1 // Copyright 2013 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 CHROME_BROWSER_UI_VIEWS_APP_LIST_WIN_ACTIVATION_TRACKER_WIN_H_ 6 #define CHROME_BROWSER_UI_VIEWS_APP_LIST_WIN_ACTIVATION_TRACKER_WIN_H_ 7 8 #include "base/macros.h" 9 #include "base/timer/timer.h" 10 #include "ui/app_list/views/app_list_view_observer.h" 11 12 class AppListServiceWin; 13 14 // Periodically checks to see if an AppListView has lost focus using a timer. 15 class ActivationTrackerWin : public app_list::AppListViewObserver { 16 public: 17 explicit ActivationTrackerWin(AppListServiceWin* service); 18 ~ActivationTrackerWin(); 19 20 // app_list::AppListViewObserver: 21 virtual void OnActivationChanged(views::Widget* widget, bool active) OVERRIDE; 22 23 void OnViewHidden(); 24 25 private: 26 // Dismisses the app launcher if it has lost focus and the user is not trying 27 // to pin it. 28 void MaybeDismissAppList(); 29 30 // Determines whether the app launcher should be dismissed. This should be 31 // called at most once per timer tick, as it is not idempotent (if the taskbar 32 // is focused, it waits until it has been called twice before dismissing the 33 // app list). 34 bool ShouldDismissAppList(); 35 36 AppListServiceWin* service_; // Weak. Owns this. 37 38 // Records whether, on the previous timer tick, the taskbar had focus without 39 // the right mouse button being down. We allow the taskbar to have focus for 40 // one tick before dismissing the app list. This allows the app list to be 41 // kept visible if the taskbar is seen briefly without the right mouse button 42 // down, but not if this happens for two consecutive ticks. 43 bool taskbar_has_focus_; 44 45 // Timer used to check if the taskbar or app list is active. Using a timer 46 // means we don't need to hook Windows, which is apparently not possible 47 // since Vista (and is not nice at any time). 48 base::RepeatingTimer<ActivationTrackerWin> timer_; 49 50 DISALLOW_COPY_AND_ASSIGN(ActivationTrackerWin); 51 }; 52 53 #endif // CHROME_BROWSER_UI_VIEWS_APP_LIST_WIN_ACTIVATION_TRACKER_WIN_H_ 54
