Use single "modifiers" field rather than boolean fields.

ash/accelerators/accelerator_table.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/accelerators/accelerator_table.h"
 
 #include "base/basictypes.h"
+#include "ui/base/events.h"
 
 namespace ash {
 
 const AcceleratorData kAcceleratorData[] = {
-  // trigger_on_press, KeyboardCode, shift, control, alt, AcceleratorAction
+  { false, ui::VKEY_MENU, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, NEXT_IME },
+  { false, ui::VKEY_SHIFT, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, NEXT_IME },
+  { true, ui::VKEY_SPACE, ui::EF_CONTROL_DOWN, PREVIOUS_IME },
+  // Shortcuts for Japanese IME.
+  { true, ui::VKEY_CONVERT, ui::EF_NONE, SWITCH_IME },
+  { true, ui::VKEY_NONCONVERT, ui::EF_NONE, SWITCH_IME },
+  { true, ui::VKEY_DBE_SBCSCHAR, ui::EF_NONE, SWITCH_IME },
+  { true, ui::VKEY_DBE_DBCSCHAR, ui::EF_NONE, SWITCH_IME },
+  // Shortcuts for Koren IME.
+  { true, ui::VKEY_HANGUL, ui::EF_NONE, SWITCH_IME },
+  { true, ui::VKEY_SPACE, ui::EF_SHIFT_DOWN, SWITCH_IME },
 
-  { false, ui::VKEY_MENU, true, false, true, NEXT_IME },
-  { false, ui::VKEY_SHIFT, true, false, true, NEXT_IME },
-  { true, ui::VKEY_SPACE, false, true, false, PREVIOUS_IME },
-  // Shortcuts for Japanese IME.
-  { true, ui::VKEY_CONVERT, false, false, false, SWITCH_IME },
-  { true, ui::VKEY_NONCONVERT, false, false, false, SWITCH_IME },
-  { true, ui::VKEY_DBE_SBCSCHAR, false, false, false, SWITCH_IME },
-  { true, ui::VKEY_DBE_DBCSCHAR, false, false, false, SWITCH_IME },
-  // Shortcuts for Koren IME.
-  { true, ui::VKEY_HANGUL, false, false, false, SWITCH_IME },
-  { true, ui::VKEY_SPACE, true, false, false, SWITCH_IME },
-
-  { true, ui::VKEY_TAB, false, false, true, CYCLE_FORWARD_MRU },
-  { true, ui::VKEY_TAB, true, false, true, CYCLE_BACKWARD_MRU },
-  { true, ui::VKEY_F5, false, false, false, CYCLE_FORWARD_LINEAR },
+  { true, ui::VKEY_TAB,
+    ui::EF_ALT_DOWN, CYCLE_FORWARD_MRU },
+  { true, ui::VKEY_TAB, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN,
+    CYCLE_BACKWARD_MRU },
+  { true, ui::VKEY_F5, ui::EF_NONE, CYCLE_FORWARD_LINEAR },
 #if defined(OS_CHROMEOS)
-  { true, ui::VKEY_BRIGHTNESS_DOWN, false, false, false, BRIGHTNESS_DOWN },
-  { true, ui::VKEY_BRIGHTNESS_UP, false, false, false, BRIGHTNESS_UP },
-  { true, ui::VKEY_L, true, true, false, LOCK_SCREEN },
-  { true, ui::VKEY_M, false, true, false, OPEN_FILE_MANAGER },
-  { true, ui::VKEY_T, false, true, true, OPEN_CROSH },
+  { true, ui::VKEY_BRIGHTNESS_DOWN, ui::EF_NONE, BRIGHTNESS_DOWN },
+  { true, ui::VKEY_BRIGHTNESS_UP, ui::EF_NONE, BRIGHTNESS_UP },
+  { true, ui::VKEY_L, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, LOCK_SCREEN },
+  { true, ui::VKEY_M, ui::EF_CONTROL_DOWN, OPEN_FILE_MANAGER },
+  { true, ui::VKEY_T, ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN, OPEN_CROSH },
 #endif
-  { true, ui::VKEY_Q, true, true, false, EXIT },
-  { true, ui::VKEY_Z, false, true, true, TOGGLE_SPOKEN_FEEDBACK },
+  { true, ui::VKEY_Q, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, EXIT },
+  { true, ui::VKEY_Z, ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    TOGGLE_SPOKEN_FEEDBACK },
 
   // When you change the shortcut for NEW_INCOGNITO_WINDOW or NEW_WINDOW,
   // you also need to modify ToolbarView::GetAcceleratorForCommandId() in
   // chrome/browser/ui/views/toolbar_view.cc.
-  { true, ui::VKEY_N, true, true, false, NEW_INCOGNITO_WINDOW },
-  { true, ui::VKEY_N, false, true, false, NEW_WINDOW },
+  { true, ui::VKEY_N, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
+    NEW_INCOGNITO_WINDOW },
+  { true, ui::VKEY_N, ui::EF_CONTROL_DOWN, NEW_WINDOW },
 
-  { true, ui::VKEY_F5, true, false, false, CYCLE_BACKWARD_LINEAR },
-  { true, ui::VKEY_F5, false, true, false, TAKE_SCREENSHOT },
-  { true, ui::VKEY_F5, true, true, false, TAKE_PARTIAL_SCREENSHOT },
-  { true, ui::VKEY_PRINT, false, false, false, TAKE_SCREENSHOT },
+  { true, ui::VKEY_F5, ui::EF_SHIFT_DOWN, CYCLE_BACKWARD_LINEAR },
+  { true, ui::VKEY_F5, ui::EF_CONTROL_DOWN, TAKE_SCREENSHOT },
+  { true, ui::VKEY_F5, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
+    TAKE_PARTIAL_SCREENSHOT },
+  { true, ui::VKEY_PRINT, ui::EF_NONE, TAKE_SCREENSHOT },
   // On Chrome OS, Search key is mapped to LWIN.
-  { true, ui::VKEY_LWIN, false, false, false, SEARCH_KEY },
-  { true, ui::VKEY_LWIN, false, true, false, TOGGLE_APP_LIST },
-  { true, ui::VKEY_LWIN, true, false, false, TOGGLE_CAPS_LOCK },
-  { true, ui::VKEY_F6, false, false, false, BRIGHTNESS_DOWN },
-  { true, ui::VKEY_F7, false, false, false, BRIGHTNESS_UP },
-  { true, ui::VKEY_F8, false, false, false, VOLUME_MUTE },
-  { true, ui::VKEY_VOLUME_MUTE, false, false, false, VOLUME_MUTE },
-  { true, ui::VKEY_F9, false, false, false, VOLUME_DOWN },
-  { true, ui::VKEY_VOLUME_DOWN, false, false, false, VOLUME_DOWN },
-  { true, ui::VKEY_F10, false, false, false, VOLUME_UP },
-  { true, ui::VKEY_VOLUME_UP, false, false, false, VOLUME_UP },
-  { true, ui::VKEY_L, true, false, true, FOCUS_LAUNCHER },
-  { true, ui::VKEY_S, true, false, true, FOCUS_TRAY },
-  { true, ui::VKEY_OEM_2, false, true, true, SHOW_KEYBOARD_OVERLAY },
-  { true, ui::VKEY_OEM_2, true, true, true, SHOW_KEYBOARD_OVERLAY },
-  { true, ui::VKEY_F1, true, true, false, SHOW_OAK },
-  { true, ui::VKEY_1, false, false, true, SELECT_WIN_0 },
-  { true, ui::VKEY_2, false, false, true, SELECT_WIN_1 },
-  { true, ui::VKEY_3, false, false, true, SELECT_WIN_2 },
-  { true, ui::VKEY_4, false, false, true, SELECT_WIN_3 },
-  { true, ui::VKEY_5, false, false, true, SELECT_WIN_4 },
-  { true, ui::VKEY_6, false, false, true, SELECT_WIN_5 },
-  { true, ui::VKEY_7, false, false, true, SELECT_WIN_6 },
-  { true, ui::VKEY_8, false, false, true, SELECT_WIN_7 },
-  { true, ui::VKEY_9, false, false, true, SELECT_LAST_WIN },
+  { true, ui::VKEY_LWIN, ui::EF_NONE, SEARCH_KEY },
+  { true, ui::VKEY_LWIN, ui::EF_CONTROL_DOWN, TOGGLE_APP_LIST },
+  { true, ui::VKEY_LWIN, ui::EF_SHIFT_DOWN, TOGGLE_CAPS_LOCK },
+  { true, ui::VKEY_F6, ui::EF_NONE, BRIGHTNESS_DOWN },
+  { true, ui::VKEY_F7, ui::EF_NONE, BRIGHTNESS_UP },
+  { true, ui::VKEY_F8, ui::EF_NONE, VOLUME_MUTE },
+  { true, ui::VKEY_VOLUME_MUTE, ui::EF_NONE, VOLUME_MUTE },
+  { true, ui::VKEY_F9, ui::EF_NONE, VOLUME_DOWN },
+  { true, ui::VKEY_VOLUME_DOWN, ui::EF_NONE, VOLUME_DOWN },
+  { true, ui::VKEY_F10, ui::EF_NONE, VOLUME_UP },
+  { true, ui::VKEY_VOLUME_UP, ui::EF_NONE, VOLUME_UP },
+  { true, ui::VKEY_L, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, FOCUS_LAUNCHER },
+  { true, ui::VKEY_S, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, FOCUS_TRAY },
+  { true, ui::VKEY_OEM_2, ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    SHOW_KEYBOARD_OVERLAY },
+  { true, ui::VKEY_OEM_2,
+    ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    SHOW_KEYBOARD_OVERLAY },
+  { true, ui::VKEY_F1, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, SHOW_OAK },
+  { true, ui::VKEY_1, ui::EF_ALT_DOWN, SELECT_WIN_0 },
+  { true, ui::VKEY_2, ui::EF_ALT_DOWN, SELECT_WIN_1 },
+  { true, ui::VKEY_3, ui::EF_ALT_DOWN, SELECT_WIN_2 },
+  { true, ui::VKEY_4, ui::EF_ALT_DOWN, SELECT_WIN_3 },
+  { true, ui::VKEY_5, ui::EF_ALT_DOWN, SELECT_WIN_4 },
+  { true, ui::VKEY_6, ui::EF_ALT_DOWN, SELECT_WIN_5 },
+  { true, ui::VKEY_7, ui::EF_ALT_DOWN, SELECT_WIN_6 },
+  { true, ui::VKEY_8, ui::EF_ALT_DOWN, SELECT_WIN_7 },
+  { true, ui::VKEY_9, ui::EF_ALT_DOWN, SELECT_LAST_WIN },
 
   // We need the number keys with and without shift since the French keyboard
   // does not have explicit number keys. Instead they have to press
   // 'Shift' + .. to access the keys. If we ever have an overlap of
   // functionality, we should think about either assembling this table
   // dynamically - or by decoding the keys properly (which is of course in
   // conflict with other keyboards since the Shift+ is missing then).
-  { true, ui::VKEY_1, true, false, true, SELECT_WIN_0 },
-  { true, ui::VKEY_2, true, false, true, SELECT_WIN_1 },
-  { true, ui::VKEY_3, true, false, true, SELECT_WIN_2 },
-  { true, ui::VKEY_4, true, false, true, SELECT_WIN_3 },
-  { true, ui::VKEY_5, true, false, true, SELECT_WIN_4 },
-  { true, ui::VKEY_6, true, false, true, SELECT_WIN_5 },
-  { true, ui::VKEY_7, true, false, true, SELECT_WIN_6 },
-  { true, ui::VKEY_8, true, false, true, SELECT_WIN_7 },
-  { true, ui::VKEY_9, true, false, true, SELECT_LAST_WIN },
+  { true, ui::VKEY_1, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_0 },
+  { true, ui::VKEY_2, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_1 },
+  { true, ui::VKEY_3, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_2 },
+  { true, ui::VKEY_4, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_3 },
+  { true, ui::VKEY_5, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_4 },
+  { true, ui::VKEY_6, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_5 },
+  { true, ui::VKEY_7, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_6 },
+  { true, ui::VKEY_8, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_WIN_7 },
+  { true, ui::VKEY_9, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, SELECT_LAST_WIN },
 
   // Window management shortcuts.
-  { true, ui::VKEY_OEM_4, false, false, true, WINDOW_SNAP_LEFT },
-  { true, ui::VKEY_OEM_6, false, false, true, WINDOW_SNAP_RIGHT },
-  { true, ui::VKEY_OEM_MINUS, false, false, true, WINDOW_MINIMIZE },
-  { true, ui::VKEY_OEM_PLUS, false, false, true, WINDOW_MAXIMIZE_RESTORE },
-  { true, ui::VKEY_OEM_PLUS, true, false, true, WINDOW_POSITION_CENTER },
+  { true, ui::VKEY_OEM_4, ui::EF_ALT_DOWN, WINDOW_SNAP_LEFT },
+  { true, ui::VKEY_OEM_6, ui::EF_ALT_DOWN, WINDOW_SNAP_RIGHT },
+  { true, ui::VKEY_OEM_MINUS, ui::EF_ALT_DOWN, WINDOW_MINIMIZE },
+  { true, ui::VKEY_OEM_PLUS, ui::EF_ALT_DOWN, WINDOW_MAXIMIZE_RESTORE },
+  { true, ui::VKEY_OEM_PLUS, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN,
+    WINDOW_POSITION_CENTER },
 
-  { true, ui::VKEY_F3, true, true, true, ROTATE_WINDOWS },
+  { true, ui::VKEY_F3,
+    ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    ROTATE_WINDOWS },
 #if !defined(NDEBUG)
-  { true, ui::VKEY_HOME, false, true, false, ROTATE_SCREEN },
-  { true, ui::VKEY_B, false, true, true, TOGGLE_DESKTOP_BACKGROUND_MODE },
-  { true, ui::VKEY_F11, false, true, false, TOGGLE_ROOT_WINDOW_FULL_SCREEN },
-  { true, ui::VKEY_L, true, true, true, PRINT_LAYER_HIERARCHY },
-  { true, ui::VKEY_W, true, true, true, PRINT_WINDOW_HIERARCHY },
+  { true, ui::VKEY_HOME, ui::EF_CONTROL_DOWN, ROTATE_SCREEN },
+  { true, ui::VKEY_B, ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    TOGGLE_DESKTOP_BACKGROUND_MODE },
+  { true, ui::VKEY_F11, ui::EF_CONTROL_DOWN, TOGGLE_ROOT_WINDOW_FULL_SCREEN },
+  { true, ui::VKEY_L, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    PRINT_LAYER_HIERARCHY },
+  { true, ui::VKEY_W, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN,
+    PRINT_WINDOW_HIERARCHY },
   // For testing on systems where Alt-Tab is already mapped.
-  { true, ui::VKEY_W, false, false, true, CYCLE_FORWARD_MRU },
-  { true, ui::VKEY_W, true, false, true, CYCLE_BACKWARD_MRU },
-  { true, ui::VKEY_F4, false, true, false, MONITOR_ADD_REMOVE },
-  { true, ui::VKEY_F4, true, true, false, MONITOR_CYCLE },
-  { true, ui::VKEY_HOME, true, true, false, MONITOR_TOGGLE_SCALE },
+  { true, ui::VKEY_W, ui::EF_ALT_DOWN, CYCLE_FORWARD_MRU },
+  { true, ui::VKEY_W, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN, CYCLE_BACKWARD_MRU },
+  { true, ui::VKEY_F4, ui::EF_CONTROL_DOWN, MONITOR_ADD_REMOVE },
+  { true, ui::VKEY_F4, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN, MONITOR_CYCLE },
+  { true, ui::VKEY_HOME, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN,
+    MONITOR_TOGGLE_SCALE },
 #endif
-  // trigger_on_press, KeyboardCode, shift, control, alt, AcceleratorAction
 };
 
 const size_t kAcceleratorDataLength = arraysize(kAcceleratorData);
 
 const AcceleratorAction kActionsAllowedAtLoginScreen[] = {
   BRIGHTNESS_DOWN,
   BRIGHTNESS_UP,
   NEXT_IME,
   PREVIOUS_IME,
   SWITCH_IME,  // Switch to another IME depending on the accelerator.
   TAKE_SCREENSHOT,
   TAKE_PARTIAL_SCREENSHOT,
   TOGGLE_CAPS_LOCK,
   TOGGLE_SPOKEN_FEEDBACK,
   VOLUME_DOWN,
   VOLUME_MUTE,
   VOLUME_UP,
   ROTATE_WINDOWS,
 #if !defined(NDEBUG)
   PRINT_LAYER_HIERARCHY,
   PRINT_WINDOW_HIERARCHY,
   ROTATE_SCREEN,
 #endif
 };
 
 const size_t kActionsAllowedAtLoginScreenLength =
     arraysize(kActionsAllowedAtLoginScreen);
 
 }  // namespace ash