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      1 // Copyright (c) 2012 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_SEARCH_RESULT_LIST_VIEW_H_
      6 #define UI_APP_LIST_VIEWS_SEARCH_RESULT_LIST_VIEW_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/memory/weak_ptr.h"
     10 #include "ui/app_list/app_list_model.h"
     11 #include "ui/base/models/list_model_observer.h"
     12 #include "ui/gfx/animation/animation_delegate.h"
     13 #include "ui/views/view.h"
     14 
     15 namespace gfx {
     16 class LinearAnimation;
     17 }
     18 
     19 namespace app_list {
     20 namespace test {
     21 class SearchResultListViewTest;
     22 }
     23 
     24 class AppListViewDelegate;
     25 class SearchResultListViewDelegate;
     26 class SearchResultView;
     27 
     28 // SearchResultListView displays SearchResultList with a list of
     29 // SearchResultView.
     30 class APP_LIST_EXPORT SearchResultListView : public views::View,
     31                                              public gfx::AnimationDelegate,
     32                                              public ui::ListModelObserver {
     33  public:
     34   SearchResultListView(SearchResultListViewDelegate* delegate,
     35                        AppListViewDelegate* view_delegate);
     36   virtual ~SearchResultListView();
     37 
     38   void SetResults(AppListModel::SearchResults* results);
     39 
     40   void SetSelectedIndex(int selected_index);
     41 
     42   void UpdateAutoLaunchState();
     43 
     44   bool IsResultViewSelected(const SearchResultView* result_view) const;
     45 
     46   void SearchResultActivated(SearchResultView* view, int event_flags);
     47 
     48   void SearchResultActionActivated(SearchResultView* view,
     49                                    size_t action_index,
     50                                    int event_flags);
     51 
     52   void OnSearchResultInstalled(SearchResultView* view);
     53 
     54   void OnSearchResultUninstalled(SearchResultView* view);
     55 
     56   // Overridden from views::View:
     57   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
     58   virtual gfx::Size GetPreferredSize() const OVERRIDE;
     59 
     60  private:
     61   friend class test::SearchResultListViewTest;
     62 
     63   // Updates the auto launch states.
     64   void SetAutoLaunchTimeout(const base::TimeDelta& timeout);
     65   void CancelAutoLaunchTimeout();
     66 
     67   // Helper function to get SearchResultView at given |index|.
     68   SearchResultView* GetResultViewAt(int index);
     69 
     70   // Updates UI with model.
     71   void Update();
     72 
     73   // Schedules an Update call using |update_factory_|. Do nothing if there is a
     74   // pending call.
     75   void ScheduleUpdate();
     76 
     77   // Forcibly auto-launch for test if it is in auto-launching state.
     78   void ForceAutoLaunchForTest();
     79 
     80   // Overridden from views::View:
     81   virtual void Layout() OVERRIDE;
     82   virtual int GetHeightForWidth(int w) const OVERRIDE;
     83   virtual void VisibilityChanged(
     84       views::View* starting_from, bool is_visible) OVERRIDE;
     85 
     86   // Overridden from gfx::AnimationDelegate:
     87   virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
     88   virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
     89 
     90   // Overridden from ui::ListModelObserver:
     91   virtual void ListItemsAdded(size_t start, size_t count) OVERRIDE;
     92   virtual void ListItemsRemoved(size_t start, size_t count) OVERRIDE;
     93   virtual void ListItemMoved(size_t index, size_t target_index) OVERRIDE;
     94   virtual void ListItemsChanged(size_t start, size_t count) OVERRIDE;
     95 
     96   SearchResultListViewDelegate* delegate_;  // Not owned.
     97   AppListViewDelegate* view_delegate_;  // Not owned.
     98   AppListModel::SearchResults* results_;  // Owned by AppListModel.
     99 
    100   views::View* results_container_;
    101   views::View* auto_launch_indicator_;
    102   scoped_ptr<gfx::LinearAnimation> auto_launch_animation_;
    103 
    104   int last_visible_index_;
    105   int selected_index_;
    106 
    107   // The factory that consolidates multiple Update calls into one.
    108   base::WeakPtrFactory<SearchResultListView> update_factory_;
    109 
    110   DISALLOW_COPY_AND_ASSIGN(SearchResultListView);
    111 };
    112 
    113 }  // namespace app_list
    114 
    115 #endif  // UI_APP_LIST_VIEWS_SEARCH_RESULT_LIST_VIEW_H_
    116