1 /* 2 * Copyright (C) 2024 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.wm.shell.compatui.api 18 19 /** 20 * Abstraction for all the possible Compat UI Component events. 21 */ 22 interface CompatUIEvent { 23 /** 24 * Unique event identifier 25 */ 26 val eventId: Int 27 28 @Suppress("UNCHECKED_CAST") asTypenull29 fun <T : CompatUIEvent> asType(): T? = this as? T 30 31 fun <T : CompatUIEvent> asType(clazz: Class<T>): T? { 32 return if (clazz.isInstance(this)) clazz.cast(this) else null 33 } 34 }