Implement cancel() API on a Notification object so that script can cancel or ...

chrome/browser/notifications/balloon.h

 // Copyright (c) 2009 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.
 
 // Handles the visible notification (or balloons).
 
 #ifndef CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
 #define CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
 
 #include <vector>
@@ skipping 14 matching lines @@
  public:
   virtual ~BalloonView() { }
 
   // Show the view on the screen.
   virtual void Show(Balloon* balloon) = 0;
 
   // Reposition the view to match the position of its balloon.
   virtual void RepositionToBalloon() = 0;
 
   // Close the view.
-  virtual void Close() = 0;
+  virtual void Close(bool by_user) = 0;
 };
 
 // Represents a Notification on the screen.
 class Balloon {
  public:
   class BalloonCloseListener {
    public:
     virtual ~BalloonCloseListener() {}
 
     // Called when a balloon is closed.
@@ skipping 12 matching lines @@
   const gfx::Point& position() const { return position_; }
   void SetPosition(const gfx::Point& upper_left, bool reposition);
 
   const gfx::Size& size() const { return size_; }
   void set_size(const gfx::Size& size) { size_ = size; }
 
   // Provides a view for this balloon.  Ownership transfers
   // to this object.
   void set_view(BalloonView* balloon_view);
 
+  // Shows the balloon.
   virtual void Show();
-  virtual void Close(bool by_user);
+
+  // Called when the balloon is closed, either by user (through the UI)
+  // or by a script.
+  virtual void OnClose(bool by_user);
+
+  // Called by script to cause the balloon to close.
+  virtual void CloseByScript();
 
  private:
   // Non-owned pointer to the profile.
   Profile* profile_;
 
   // The notification being shown in this balloon.
   Notification notification_;
 
   // A listener to be called when the balloon closes.
   BalloonCloseListener* close_listener_;
 
   // The actual UI element for the balloon.
   scoped_ptr<BalloonView> balloon_view_;
 
   // Position and size of the balloon on the screen.
   gfx::Point position_;
   gfx::Size size_;
 
   DISALLOW_COPY_AND_ASSIGN(Balloon);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_