1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.deskclock.actionbarmenu 18 19 import android.view.Menu 20 import android.view.MenuItem 21 22 /** 23 * Interface for handling a single menu item in action bar. 24 */ 25 interface MenuItemController { 26 /** 27 * Returns the menu item resource id that the controller manages. 28 */ 29 val id: Int 30 31 /** 32 * Create the menu item. 33 */ onCreateOptionsItemnull34 fun onCreateOptionsItem(menu: Menu) 35 36 /** 37 * Called immediately before the [MenuItem] is shown. 38 * 39 * @param item the [MenuItem] created by the controller 40 */ 41 fun onPrepareOptionsItem(item: MenuItem) 42 43 /** 44 * Attempts to handle the click action. 45 * 46 * @param item the [MenuItem] that was selected 47 * @return `true` if the action is handled by this controller 48 */ 49 fun onOptionsItemSelected(item: MenuItem): Boolean 50 }