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 #include "ui/app_list/views/contents_view.h"
9 #include "base/logging.h"
10 #include "grit/ui_resources.h"
11 #include "ui/app_list/app_list_constants.h"
12 #include "ui/app_list/app_list_switches.h"
13 #include "ui/app_list/app_list_view_delegate.h"
14 #include "ui/app_list/views/app_list_folder_view.h"
15 #include "ui/app_list/views/app_list_main_view.h"
16 #include "ui/app_list/views/apps_container_view.h"
17 #include "ui/app_list/views/apps_grid_view.h"
18 #include "ui/app_list/views/contents_switcher_view.h"
19 #include "ui/app_list/views/search_result_list_view.h"
20 #include "ui/app_list/views/start_page_view.h"
21 #include "ui/base/resource/resource_bundle.h"
22 #include "ui/events/event.h"
23 #include "ui/views/view_model.h"
24 #include "ui/views/view_model_utils.h"
30 const int kMinMouseWheelToSwitchPage
= 20;
31 const int kMinScrollToSwitchPage
= 20;
32 const int kMinHorizVelocityToSwitchPage
= 800;
34 const double kFinishTransitionThreshold
= 0.33;
38 ContentsView::ContentsView(AppListMainView
* app_list_main_view
)
39 : search_results_view_(NULL
),
40 start_page_view_(NULL
),
41 app_list_main_view_(app_list_main_view
),
42 contents_switcher_view_(NULL
),
43 view_model_(new views::ViewModel
),
44 page_before_search_(0) {
45 pagination_model_
.AddObserver(this);
48 ContentsView::~ContentsView() {
49 pagination_model_
.RemoveObserver(this);
50 if (contents_switcher_view_
)
51 pagination_model_
.RemoveObserver(contents_switcher_view_
);
54 void ContentsView::InitNamedPages(AppListModel
* model
,
55 AppListViewDelegate
* view_delegate
) {
58 if (app_list::switches::IsExperimentalAppListEnabled()) {
59 views::View
* custom_page_view
=
60 view_delegate
->CreateCustomPageWebView(GetLocalBounds().size());
62 AddLauncherPage(custom_page_view
, IDR_APP_LIST_NOTIFICATIONS_ICON
);
64 start_page_view_
= new StartPageView(app_list_main_view_
, view_delegate
);
66 start_page_view_
, IDR_APP_LIST_SEARCH_ICON
, NAMED_PAGE_START
);
68 search_results_view_
=
69 new SearchResultListView(app_list_main_view_
, view_delegate
);
70 AddLauncherPage(search_results_view_
, 0, NAMED_PAGE_SEARCH_RESULTS
);
71 search_results_view_
->SetResults(model
->results());
74 apps_container_view_
= new AppsContainerView(app_list_main_view_
, model
);
76 int initial_page_index
= AddLauncherPage(
77 apps_container_view_
, IDR_APP_LIST_APPS_ICON
, NAMED_PAGE_APPS
);
78 if (app_list::switches::IsExperimentalAppListEnabled())
79 initial_page_index
= GetPageIndexForNamedPage(NAMED_PAGE_START
);
81 page_before_search_
= initial_page_index
;
82 pagination_model_
.SelectPage(initial_page_index
, false);
84 // Needed to update the main search box visibility.
85 ActivePageChanged(false);
88 void ContentsView::CancelDrag() {
89 if (apps_container_view_
->apps_grid_view()->has_dragged_view())
90 apps_container_view_
->apps_grid_view()->EndDrag(true);
91 if (apps_container_view_
->app_list_folder_view()
93 ->has_dragged_view()) {
94 apps_container_view_
->app_list_folder_view()->items_grid_view()->EndDrag(
99 void ContentsView::SetDragAndDropHostOfCurrentAppList(
100 ApplicationDragAndDropHost
* drag_and_drop_host
) {
101 apps_container_view_
->SetDragAndDropHostOfCurrentAppList(drag_and_drop_host
);
104 void ContentsView::SetContentsSwitcherView(
105 ContentsSwitcherView
* contents_switcher_view
) {
106 DCHECK(!contents_switcher_view_
);
107 contents_switcher_view_
= contents_switcher_view
;
108 if (contents_switcher_view_
)
109 pagination_model_
.AddObserver(contents_switcher_view_
);
112 void ContentsView::SetActivePage(int page_index
) {
113 if (GetActivePageIndex() == page_index
)
116 SetActivePageInternal(page_index
, false);
119 int ContentsView::GetActivePageIndex() const {
120 // The active page is changed at the beginning of an animation, not the end.
121 return pagination_model_
.SelectedTargetPage();
124 bool ContentsView::IsNamedPageActive(NamedPage named_page
) const {
125 std::map
<NamedPage
, int>::const_iterator it
=
126 named_page_to_view_
.find(named_page
);
127 if (it
== named_page_to_view_
.end())
129 return it
->second
== GetActivePageIndex();
132 int ContentsView::GetPageIndexForNamedPage(NamedPage named_page
) const {
133 // Find the index of the view corresponding to the given named_page.
134 std::map
<NamedPage
, int>::const_iterator it
=
135 named_page_to_view_
.find(named_page
);
136 // GetPageIndexForNamedPage should never be called on a named_page that does
137 // not have a corresponding view.
138 DCHECK(it
!= named_page_to_view_
.end());
142 int ContentsView::NumLauncherPages() const {
143 return pagination_model_
.total_pages();
146 void ContentsView::SetActivePageInternal(int page_index
,
147 bool show_search_results
) {
148 if (!show_search_results
)
149 page_before_search_
= page_index
;
150 // Start animating to the new page.
151 pagination_model_
.SelectPage(page_index
, true);
152 ActivePageChanged(show_search_results
);
155 void ContentsView::ActivePageChanged(bool show_search_results
) {
156 // TODO(xiyuan): Highlight default match instead of the first.
157 if (IsNamedPageActive(NAMED_PAGE_SEARCH_RESULTS
) &&
158 search_results_view_
->visible()) {
159 search_results_view_
->SetSelectedIndex(0);
161 if (search_results_view_
)
162 search_results_view_
->UpdateAutoLaunchState();
164 if (IsNamedPageActive(NAMED_PAGE_START
)) {
165 if (show_search_results
)
166 start_page_view_
->ShowSearchResults();
168 start_page_view_
->Reset();
171 // Notify parent AppListMainView of the page change.
172 app_list_main_view_
->UpdateSearchBoxVisibility();
175 void ContentsView::ShowSearchResults(bool show
) {
176 int search_page
= GetPageIndexForNamedPage(
177 app_list::switches::IsExperimentalAppListEnabled()
179 : NAMED_PAGE_SEARCH_RESULTS
);
181 SetActivePageInternal(show
? search_page
: page_before_search_
, show
);
184 bool ContentsView::IsShowingSearchResults() const {
185 return app_list::switches::IsExperimentalAppListEnabled()
186 ? IsNamedPageActive(NAMED_PAGE_START
) &&
187 start_page_view_
->IsShowingSearchResults()
188 : IsNamedPageActive(NAMED_PAGE_SEARCH_RESULTS
);
191 void ContentsView::UpdatePageBounds() {
192 gfx::Rect
rect(GetContentsBounds());
196 // The bounds calculations will potentially be mid-transition (depending on
197 // the state of the PaginationModel).
198 int current_page
= std::max(0, pagination_model_
.selected_page());
199 int target_page
= current_page
;
201 if (pagination_model_
.has_transition()) {
202 const PaginationModel::Transition
& transition
=
203 pagination_model_
.transition();
204 if (pagination_model_
.is_valid_page(transition
.target_page
)) {
205 target_page
= transition
.target_page
;
206 progress
= transition
.progress
;
210 gfx::Rect
incoming_target(rect
);
211 gfx::Rect
outgoing_target(rect
);
212 int dir
= target_page
> current_page
? -1 : 1;
214 if (app_list::switches::IsExperimentalAppListEnabled()) {
215 // The experimental app list transitions horizontally.
216 int page_width
= rect
.width();
217 int transition_offset
= progress
* page_width
* dir
;
219 outgoing_target
.set_x(transition_offset
);
220 incoming_target
.set_x(dir
< 0 ? transition_offset
+ page_width
221 : transition_offset
- page_width
);
223 // The normal app list transitions vertically.
224 int page_height
= rect
.height();
225 int transition_offset
= progress
* page_height
* dir
;
227 outgoing_target
.set_y(transition_offset
);
228 incoming_target
.set_y(dir
< 0 ? transition_offset
+ page_height
229 : transition_offset
- page_height
);
232 view_model_
->view_at(current_page
)->SetBoundsRect(outgoing_target
);
233 view_model_
->view_at(target_page
)->SetBoundsRect(incoming_target
);
236 PaginationModel
* ContentsView::GetAppsPaginationModel() {
237 return apps_container_view_
->apps_grid_view()->pagination_model();
240 void ContentsView::ShowFolderContent(AppListFolderItem
* item
) {
241 apps_container_view_
->ShowActiveFolder(item
);
244 void ContentsView::Prerender() {
245 const int selected_page
=
246 std::max(0, GetAppsPaginationModel()->selected_page());
247 apps_container_view_
->apps_grid_view()->Prerender(selected_page
);
250 views::View
* ContentsView::GetPageView(int index
) {
251 return view_model_
->view_at(index
);
254 void ContentsView::AddBlankPageForTesting() {
255 AddLauncherPage(new views::View
, 0);
258 int ContentsView::AddLauncherPage(views::View
* view
, int resource_id
) {
259 int page_index
= view_model_
->view_size();
261 view_model_
->Add(view
, page_index
);
262 if (contents_switcher_view_
)
263 contents_switcher_view_
->AddSwitcherButton(resource_id
, page_index
);
264 pagination_model_
.SetTotalPages(view_model_
->view_size());
268 int ContentsView::AddLauncherPage(views::View
* view
,
270 NamedPage named_page
) {
271 int page_index
= AddLauncherPage(view
, resource_id
);
272 named_page_to_view_
.insert(std::pair
<NamedPage
, int>(named_page
, page_index
));
276 gfx::Size
ContentsView::GetPreferredSize() const {
277 const gfx::Size container_size
=
278 apps_container_view_
->apps_grid_view()->GetPreferredSize();
279 const gfx::Size results_size
= search_results_view_
280 ? search_results_view_
->GetPreferredSize()
283 int width
= std::max(container_size
.width(), results_size
.width());
284 int height
= std::max(container_size
.height(), results_size
.height());
285 return gfx::Size(width
, height
);
288 void ContentsView::Layout() {
289 // Immediately finish all current animations.
290 pagination_model_
.FinishAnimation();
292 // Move the current view onto the screen, and all other views off screen to
293 // the left. (Since we are not animating, we don't need to be careful about
294 // which side we place the off-screen views onto.)
295 gfx::Rect
rect(GetContentsBounds());
299 gfx::Rect
offscreen_target(rect
);
300 offscreen_target
.set_x(-rect
.width());
302 for (int i
= 0; i
< view_model_
->view_size(); ++i
) {
303 view_model_
->view_at(i
)->SetBoundsRect(
304 i
== pagination_model_
.SelectedTargetPage() ? rect
: offscreen_target
);
308 bool ContentsView::OnKeyPressed(const ui::KeyEvent
& event
) {
309 return view_model_
->view_at(GetActivePageIndex())->OnKeyPressed(event
);
312 bool ContentsView::OnMouseWheel(const ui::MouseWheelEvent
& event
) {
313 if (!IsNamedPageActive(NAMED_PAGE_APPS
))
317 if (abs(event
.x_offset()) > abs(event
.y_offset()))
318 offset
= event
.x_offset();
320 offset
= event
.y_offset();
322 if (abs(offset
) > kMinMouseWheelToSwitchPage
) {
323 if (!GetAppsPaginationModel()->has_transition()) {
324 GetAppsPaginationModel()->SelectPageRelative(offset
> 0 ? -1 : 1, true);
332 void ContentsView::TotalPagesChanged() {
335 void ContentsView::SelectedPageChanged(int old_selected
, int new_selected
) {
338 void ContentsView::TransitionStarted() {
341 void ContentsView::TransitionChanged() {
345 void ContentsView::OnGestureEvent(ui::GestureEvent
* event
) {
346 if (!IsNamedPageActive(NAMED_PAGE_APPS
))
349 switch (event
->type()) {
350 case ui::ET_GESTURE_SCROLL_BEGIN
:
351 GetAppsPaginationModel()->StartScroll();
354 case ui::ET_GESTURE_SCROLL_UPDATE
:
355 // event->details.scroll_x() > 0 means moving contents to right. That is,
356 // transitioning to previous page.
357 GetAppsPaginationModel()->UpdateScroll(event
->details().scroll_x() /
358 GetContentsBounds().width());
361 case ui::ET_GESTURE_SCROLL_END
:
362 GetAppsPaginationModel()->EndScroll(
363 GetAppsPaginationModel()->transition().progress
<
364 kFinishTransitionThreshold
);
367 case ui::ET_SCROLL_FLING_START
: {
368 GetAppsPaginationModel()->EndScroll(true);
369 if (fabs(event
->details().velocity_x()) > kMinHorizVelocityToSwitchPage
) {
370 GetAppsPaginationModel()->SelectPageRelative(
371 event
->details().velocity_x() < 0 ? 1 : -1, true);
381 void ContentsView::OnScrollEvent(ui::ScrollEvent
* event
) {
382 if (!IsNamedPageActive(NAMED_PAGE_APPS
) ||
383 event
->type() == ui::ET_SCROLL_FLING_CANCEL
) {
388 if (std::abs(event
->x_offset()) > std::abs(event
->y_offset()))
389 offset
= event
->x_offset();
391 offset
= event
->y_offset();
393 if (std::abs(offset
) > kMinScrollToSwitchPage
) {
394 if (!GetAppsPaginationModel()->has_transition()) {
395 GetAppsPaginationModel()->SelectPageRelative(offset
> 0 ? -1 : 1, true);
398 event
->StopPropagation();
402 } // namespace app_list