1 /* 2 * Copyright (C) 2023 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 package com.android.launcher3.allapps; 17 18 /** 19 * An interface for listening to all-apps open-close transition 20 */ 21 public interface AllAppsTransitionListener { 22 /** 23 * Called when the transition starts 24 * @param toAllApps {@code true} if this transition is supposed to end in the AppApps UI 25 * 26 * @see ActivityAllAppsContainerView 27 */ onAllAppsTransitionStart(boolean toAllApps)28 void onAllAppsTransitionStart(boolean toAllApps); 29 30 /** 31 * Called when the transition ends 32 * @param toAllApps {@code true} if the final state is all-apps 33 * 34 * @see ActivityAllAppsContainerView 35 */ onAllAppsTransitionEnd(boolean toAllApps)36 void onAllAppsTransitionEnd(boolean toAllApps); 37 } 38