| /* |
| * 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.os.Handler; |
| import android.os.Looper; |
| import android.view.ContextThemeWrapper; |
| 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.Gravity.TOP; |
| import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG; |
| |
| /** |
| * Contains functionality for handling keyboard shortcuts. |
| */ |
| public class KeyboardShortcuts { |
| private static final char SYSTEM_HOME_BASE_CHARACTER = '\u2386'; |
| private static final char SYSTEM_BACK_BASE_CHARACTER = '\u007F'; |
| private static final char SYSTEM_RECENTS_BASE_CHARACTER = '\u0009'; |
| |
| 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; |
| |
| public KeyboardShortcuts(Context context) { |
| this.mContext = new ContextThemeWrapper(context, android.R.style.Theme_Material_Light); |
| } |
| |
| public void toggleKeyboardShortcuts() { |
| 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), |
| SYSTEM_HOME_BASE_CHARACTER, KeyEvent.META_META_ON)); |
| systemGroup.addItem(new KeyboardShortcutInfo( |
| mContext.getString(R.string.keyboard_shortcut_group_system_back), |
| SYSTEM_BACK_BASE_CHARACTER, KeyEvent.META_META_ON)); |
| systemGroup.addItem(new KeyboardShortcutInfo( |
| mContext.getString(R.string.keyboard_shortcut_group_system_recents), |
| SYSTEM_RECENTS_BASE_CHARACTER, KeyEvent.META_ALT_ON)); |
| result.add(systemGroup); |
| showKeyboardShortcutsDialog(result); |
| } |
| }); |
| } 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); |
| 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); |
| List<String> shortcutKeys = getHumanReadableShortcutKeys(info); |
| 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) { |
| // TODO: fix the shortcuts. Find or build an util which can produce human readable |
| // names of the baseCharacter and the modifiers. |
| List<String> shortcutKeys = new ArrayList<>(); |
| shortcutKeys.add(KeyEvent.metaStateToString(info.getModifiers()).toUpperCase()); |
| shortcutKeys.add(Character.getName(info.getBaseCharacter()).toUpperCase()); |
| return shortcutKeys; |
| } |
| } |