athena/home/athena_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 ATHENA_HOME_ATHENA_START_PAGE_VIEW_H_
   6 #define ATHENA_HOME_ATHENA_START_PAGE_VIEW_H_
   7
   8 #include "athena/athena_export.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "ui/app_list/views/search_box_view_delegate.h"
  11 #include "ui/gfx/animation/tween.h"
  12 #include "ui/views/view.h"
  13
  14 namespace app_list {
  15 class AppListViewDelegate;
  16 class SearchBoxView;
  17 class SearchResultListView;
  18 }
  19
  20 namespace athena {
  21
  22 class ATHENA_EXPORT AthenaStartPageView
  23     : public views::View,
  24       public app_list::SearchBoxViewDelegate {
  25  public:
  26   explicit AthenaStartPageView(app_list::AppListViewDelegate* delegate);
  27   virtual ~AthenaStartPageView();
  28
  29   // Requests the focus on the search box in the start page view.
  30   void RequestFocusOnSearchBox();
  31
  32   // Updates the layout state. See the comment of |layout_state_| field.
  33   void SetLayoutState(float layout_state);
  34
  35   // Updates the layout state and move the subviews to the target location with
  36   // animation.
  37   void SetLayoutStateWithAnimation(float layout_state,
  38                                    gfx::Tween::Type tween_type);
  39
  40  private:
  41   friend class AthenaStartPageViewTest;
  42
  43   static const char kViewClassName[];
  44
  45   // A struct which bundles the layout data of subviews.
  46   struct LayoutData {
  47     gfx::Rect search_box;
  48     gfx::Rect icons;
  49     gfx::Rect controls;
  50     float system_info_opacity;
  51     float logo_opacity;
  52     float background_opacity;
  53
  54     LayoutData();
  55   };
  56
  57   // Returns the bounds for |VISIBLE_BOTTOM|.
  58   LayoutData CreateBottomBounds(int width);
  59
  60   // Returns the bounds for |VISIBLE_CENTERED|.
  61   LayoutData CreateCenteredBounds(int width);
  62
  63   // Schedules the animation for the layout the search box and the search
  64   // results.
  65   void LayoutSearchResults(bool should_show_search_results);
  66
  67   // Called when the animation of search box / search results layout has
  68   // completed.
  69   void OnSearchResultLayoutAnimationCompleted(bool should_show_search_results);
  70
  71   // views::View:
  72   virtual void Layout() OVERRIDE;
  73   virtual bool OnKeyPressed(const ui::KeyEvent& key_event) OVERRIDE;
  74
  75   // app_list::SearchBoxViewDelegate:
  76   virtual void QueryChanged(app_list::SearchBoxView* sender) OVERRIDE;
  77
  78   // Not owned.
  79   app_list::AppListViewDelegate* delegate_;
  80
  81   // Views are owned through its hierarchy.
  82   views::View* system_info_view_;
  83   views::View* app_icon_container_;
  84   views::View* search_box_container_;
  85   views::View* control_icon_container_;
  86   views::View* logo_;
  87   app_list::SearchBoxView* search_box_view_;
  88   app_list::SearchResultListView* search_results_view_;
  89
  90   // Do not use views::Background but a views::View with ui::Layer for gradient
  91   // background opacity update and animation.
  92   views::View* background_;
  93
  94   // The expected height of |search_results_view_|
  95   int search_results_height_;
  96
  97   // The state to specify how each of the subviews should be laid out, in the
  98   // range of [0, 1]. 0 means fully BOTTOM state, and 1 is fully CENTERED state.
  99   float layout_state_;
 100
 101   base::WeakPtrFactory<AthenaStartPageView> weak_factory_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(AthenaStartPageView);
 104 };
 105
 106 }  // namespace athena
 107
 108 #endif  // ATHENA_HOME_ATHENA_START_PAGE_VIEW_H_