WindowBackend.kt
/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.window
import android.app.Activity
import androidx.core.util.Consumer
import java.util.concurrent.Executor
/**
* Backing interface for [WindowManager] instances that serve as the default
* information supplier.
*/
public interface WindowBackend {
/**
* Registers a callback for layout changes of the window for the supplied [Activity].
* Must be called only after the it is attached to the window.
*/
public fun registerLayoutChangeCallback(
activity: Activity,
executor: Executor,
callback: Consumer<WindowLayoutInfo>
)
/**
* Unregisters a callback for window layout changes of the [Activity] window.
*/
public fun unregisterLayoutChangeCallback(callback: Consumer<WindowLayoutInfo>)
}