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