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| 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 #include "ash/wm/window_selector_controller.h" | |
| 6 | |
| 7 #include "ash/session_state_delegate.h" | |
| 8 #include "ash/shell.h" | |
| 9 #include "ash/wm/mru_window_tracker.h" | |
| 10 #include "ash/wm/window_selector.h" | |
| 11 #include "ash/wm/window_util.h" | |
| 12 #include "ui/base/events/event.h" | |
| 13 #include "ui/base/events/event_handler.h" | |
| 14 | |
| 15 namespace ash { | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 // Filter to watch for the termination of a keyboard gesture to cycle through | |
| 20 // multiple windows. | |
| 21 class WindowSelectorEventFilter : public ui::EventHandler { | |
| 22 public: | |
| 23 WindowSelectorEventFilter(); | |
| 24 virtual ~WindowSelectorEventFilter(); | |
| 25 | |
| 26 // Overridden from ui::EventHandler: | |
| 27 virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE; | |
| 28 | |
| 29 private: | |
| 30 DISALLOW_COPY_AND_ASSIGN(WindowSelectorEventFilter); | |
| 31 }; | |
| 32 | |
| 33 // Watch for all keyboard events by filtering the root window. | |
| 34 WindowSelectorEventFilter::WindowSelectorEventFilter() { | |
| 35 Shell::GetInstance()->AddPreTargetHandler(this); | |
| 36 } | |
| 37 | |
| 38 WindowSelectorEventFilter::~WindowSelectorEventFilter() { | |
| 39 Shell::GetInstance()->RemovePreTargetHandler(this); | |
| 40 } | |
| 41 | |
| 42 void WindowSelectorEventFilter::OnKeyEvent(ui::KeyEvent* event) { | |
| 43 // Views uses VKEY_MENU for both left and right Alt keys. | |
| 44 if (event->key_code() == ui::VKEY_MENU && | |
| 45 event->type() == ui::ET_KEY_RELEASED) { | |
| 46 Shell::GetInstance()->window_selector_controller()->AltKeyReleased(); | |
| 47 // Warning: |this| will be deleted from here on. | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 } // namespace | |
| 52 | |
| 53 WindowSelectorController::WindowSelectorController() { | |
| 54 } | |
| 55 | |
| 56 WindowSelectorController::~WindowSelectorController() { | |
| 57 } | |
| 58 | |
| 59 // static | |
| 60 bool WindowSelectorController::CanSelect() { | |
| 61 // Don't allow a window overview if the screen is locked or a modal dialog is | |
| 62 // open. | |
| 63 return !Shell::GetInstance()->session_state_delegate()->IsScreenLocked() && | |
| 64 !Shell::GetInstance()->IsSystemModalWindowOpen(); | |
| 65 } | |
| 66 | |
| 67 void WindowSelectorController::ToggleOverview() { | |
| 68 if (window_selector_.get()) { | |
| 69 window_selector_.reset(); | |
| 70 } else { | |
| 71 std::vector<aura::Window*> windows = ash::Shell::GetInstance()-> | |
| 72 mru_window_tracker()->BuildMruWindowList(); | |
| 73 // Don't enter overview mode with no windows. | |
| 74 if (windows.empty()) | |
| 75 return; | |
| 76 | |
| 77 // Deactivating the window will hide popup windows like the omnibar or | |
| 78 // open menus. | |
| 79 aura::Window* active_window = wm::GetActiveWindow(); | |
| 80 if (active_window) | |
| 81 wm::DeactivateWindow(active_window); | |
| 82 window_selector_.reset( | |
| 83 new WindowSelector(windows, WindowSelector::OVERVIEW, this)); | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 void WindowSelectorController::HandleCycleWindow( | |
| 88 WindowSelector::Direction direction) { | |
| 89 if (!CanSelect()) | |
| 90 return; | |
| 91 | |
| 92 if (!IsSelecting()) { | |
| 93 event_handler_.reset(new WindowSelectorEventFilter()); | |
| 94 std::vector<aura::Window*> windows = ash::Shell::GetInstance()-> | |
| 95 mru_window_tracker()->BuildMruWindowList(); | |
| 96 window_selector_.reset( | |
| 97 new WindowSelector(windows, WindowSelector::CYCLE, this)); | |
| 98 window_selector_->Step(direction); | |
| 99 } else if (window_selector_->mode() == WindowSelector::CYCLE) { | |
| 100 window_selector_->Step(direction); | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 void WindowSelectorController::AltKeyReleased() { | |
| 105 event_handler_.reset(); | |
| 106 window_selector_->SelectWindow(); | |
| 107 } | |
| 108 | |
| 109 bool WindowSelectorController::IsSelecting() { | |
| 110 return window_selector_.get() != NULL; | |
| 111 } | |
| 112 | |
| 113 void WindowSelectorController::OnWindowSelected(aura::Window* window) { | |
| 114 window_selector_.reset(); | |
| 115 wm::ActivateWindow(window); | |
| 116 } | |
| 117 | |
| 118 void WindowSelectorController::OnSelectionCanceled() { | |
| 119 window_selector_.reset(); | |
| 120 } | |
| 121 | |
| 122 } // namespace ash | |
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Chromium Code Reviews
Issue 22929034:
Relocate and refactor overview mode files. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src