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 package com.android.wm.shell.windowdecor.common.viewhost 17 18 import android.content.Context 19 import android.view.Display 20 import android.view.SurfaceControl 21 22 /** An interface for a supplier of [WindowDecorViewHost]s. */ 23 interface WindowDecorViewHostSupplier<T : WindowDecorViewHost> { 24 /** Acquire a [WindowDecorViewHost]. */ acquirenull25 fun acquire(context: Context, display: Display): T 26 27 /** 28 * Release a [WindowDecorViewHost] when it is no longer used. 29 * 30 * @param viewHost the [WindowDecorViewHost] to release 31 * @param t a transaction that may be used to remove any underlying backing [SurfaceControl] 32 * that are hosting this [WindowDecorViewHost]. The supplier is not expected to apply the 33 * transaction. It should be applied by the owner of this supplier. 34 */ 35 fun release(viewHost: T, t: SurfaceControl.Transaction) 36 } 37