UI_ANDROID_TAB_MODEL_TAB_MODEL_H_
  #define CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_H_
  
  #include "chrome/browser/sessions/session_id.h"
  
  namespace browser_sync {
  class SyncedWindowDelegate;
  }
  
  namespace content {
  class WebContents;
  }
  
  class Profile;
  class TabContents;
  
  // Abstract representation of a Tab Model for Android.  Since Android does
  // not use Browser/BrowserList, this is required to allow Chrome to interact
  // with Android's Tabs and Tab Model.
  class TabModel {
   public:
    TabModel();
    virtual ~TabModel();
  
    virtual SessionID::id_type GetSessionId() const = 0;
    virtual int GetTabCount() const = 0;
    virtual int GetActiveIndex() const = 0;
    virtual TabContents* GetTabContentsAt(int index) const = 0;
    virtual SessionID::id_type GetTabIdAt(int index) const = 0;
  
    // Used for restoring tabs from synced foreign sessions.
    virtual void CreateTab(content::WebContents* web_contents) = 0;
  
    // Return true if we are currently restoring sessions asynchronously.
    virtual bool IsSessionRestoreInProgress() const = 0;
  
    virtual void OpenClearBrowsingData() const = 0;
    virtual Profile* GetProfile() const = 0;
  
    virtual browser_sync::SyncedWindowDelegate* GetSyncedWindowDelegate() = 0;
  
   protected:
    // Instructs the TabModel to broadcast a notification that all tabs are now
    // loaded from storage.
    void BroadcastSessionRestoreComplete();
  
   private:
    DISALLOW_COPY_AND_ASSIGN(TabModel);
  };
  
  #endif  // CHROME_BROWSER_UI_ANDROID_TAB_MODEL_TAB_MODEL_H_
  