components/bubble/bubble_controller.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_BUBBLE_BUBBLE_CONTROLLER_H_
   6 #define COMPONENTS_BUBBLE_BUBBLE_CONTROLLER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "base/threading/thread_checker.h"
  11 #include "components/bubble/bubble_close_reason.h"
  12
  13 class BubbleDelegate;
  14 class BubbleManager;
  15 class BubbleUi;
  16
  17 // BubbleController is responsible for the lifetime of the delegate and its UI.
  18 class BubbleController : public base::SupportsWeakPtr<BubbleController> {
  19  public:
  20   explicit BubbleController(BubbleManager* manager,
  21                             scoped_ptr<BubbleDelegate> delegate);
  22   virtual ~BubbleController();
  23
  24   // Calls CloseBubble on the associated BubbleManager.
  25   bool CloseBubble(BubbleCloseReason reason);
  26
  27   // Calls UpdateBubbleUi on the associated BubbleManager.
  28   // Returns true if the UI was updated.
  29   bool UpdateBubbleUi();
  30
  31  private:
  32   friend class BubbleManager;
  33
  34   // Creates and shows the UI for the delegate.
  35   void Show();
  36
  37   // Notifies the bubble UI that it should update its anchor location.
  38   // Important when there's a UI change (ex: fullscreen transition).
  39   void UpdateAnchorPosition();
  40
  41   // Cleans up the delegate and its UI if it closed.
  42   // Returns true if the bubble was closed.
  43   bool ShouldClose(BubbleCloseReason reason);
  44
  45   BubbleManager* manager_;
  46   scoped_ptr<BubbleDelegate> delegate_;
  47   scoped_ptr<BubbleUi> bubble_ui_;
  48
  49   // Verify that functions that affect the UI are done on the same thread.
  50   base::ThreadChecker thread_checker_;
  51
  52   DISALLOW_COPY_AND_ASSIGN(BubbleController);
  53 };
  54
  55 #endif  // COMPONENTS_BUBBLE_BUBBLE_CONTROLLER_H_