ui/app_list/views/start_page_view.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_START_PAGE_VIEW_H_
   6 #define UI_APP_LIST_VIEWS_START_PAGE_VIEW_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "ui/app_list/app_list_export.h"
  11 #include "ui/app_list/app_list_model.h"
  12 #include "ui/app_list/app_list_view_delegate_observer.h"
  13 #include "ui/app_list/views/search_box_view_delegate.h"
  14 #include "ui/base/models/list_model_observer.h"
  15 #include "ui/views/view.h"
  16
  17 namespace app_list {
  18
  19 class AppListMainView;
  20 class AppListViewDelegate;
  21 class SearchResultListView;
  22 class TileItemView;
  23
  24 // The start page for the experimental app list.
  25 class APP_LIST_EXPORT StartPageView : public views::View,
  26                                       public ui::ListModelObserver,
  27                                       public SearchBoxViewDelegate,
  28                                       public AppListViewDelegateObserver {
  29  public:
  30   StartPageView(AppListMainView* app_list_main_view,
  31                 AppListViewDelegate* view_delegate);
  32   virtual ~StartPageView();
  33
  34   void Reset();
  35   void ShowSearchResults();
  36
  37   bool IsShowingSearchResults() const;
  38
  39   void UpdateForTesting();
  40
  41   const std::vector<TileItemView*>& tile_views() const { return tile_views_; }
  42   SearchBoxView* dummy_search_box_view() { return search_box_view_; }
  43
  44   // Overridden from views::View:
  45   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
  46   virtual void Layout() OVERRIDE;
  47
  48  private:
  49   enum ShowState {
  50     SHOW_START_PAGE,
  51     SHOW_SEARCH_RESULTS,
  52   };
  53
  54   void InitInstantContainer();
  55   void InitTilesContainer();
  56
  57   void SetShowState(ShowState show_state);
  58   void SetModel(AppListModel* model);
  59
  60   // Updates UI with model.
  61   void Update();
  62
  63   // Schedules an Update() call using |update_factory_|. Does nothing if there
  64   // is a pending call.
  65   void ScheduleUpdate();
  66
  67   // Overridden from SearchBoxViewDelegate:
  68   virtual void QueryChanged(SearchBoxView* sender) OVERRIDE;
  69
  70   // Overridden from AppListViewDelegateObserver:
  71   virtual void OnProfilesChanged() OVERRIDE;
  72
  73   // Overridden from ui::ListModelObserver:
  74   virtual void ListItemsAdded(size_t start, size_t count) OVERRIDE;
  75   virtual void ListItemsRemoved(size_t start, size_t count) OVERRIDE;
  76   virtual void ListItemMoved(size_t index, size_t target_index) OVERRIDE;
  77   virtual void ListItemsChanged(size_t start, size_t count) OVERRIDE;
  78
  79   // The parent view of ContentsView which is the parent of this view.
  80   AppListMainView* app_list_main_view_;
  81
  82   AppListModel::SearchResults*
  83       search_results_model_;  // Owned by AppListSyncableService.
  84
  85   AppListViewDelegate* view_delegate_;  // Owned by AppListView.
  86
  87   SearchBoxView* search_box_view_;      // Owned by views hierarchy.
  88   SearchResultListView* results_view_;  // Owned by views hierarchy.
  89   views::View* instant_container_;  // Owned by views hierarchy.
  90   views::View* tiles_container_;    // Owned by views hierarchy.
  91
  92   std::vector<TileItemView*> tile_views_;
  93
  94   ShowState show_state_;
  95
  96   // ScheduleUpdate() generates a single weak pointer; if one exists then an
  97   // update is pending. Further calls to ScheduleUpdate() will have no effect.
  98   // Once the Update() completes, the weak pointer is invalidated.
  99   base::WeakPtrFactory<StartPageView> update_factory_;
 100
 101   DISALLOW_COPY_AND_ASSIGN(StartPageView);
 102 };
 103
 104 }  // namespace app_list
 105
 106 #endif  // UI_APP_LIST_VIEWS_START_PAGE_VIEW_H_