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| 1 // Copyright 2014 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/common/accelerators/accelerator_router.h" | |
| 6 | |
| 7 #include "ash/common/accelerators/accelerator_controller.h" | |
| 8 #include "ash/common/wm/window_state.h" | |
| 9 #include "ash/common/wm_shell.h" | |
| 10 #include "ash/common/wm_window.h" | |
| 11 #include "base/metrics/histogram_macros.h" | |
| 12 #include "base/stl_util.h" | |
| 13 #include "ui/base/accelerators/accelerator.h" | |
| 14 #include "ui/events/event.h" | |
| 15 | |
| 16 namespace ash { | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 // Returns true if |key_code| is a key usually handled directly by the shell. | |
| 21 bool IsSystemKey(ui::KeyboardCode key_code) { | |
| 22 switch (key_code) { | |
| 23 case ui::VKEY_MEDIA_LAUNCH_APP2: // Fullscreen button. | |
| 24 case ui::VKEY_MEDIA_LAUNCH_APP1: // Overview button. | |
| 25 case ui::VKEY_BRIGHTNESS_DOWN: | |
| 26 case ui::VKEY_BRIGHTNESS_UP: | |
| 27 case ui::VKEY_KBD_BRIGHTNESS_DOWN: | |
| 28 case ui::VKEY_KBD_BRIGHTNESS_UP: | |
| 29 case ui::VKEY_VOLUME_MUTE: | |
| 30 case ui::VKEY_VOLUME_DOWN: | |
| 31 case ui::VKEY_VOLUME_UP: | |
| 32 case ui::VKEY_POWER: | |
| 33 return true; | |
| 34 default: | |
| 35 return false; | |
| 36 } | |
| 37 } | |
| 38 | |
| 39 } // namespace | |
| 40 | |
| 41 AcceleratorRouter::AcceleratorRouter() {} | |
| 42 | |
| 43 AcceleratorRouter::~AcceleratorRouter() {} | |
| 44 | |
| 45 bool AcceleratorRouter::ProcessAccelerator(WmWindow* target, | |
| 46 const ui::KeyEvent& key_event, | |
| 47 const ui::Accelerator& accelerator) { | |
| 48 // Callers should never supply null. | |
| 49 DCHECK(target); | |
| 50 RecordSearchKeyStats(accelerator); | |
| 51 // Special hardware keys like brightness and volume are handled in | |
| 52 // special way. However, some windows can override this behavior | |
| 53 // (e.g. Chrome v1 apps by default and Chrome v2 apps with | |
| 54 // permission) by setting a window property. | |
| 55 if (IsSystemKey(key_event.key_code()) && | |
| 56 !CanConsumeSystemKeys(target, key_event)) { | |
| 57 // System keys are always consumed regardless of whether they trigger an | |
| 58 // accelerator to prevent windows from seeing unexpected key up events. | |
| 59 WmShell::Get()->accelerator_controller()->Process(accelerator); | |
| 60 return true; | |
| 61 } | |
| 62 if (!ShouldProcessAcceleratorNow(target, key_event, accelerator)) | |
| 63 return false; | |
| 64 return WmShell::Get()->accelerator_controller()->Process(accelerator); | |
| 65 } | |
| 66 | |
| 67 void AcceleratorRouter::RecordSearchKeyStats( | |
| 68 const ui::Accelerator& accelerator) { | |
| 69 if (accelerator.IsCmdDown()) { | |
| 70 if (search_key_state_ == RELEASED) { | |
| 71 search_key_state_ = PRESSED; | |
| 72 search_key_pressed_timestamp_ = base::TimeTicks::Now(); | |
| 73 } | |
| 74 | |
| 75 if (accelerator.key_code() != ui::KeyboardCode::VKEY_COMMAND && | |
| 76 search_key_state_ == PRESSED) { | |
| 77 search_key_state_ = RECORDED; | |
| 78 UMA_HISTOGRAM_TIMES( | |
| 79 "Keyboard.Shortcuts.CrosSearchKeyDelay", | |
| 80 base::TimeTicks::Now() - search_key_pressed_timestamp_); | |
| 81 } | |
| 82 } else { | |
| 83 search_key_state_ = RELEASED; | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 bool AcceleratorRouter::CanConsumeSystemKeys(WmWindow* target, | |
| 88 const ui::KeyEvent& event) { | |
| 89 // Uses the top level window so if the target is a web contents window the | |
| 90 // containing parent window will be checked for the property. | |
| 91 WmWindow* top_level = target->GetToplevelWindowForFocus(); | |
| 92 return top_level && top_level->GetWindowState()->can_consume_system_keys(); | |
| 93 } | |
| 94 | |
| 95 bool AcceleratorRouter::ShouldProcessAcceleratorNow( | |
| 96 WmWindow* target, | |
| 97 const ui::KeyEvent& event, | |
| 98 const ui::Accelerator& accelerator) { | |
| 99 // Callers should never supply null. | |
| 100 DCHECK(target); | |
| 101 // On ChromeOS, If the accelerator is Search+<key(s)> then it must never be | |
| 102 // intercepted by apps or windows. | |
| 103 if (accelerator.IsCmdDown()) | |
| 104 return true; | |
| 105 | |
| 106 if (base::ContainsValue(WmShell::Get()->GetAllRootWindows(), target)) | |
| 107 return true; | |
| 108 | |
| 109 AcceleratorController* accelerator_controller = | |
| 110 WmShell::Get()->accelerator_controller(); | |
| 111 | |
| 112 // Reserved accelerators (such as Power button) always have a prority. | |
| 113 if (accelerator_controller->IsReserved(accelerator)) | |
| 114 return true; | |
| 115 | |
| 116 // A full screen window has a right to handle all key events including the | |
| 117 // reserved ones. | |
| 118 WmWindow* top_level = target->GetToplevelWindowForFocus(); | |
| 119 if (top_level && top_level->GetWindowState()->IsFullscreen()) { | |
| 120 // On ChromeOS, fullscreen windows are either browser or apps, which | |
| 121 // send key events to a web content first, then will process keys | |
| 122 // if the web content didn't consume them. | |
| 123 return false; | |
| 124 } | |
| 125 | |
| 126 // Handle preferred accelerators (such as ALT-TAB) before sending | |
| 127 // to the target. | |
| 128 if (accelerator_controller->IsPreferred(accelerator)) | |
| 129 return true; | |
| 130 | |
| 131 return WmShell::Get()->GetAppListTargetVisibility(); | |
| 132 } | |
| 133 | |
| 134 } // namespace ash | |
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Chromium Code Reviews
Issue 2736573002:
chromeos: Move files in //ash/common to //ash, part 2 (Closed)
