ui/app_list/views/apps_grid_view_folder_delegate.h

   1 // Copyright 2014 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 UI_APP_LIST_VIEWS_APPS_GRID_VIEW_FOLDER_DELEGATE_H_
   6 #define UI_APP_LIST_VIEWS_APPS_GRID_VIEW_FOLDER_DELEGATE_H_
   7
   8 #include "ui/app_list/app_list_export.h"
   9 #include "ui/app_list/views/apps_grid_view.h"
  10
  11 namespace gfx {
  12 class Point;
  13 }
  14
  15 namespace ui {
  16 class LocatedEvent;
  17 }
  18
  19 namespace app_list {
  20
  21 class AppListItemView;
  22
  23 // A delegate which allows an AppsGridView to communicate with its host folder.
  24 class APP_LIST_EXPORT AppsGridViewFolderDelegate {
  25  public:
  26   // Updates the folder view background to show or hide folder container ink
  27   // bubble.
  28   virtual void UpdateFolderViewBackground(bool show_bubble) = 0;
  29
  30   // Called when a folder item is dragged out of the folder to be re-parented.
  31   // |original_drag_view| is the |drag_view_| inside the folder's grid view.
  32   // |drag_point_in_folder_grid| is the last drag point in coordinate of the
  33   // AppsGridView inside the folder.
  34   virtual void ReparentItem(AppListItemView* original_drag_view,
  35                             const gfx::Point& drag_point_in_folder_grid) = 0;
  36
  37   // Dispatches drag event from the hidden grid view to the root level grid view
  38   // for re-parenting a folder item.
  39   virtual void DispatchDragEventForReparent(
  40       AppsGridView::Pointer pointer,
  41       const gfx::Point& drag_point_in_folder_grid) = 0;
  42
  43   // Dispatches EndDrag event from the hidden grid view to the root level grid
  44   // view for reparenting a folder item.
  45   // |events_forwarded_to_drag_drop_host|: True if the dragged item is dropped
  46   // to the drag_drop_host, eg. dropped on shelf.
  47   // |cancel_drag|: True if the drag is ending because it has been canceled.
  48   virtual void DispatchEndDragEventForReparent(
  49       bool events_forwarded_to_drag_drop_host,
  50       bool cancel_drag) = 0;
  51
  52   // Returns true if |point| falls outside of the folder container ink bubble.
  53   virtual bool IsPointOutsideOfFolderBoundary(const gfx::Point& point) = 0;
  54
  55   // Returns true if the associated folder item is an OEM folder.
  56   virtual bool IsOEMFolder() const = 0;
  57
  58   // Hides or show the root level's grid view. This is needed so that the
  59   // synchronous drag has an icon for reparenting while it loads.
  60   virtual void SetRootLevelDragViewVisible(bool visible) = 0;
  61
  62  protected:
  63   virtual ~AppsGridViewFolderDelegate() {}
  64 };
  65
  66 }  // namespace app_list
  67
  68 #endif  // UI_APP_LIST_VIEWS_APPS_GRID_VIEW_FOLDER_DELEGATE_H_