1 /* 2 * Copyright (C) 2015 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.tv.menu; 18 19 import com.android.tv.menu.Menu.MenuShowReason; 20 21 import java.util.List; 22 23 /** 24 * An base interface for menu view. 25 */ 26 public interface IMenuView { 27 /** 28 * Sets menu rows. 29 */ 30 void setMenuRows(List<MenuRow> menuRows); 31 32 /** 33 * Shows the main menu. 34 * 35 * <p> The inherited class should show the menu and select the row corresponding to 36 * {@code rowIdToSelect}. If the menu is already visible, change the current selection to the 37 * given row. 38 * 39 * @param reason A reason why this is called. See {@link MenuShowReason}. 40 * @param rowIdToSelect An ID of the row which corresponds to the {@code reason}. 41 */ 42 void onShow(@MenuShowReason int reason, String rowIdToSelect, Runnable runnableAfterShow); 43 44 /** 45 * Hides the main menu 46 */ 47 void onHide(); 48 49 /** 50 * Updates the menu contents. 51 * 52 * <p>Returns <@code true> if the contents have been changed, otherwise {@code false}. 53 */ 54 boolean update(boolean menuActive); 55 56 /** 57 * Updates the menu row. 58 * 59 * <p>Returns <@code true> if the contents have been changed, otherwise {@code false}. 60 */ 61 boolean update(String rowId, boolean menuActive); 62 63 /** 64 * Checks if the menu view is visible or not. 65 */ 66 boolean isVisible(); 67 } 68
