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 content {
  15 class WebContents;
  16 }
  17
  18 namespace app_list {
  19
  20 class AppsGridView;
  21 class ApplicationDragAndDropHost;
  22 class AppListFolderItem;
  23 class AppListFolderView;
  24 class AppListMainView;
  25 class AppListModel;
  26 class ContentsView;
  27 class FolderBackgroundView;
  28 class PaginationModel;
  29
  30 // AppsContainerView contains a root level AppsGridView to render the root level
  31 // app items, and a AppListFolderView to render the app items inside the
  32 // active folder. Only one if them is visible to user at any time.
  33 class AppsContainerView : public views::View,
  34                           public TopIconAnimationObserver {
  35  public:
  36   AppsContainerView(AppListMainView* app_list_main_view,
  37                     PaginationModel* pagination_model,
  38                     AppListModel* model);
  39   virtual ~AppsContainerView();
  40
  41   // Shows the active folder content specified by |folder_item|.
  42   void ShowActiveFolder(AppListFolderItem* folder_item);
  43
  44   // Shows the root level apps list. This is called when UI navigate back from
  45   // a folder view with |folder_item|. If |folder_item| is NULL skips animation.
  46   void ShowApps(AppListFolderItem* folder_item);
  47
  48   // Resets the app list to a state where it shows the main grid view. This is
  49   // called when the user opens the launcher for the first time or when the user
  50   // hides and then shows it. This is necessary because we only hide and show
  51   // the launcher on Windows and Linux so we need to reset to a fresh state.
  52   void ResetForShowApps();
  53
  54   // Sets |drag_and_drop_host_| for the current app list in both
  55   // app_list_folder_view_ and root level apps_grid_view_.
  56   void SetDragAndDropHostOfCurrentAppList(
  57       ApplicationDragAndDropHost* drag_and_drop_host);
  58
  59   // Transits the UI from folder view to root lelve apps grid view when
  60   // re-parenting a child item of |folder_item|.
  61   void ReparentFolderItemTransit(AppListFolderItem* folder_item);
  62
  63   // Returns true if it is currently showing an active folder page.
  64   bool IsInFolderView() const;
  65
  66   // views::View overrides:
  67   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  68   virtual void Layout() OVERRIDE;
  69   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
  70
  71   // TopIconAnimationObserver overrides:
  72   virtual void OnTopIconAnimationsComplete() OVERRIDE;
  73
  74   AppsGridView* apps_grid_view() { return apps_grid_view_; }
  75   FolderBackgroundView* folder_background_view() {
  76      return folder_background_view_;
  77   }
  78   AppListFolderView* app_list_folder_view() { return app_list_folder_view_; }
  79
  80  private:
  81   enum ShowState {
  82     SHOW_NONE,  // initial state
  83     SHOW_APPS,
  84     SHOW_ACTIVE_FOLDER,
  85     SHOW_ITEM_REPARENT,
  86   };
  87
  88   void SetShowState(ShowState show_state, bool show_apps_with_animation);
  89
  90   // Calculates the top item icon bounds in the active folder icon. The bounds
  91   // is relative to AppsContainerView.
  92   // Returns the bounds of top items' icon in sequence of top left, top right,
  93   // bottom left, bottom right.
  94   Rects GetTopItemIconBoundsInActiveFolder();
  95
  96   // Creates the transitional views for animating the top items in the folder
  97   // when opening or closing a folder.
  98   void CreateViewsForFolderTopItemsAnimation(
  99       AppListFolderItem* active_folder, bool open_folder);
 100
 101   void PrepareToShowApps(AppListFolderItem* folder_item);
 102
 103   AppListModel* model_;
 104   AppsGridView* apps_grid_view_;  // Owned by views hierarchy.
 105   AppListFolderView* app_list_folder_view_;  // Owned by views hierarchy.
 106   FolderBackgroundView* folder_background_view_;  // Owned by views hierarchy.
 107   ShowState show_state_;
 108
 109   // The transitional views for animating the top items in folder
 110   // when opening or closing a folder.
 111   std::vector<views::View*> top_icon_views_;
 112
 113   size_t top_icon_animation_pending_count_;
 114
 115   DISALLOW_COPY_AND_ASSIGN(AppsContainerView);
 116 };
 117
 118 }  // namespace app_list
 119
 120
 121 #endif  // UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_