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/app_list_page.h"
  12 #include "ui/app_list/views/top_icon_animation_view.h"
  13
  14 namespace gfx {
  15 class Rect;
  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
  29 // AppsContainerView contains a root level AppsGridView to render the root level
  30 // app items, and a AppListFolderView to render the app items inside the
  31 // active folder. Only one if them is visible to user at any time.
  32 class AppsContainerView : public AppListPage, public TopIconAnimationObserver {
  33  public:
  34   AppsContainerView(AppListMainView* app_list_main_view,
  35                     AppListModel* model);
  36   ~AppsContainerView() override;
  37
  38   // Shows the active folder content specified by |folder_item|.
  39   void ShowActiveFolder(AppListFolderItem* folder_item);
  40
  41   // Shows the root level apps list. This is called when UI navigate back from
  42   // a folder view with |folder_item|. If |folder_item| is NULL skips animation.
  43   void ShowApps(AppListFolderItem* folder_item);
  44
  45   // Resets the app list to a state where it shows the main grid view. This is
  46   // called when the user opens the launcher for the first time or when the user
  47   // hides and then shows it. This is necessary because we only hide and show
  48   // the launcher on Windows and Linux so we need to reset to a fresh state.
  49   void ResetForShowApps();
  50
  51   // Sets |drag_and_drop_host_| for the current app list in both
  52   // app_list_folder_view_ and root level apps_grid_view_.
  53   void SetDragAndDropHostOfCurrentAppList(
  54       ApplicationDragAndDropHost* drag_and_drop_host);
  55
  56   // Transits the UI from folder view to root lelve apps grid view when
  57   // re-parenting a child item of |folder_item|.
  58   void ReparentFolderItemTransit(AppListFolderItem* folder_item);
  59
  60   // Returns true if it is currently showing an active folder page.
  61   bool IsInFolderView() const;
  62
  63   // Called to notify the AppsContainerView that a reparent drag has completed.
  64   void ReparentDragEnded();
  65
  66   // views::View overrides:
  67   gfx::Size GetPreferredSize() const override;
  68   void Layout() override;
  69   bool OnKeyPressed(const ui::KeyEvent& event) override;
  70
  71   // AppListPage overrides:
  72   void OnWillBeShown() override;
  73   gfx::Rect GetPageBoundsForState(AppListModel::State state) const override;
  74
  75   // TopIconAnimationObserver overrides:
  76   void OnTopIconAnimationsComplete() override;
  77
  78   AppsGridView* apps_grid_view() { return apps_grid_view_; }
  79   FolderBackgroundView* folder_background_view() {
  80      return folder_background_view_;
  81   }
  82   AppListFolderView* app_list_folder_view() { return app_list_folder_view_; }
  83
  84  private:
  85   enum ShowState {
  86     SHOW_NONE,  // initial state
  87     SHOW_APPS,
  88     SHOW_ACTIVE_FOLDER,
  89     SHOW_ITEM_REPARENT,
  90   };
  91
  92   void SetShowState(ShowState show_state, bool show_apps_with_animation);
  93
  94   // Calculates the top item icon bounds in the active folder icon. The bounds
  95   // is relative to AppsContainerView.
  96   // Returns the bounds of top items' icon in sequence of top left, top right,
  97   // bottom left, bottom right.
  98   std::vector<gfx::Rect> GetTopItemIconBoundsInActiveFolder();
  99
 100   // Creates the transitional views for animating the top items in the folder
 101   // when opening or closing a folder.
 102   void CreateViewsForFolderTopItemsAnimation(
 103       AppListFolderItem* active_folder, bool open_folder);
 104
 105   void PrepareToShowApps(AppListFolderItem* folder_item);
 106
 107   AppListModel* model_;
 108   AppsGridView* apps_grid_view_;  // Owned by views hierarchy.
 109   AppListFolderView* app_list_folder_view_;  // Owned by views hierarchy.
 110   FolderBackgroundView* folder_background_view_;  // Owned by views hierarchy.
 111   ShowState show_state_;
 112
 113   // The transitional views for animating the top items in folder
 114   // when opening or closing a folder.
 115   std::vector<views::View*> top_icon_views_;
 116
 117   size_t top_icon_animation_pending_count_;
 118
 119   DISALLOW_COPY_AND_ASSIGN(AppsContainerView);
 120 };
 121
 122 }  // namespace app_list
 123
 124
 125 #endif  // UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_