[flexiglass] Removes LockscreenScene.UseLockscreenContent

import kotlinx.coroutines.flow.map

import kotlinx.coroutines.flow.stateIn

/** Set this to `true` to use the LockscreenContent replacement of KeyguardRootView. */

private val UseLockscreenContent = false

/** The lock screen scene shows when the device is locked. */

@SysUISingleton

class LockscreenScene

    @Application private val applicationScope: CoroutineScope,

    private val viewModel: LockscreenSceneViewModel,

    private val lockscreenContent: Lazy<LockscreenContent>,

    private val viewBasedLockscreenContent: Lazy<ViewBasedLockscreenContent>,

) : ComposableScene {

    override val key = SceneKey.Lockscreen

    ) {

        LockscreenScene(

            lockscreenContent = lockscreenContent,

            viewBasedLockscreenContent = viewBasedLockscreenContent,

            modifier = modifier,

        )

    }

}

@Composable

private fun SceneScope.LockscreenScene(

private fun LockscreenScene(

    lockscreenContent: Lazy<LockscreenContent>,

    viewBasedLockscreenContent: Lazy<ViewBasedLockscreenContent>,

    modifier: Modifier = Modifier,

) {

    if (UseLockscreenContent) {

    lockscreenContent

        .get()

        .Content(

            modifier = modifier.fillMaxSize(),

        )

    } else {

        with(viewBasedLockscreenContent.get()) {

            Content(

                modifier = modifier.fillMaxSize(),

            )

        }

    }

}

/*

 * 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.keyguard.ui.composable

import android.graphics.Rect

import android.view.View

import android.view.ViewGroup

import androidx.compose.foundation.layout.fillMaxSize

import androidx.compose.runtime.Composable

import androidx.compose.runtime.collectAsState

import androidx.compose.runtime.getValue

import androidx.compose.ui.Modifier

import androidx.compose.ui.graphics.toComposeRect

import androidx.compose.ui.layout.Layout

import androidx.compose.ui.layout.onPlaced

import androidx.compose.ui.viewinterop.AndroidView

import androidx.core.view.isVisible

import com.android.compose.animation.scene.SceneScope

import com.android.systemui.keyguard.qualifiers.KeyguardRootView

import com.android.systemui.keyguard.ui.viewmodel.KeyguardRootViewModel

import com.android.systemui.keyguard.ui.viewmodel.LockscreenSceneViewModel

import com.android.systemui.notifications.ui.composable.NotificationStack

import com.android.systemui.res.R

import javax.inject.Inject

/**

 * Renders the content of the lockscreen.

 *

 * This is different from [LockscreenContent] (which is pure compose) and uses a view-based

 * implementation of the lockscreen scene content that relies on [KeyguardRootView].

 *

 * TODO(b/316211368): remove this once [LockscreenContent] is feature complete.

 */

class ViewBasedLockscreenContent

@Inject

constructor(

    private val lockscreenSceneViewModel: LockscreenSceneViewModel,

    @KeyguardRootView private val viewProvider: () -> @JvmSuppressWildcards View,

    private val keyguardRootViewModel: KeyguardRootViewModel,

) {

    @Composable

    fun SceneScope.Content(

        modifier: Modifier = Modifier,

    ) {

        fun findSettingsMenu(): View {

            return viewProvider().requireViewById(R.id.keyguard_settings_button)

        }

        LockscreenLongPress(

            viewModel = lockscreenSceneViewModel.longPress,

            modifier = modifier,

        ) { onSettingsMenuPlaced ->

            AndroidView(

                factory = { _ ->

                    val keyguardRootView = viewProvider()

                    // Remove the KeyguardRootView from any parent it might already have in legacy

                    // code just in case (a view can't have two parents).

                    (keyguardRootView.parent as? ViewGroup)?.removeView(keyguardRootView)

                    keyguardRootView

                },

                modifier = Modifier.fillMaxSize(),

            )

            val notificationStackPosition by

                keyguardRootViewModel.notificationBounds.collectAsState()

            Layout(

                modifier =

                    Modifier.fillMaxSize().onPlaced {

                        val settingsMenuView = findSettingsMenu()

                        onSettingsMenuPlaced(

                            if (settingsMenuView.isVisible) {

                                val bounds = Rect()

                                settingsMenuView.getHitRect(bounds)

                                bounds.toComposeRect()

                            } else {

                                null

                            }

                        )

                    },

                content = {

                    NotificationStack(

                        viewModel = lockscreenSceneViewModel.notifications,

                        isScrimVisible = false,

                    )

                }

            ) { measurables, constraints ->

                check(measurables.size == 1)

                val height = notificationStackPosition.height.toInt()

                val childConstraints = constraints.copy(minHeight = height, maxHeight = height)

                val placeable = measurables[0].measure(childConstraints)

                layout(constraints.maxWidth, constraints.maxHeight) {

                    val start = (constraints.maxWidth - placeable.measuredWidth) / 2

                    placeable.placeRelative(x = start, y = notificationStackPosition.top.toInt())

                }

            }

        }

    }

}