1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17 package com.android.deskclock.actionbarmenu; 18 19 import android.app.Activity; 20 import android.view.Menu; 21 import android.view.MenuItem; 22 23 /** 24 * {@link MenuItemController} for handling navigation up button in actionbar. It is a special 25 * menu item because it's not inflated through menu.xml, and has its own predefined id. 26 */ 27 public final class NavUpMenuItemController extends AbstractMenuItemController { 28 29 private final Activity mActivity; 30 31 public NavUpMenuItemController(Activity activity) { 32 mActivity = activity; 33 } 34 35 @Override 36 public int getId() { 37 return android.R.id.home; 38 } 39 40 @Override 41 public void showMenuItem(Menu menu) { 42 // Intentionally left empty, because back button in actionbar is not shown by inflating 43 // menu layouts. It's directly controlled by actionbar. 44 } 45 46 @Override 47 public boolean handleMenuItemClick(MenuItem item) { 48 mActivity.finish(); 49 return true; 50 } 51 } 52
