Merge "Show allowlisted widgets in communal hub" into main

19 files changed, 398 insertions, 92 deletions

diff --git a/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/CommunalGridLayout.kt b/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/CommunalGridLayout.kt
index 4ed78b3b95ed..33024f764710 100644
--- a/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/CommunalGridLayout.kt
+++ b/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/CommunalGridLayout.kt
@@ -16,6 +16,7 @@
 
 package com.android.systemui.communal.layout.ui.compose
 
+import android.util.SizeF
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
@@ -54,7 +55,14 @@ fun CommunalGridLayout(
                         Row(
                             modifier = Modifier.height(layoutConfig.cardHeight(cardInfo.size)),
                         ) {
-                            cardInfo.card.Content(Modifier.fillMaxSize())
+                            cardInfo.card.Content(
+                                modifier = Modifier.fillMaxSize(),
+                                size =
+                                    SizeF(
+                                        layoutConfig.cardWidth.value,
+                                        layoutConfig.cardHeight(cardInfo.size).value,
+                                    ),
+                            )
                         }
                     }
                 }
diff --git a/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/config/CommunalGridLayoutCard.kt b/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/config/CommunalGridLayoutCard.kt
index ac8aa67fa4bf..4b2a156c1dbd 100644
--- a/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/config/CommunalGridLayoutCard.kt
+++ b/packages/SystemUI/communal/layout/src/com/android/systemui/communal/layout/ui/compose/config/CommunalGridLayoutCard.kt
@@ -16,6 +16,7 @@
 
 package com.android.systemui.communal.layout.ui.compose.config
 
+import android.util.SizeF
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 
@@ -26,8 +27,11 @@ abstract class CommunalGridLayoutCard {
      *
      * To host non-Compose views, see
      * https://developer.android.com/jetpack/compose/migrate/interoperability-apis/views-in-compose.
+     *
+     * @param size The size given to the card. Content of the card should fill all this space, given
+     *   that margins and paddings have been taken care of by the layout.
      */
-    @Composable abstract fun Content(modifier: Modifier)
+    @Composable abstract fun Content(modifier: Modifier, size: SizeF)
 
     /**
      * Sizes supported by the card.
diff --git a/packages/SystemUI/communal/layout/tests/src/com/android/systemui/communal/layout/CommunalLayoutEngineTest.kt b/packages/SystemUI/communal/layout/tests/src/com/android/systemui/communal/layout/CommunalLayoutEngineTest.kt
index fdf65f5d5cc7..c1974caa5628 100644
--- a/packages/SystemUI/communal/layout/tests/src/com/android/systemui/communal/layout/CommunalLayoutEngineTest.kt
+++ b/packages/SystemUI/communal/layout/tests/src/com/android/systemui/communal/layout/CommunalLayoutEngineTest.kt
@@ -1,5 +1,6 @@
 package com.android.systemui.communal.layout
 
+import android.util.SizeF
 import androidx.compose.material3.Card
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
@@ -91,7 +92,7 @@ class CommunalLayoutEngineTest {
             override val supportedSizes = listOf(size)
 
             @Composable
-            override fun Content(modifier: Modifier) {
+            override fun Content(modifier: Modifier, size: SizeF) {
                 Card(modifier = modifier, content = {})
             }
         }
diff --git a/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt b/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt
index 3d827fb5c9a6..b8fb26406801 100644
--- a/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt
+++ b/packages/SystemUI/compose/features/src/com/android/systemui/communal/ui/compose/CommunalHub.kt
@@ -1,5 +1,8 @@
 package com.android.systemui.communal.ui.compose
 
+import android.appwidget.AppWidgetHostView
+import android.os.Bundle
+import android.util.SizeF
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
@@ -12,9 +15,12 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.dimensionResource
 import androidx.compose.ui.res.integerResource
+import androidx.compose.ui.viewinterop.AndroidView
 import com.android.systemui.communal.layout.ui.compose.CommunalGridLayout
 import com.android.systemui.communal.layout.ui.compose.config.CommunalGridLayoutCard
 import com.android.systemui.communal.layout.ui.compose.config.CommunalGridLayoutConfig
+import com.android.systemui.communal.shared.model.CommunalContentSize
+import com.android.systemui.communal.ui.model.CommunalContentUiModel
 import com.android.systemui.communal.ui.viewmodel.CommunalViewModel
 import com.android.systemui.res.R
 
@@ -24,6 +30,7 @@ fun CommunalHub(
     viewModel: CommunalViewModel,
 ) {
     val showTutorial by viewModel.showTutorialContent.collectAsState(initial = false)
+    val widgetContent by viewModel.widgetContent.collectAsState(initial = emptyList())
     Box(
         modifier = modifier.fillMaxSize().background(Color.White),
     ) {
@@ -36,7 +43,7 @@ fun CommunalHub(
                     gridHeight = dimensionResource(R.dimen.communal_grid_height),
                     gridColumnsPerCard = integerResource(R.integer.communal_grid_columns_per_card),
                 ),
-            communalCards = if (showTutorial) tutorialContent else emptyList(),
+            communalCards = if (showTutorial) tutorialContent else widgetContent.map(::contentCard),
         )
     }
 }
@@ -58,8 +65,37 @@ private fun tutorialCard(size: CommunalGridLayoutCard.Size): CommunalGridLayoutC
         override val supportedSizes = listOf(size)
 
         @Composable
-        override fun Content(modifier: Modifier) {
+        override fun Content(modifier: Modifier, size: SizeF) {
             Card(modifier = modifier, content = {})
         }
     }
 }
+
+private fun contentCard(model: CommunalContentUiModel): CommunalGridLayoutCard {
+    return object : CommunalGridLayoutCard() {
+        override val supportedSizes = listOf(convertToCardSize(model.size))
+        override val priority = model.priority
+
+        @Composable
+        override fun Content(modifier: Modifier, size: SizeF) {
+            AndroidView(
+                modifier = modifier,
+                factory = {
+                    model.view.apply {
+                        if (this is AppWidgetHostView) {
+                            updateAppWidgetSize(Bundle(), listOf(size))
+                        }
+                    }
+                },
+            )
+        }
+    }
+}
+
+private fun convertToCardSize(size: CommunalContentSize): CommunalGridLayoutCard.Size {
+    return when (size) {
+        CommunalContentSize.FULL -> CommunalGridLayoutCard.Size.FULL
+        CommunalContentSize.HALF -> CommunalGridLayoutCard.Size.HALF
+        CommunalContentSize.THIRD -> CommunalGridLayoutCard.Size.THIRD
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/communal/data/model/CommunalWidgetMetadata.kt b/packages/SystemUI/src/com/android/systemui/communal/data/model/CommunalWidgetMetadata.kt
index f9c4f29afee9..1a214ba5a3d9 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/data/model/CommunalWidgetMetadata.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/data/model/CommunalWidgetMetadata.kt
@@ -16,7 +16,7 @@
 
 package com.android.systemui.communal.data.model
 
-import com.android.systemui.communal.shared.CommunalContentSize
+import com.android.systemui.communal.shared.model.CommunalContentSize
 
 /** Metadata for the default widgets */
 data class CommunalWidgetMetadata(
diff --git a/packages/SystemUI/src/com/android/systemui/communal/data/repository/CommunalWidgetRepository.kt b/packages/SystemUI/src/com/android/systemui/communal/data/repository/CommunalWidgetRepository.kt
index f13b62fbfeb9..77025dc8839a 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/data/repository/CommunalWidgetRepository.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/data/repository/CommunalWidgetRepository.kt
@@ -20,6 +20,7 @@ import android.appwidget.AppWidgetHost
 import android.appwidget.AppWidgetManager
 import android.appwidget.AppWidgetProviderInfo
 import android.content.BroadcastReceiver
+import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
@@ -28,11 +29,12 @@ import android.os.UserManager
 import com.android.systemui.broadcast.BroadcastDispatcher
 import com.android.systemui.common.coroutine.ChannelExt.trySendWithFailureLogging
 import com.android.systemui.communal.data.model.CommunalWidgetMetadata
-import com.android.systemui.communal.shared.CommunalAppWidgetInfo
-import com.android.systemui.communal.shared.CommunalContentSize
+import com.android.systemui.communal.shared.model.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalContentSize
+import com.android.systemui.communal.shared.model.CommunalWidgetContentModel
 import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.dagger.qualifiers.Application
-import com.android.systemui.flags.FeatureFlags
+import com.android.systemui.flags.FeatureFlagsClassic
 import com.android.systemui.flags.Flags
 import com.android.systemui.log.LogBuffer
 import com.android.systemui.log.core.Logger
@@ -43,6 +45,7 @@ import javax.inject.Inject
 import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.callbackFlow
+import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.map
 
 /** Encapsulates the state of widgets for communal mode. */
@@ -52,6 +55,9 @@ interface CommunalWidgetRepository {
 
     /** Widgets that are allowed to render in the glanceable hub */
     val communalWidgetAllowlist: List<CommunalWidgetMetadata>
+
+    /** A flow of information about all the communal widgets to show. */
+    val communalWidgets: Flow<List<CommunalWidgetContentModel>>
 }
 
 @SysUISingleton
@@ -67,7 +73,7 @@ constructor(
     private val userManager: UserManager,
     private val userTracker: UserTracker,
     @CommunalLog logBuffer: LogBuffer,
-    featureFlags: FeatureFlags,
+    featureFlags: FeatureFlagsClassic,
 ) : CommunalWidgetRepository {
     companion object {
         const val TAG = "CommunalWidgetRepository"
@@ -88,49 +94,59 @@ constructor(
     // Widgets that should be rendered in communal mode.
     private val widgets: HashMap<Int, CommunalAppWidgetInfo> = hashMapOf()
 
-    private val isUserUnlocked: Flow<Boolean> = callbackFlow {
-        if (!featureFlags.isEnabled(Flags.WIDGET_ON_KEYGUARD)) {
-            awaitClose()
-        }
-
-        fun isUserUnlockingOrUnlocked(): Boolean {
-            return userManager.isUserUnlockingOrUnlocked(userTracker.userHandle)
-        }
-
-        fun send() {
-            trySendWithFailureLogging(isUserUnlockingOrUnlocked(), TAG)
-        }
+    private val isUserUnlocked: Flow<Boolean> =
+        callbackFlow {
+                if (!communalRepository.isCommunalEnabled) {
+                    awaitClose()
+                }
 
-        if (isUserUnlockingOrUnlocked()) {
-            send()
-            awaitClose()
-        } else {
-            val receiver =
-                object : BroadcastReceiver() {
-                    override fun onReceive(context: Context?, intent: Intent?) {
-                        send()
-                    }
+                fun isUserUnlockingOrUnlocked(): Boolean {
+                    return userManager.isUserUnlockingOrUnlocked(userTracker.userHandle)
                 }
 
-            broadcastDispatcher.registerReceiver(
-                receiver,
-                IntentFilter(Intent.ACTION_USER_UNLOCKED),
-            )
+                fun send() {
+                    trySendWithFailureLogging(isUserUnlockingOrUnlocked(), TAG)
+                }
 
-            awaitClose { broadcastDispatcher.unregisterReceiver(receiver) }
+                if (isUserUnlockingOrUnlocked()) {
+                    send()
+                    awaitClose()
+                } else {
+                    val receiver =
+                        object : BroadcastReceiver() {
+                            override fun onReceive(context: Context?, intent: Intent?) {
+                                send()
+                            }
+                        }
+
+                    broadcastDispatcher.registerReceiver(
+                        receiver,
+                        IntentFilter(Intent.ACTION_USER_UNLOCKED),
+                    )
+
+                    awaitClose { broadcastDispatcher.unregisterReceiver(receiver) }
+                }
+            }
+            .distinctUntilChanged()
+
+    private val isHostActive: Flow<Boolean> =
+        isUserUnlocked.map {
+            if (it) {
+                startListening()
+                true
+            } else {
+                stopListening()
+                clearWidgets()
+                false
+            }
         }
-    }
 
     override val stopwatchAppWidgetInfo: Flow<CommunalAppWidgetInfo?> =
-        isUserUnlocked.map { isUserUnlocked ->
-            if (!isUserUnlocked) {
-                clearWidgets()
-                stopListening()
+        isHostActive.map { isHostActive ->
+            if (!isHostActive || !featureFlags.isEnabled(Flags.WIDGET_ON_KEYGUARD)) {
                 return@map null
             }
 
-            startListening()
-
             val providerInfo =
                 appWidgetManager.installedProviders.find {
                     it.loadLabel(packageManager).equals(WIDGET_LABEL)
@@ -144,6 +160,42 @@ constructor(
             return@map addWidget(providerInfo)
         }
 
+    override val communalWidgets: Flow<List<CommunalWidgetContentModel>> =
+        isHostActive.map { isHostActive ->
+            if (!isHostActive) {
+                return@map emptyList()
+            }
+
+            // The allowlist should be fetched from the local database with all the metadata tied to
+            // a widget, including an appWidgetId if it has been bound. Before the database is set
+            // up, we are going to use the app widget host as the source of truth for bound widgets,
+            // and rebind each time on boot.
+
+            // Remove all previously bound widgets.
+            appWidgetHost.appWidgetIds.forEach { appWidgetHost.deleteAppWidgetId(it) }
+
+            val inventory = mutableListOf<CommunalWidgetContentModel>()
+
+            // Bind all widgets from the allowlist.
+            communalWidgetAllowlist.forEach {
+                val id = appWidgetHost.allocateAppWidgetId()
+                appWidgetManager.bindAppWidgetId(
+                    id,
+                    ComponentName.unflattenFromString(it.componentName),
+                )
+
+                inventory.add(
+                    CommunalWidgetContentModel(
+                        appWidgetId = id,
+                        providerInfo = appWidgetManager.getAppWidgetInfo(id),
+                        priority = it.priority,
+                    )
+                )
+            }
+
+            return@map inventory.toList()
+        }
+
     private fun getWidgetAllowlist(): List<CommunalWidgetMetadata> {
         val componentNames =
             applicationContext.resources.getStringArray(R.array.config_communalWidgetAllowlist)
@@ -151,7 +203,7 @@ constructor(
             CommunalWidgetMetadata(
                 componentName = name,
                 priority = componentNames.size - index,
-                sizes = listOf(CommunalContentSize.HALF)
+                sizes = listOf(CommunalContentSize.HALF),
             )
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt b/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt
index 04bb6ae75e60..62387079ab35 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/domain/interactor/CommunalInteractor.kt
@@ -18,7 +18,8 @@ package com.android.systemui.communal.domain.interactor
 
 import com.android.systemui.communal.data.repository.CommunalRepository
 import com.android.systemui.communal.data.repository.CommunalWidgetRepository
-import com.android.systemui.communal.shared.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalWidgetContentModel
 import com.android.systemui.dagger.SysUISingleton
 import javax.inject.Inject
 import kotlinx.coroutines.flow.Flow
@@ -38,4 +39,12 @@ constructor(
 
     /** A flow of info about the widget to be displayed, or null if widget is unavailable. */
     val appWidgetInfo: Flow<CommunalAppWidgetInfo?> = widgetRepository.stopwatchAppWidgetInfo
+
+    /**
+     * A flow of information about widgets to be shown in communal hub.
+     *
+     * Currently only showing persistent widgets that have been bound to the app widget service
+     * (have an allocated id).
+     */
+    val widgetContent: Flow<List<CommunalWidgetContentModel>> = widgetRepository.communalWidgets
 }
diff --git a/packages/SystemUI/src/com/android/systemui/communal/shared/CommunalContentSize.kt b/packages/SystemUI/src/com/android/systemui/communal/shared/CommunalContentSize.kt
deleted file mode 100644
index 0bd7d86c972d..000000000000
--- a/packages/SystemUI/src/com/android/systemui/communal/shared/CommunalContentSize.kt
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.android.systemui.communal.shared
-
-/** Supported sizes for communal content in the layout grid. */
-enum class CommunalContentSize {
-    FULL,
-    HALF,
-    THIRD,
-}
diff --git a/packages/SystemUI/src/com/android/systemui/communal/shared/CommunalAppWidgetInfo.kt b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalAppWidgetInfo.kt
index 0803a01b93b8..109ed2da7e48 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/shared/CommunalAppWidgetInfo.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalAppWidgetInfo.kt
@@ -15,7 +15,7 @@
  *
  */
 
-package com.android.systemui.communal.shared
+package com.android.systemui.communal.shared.model
 
 import android.appwidget.AppWidgetProviderInfo
 
diff --git a/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalContentCategory.kt b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalContentCategory.kt
new file mode 100644
index 000000000000..7f05b9cd4943
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalContentCategory.kt
@@ -0,0 +1,25 @@
+/*
+ * 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.communal.shared.model
+
+enum class CommunalContentCategory {
+    /** The content persists in the communal hub until removed by the user. */
+    PERSISTENT,
+
+    /** The content temporarily shows up in the communal hub when certain conditions are met. */
+    TRANSIENT,
+}
diff --git a/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalContentSize.kt b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalContentSize.kt
new file mode 100644
index 000000000000..39a6476929ed
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalContentSize.kt
@@ -0,0 +1,29 @@
+/*
+ * 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.communal.shared.model
+
+/** Supported sizes for communal content in the layout grid. */
+enum class CommunalContentSize {
+    /** Content takes the full height of the column. */
+    FULL,
+
+    /** Content takes half of the height of the column. */
+    HALF,
+
+    /** Content takes a third of the height of the column. */
+    THIRD,
+}
diff --git a/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalWidgetContentModel.kt b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalWidgetContentModel.kt
new file mode 100644
index 000000000000..e141dc40477c
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/communal/shared/model/CommunalWidgetContentModel.kt
@@ -0,0 +1,26 @@
+/*
+ * 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.communal.shared.model
+
+import android.appwidget.AppWidgetProviderInfo
+
+/** Encapsulates data for a communal widget. */
+data class CommunalWidgetContentModel(
+    val appWidgetId: Int,
+    val providerInfo: AppWidgetProviderInfo,
+    val priority: Int,
+)
diff --git a/packages/SystemUI/src/com/android/systemui/communal/ui/adapter/CommunalWidgetViewAdapter.kt b/packages/SystemUI/src/com/android/systemui/communal/ui/adapter/CommunalWidgetViewAdapter.kt
index 2a08d7f6bc28..0daf7b5610e8 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/ui/adapter/CommunalWidgetViewAdapter.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/ui/adapter/CommunalWidgetViewAdapter.kt
@@ -20,7 +20,7 @@ import android.appwidget.AppWidgetHost
 import android.appwidget.AppWidgetManager
 import android.content.Context
 import android.util.SizeF
-import com.android.systemui.communal.shared.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalAppWidgetInfo
 import com.android.systemui.communal.ui.view.CommunalWidgetWrapper
 import com.android.systemui.dagger.qualifiers.Application
 import com.android.systemui.log.LogBuffer
diff --git a/packages/SystemUI/src/com/android/systemui/communal/ui/model/CommunalContentUiModel.kt b/packages/SystemUI/src/com/android/systemui/communal/ui/model/CommunalContentUiModel.kt
new file mode 100644
index 000000000000..98060dc1dceb
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/communal/ui/model/CommunalContentUiModel.kt
@@ -0,0 +1,15 @@
+package com.android.systemui.communal.ui.model
+
+import android.view.View
+import com.android.systemui.communal.shared.model.CommunalContentSize
+
+/**
+ * Encapsulates data for a communal content that holds a view.
+ *
+ * This model stays in the UI layer.
+ */
+data class CommunalContentUiModel(
+    val view: View,
+    val size: CommunalContentSize,
+    val priority: Int,
+)
diff --git a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalViewModel.kt b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalViewModel.kt
index ddeb1d67b945..25c64eafe255 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalViewModel.kt
@@ -16,17 +16,43 @@
 
 package com.android.systemui.communal.ui.viewmodel
 
+import android.appwidget.AppWidgetHost
+import android.content.Context
+import com.android.systemui.communal.domain.interactor.CommunalInteractor
 import com.android.systemui.communal.domain.interactor.CommunalTutorialInteractor
+import com.android.systemui.communal.shared.model.CommunalContentSize
+import com.android.systemui.communal.ui.model.CommunalContentUiModel
 import com.android.systemui.dagger.SysUISingleton
+import com.android.systemui.dagger.qualifiers.Application
 import javax.inject.Inject
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
 
 @SysUISingleton
 class CommunalViewModel
 @Inject
 constructor(
+    @Application private val context: Context,
+    private val appWidgetHost: AppWidgetHost,
+    communalInteractor: CommunalInteractor,
     tutorialInteractor: CommunalTutorialInteractor,
 ) {
     /** Whether communal hub should show tutorial content. */
     val showTutorialContent: Flow<Boolean> = tutorialInteractor.isTutorialAvailable
+
+    /** List of widgets to be displayed in the communal hub. */
+    val widgetContent: Flow<List<CommunalContentUiModel>> =
+        communalInteractor.widgetContent.map {
+            it.map {
+                // TODO(b/306406256): As adding and removing widgets functionalities are
+                // supported, cache the host views so they're not recreated each time.
+                val hostView = appWidgetHost.createView(context, it.appWidgetId, it.providerInfo)
+                return@map CommunalContentUiModel(
+                    view = hostView,
+                    priority = it.priority,
+                    // All widgets have HALF size.
+                    size = CommunalContentSize.HALF,
+                )
+            }
+        }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalWidgetViewModel.kt b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalWidgetViewModel.kt
index 8fba342c49be..d7bbea64332e 100644
--- a/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalWidgetViewModel.kt
+++ b/packages/SystemUI/src/com/android/systemui/communal/ui/viewmodel/CommunalWidgetViewModel.kt
@@ -17,7 +17,7 @@
 package com.android.systemui.communal.ui.viewmodel
 
 import com.android.systemui.communal.domain.interactor.CommunalInteractor
-import com.android.systemui.communal.shared.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalAppWidgetInfo
 import com.android.systemui.dagger.SysUISingleton
 import com.android.systemui.keyguard.ui.viewmodel.KeyguardBottomAreaViewModel
 import javax.inject.Inject
diff --git a/packages/SystemUI/tests/src/com/android/systemui/communal/data/repository/CommunalWidgetRepositoryImplTest.kt b/packages/SystemUI/tests/src/com/android/systemui/communal/data/repository/CommunalWidgetRepositoryImplTest.kt
index 91409a376556..fcb191b4cbd6 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/communal/data/repository/CommunalWidgetRepositoryImplTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/communal/data/repository/CommunalWidgetRepositoryImplTest.kt
@@ -12,9 +12,10 @@ import androidx.test.filters.SmallTest
 import com.android.systemui.SysuiTestCase
 import com.android.systemui.broadcast.BroadcastDispatcher
 import com.android.systemui.communal.data.model.CommunalWidgetMetadata
-import com.android.systemui.communal.shared.CommunalContentSize
+import com.android.systemui.communal.shared.model.CommunalContentSize
+import com.android.systemui.communal.shared.model.CommunalWidgetContentModel
 import com.android.systemui.coroutines.collectLastValue
-import com.android.systemui.flags.FeatureFlags
+import com.android.systemui.flags.FeatureFlagsClassic
 import com.android.systemui.flags.Flags
 import com.android.systemui.log.LogBuffer
 import com.android.systemui.log.core.FakeLogBuffer
@@ -38,6 +39,7 @@ import org.junit.runner.RunWith
 import org.mockito.Mock
 import org.mockito.Mockito
 import org.mockito.Mockito.anyInt
+import org.mockito.Mockito.verify
 import org.mockito.MockitoAnnotations
 
 @OptIn(ExperimentalCoroutinesApi::class)
@@ -58,10 +60,16 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
 
     @Mock private lateinit var userTracker: UserTracker
 
-    @Mock private lateinit var featureFlags: FeatureFlags
+    @Mock private lateinit var featureFlags: FeatureFlagsClassic
 
     @Mock private lateinit var stopwatchProviderInfo: AppWidgetProviderInfo
 
+    @Mock private lateinit var providerInfoA: AppWidgetProviderInfo
+
+    @Mock private lateinit var providerInfoB: AppWidgetProviderInfo
+
+    @Mock private lateinit var providerInfoC: AppWidgetProviderInfo
+
     private lateinit var communalRepository: FakeCommunalRepository
 
     private lateinit var logBuffer: LogBuffer
@@ -70,29 +78,34 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
 
     private val testScope = TestScope(testDispatcher)
 
+    private val fakeAllowlist =
+        listOf(
+            "com.android.fake/WidgetProviderA",
+            "com.android.fake/WidgetProviderB",
+            "com.android.fake/WidgetProviderC",
+        )
+
     @Before
     fun setUp() {
         MockitoAnnotations.initMocks(this)
 
         logBuffer = FakeLogBuffer.Factory.create()
-
-        featureFlagEnabled(true)
         communalRepository = FakeCommunalRepository()
-        communalRepository.setIsCommunalEnabled(true)
 
-        overrideResource(
-            R.array.config_communalWidgetAllowlist,
-            arrayOf(componentName1, componentName2)
-        )
+        communalEnabled(true)
+        widgetOnKeyguardEnabled(true)
+        setAppWidgetIds(emptyList())
+
+        overrideResource(R.array.config_communalWidgetAllowlist, fakeAllowlist.toTypedArray())
 
         whenever(stopwatchProviderInfo.loadLabel(any())).thenReturn("Stopwatch")
         whenever(userTracker.userHandle).thenReturn(userHandle)
     }
 
     @Test
-    fun broadcastReceiver_featureDisabled_doNotRegisterUserUnlockedBroadcastReceiver() =
+    fun broadcastReceiver_communalDisabled_doNotRegisterUserUnlockedBroadcastReceiver() =
         testScope.runTest {
-            featureFlagEnabled(false)
+            communalEnabled(false)
             val repository = initCommunalWidgetRepository()
             collectLastValue(repository.stopwatchAppWidgetInfo)()
             verifyBroadcastReceiverNeverRegistered()
@@ -129,7 +142,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
             job.cancel()
             runCurrent()
 
-            Mockito.verify(broadcastDispatcher).unregisterReceiver(receiver)
+            verify(broadcastDispatcher).unregisterReceiver(receiver)
         }
 
     @Test
@@ -166,7 +179,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
             installedProviders(listOf(stopwatchProviderInfo))
             val repository = initCommunalWidgetRepository()
             collectLastValue(repository.stopwatchAppWidgetInfo)()
-            Mockito.verify(appWidgetHost).allocateAppWidgetId()
+            verify(appWidgetHost).allocateAppWidgetId()
         }
 
     @Test
@@ -185,8 +198,8 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
 
             // Verify app widget id allocated
             assertThat(lastStopwatchProviderInfo()?.appWidgetId).isEqualTo(123456)
-            Mockito.verify(appWidgetHost).allocateAppWidgetId()
-            Mockito.verify(appWidgetHost, Mockito.never()).deleteAppWidgetId(anyInt())
+            verify(appWidgetHost).allocateAppWidgetId()
+            verify(appWidgetHost, Mockito.never()).deleteAppWidgetId(anyInt())
 
             // User locked again
             userUnlocked(false)
@@ -194,7 +207,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
 
             // Verify app widget id deleted
             assertThat(lastStopwatchProviderInfo()).isNull()
-            Mockito.verify(appWidgetHost).deleteAppWidgetId(123456)
+            verify(appWidgetHost).deleteAppWidgetId(123456)
         }
 
     @Test
@@ -203,13 +216,13 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
             userUnlocked(false)
             val repository = initCommunalWidgetRepository()
             collectLastValue(repository.stopwatchAppWidgetInfo)()
-            Mockito.verify(appWidgetHost, Mockito.never()).startListening()
+            verify(appWidgetHost, Mockito.never()).startListening()
 
             userUnlocked(true)
             broadcastReceiverUpdate()
             collectLastValue(repository.stopwatchAppWidgetInfo)()
 
-            Mockito.verify(appWidgetHost).startListening()
+            verify(appWidgetHost).startListening()
         }
 
     @Test
@@ -223,14 +236,14 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
             broadcastReceiverUpdate()
             collectLastValue(repository.stopwatchAppWidgetInfo)()
 
-            Mockito.verify(appWidgetHost).startListening()
-            Mockito.verify(appWidgetHost, Mockito.never()).stopListening()
+            verify(appWidgetHost).startListening()
+            verify(appWidgetHost, Mockito.never()).stopListening()
 
             userUnlocked(false)
             broadcastReceiverUpdate()
             collectLastValue(repository.stopwatchAppWidgetInfo)()
 
-            Mockito.verify(appWidgetHost).stopListening()
+            verify(appWidgetHost).stopListening()
         }
 
     @Test
@@ -241,21 +254,80 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
             assertThat(
                     listOf(
                         CommunalWidgetMetadata(
-                            componentName = componentName1,
+                            componentName = fakeAllowlist[0],
+                            priority = 3,
+                            sizes = listOf(CommunalContentSize.HALF),
+                        ),
+                        CommunalWidgetMetadata(
+                            componentName = fakeAllowlist[1],
                             priority = 2,
-                            sizes = listOf(CommunalContentSize.HALF)
+                            sizes = listOf(CommunalContentSize.HALF),
                         ),
                         CommunalWidgetMetadata(
-                            componentName = componentName2,
+                            componentName = fakeAllowlist[2],
                             priority = 1,
-                            sizes = listOf(CommunalContentSize.HALF)
-                        )
+                            sizes = listOf(CommunalContentSize.HALF),
+                        ),
                     )
                 )
                 .containsExactly(*communalWidgetAllowlist.toTypedArray())
         }
     }
 
+    // This behavior is temporary before the local database is set up.
+    @Test
+    fun communalWidgets_withPreviouslyBoundWidgets_removeEachBinding() =
+        testScope.runTest {
+            whenever(appWidgetHost.allocateAppWidgetId()).thenReturn(1, 2, 3)
+            setAppWidgetIds(listOf(1, 2, 3))
+            whenever(appWidgetManager.getAppWidgetInfo(anyInt())).thenReturn(providerInfoA)
+            userUnlocked(true)
+
+            val repository = initCommunalWidgetRepository()
+
+            collectLastValue(repository.communalWidgets)()
+
+            verify(appWidgetHost).deleteAppWidgetId(1)
+            verify(appWidgetHost).deleteAppWidgetId(2)
+            verify(appWidgetHost).deleteAppWidgetId(3)
+        }
+
+    @Test
+    fun communalWidgets_allowlistNotEmpty_bindEachWidgetFromTheAllowlist() =
+        testScope.runTest {
+            whenever(appWidgetHost.allocateAppWidgetId()).thenReturn(0, 1, 2)
+            userUnlocked(true)
+
+            whenever(appWidgetManager.getAppWidgetInfo(0)).thenReturn(providerInfoA)
+            whenever(appWidgetManager.getAppWidgetInfo(1)).thenReturn(providerInfoB)
+            whenever(appWidgetManager.getAppWidgetInfo(2)).thenReturn(providerInfoC)
+
+            val repository = initCommunalWidgetRepository()
+
+            val inventory by collectLastValue(repository.communalWidgets)
+
+            assertThat(
+                    listOf(
+                        CommunalWidgetContentModel(
+                            appWidgetId = 0,
+                            providerInfo = providerInfoA,
+                            priority = 3,
+                        ),
+                        CommunalWidgetContentModel(
+                            appWidgetId = 1,
+                            providerInfo = providerInfoB,
+                            priority = 2,
+                        ),
+                        CommunalWidgetContentModel(
+                            appWidgetId = 2,
+                            providerInfo = providerInfoC,
+                            priority = 1,
+                        ),
+                    )
+                )
+                .containsExactly(*inventory!!.toTypedArray())
+        }
+
     private fun initCommunalWidgetRepository(): CommunalWidgetRepositoryImpl {
         return CommunalWidgetRepositoryImpl(
             context,
@@ -272,7 +344,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
     }
 
     private fun verifyBroadcastReceiverRegistered() {
-        Mockito.verify(broadcastDispatcher)
+        verify(broadcastDispatcher)
             .registerReceiver(
                 any(),
                 any(),
@@ -284,7 +356,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
     }
 
     private fun verifyBroadcastReceiverNeverRegistered() {
-        Mockito.verify(broadcastDispatcher, Mockito.never())
+        verify(broadcastDispatcher, Mockito.never())
             .registerReceiver(
                 any(),
                 any(),
@@ -297,7 +369,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
 
     private fun broadcastReceiverUpdate(): BroadcastReceiver {
         val broadcastReceiverCaptor = kotlinArgumentCaptor<BroadcastReceiver>()
-        Mockito.verify(broadcastDispatcher)
+        verify(broadcastDispatcher)
             .registerReceiver(
                 broadcastReceiverCaptor.capture(),
                 any(),
@@ -310,7 +382,11 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
         return broadcastReceiverCaptor.value
     }
 
-    private fun featureFlagEnabled(enabled: Boolean) {
+    private fun communalEnabled(enabled: Boolean) {
+        communalRepository.setIsCommunalEnabled(enabled)
+    }
+
+    private fun widgetOnKeyguardEnabled(enabled: Boolean) {
         whenever(featureFlags.isEnabled(Flags.WIDGET_ON_KEYGUARD)).thenReturn(enabled)
     }
 
@@ -322,8 +398,7 @@ class CommunalWidgetRepositoryImplTest : SysuiTestCase() {
         whenever(appWidgetManager.installedProviders).thenReturn(providers)
     }
 
-    companion object {
-        const val componentName1 = "component name 1"
-        const val componentName2 = "component name 2"
+    private fun setAppWidgetIds(ids: List<Int>) {
+        whenever(appWidgetHost.appWidgetIds).thenReturn(ids.toIntArray())
     }
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt b/packages/SystemUI/tests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt
index cdc42e096830..8e21f294a361 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/communal/domain/interactor/CommunalInteractorTest.kt
@@ -22,7 +22,7 @@ import androidx.test.filters.SmallTest
 import com.android.systemui.SysuiTestCase
 import com.android.systemui.communal.data.repository.FakeCommunalRepository
 import com.android.systemui.communal.data.repository.FakeCommunalWidgetRepository
-import com.android.systemui.communal.shared.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalAppWidgetInfo
 import com.android.systemui.coroutines.collectLastValue
 import com.google.common.truth.Truth.assertThat
 import kotlinx.coroutines.ExperimentalCoroutinesApi
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/communal/data/repository/FakeCommunalWidgetRepository.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/communal/data/repository/FakeCommunalWidgetRepository.kt
index 30132f7747b7..08adda32eb6d 100644
--- a/packages/SystemUI/tests/utils/src/com/android/systemui/communal/data/repository/FakeCommunalWidgetRepository.kt
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/communal/data/repository/FakeCommunalWidgetRepository.kt
@@ -1,7 +1,8 @@
 package com.android.systemui.communal.data.repository
 
 import com.android.systemui.communal.data.model.CommunalWidgetMetadata
-import com.android.systemui.communal.shared.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalAppWidgetInfo
+import com.android.systemui.communal.shared.model.CommunalWidgetContentModel
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 
@@ -11,7 +12,14 @@ class FakeCommunalWidgetRepository : CommunalWidgetRepository {
     override val stopwatchAppWidgetInfo: Flow<CommunalAppWidgetInfo?> = _stopwatchAppWidgetInfo
     override var communalWidgetAllowlist: List<CommunalWidgetMetadata> = emptyList()
 
+    private val _communalWidgets = MutableStateFlow<List<CommunalWidgetContentModel>>(emptyList())
+    override val communalWidgets: Flow<List<CommunalWidgetContentModel>> = _communalWidgets
+
     fun setStopwatchAppWidgetInfo(appWidgetInfo: CommunalAppWidgetInfo) {
         _stopwatchAppWidgetInfo.value = appWidgetInfo
     }
+
+    fun setCommunalWidgets(inventory: List<CommunalWidgetContentModel>) {
+        _communalWidgets.value = inventory
+    }
 }