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.
5 #ifndef UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
6 #define UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_
10 #include "base/basictypes.h"
11 #include "base/compiler_specific.h"
12 #include "base/memory/scoped_ptr.h"
13 #include "ui/app_list/app_list_export.h"
14 #include "ui/app_list/app_list_model.h"
15 #include "ui/app_list/pagination_model.h"
16 #include "ui/app_list/pagination_model_observer.h"
17 #include "ui/views/view.h"
18 #include "ui/views/view_model.h"
27 class ApplicationDragAndDropHost;
28 class AppListFolderItem;
29 class AppListMainView;
31 class AppListViewDelegate;
32 class AppsContainerView;
33 class ContentsSwitcherView;
34 class PaginationModel;
35 class SearchResultListView;
38 // A view to manage launcher pages within the Launcher (eg. start page, apps
39 // grid view, search results). There can be any number of launcher pages, only
40 // one of which can be active at a given time. ContentsView provides the user
41 // interface for switching between launcher pages, and animates the transition
43 class APP_LIST_EXPORT ContentsView : public views::View,
44 public PaginationModelObserver {
46 ContentsView(AppListMainView* app_list_main_view);
47 ~ContentsView() override;
49 // Initialize the pages of the launcher. In the experimental launcher, should
50 // be called after set_contents_switcher_view(), or switcher buttons will not
52 void Init(AppListModel* model, AppListViewDelegate* view_delegate);
54 // The app list gets closed and drag and drop operations need to be cancelled.
57 // If |drag_and_drop| is not NULL it will be called upon drag and drop
58 // operations outside the application list.
59 void SetDragAndDropHostOfCurrentAppList(
60 ApplicationDragAndDropHost* drag_and_drop_host);
62 void SetContentsSwitcherView(ContentsSwitcherView* contents_switcher_view);
64 // Shows/hides the search results. Hiding the search results will cause the
65 // app list to return to the page that was displayed before
66 // ShowSearchResults(true) was invoked.
67 void ShowSearchResults(bool show);
68 bool IsShowingSearchResults() const;
70 void ShowFolderContent(AppListFolderItem* folder);
72 // Sets the active launcher page and animates the pages into place.
73 void SetActivePage(int page_index);
75 // The index of the currently active launcher page.
76 int GetActivePageIndex() const;
78 // True if |state| is the current active laucher page.
79 bool IsStateActive(AppListModel::State state) const;
81 // Gets the index of a launcher page in |view_model_|, by State. Returns
82 // -1 if there is no view for |state|.
83 int GetPageIndexForState(AppListModel::State state) const;
85 int NumLauncherPages() const;
89 AppsContainerView* apps_container_view() { return apps_container_view_; }
90 StartPageView* start_page_view() { return start_page_view_; }
91 SearchResultListView* search_results_view() { return search_results_view_; }
92 views::View* GetPageView(int index);
94 // Adds a blank launcher page. For use in tests only.
95 void AddBlankPageForTesting();
97 // Returns the pagination model for the ContentsView.
98 const PaginationModel& pagination_model() { return pagination_model_; }
100 // Returns search box bounds to use for content views that do not specify
101 // their own custom layout.
102 gfx::Rect GetDefaultSearchBoxBounds() const;
104 // Returns the content area bounds to use for content views that do not
105 // specify their own custom layout.
106 gfx::Rect GetDefaultContentsBounds() const;
108 // Overridden from views::View:
109 gfx::Size GetPreferredSize() const override;
110 void Layout() override;
111 bool OnKeyPressed(const ui::KeyEvent& event) override;
113 // Overridden from PaginationModelObserver:
114 void TotalPagesChanged() override;
115 void SelectedPageChanged(int old_selected, int new_selected) override;
116 void TransitionStarted() override;
117 void TransitionChanged() override;
120 // Sets the active launcher page, accounting for whether the change is for
122 void SetActivePageInternal(int page_index, bool show_search_results);
124 // Invoked when active view is changed.
125 void ActivePageChanged(bool show_search_results);
127 // Returns the size of the default content area.
128 gfx::Size GetDefaultContentsSize() const;
130 // Gets the origin (the off-screen resting place) for a given launcher page
131 // with index |page_index|.
132 gfx::Rect GetOffscreenPageBounds(int page_index) const;
134 // Calculates and sets the bounds for the subviews. If there is currently an
135 // animation, this positions the views as appropriate for the current frame.
136 void UpdatePageBounds();
138 // Adds |view| as a new page to the end of the list of launcher pages. The
139 // view is inserted as a child of the ContentsView, and a button with
140 // |resource_id| is added to the ContentsSwitcherView. There is no name
141 // associated with the page. Returns the index of the new page.
142 int AddLauncherPage(views::View* view, int resource_id);
144 // Adds |view| as a new page to the end of the list of launcher pages. The
145 // view is inserted as a child of the ContentsView, and a button with
146 // |resource_id| is added to the ContentsSwitcherView. The page is associated
147 // with the name |state|. Returns the index of the new page.
148 int AddLauncherPage(views::View* view,
150 AppListModel::State state);
152 // Gets the PaginationModel owned by the AppsGridView.
153 // Note: This is different to |pagination_model_|, which manages top-level
154 // launcher-page pagination.
155 PaginationModel* GetAppsPaginationModel();
157 // Special sub views of the ContentsView. All owned by the views hierarchy.
158 AppsContainerView* apps_container_view_;
159 SearchResultListView* search_results_view_;
160 StartPageView* start_page_view_;
162 AppListMainView* app_list_main_view_; // Parent view, owns this.
163 // Sibling view, owned by |app_list_main_view_|.
164 ContentsSwitcherView* contents_switcher_view_;
166 scoped_ptr<views::ViewModel> view_model_;
168 // Maps State onto |view_model_| indices.
169 std::map<AppListModel::State, int> state_to_view_;
171 // Maps |view_model_| indices onto State.
172 std::map<int, AppListModel::State> view_to_state_;
174 // The page that was showing before ShowSearchResults(true) was invoked.
175 int page_before_search_;
177 // Manages the pagination for the launcher pages.
178 PaginationModel pagination_model_;
180 DISALLOW_COPY_AND_ASSIGN(ContentsView);
183 } // namespace app_list
185 #endif // UI_APP_LIST_VIEWS_CONTENTS_VIEW_H_