ui/app_list/views/apps_container_view.h

   1 // Copyright 2013 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_CONTAINER_VIEW_H_
   6 #define UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_
   7
   8 #include <vector>
   9
  10 #include "ui/app_list/app_list_folder_item.h"
  11 #include "ui/app_list/views/top_icon_animation_view.h"
  12 #include "ui/views/view.h"
  13
  14 namespace app_list {
  15
  16 class AppsGridView;
  17 class ApplicationDragAndDropHost;
  18 class AppListFolderItem;
  19 class AppListFolderView;
  20 class AppListMainView;
  21 class AppListModel;
  22 class ContentsView;
  23 class FolderBackgroundView;
  24
  25 // AppsContainerView contains a root level AppsGridView to render the root level
  26 // app items, and a AppListFolderView to render the app items inside the
  27 // active folder. Only one if them is visible to user at any time.
  28 class AppsContainerView : public views::View,
  29                           public TopIconAnimationObserver {
  30  public:
  31   AppsContainerView(AppListMainView* app_list_main_view,
  32                     AppListModel* model);
  33   virtual ~AppsContainerView();
  34
  35   // Shows the active folder content specified by |folder_item|.
  36   void ShowActiveFolder(AppListFolderItem* folder_item);
  37
  38   // Shows the root level apps list. This is called when UI navigate back from
  39   // a folder view with |folder_item|. If |folder_item| is NULL skips animation.
  40   void ShowApps(AppListFolderItem* folder_item);
  41
  42   // Resets the app list to a state where it shows the main grid view. This is
  43   // called when the user opens the launcher for the first time or when the user
  44   // hides and then shows it. This is necessary because we only hide and show
  45   // the launcher on Windows and Linux so we need to reset to a fresh state.
  46   void ResetForShowApps();
  47
  48   // Sets |drag_and_drop_host_| for the current app list in both
  49   // app_list_folder_view_ and root level apps_grid_view_.
  50   void SetDragAndDropHostOfCurrentAppList(
  51       ApplicationDragAndDropHost* drag_and_drop_host);
  52
  53   // Transits the UI from folder view to root lelve apps grid view when
  54   // re-parenting a child item of |folder_item|.
  55   void ReparentFolderItemTransit(AppListFolderItem* folder_item);
  56
  57   // Returns true if it is currently showing an active folder page.
  58   bool IsInFolderView() const;
  59
  60   // views::View overrides:
  61   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  62   virtual void Layout() OVERRIDE;
  63   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
  64
  65   // TopIconAnimationObserver overrides:
  66   virtual void OnTopIconAnimationsComplete() OVERRIDE;
  67
  68   AppsGridView* apps_grid_view() { return apps_grid_view_; }
  69   FolderBackgroundView* folder_background_view() {
  70      return folder_background_view_;
  71   }
  72   AppListFolderView* app_list_folder_view() { return app_list_folder_view_; }
  73
  74  private:
  75   enum ShowState {
  76     SHOW_NONE,  // initial state
  77     SHOW_APPS,
  78     SHOW_ACTIVE_FOLDER,
  79     SHOW_ITEM_REPARENT,
  80   };
  81
  82   void SetShowState(ShowState show_state, bool show_apps_with_animation);
  83
  84   // Calculates the top item icon bounds in the active folder icon. The bounds
  85   // is relative to AppsContainerView.
  86   // Returns the bounds of top items' icon in sequence of top left, top right,
  87   // bottom left, bottom right.
  88   Rects GetTopItemIconBoundsInActiveFolder();
  89
  90   // Creates the transitional views for animating the top items in the folder
  91   // when opening or closing a folder.
  92   void CreateViewsForFolderTopItemsAnimation(
  93       AppListFolderItem* active_folder, bool open_folder);
  94
  95   void PrepareToShowApps(AppListFolderItem* folder_item);
  96
  97   AppListModel* model_;
  98   AppsGridView* apps_grid_view_;  // Owned by views hierarchy.
  99   AppListFolderView* app_list_folder_view_;  // Owned by views hierarchy.
 100   FolderBackgroundView* folder_background_view_;  // Owned by views hierarchy.
 101   ShowState show_state_;
 102
 103   // The transitional views for animating the top items in folder
 104   // when opening or closing a folder.
 105   std::vector<views::View*> top_icon_views_;
 106
 107   size_t top_icon_animation_pending_count_;
 108
 109   DISALLOW_COPY_AND_ASSIGN(AppsContainerView);
 110 };
 111
 112 }  // namespace app_list
 113
 114
 115 #endif  // UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_