Merge "Implement repository for display focus in SystemUI" into main

/*

 * Copyright (C) 2024 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 com.android.systemui.display.data.repository

import android.annotation.MainThread

import android.view.Display.DEFAULT_DISPLAY

import com.android.systemui.dagger.SysUISingleton

import com.android.systemui.dagger.qualifiers.Application

import com.android.systemui.dagger.qualifiers.Main

import com.android.systemui.log.LogBuffer

import com.android.systemui.log.core.LogLevel

import com.android.systemui.log.dagger.FocusedDisplayRepoLog

import com.android.systemui.utils.coroutines.flow.conflatedCallbackFlow

import com.android.wm.shell.shared.FocusTransitionListener

import com.android.wm.shell.shared.ShellTransitions

import java.util.concurrent.Executor

import javax.inject.Inject

import kotlinx.coroutines.CoroutineScope

import kotlinx.coroutines.channels.awaitClose

import kotlinx.coroutines.flow.Flow

import kotlinx.coroutines.flow.SharingStarted

import kotlinx.coroutines.flow.StateFlow

import kotlinx.coroutines.flow.onEach

import kotlinx.coroutines.flow.stateIn

/** Repository tracking display focus. */

@SysUISingleton

@MainThread

class FocusedDisplayRepository

@Inject

constructor(

    @Application val scope: CoroutineScope,

    @Main private val mainExecutor: Executor,

    transitions: ShellTransitions,

    @FocusedDisplayRepoLog logBuffer: LogBuffer,

) {

    val focusedTask: Flow<Int> =

        conflatedCallbackFlow {

                val listener = FocusTransitionListener { displayId -> trySend(displayId) }

                transitions.setFocusTransitionListener(listener, mainExecutor)

                awaitClose { transitions.unsetFocusTransitionListener(listener) }

            }

            .onEach {

                logBuffer.log(

                    "FocusedDisplayRepository",

                    LogLevel.INFO,

                    { str1 = it.toString() },

                    { "Newly focused display: $str1" },

                )

            }

    /** Provides the currently focused display. */

    val focusedDisplayId: StateFlow<Int>

        get() = focusedTask.stateIn(scope, SharingStarted.Eagerly, DEFAULT_DISPLAY)

}

/*

 * Copyright (C) 2023 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 com.android.systemui.log.dagger

import javax.inject.Qualifier

/** A [com.android.systemui.log.LogBuffer] for display metrics related logging. */

@Qualifier

@MustBeDocumented

@Retention(AnnotationRetention.RUNTIME)

annotation class FocusedDisplayRepoLog

        return factory.create("DisplayMetricsRepo", 50);

    }

    /** Provides a {@link LogBuffer} for focus related logs. */

    @Provides

    @SysUISingleton

    @FocusedDisplayRepoLog

    public static LogBuffer provideFocusedDisplayRepoLogBuffer(LogBufferFactory factory) {

        return factory.create("FocusedDisplayRepo", 50);

    }

    /** Provides a {@link LogBuffer} for the scene framework. */

    @Provides

    @SysUISingleton