components/view_manager/view_manager_root_delegate.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_VIEW_MANAGER_VIEW_MANAGER_ROOT_DELEGATE_H_
   6 #define COMPONENTS_VIEW_MANAGER_VIEW_MANAGER_ROOT_DELEGATE_H_
   7
   8 namespace view_manager {
   9
  10 class ViewManagerServiceImpl;
  11
  12 // A ViewManagerRootDelegate interface is implemented by an object that
  13 // has the ViewManagerServiceImpl that is associated with the
  14 // ViewManagerRootImpl that holds a pointer to this object. Typically, a
  15 // ViewManagerRootDelegate will also manage the lifetime of the
  16 // ViewManagerRootImpl and will delete the object when it gets informed of
  17 // when the Display of the root is closed.
  18 class ViewManagerRootDelegate {
  19  public:
  20   // Called when the window associated with the root is completely initialized
  21   // (i.e. the ViewportMetrics for the display is known).
  22   virtual void OnDisplayInitialized() = 0;
  23
  24   // Called when the window associated with the root is closed.
  25   virtual void OnDisplayClosed() = 0;
  26
  27   // Returns the ViewManagerServiceImpl associated with the delegate.
  28   virtual ViewManagerServiceImpl* GetViewManagerService() = 0;
  29
  30  protected:
  31   virtual ~ViewManagerRootDelegate() {}
  32 };
  33
  34 }  // namespace view_manager
  35
  36 #endif  // COMPONENTS_VIEW_MANAGER_VIEW_MANAGER_ROOT_DELEGATE_H_