| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.statusbar; |
| |
| import android.app.AlertDialog; |
| import android.app.Dialog; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.DialogInterface.OnClickListener; |
| import android.hardware.input.InputManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.ContextThemeWrapper; |
| import android.view.InputDevice; |
| import android.view.KeyCharacterMap; |
| import android.view.KeyEvent; |
| import android.view.KeyboardShortcutGroup; |
| import android.view.KeyboardShortcutInfo; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.Window; |
| import android.view.WindowManager.KeyboardShortcutsReceiver; |
| import android.widget.LinearLayout; |
| import android.widget.TextView; |
| |
| import com.android.systemui.R; |
| import com.android.systemui.recents.Recents; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static android.content.Context.LAYOUT_INFLATER_SERVICE; |
| import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG; |
| |
| /** |
| * Contains functionality for handling keyboard shortcuts. |
| */ |
| public class KeyboardShortcuts { |
| private static final String TAG = KeyboardShortcuts.class.getSimpleName(); |
| |
| private static final SparseArray<String> SPECIAL_CHARACTER_NAMES = new SparseArray<>(); |
| private static final SparseArray<String> MODIFIER_NAMES = new SparseArray<>(); |
| |
| private static void loadSpecialCharacterNames(Context context) { |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_HOME, context.getString(R.string.keyboard_key_home)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_BACK, context.getString(R.string.keyboard_key_back)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_DPAD_UP, context.getString(R.string.keyboard_key_dpad_up)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_DPAD_DOWN, context.getString(R.string.keyboard_key_dpad_down)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_DPAD_LEFT, context.getString(R.string.keyboard_key_dpad_left)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_DPAD_RIGHT, context.getString(R.string.keyboard_key_dpad_right)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_DPAD_CENTER, context.getString(R.string.keyboard_key_dpad_center)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_PERIOD, "."); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_TAB, context.getString(R.string.keyboard_key_tab)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_SPACE, context.getString(R.string.keyboard_key_space)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_ENTER, context.getString(R.string.keyboard_key_enter)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_DEL, context.getString(R.string.keyboard_key_backspace)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE, |
| context.getString(R.string.keyboard_key_media_play_pause)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_MEDIA_STOP, context.getString(R.string.keyboard_key_media_stop)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_MEDIA_NEXT, context.getString(R.string.keyboard_key_media_next)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_MEDIA_PREVIOUS, |
| context.getString(R.string.keyboard_key_media_previous)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_MEDIA_REWIND, |
| context.getString(R.string.keyboard_key_media_rewind)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_MEDIA_FAST_FORWARD, |
| context.getString(R.string.keyboard_key_media_fast_forward)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_PAGE_UP, context.getString(R.string.keyboard_key_page_up)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_PAGE_DOWN, context.getString(R.string.keyboard_key_page_down)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_A, |
| context.getString(R.string.keyboard_key_button_template, "A")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_B, |
| context.getString(R.string.keyboard_key_button_template, "B")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_C, |
| context.getString(R.string.keyboard_key_button_template, "C")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_X, |
| context.getString(R.string.keyboard_key_button_template, "X")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_Y, |
| context.getString(R.string.keyboard_key_button_template, "Y")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_Z, |
| context.getString(R.string.keyboard_key_button_template, "Z")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_L1, |
| context.getString(R.string.keyboard_key_button_template, "L1")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_R1, |
| context.getString(R.string.keyboard_key_button_template, "R1")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_L2, |
| context.getString(R.string.keyboard_key_button_template, "L2")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_R2, |
| context.getString(R.string.keyboard_key_button_template, "R2")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_START, |
| context.getString(R.string.keyboard_key_button_template, "Start")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_SELECT, |
| context.getString(R.string.keyboard_key_button_template, "Select")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BUTTON_MODE, |
| context.getString(R.string.keyboard_key_button_template, "Mode")); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_FORWARD_DEL, context.getString(R.string.keyboard_key_forward_del)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_ESCAPE, "Esc"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_SYSRQ, "SysRq"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_BREAK, "Break"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_SCROLL_LOCK, "Scroll Lock"); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_MOVE_HOME, context.getString(R.string.keyboard_key_move_home)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_MOVE_END, context.getString(R.string.keyboard_key_move_end)); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_INSERT, context.getString(R.string.keyboard_key_insert)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F1, "F1"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F2, "F2"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F3, "F3"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F4, "F4"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F5, "F5"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F6, "F6"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F7, "F7"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F8, "F8"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F9, "F9"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F10, "F10"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F11, "F11"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_F12, "F12"); |
| SPECIAL_CHARACTER_NAMES.put( |
| KeyEvent.KEYCODE_NUM_LOCK, context.getString(R.string.keyboard_key_num_lock)); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_0, |
| context.getString(R.string.keyboard_key_numpad_template, "0")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_1, |
| context.getString(R.string.keyboard_key_numpad_template, "1")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_2, |
| context.getString(R.string.keyboard_key_numpad_template, "2")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_3, |
| context.getString(R.string.keyboard_key_numpad_template, "3")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_4, |
| context.getString(R.string.keyboard_key_numpad_template, "4")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_5, |
| context.getString(R.string.keyboard_key_numpad_template, "5")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_6, |
| context.getString(R.string.keyboard_key_numpad_template, "6")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_7, |
| context.getString(R.string.keyboard_key_numpad_template, "7")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_8, |
| context.getString(R.string.keyboard_key_numpad_template, "8")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_9, |
| context.getString(R.string.keyboard_key_numpad_template, "9")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_DIVIDE, |
| context.getString(R.string.keyboard_key_numpad_template, "/")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_MULTIPLY, |
| context.getString(R.string.keyboard_key_numpad_template, "*")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_SUBTRACT, |
| context.getString(R.string.keyboard_key_numpad_template, "-")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_ADD, |
| context.getString(R.string.keyboard_key_numpad_template, "+")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_DOT, |
| context.getString(R.string.keyboard_key_numpad_template, ".")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_COMMA, |
| context.getString(R.string.keyboard_key_numpad_template, ",")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_ENTER, |
| context.getString(R.string.keyboard_key_numpad_template, |
| context.getString(R.string.keyboard_key_enter))); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_EQUALS, |
| context.getString(R.string.keyboard_key_numpad_template, "=")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_LEFT_PAREN, |
| context.getString(R.string.keyboard_key_numpad_template, "(")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_NUMPAD_RIGHT_PAREN, |
| context.getString(R.string.keyboard_key_numpad_template, ")")); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_ZENKAKU_HANKAKU, "半角/全角"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_EISU, "英数"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_MUHENKAN, "無変換"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_HENKAN, "変換"); |
| SPECIAL_CHARACTER_NAMES.put(KeyEvent.KEYCODE_KATAKANA_HIRAGANA, "かな"); |
| |
| MODIFIER_NAMES.put(KeyEvent.META_META_ON, "Meta"); |
| MODIFIER_NAMES.put(KeyEvent.META_CTRL_ON, "Ctrl"); |
| MODIFIER_NAMES.put(KeyEvent.META_ALT_ON, "Alt"); |
| MODIFIER_NAMES.put(KeyEvent.META_SHIFT_ON, "Shift"); |
| MODIFIER_NAMES.put(KeyEvent.META_SYM_ON, "Sym"); |
| MODIFIER_NAMES.put(KeyEvent.META_FUNCTION_ON, "Fn"); |
| } |
| |
| private final Handler mHandler = new Handler(Looper.getMainLooper()); |
| private final Context mContext; |
| private final OnClickListener dialogCloseListener = new DialogInterface.OnClickListener() { |
| public void onClick(DialogInterface dialog, int id) { |
| dismissKeyboardShortcutsDialog(); |
| } |
| }; |
| |
| private Dialog mKeyboardShortcutsDialog; |
| private KeyCharacterMap mKeyCharacterMap; |
| |
| public KeyboardShortcuts(Context context) { |
| this.mContext = new ContextThemeWrapper(context, android.R.style.Theme_Material_Light); |
| if (SPECIAL_CHARACTER_NAMES.size() == 0) { |
| loadSpecialCharacterNames(context); |
| } |
| } |
| |
| public void toggleKeyboardShortcuts(int deviceId) { |
| InputDevice inputDevice = InputManager.getInstance().getInputDevice(deviceId); |
| if (inputDevice != null) { |
| mKeyCharacterMap = inputDevice.getKeyCharacterMap(); |
| } |
| if (mKeyboardShortcutsDialog == null) { |
| Recents.getSystemServices().requestKeyboardShortcuts(mContext, |
| new KeyboardShortcutsReceiver() { |
| @Override |
| public void onKeyboardShortcutsReceived( |
| final List<KeyboardShortcutGroup> result) { |
| KeyboardShortcutGroup systemGroup = new KeyboardShortcutGroup( |
| mContext.getString(R.string.keyboard_shortcut_group_system), true); |
| systemGroup.addItem(new KeyboardShortcutInfo( |
| mContext.getString(R.string.keyboard_shortcut_group_system_home), |
| KeyEvent.KEYCODE_ENTER, KeyEvent.META_META_ON)); |
| systemGroup.addItem(new KeyboardShortcutInfo( |
| mContext.getString(R.string.keyboard_shortcut_group_system_back), |
| KeyEvent.KEYCODE_DEL, KeyEvent.META_META_ON)); |
| systemGroup.addItem(new KeyboardShortcutInfo( |
| mContext.getString(R.string.keyboard_shortcut_group_system_recents), |
| KeyEvent.KEYCODE_TAB, KeyEvent.META_ALT_ON)); |
| result.add(systemGroup); |
| showKeyboardShortcutsDialog(result); |
| } |
| }, deviceId); |
| } else { |
| dismissKeyboardShortcutsDialog(); |
| } |
| } |
| |
| public void dismissKeyboardShortcutsDialog() { |
| if (mKeyboardShortcutsDialog != null) { |
| mKeyboardShortcutsDialog.dismiss(); |
| mKeyboardShortcutsDialog = null; |
| } |
| } |
| |
| private void showKeyboardShortcutsDialog( |
| final List<KeyboardShortcutGroup> keyboardShortcutGroups) { |
| // Need to post on the main thread. |
| mHandler.post(new Runnable() { |
| @Override |
| public void run() { |
| handleShowKeyboardShortcuts(keyboardShortcutGroups); |
| } |
| }); |
| } |
| |
| private void handleShowKeyboardShortcuts(List<KeyboardShortcutGroup> keyboardShortcutGroups) { |
| AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(mContext); |
| LayoutInflater inflater = (LayoutInflater) mContext.getSystemService( |
| LAYOUT_INFLATER_SERVICE); |
| final View keyboardShortcutsView = inflater.inflate( |
| R.layout.keyboard_shortcuts_view, null); |
| populateKeyboardShortcuts((LinearLayout) keyboardShortcutsView.findViewById( |
| R.id.keyboard_shortcuts_container), keyboardShortcutGroups); |
| dialogBuilder.setView(keyboardShortcutsView); |
| dialogBuilder.setPositiveButton(R.string.quick_settings_done, dialogCloseListener); |
| mKeyboardShortcutsDialog = dialogBuilder.create(); |
| mKeyboardShortcutsDialog.setCanceledOnTouchOutside(true); |
| Window keyboardShortcutsWindow = mKeyboardShortcutsDialog.getWindow(); |
| keyboardShortcutsWindow.setType(TYPE_SYSTEM_DIALOG); |
| mKeyboardShortcutsDialog.show(); |
| } |
| |
| private void populateKeyboardShortcuts(LinearLayout keyboardShortcutsLayout, |
| List<KeyboardShortcutGroup> keyboardShortcutGroups) { |
| LayoutInflater inflater = LayoutInflater.from(mContext); |
| final int keyboardShortcutGroupsSize = keyboardShortcutGroups.size(); |
| for (int i = 0; i < keyboardShortcutGroupsSize; i++) { |
| KeyboardShortcutGroup group = keyboardShortcutGroups.get(i); |
| TextView categoryTitle = (TextView) inflater.inflate( |
| R.layout.keyboard_shortcuts_category_title, keyboardShortcutsLayout, false); |
| categoryTitle.setText(group.getLabel()); |
| categoryTitle.setTextColor(group.isSystemGroup() |
| ? mContext.getColor(R.color.ksh_system_group_color) |
| : mContext.getColor(R.color.ksh_application_group_color)); |
| keyboardShortcutsLayout.addView(categoryTitle); |
| |
| LinearLayout shortcutContainer = (LinearLayout) inflater.inflate( |
| R.layout.keyboard_shortcuts_container, keyboardShortcutsLayout, false); |
| final int itemsSize = group.getItems().size(); |
| for (int j = 0; j < itemsSize; j++) { |
| KeyboardShortcutInfo info = group.getItems().get(j); |
| if (info.getKeycode() != KeyEvent.KEYCODE_UNKNOWN |
| && !KeyCharacterMap.deviceHasKey(info.getKeycode())) { |
| // The user can't achieve this shortcut, so skipping. |
| Log.w(TAG, "Keyboard Shortcut contains key not on device, skipping."); |
| continue; |
| } |
| List<String> shortcutKeys = getHumanReadableShortcutKeys(info); |
| if (shortcutKeys == null) { |
| // Ignore shortcuts we can't display keys for. |
| Log.w(TAG, "Keyboard Shortcut contains unsupported keys, skipping."); |
| continue; |
| } |
| View shortcutView = inflater.inflate(R.layout.keyboard_shortcut_app_item, |
| shortcutContainer, false); |
| TextView textView = (TextView) shortcutView |
| .findViewById(R.id.keyboard_shortcuts_keyword); |
| textView.setText(info.getLabel()); |
| |
| ViewGroup shortcutItemsContainer = (ViewGroup) shortcutView |
| .findViewById(R.id.keyboard_shortcuts_item_container); |
| final int shortcutKeysSize = shortcutKeys.size(); |
| for (int k = 0; k < shortcutKeysSize; k++) { |
| String shortcutKey = shortcutKeys.get(k); |
| TextView shortcutKeyView = (TextView) inflater.inflate( |
| R.layout.keyboard_shortcuts_key_view, shortcutItemsContainer, false); |
| shortcutKeyView.setText(shortcutKey); |
| shortcutItemsContainer.addView(shortcutKeyView); |
| } |
| shortcutContainer.addView(shortcutView); |
| } |
| keyboardShortcutsLayout.addView(shortcutContainer); |
| if (i < keyboardShortcutGroupsSize - 1) { |
| View separator = inflater.inflate( |
| R.layout.keyboard_shortcuts_category_separator, keyboardShortcutsLayout, |
| false); |
| keyboardShortcutsLayout.addView(separator); |
| } |
| } |
| } |
| |
| private List<String> getHumanReadableShortcutKeys(KeyboardShortcutInfo info) { |
| List<String> shortcutKeys = getHumanReadableModifiers(info); |
| if (shortcutKeys == null) { |
| return null; |
| } |
| String displayLabelString; |
| if (info.getKeycode() == KeyEvent.KEYCODE_UNKNOWN) { |
| displayLabelString = String.valueOf(info.getBaseCharacter()); |
| } else if (SPECIAL_CHARACTER_NAMES.get(info.getKeycode()) != null) { |
| displayLabelString = SPECIAL_CHARACTER_NAMES.get(info.getKeycode()); |
| } else { |
| // TODO: Have a generic map for when we don't have the device's. |
| char displayLabel = mKeyCharacterMap == null |
| ? 0 : mKeyCharacterMap.getDisplayLabel(info.getKeycode()); |
| if (displayLabel != 0) { |
| displayLabelString = String.valueOf(displayLabel); |
| } else { |
| return null; |
| } |
| } |
| shortcutKeys.add(displayLabelString.toUpperCase()); |
| return shortcutKeys; |
| } |
| |
| private List<String> getHumanReadableModifiers(KeyboardShortcutInfo info) { |
| final List<String> shortcutKeys = new ArrayList<>(); |
| int modifiers = info.getModifiers(); |
| if (modifiers == 0) { |
| return shortcutKeys; |
| } |
| for(int i = 0; i < MODIFIER_NAMES.size(); ++i) { |
| final int supportedModifier = MODIFIER_NAMES.keyAt(i); |
| if ((modifiers & supportedModifier) != 0) { |
| shortcutKeys.add(MODIFIER_NAMES.get(supportedModifier).toUpperCase()); |
| modifiers &= ~supportedModifier; |
| } |
| } |
| if (modifiers != 0) { |
| // Remaining unsupported modifiers, don't show anything. |
| return null; |
| } |
| return shortcutKeys; |
| } |
| } |