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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/app_list/pagination_model.h" | 5 #include "ui/app_list/pagination_model.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "ui/app_list/pagination_model_observer.h" | 9 #include "ui/app_list/pagination_model_observer.h" |
10 #include "ui/base/animation/slide_animation.h" | 10 #include "ui/base/animation/slide_animation.h" |
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34 if (selected_page_ >= total_pages_) | 34 if (selected_page_ >= total_pages_) |
35 SelectPage(total_pages_ - 1, false /* animate */); | 35 SelectPage(total_pages_ - 1, false /* animate */); |
36 FOR_EACH_OBSERVER(PaginationModelObserver, observers_, TotalPagesChanged()); | 36 FOR_EACH_OBSERVER(PaginationModelObserver, observers_, TotalPagesChanged()); |
37 } | 37 } |
38 | 38 |
39 void PaginationModel::SelectPage(int page, bool animate) { | 39 void PaginationModel::SelectPage(int page, bool animate) { |
40 if (animate) { | 40 if (animate) { |
41 // -1 and |total_pages_| are valid target page for animation. | 41 // -1 and |total_pages_| are valid target page for animation. |
42 DCHECK(page >= -1 && page <= total_pages_); | 42 DCHECK(page >= -1 && page <= total_pages_); |
43 | 43 |
44 if (!transition_animation_.get()) { | 44 if (!transition_animation_) { |
45 if (page == selected_page_) | 45 if (page == selected_page_) |
46 return; | 46 return; |
47 | 47 |
48 // Suppress over scroll animation if the same one happens too fast. | 48 // Suppress over scroll animation if the same one happens too fast. |
49 if (!is_valid_page(page)) { | 49 if (!is_valid_page(page)) { |
50 const base::TimeTicks now = base::TimeTicks::Now(); | 50 const base::TimeTicks now = base::TimeTicks::Now(); |
51 | 51 |
52 if (page == last_overscroll_target_page_) { | 52 if (page == last_overscroll_target_page_) { |
53 const int kMinOverScrollTimeGapInMs = 500; | 53 const int kMinOverScrollTimeGapInMs = 500; |
54 const base::TimeDelta time_elapsed = | 54 const base::TimeDelta time_elapsed = |
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258 } else if (transition_animation_->GetCurrentValue() == 0) { | 258 } else if (transition_animation_->GetCurrentValue() == 0) { |
259 // Hiding animation ends. No page change should happen. | 259 // Hiding animation ends. No page change should happen. |
260 ResetTransitionAnimation(); | 260 ResetTransitionAnimation(); |
261 } | 261 } |
262 | 262 |
263 if (next_target >= 0) | 263 if (next_target >= 0) |
264 SelectPage(next_target, true); | 264 SelectPage(next_target, true); |
265 } | 265 } |
266 | 266 |
267 } // namespace app_list | 267 } // namespace app_list |
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