Migrate DataSaverTile

Fixes: 301056034
Flag: LEGACY QS_PIPELINE_NEW_TILES DISABLED
Test: atest SystemUiRoboTests
Test: atest DataSaverTileDataInteractor DataSaverTileUserActionInteractor DataSaverTileMapper
Change-Id: Ic8b51335e8508aecb04455b71c3dfc49ff103a9e

packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/saver/domain/DataSaverDialogDelegateTest.kt

+/*
+ * 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.qs.tiles.impl.saver.domain
+
+import android.content.SharedPreferences
+import android.testing.LeakCheck
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.internal.R
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.statusbar.phone.SystemUIDialog
+import com.android.systemui.util.mockito.any
+import com.android.systemui.util.mockito.eq
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+import com.android.systemui.utils.leaks.FakeDataSaverController
+import kotlin.coroutines.EmptyCoroutineContext
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.verify
+
+/** Test [DataSaverDialogDelegate]. */
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class DataSaverDialogDelegateTest : SysuiTestCase() {
+
+    private val dataSaverController = FakeDataSaverController(LeakCheck())
+
+    private lateinit var sysuiDialogFactory: SystemUIDialog.Factory
+    private lateinit var sysuiDialog: SystemUIDialog
+    private lateinit var dataSaverDialogDelegate: DataSaverDialogDelegate
+
+    @Before
+    fun setup() {
+        sysuiDialog = mock<SystemUIDialog>()
+        sysuiDialogFactory = mock<SystemUIDialog.Factory>()
+
+        dataSaverDialogDelegate =
+            DataSaverDialogDelegate(
+                sysuiDialogFactory,
+                context,
+                EmptyCoroutineContext,
+                dataSaverController,
+                mock<SharedPreferences>()
+            )
+
+        whenever(sysuiDialogFactory.create(eq(dataSaverDialogDelegate), eq(context)))
+            .thenReturn(sysuiDialog)
+    }
+    @Test
+    fun delegateSetsDialogTitleCorrectly() {
+        val expectedResId = R.string.data_saver_enable_title
+
+        dataSaverDialogDelegate.onCreate(sysuiDialog, null)
+
+        verify(sysuiDialog).setTitle(eq(expectedResId))
+    }
+
+    @Test
+    fun delegateSetsDialogMessageCorrectly() {
+        val expectedResId = R.string.data_saver_description
+
+        dataSaverDialogDelegate.onCreate(sysuiDialog, null)
+
+        verify(sysuiDialog).setMessage(expectedResId)
+    }
+
+    @Test
+    fun delegateSetsDialogPositiveButtonCorrectly() {
+        val expectedResId = R.string.data_saver_enable_button
+
+        dataSaverDialogDelegate.onCreate(sysuiDialog, null)
+
+        verify(sysuiDialog).setPositiveButton(eq(expectedResId), any())
+    }
+
+    @Test
+    fun delegateSetsDialogCancelButtonCorrectly() {
+        val expectedResId = R.string.cancel
+
+        dataSaverDialogDelegate.onCreate(sysuiDialog, null)
+
+        verify(sysuiDialog).setNeutralButton(eq(expectedResId), eq(null))
+    }
+}

packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/saver/domain/DataSaverTileMapperTest.kt

+/*
+ * 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.qs.tiles.impl.saver.domain
+
+import android.widget.Switch
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.common.shared.model.Icon
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.qs.tiles.impl.custom.QSTileStateSubject
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
+import com.android.systemui.qs.tiles.impl.saver.qsDataSaverTileConfig
+import com.android.systemui.qs.tiles.viewmodel.QSTileState
+import com.android.systemui.res.R
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class DataSaverTileMapperTest : SysuiTestCase() {
+    private val kosmos = Kosmos()
+    private val dataSaverTileConfig = kosmos.qsDataSaverTileConfig
+
+    // Using lazy (versus =) to make sure we override the right context -- see b/311612168
+    private val mapper by lazy { DataSaverTileMapper(context.orCreateTestableResources.resources) }
+
+    @Test
+    fun activeStateMatchesEnabledModel() {
+        val inputModel = DataSaverTileModel(true)
+
+        val outputState = mapper.map(dataSaverTileConfig, inputModel)
+
+        val expectedState =
+            createDataSaverTileState(
+                QSTileState.ActivationState.ACTIVE,
+                R.drawable.qs_data_saver_icon_on
+            )
+        QSTileStateSubject.assertThat(outputState).isEqualTo(expectedState)
+    }
+
+    @Test
+    fun inactiveStateMatchesDisabledModel() {
+        val inputModel = DataSaverTileModel(false)
+
+        val outputState = mapper.map(dataSaverTileConfig, inputModel)
+
+        val expectedState =
+            createDataSaverTileState(
+                QSTileState.ActivationState.INACTIVE,
+                R.drawable.qs_data_saver_icon_off
+            )
+        QSTileStateSubject.assertThat(outputState).isEqualTo(expectedState)
+    }
+
+    private fun createDataSaverTileState(
+        activationState: QSTileState.ActivationState,
+        iconRes: Int
+    ): QSTileState {
+        val label = context.getString(R.string.data_saver)
+        val secondaryLabel =
+            if (activationState == QSTileState.ActivationState.ACTIVE)
+                context.resources.getStringArray(R.array.tile_states_saver)[2]
+            else if (activationState == QSTileState.ActivationState.INACTIVE)
+                context.resources.getStringArray(R.array.tile_states_saver)[1]
+            else context.resources.getStringArray(R.array.tile_states_saver)[0]
+
+        return QSTileState(
+            { Icon.Resource(iconRes, null) },
+            label,
+            activationState,
+            secondaryLabel,
+            setOf(QSTileState.UserAction.CLICK, QSTileState.UserAction.LONG_CLICK),
+            label,
+            null,
+            QSTileState.SideViewIcon.None,
+            QSTileState.EnabledState.ENABLED,
+            Switch::class.qualifiedName
+        )
+    }
+}

packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/saver/domain/interactor/DataSaverTileDataInteractorTest.kt

+/*
+ * 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.qs.tiles.impl.saver.domain.interactor
+
+import android.os.UserHandle
+import android.testing.LeakCheck
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.collectLastValue
+import com.android.systemui.coroutines.collectValues
+import com.android.systemui.qs.tiles.base.interactor.DataUpdateTrigger
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
+import com.android.systemui.utils.leaks.FakeDataSaverController
+import com.google.common.truth.Truth
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.test.runCurrent
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@OptIn(ExperimentalCoroutinesApi::class)
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class DataSaverTileDataInteractorTest : SysuiTestCase() {
+    private val controller: FakeDataSaverController = FakeDataSaverController(LeakCheck())
+    private val underTest: DataSaverTileDataInteractor = DataSaverTileDataInteractor(controller)
+
+    @Test
+    fun isAvailableRegardlessOfController() = runTest {
+        controller.setDataSaverEnabled(false)
+
+        runCurrent()
+        val availability by collectLastValue(underTest.availability(TEST_USER))
+
+        Truth.assertThat(availability).isTrue()
+    }
+
+    @Test
+    fun dataMatchesController() = runTest {
+        controller.setDataSaverEnabled(false)
+        val flowValues: List<DataSaverTileModel> by
+            collectValues(underTest.tileData(TEST_USER, flowOf(DataUpdateTrigger.InitialRequest)))
+
+        runCurrent()
+        controller.setDataSaverEnabled(true)
+        runCurrent()
+        controller.setDataSaverEnabled(false)
+        runCurrent()
+
+        Truth.assertThat(flowValues.size).isEqualTo(3)
+        Truth.assertThat(flowValues.map { it.isEnabled })
+            .containsExactly(false, true, false)
+            .inOrder()
+    }
+
+    private companion object {
+        val TEST_USER = UserHandle.of(1)!!
+    }
+}

packages/SystemUI/multivalentTests/src/com/android/systemui/qs/tiles/impl/saver/domain/interactor/DataSaverTileUserActionInteractorTest.kt

+/*
+ * 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.qs.tiles.impl.saver.domain.interactor
+
+import android.content.Context
+import android.content.SharedPreferences
+import android.provider.Settings
+import android.testing.LeakCheck
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.animation.DialogLaunchAnimator
+import com.android.systemui.qs.tiles.base.actions.FakeQSTileIntentUserInputHandler
+import com.android.systemui.qs.tiles.base.actions.intentInputs
+import com.android.systemui.qs.tiles.base.interactor.QSTileInputTestKtx
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
+import com.android.systemui.settings.UserFileManager
+import com.android.systemui.statusbar.phone.SystemUIDialog
+import com.android.systemui.util.mockito.any
+import com.android.systemui.util.mockito.eq
+import com.android.systemui.util.mockito.mock
+import com.android.systemui.util.mockito.whenever
+import com.android.systemui.utils.leaks.FakeDataSaverController
+import com.google.common.truth.Truth.assertThat
+import kotlin.coroutines.EmptyCoroutineContext
+import kotlinx.coroutines.test.runTest
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.verify
+
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class DataSaverTileUserActionInteractorTest : SysuiTestCase() {
+    private val qsTileIntentUserActionHandler = FakeQSTileIntentUserInputHandler()
+    private val dataSaverController = FakeDataSaverController(LeakCheck())
+
+    private lateinit var userFileManager: UserFileManager
+    private lateinit var sharedPreferences: SharedPreferences
+    private lateinit var dialogFactory: SystemUIDialog.Factory
+    private lateinit var underTest: DataSaverTileUserActionInteractor
+
+    @Before
+    fun setup() {
+        userFileManager = mock<UserFileManager>()
+        sharedPreferences = mock<SharedPreferences>()
+        dialogFactory = mock<SystemUIDialog.Factory>()
+        whenever(
+                userFileManager.getSharedPreferences(
+                    eq(DataSaverTileUserActionInteractor.PREFS),
+                    eq(Context.MODE_PRIVATE),
+                    eq(context.userId)
+                )
+            )
+            .thenReturn(sharedPreferences)
+
+        underTest =
+            DataSaverTileUserActionInteractor(
+                context,
+                EmptyCoroutineContext,
+                EmptyCoroutineContext,
+                dataSaverController,
+                qsTileIntentUserActionHandler,
+                mock<DialogLaunchAnimator>(),
+                dialogFactory,
+                userFileManager,
+            )
+    }
+
+    /** Since the dialog was shown before, we expect the click to enable the controller. */
+    @Test
+    fun handleClickToEnableDialogShownBefore() = runTest {
+        whenever(
+                sharedPreferences.getBoolean(
+                    eq(DataSaverTileUserActionInteractor.DIALOG_SHOWN),
+                    any()
+                )
+            )
+            .thenReturn(true)
+        val stateBeforeClick = false
+
+        underTest.handleInput(QSTileInputTestKtx.click(DataSaverTileModel(stateBeforeClick)))
+
+        assertThat(dataSaverController.isDataSaverEnabled).isEqualTo(!stateBeforeClick)
+    }
+
+    /**
+     * The first time the tile is clicked to turn on we expect (1) the enabled state to not change
+     * and (2) the dialog to be shown instead.
+     */
+    @Test
+    fun handleClickToEnableDialogNotShownBefore() = runTest {
+        whenever(
+                sharedPreferences.getBoolean(
+                    eq(DataSaverTileUserActionInteractor.DIALOG_SHOWN),
+                    any()
+                )
+            )
+            .thenReturn(false)
+        val mockDialog = mock<SystemUIDialog>()
+        whenever(dialogFactory.create(any(), any())).thenReturn(mockDialog)
+        val stateBeforeClick = false
+
+        val input = QSTileInputTestKtx.click(DataSaverTileModel(stateBeforeClick))
+        underTest.handleInput(input)
+
+        assertThat(dataSaverController.isDataSaverEnabled).isEqualTo(stateBeforeClick)
+        verify(mockDialog).show()
+    }
+
+    /** Disabling should flip the state, even if the dialog was not shown before. */
+    @Test
+    fun handleClickToDisableDialogNotShownBefore() = runTest {
+        whenever(
+                sharedPreferences.getBoolean(
+                    eq(DataSaverTileUserActionInteractor.DIALOG_SHOWN),
+                    any()
+                )
+            )
+            .thenReturn(false)
+        val enabledBeforeClick = true
+
+        underTest.handleInput(QSTileInputTestKtx.click(DataSaverTileModel(enabledBeforeClick)))
+
+        assertThat(dataSaverController.isDataSaverEnabled).isEqualTo(!enabledBeforeClick)
+    }
+
+    @Test
+    fun handleClickToDisableDialogShownBefore() = runTest {
+        whenever(
+                sharedPreferences.getBoolean(
+                    eq(DataSaverTileUserActionInteractor.DIALOG_SHOWN),
+                    any()
+                )
+            )
+            .thenReturn(true)
+        val enabledBeforeClick = true
+
+        underTest.handleInput(QSTileInputTestKtx.click(DataSaverTileModel(enabledBeforeClick)))
+
+        assertThat(dataSaverController.isDataSaverEnabled).isEqualTo(!enabledBeforeClick)
+    }
+
+    @Test
+    fun handleLongClickWhenEnabled() = runTest {
+        val enabledState = true
+
+        underTest.handleInput(QSTileInputTestKtx.longClick(DataSaverTileModel(enabledState)))
+
+        assertThat(qsTileIntentUserActionHandler.handledInputs).hasSize(1)
+        val intentInput = qsTileIntentUserActionHandler.intentInputs.last()
+        val actualIntentAction = intentInput.intent.action
+        val expectedIntentAction = Settings.ACTION_DATA_SAVER_SETTINGS
+        assertThat(actualIntentAction).isEqualTo(expectedIntentAction)
+    }
+
+    @Test
+    fun handleLongClickWhenDisabled() = runTest {
+        val enabledState = false
+
+        underTest.handleInput(QSTileInputTestKtx.longClick(DataSaverTileModel(enabledState)))
+
+        assertThat(qsTileIntentUserActionHandler.handledInputs).hasSize(1)
+        val intentInput = qsTileIntentUserActionHandler.intentInputs.last()
+        val actualIntentAction = intentInput.intent.action
+        val expectedIntentAction = Settings.ACTION_DATA_SAVER_SETTINGS
+        assertThat(actualIntentAction).isEqualTo(expectedIntentAction)
+    }
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/impl/saver/domain/DataSaverDialogDelegate.kt

+/*
+ * 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.qs.tiles.impl.saver.domain
+
+import android.content.Context
+import android.content.DialogInterface
+import android.content.SharedPreferences
+import android.os.Bundle
+import com.android.internal.R
+import com.android.systemui.qs.tiles.impl.saver.domain.interactor.DataSaverTileUserActionInteractor
+import com.android.systemui.statusbar.phone.SystemUIDialog
+import com.android.systemui.statusbar.policy.DataSaverController
+import kotlin.coroutines.CoroutineContext
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+
+class DataSaverDialogDelegate(
+    private val sysuiDialogFactory: SystemUIDialog.Factory,
+    private val context: Context,
+    private val backgroundContext: CoroutineContext,
+    private val dataSaverController: DataSaverController,
+    private val sharedPreferences: SharedPreferences,
+) : SystemUIDialog.Delegate {
+    override fun createDialog(): SystemUIDialog {
+        return sysuiDialogFactory.create(this, context)
+    }
+
+    override fun onCreate(dialog: SystemUIDialog, savedInstanceState: Bundle?) {
+        with(dialog) {
+            setTitle(R.string.data_saver_enable_title)
+            setMessage(R.string.data_saver_description)
+            setPositiveButton(R.string.data_saver_enable_button) { _: DialogInterface?, _ ->
+                CoroutineScope(backgroundContext).launch {
+                    dataSaverController.setDataSaverEnabled(true)
+                }
+
+                sharedPreferences
+                    .edit()
+                    .putBoolean(DataSaverTileUserActionInteractor.DIALOG_SHOWN, true)
+                    .apply()
+            }
+            setNeutralButton(R.string.cancel, null)
+            setShowForAllUsers(true)
+        }
+    }
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/impl/saver/domain/DataSaverTileMapper.kt

+/*
+ * 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.qs.tiles.impl.saver.domain
+
+import android.content.res.Resources
+import com.android.systemui.common.shared.model.Icon
+import com.android.systemui.dagger.qualifiers.Main
+import com.android.systemui.qs.tiles.base.interactor.QSTileDataToStateMapper
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
+import com.android.systemui.qs.tiles.viewmodel.QSTileConfig
+import com.android.systemui.qs.tiles.viewmodel.QSTileState
+import com.android.systemui.res.R
+import javax.inject.Inject
+
+/** Maps [DataSaverTileModel] to [QSTileState]. */
+class DataSaverTileMapper @Inject constructor(@Main private val resources: Resources) :
+    QSTileDataToStateMapper<DataSaverTileModel> {
+    override fun map(config: QSTileConfig, data: DataSaverTileModel): QSTileState =
+        QSTileState.build(resources, config.uiConfig) {
+            with(data) {
+                if (isEnabled) {
+                    activationState = QSTileState.ActivationState.ACTIVE
+                    icon = { Icon.Resource(R.drawable.qs_data_saver_icon_on, null) }
+                    secondaryLabel = resources.getStringArray(R.array.tile_states_saver)[2]
+                } else {
+                    activationState = QSTileState.ActivationState.INACTIVE
+                    icon = { Icon.Resource(R.drawable.qs_data_saver_icon_off, null) }
+                    secondaryLabel = resources.getStringArray(R.array.tile_states_saver)[1]
+                }
+                contentDescription = label
+                supportedActions =
+                    setOf(QSTileState.UserAction.CLICK, QSTileState.UserAction.LONG_CLICK)
+            }
+        }
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/impl/saver/domain/interactor/DataSaverTileDataInteractor.kt

+/*
+ * 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.qs.tiles.impl.saver.domain.interactor
+
+import android.os.UserHandle
+import com.android.systemui.common.coroutine.ConflatedCallbackFlow
+import com.android.systemui.qs.tiles.base.interactor.DataUpdateTrigger
+import com.android.systemui.qs.tiles.base.interactor.QSTileDataInteractor
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
+import com.android.systemui.statusbar.policy.DataSaverController
+import javax.inject.Inject
+import kotlinx.coroutines.channels.awaitClose
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flowOf
+
+/** Observes data saver state changes providing the [DataSaverTileModel]. */
+class DataSaverTileDataInteractor
+@Inject
+constructor(
+    private val dataSaverController: DataSaverController,
+) : QSTileDataInteractor<DataSaverTileModel> {
+
+    override fun tileData(
+        user: UserHandle,
+        triggers: Flow<DataUpdateTrigger>
+    ): Flow<DataSaverTileModel> =
+        ConflatedCallbackFlow.conflatedCallbackFlow {
+            val initialValue = dataSaverController.isDataSaverEnabled
+            trySend(DataSaverTileModel(initialValue))
+
+            val callback = DataSaverController.Listener { trySend(DataSaverTileModel(it)) }
+
+            dataSaverController.addCallback(callback)
+            awaitClose { dataSaverController.removeCallback(callback) }
+        }
+
+    override fun availability(user: UserHandle): Flow<Boolean> = flowOf(true)
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/impl/saver/domain/interactor/DataSaverTileUserActionInteractor.kt

+/*
+ * 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.qs.tiles.impl.saver.domain.interactor
+
+import android.content.Context
+import android.content.Intent
+import android.provider.Settings
+import com.android.internal.jank.InteractionJankMonitor
+import com.android.systemui.animation.DialogCuj
+import com.android.systemui.animation.DialogLaunchAnimator
+import com.android.systemui.dagger.qualifiers.Application
+import com.android.systemui.dagger.qualifiers.Background
+import com.android.systemui.dagger.qualifiers.Main
+import com.android.systemui.qs.tiles.base.actions.QSTileIntentUserInputHandler
+import com.android.systemui.qs.tiles.base.interactor.QSTileInput
+import com.android.systemui.qs.tiles.base.interactor.QSTileUserActionInteractor
+import com.android.systemui.qs.tiles.impl.saver.domain.DataSaverDialogDelegate
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
+import com.android.systemui.qs.tiles.viewmodel.QSTileUserAction
+import com.android.systemui.settings.UserFileManager
+import com.android.systemui.statusbar.phone.SystemUIDialog
+import com.android.systemui.statusbar.policy.DataSaverController
+import javax.inject.Inject
+import kotlin.coroutines.CoroutineContext
+import kotlinx.coroutines.withContext
+
+/** Handles data saver tile clicks. */
+class DataSaverTileUserActionInteractor
+@Inject
+constructor(
+    @Application private val context: Context,
+    @Main private val coroutineContext: CoroutineContext,
+    @Background private val backgroundContext: CoroutineContext,
+    private val dataSaverController: DataSaverController,
+    private val qsTileIntentUserActionHandler: QSTileIntentUserInputHandler,
+    private val dialogLaunchAnimator: DialogLaunchAnimator,
+    private val systemUIDialogFactory: SystemUIDialog.Factory,
+    userFileManager: UserFileManager,
+) : QSTileUserActionInteractor<DataSaverTileModel> {
+    companion object {
+        private const val INTERACTION_JANK_TAG = "start_data_saver"
+        const val PREFS = "data_saver"
+        const val DIALOG_SHOWN = "data_saver_dialog_shown"
+    }
+
+    val sharedPreferences =
+        userFileManager.getSharedPreferences(PREFS, Context.MODE_PRIVATE, context.userId)
+
+    override suspend fun handleInput(input: QSTileInput<DataSaverTileModel>): Unit =
+        with(input) {
+            when (action) {
+                is QSTileUserAction.Click -> {
+                    val wasEnabled: Boolean = data.isEnabled
+                    if (wasEnabled || sharedPreferences.getBoolean(DIALOG_SHOWN, false)) {
+                        withContext(backgroundContext) {
+                            dataSaverController.setDataSaverEnabled(!wasEnabled)
+                        }
+                        return@with
+                    }
+                    // Show a dialog to confirm first. Dialogs shown by the DialogLaunchAnimator
+                    // must be created and shown on the main thread, so we post it to the UI
+                    // handler
+                    withContext(coroutineContext) {
+                        val dialogContext = action.view?.context ?: context
+                        val dialogDelegate =
+                            DataSaverDialogDelegate(
+                                systemUIDialogFactory,
+                                dialogContext,
+                                backgroundContext,
+                                dataSaverController,
+                                sharedPreferences
+                            )
+                        val dialog = systemUIDialogFactory.create(dialogDelegate, dialogContext)
+
+                        if (action.view != null) {
+                            dialogLaunchAnimator.showFromView(
+                                dialog,
+                                action.view!!,
+                                DialogCuj(
+                                    InteractionJankMonitor.CUJ_SHADE_DIALOG_OPEN,
+                                    INTERACTION_JANK_TAG
+                                )
+                            )
+                        } else {
+                            dialog.show()
+                        }
+                    }
+                }
+                is QSTileUserAction.LongClick -> {
+                    qsTileIntentUserActionHandler.handle(
+                        action.view,
+                        Intent(Settings.ACTION_DATA_SAVER_SETTINGS)
+                    )
+                }
+            }
+        }
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/impl/saver/domain/model/DataSaverTileModel.kt

+/*
+ * 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.qs.tiles.impl.saver.domain.model
+
+/**
+ * data saver tile model.
+ *
+ * @param isEnabled is true when the data saver is enabled;
+ */
+@JvmInline value class DataSaverTileModel(val isEnabled: Boolean)

packages/SystemUI/src/com/android/systemui/statusbar/connectivity/ConnectivityModule.kt

@@ -35,6 +35,10 @@ import com.android.systemui.qs.tiles.impl.airplane.domain.AirplaneModeMapper
 import com.android.systemui.qs.tiles.impl.airplane.domain.interactor.AirplaneModeTileDataInteractor
 import com.android.systemui.qs.tiles.impl.airplane.domain.interactor.AirplaneModeTileUserActionInteractor
 import com.android.systemui.qs.tiles.impl.airplane.domain.model.AirplaneModeTileModel
+import com.android.systemui.qs.tiles.impl.saver.domain.DataSaverTileMapper
+import com.android.systemui.qs.tiles.impl.saver.domain.interactor.DataSaverTileDataInteractor
+import com.android.systemui.qs.tiles.impl.saver.domain.interactor.DataSaverTileUserActionInteractor
+import com.android.systemui.qs.tiles.impl.saver.domain.model.DataSaverTileModel
 import com.android.systemui.qs.tiles.viewmodel.QSTileConfig
 import com.android.systemui.qs.tiles.viewmodel.QSTilePolicy
 import com.android.systemui.qs.tiles.viewmodel.QSTileUIConfig
@@ -85,6 +89,7 @@ interface ConnectivityModule {
     companion object {
 
         const val AIRPLANE_MODE_TILE_SPEC = "airplane"
+        const val DATA_SAVER_TILE_SPEC = "saver"
 
         /** Inject InternetTile or InternetTileNewImpl into tileMap in QSModule */
         @Provides
@@ -132,5 +137,36 @@ interface ConnectivityModule {
                 stateInteractor,
                 mapper,
             )
+
+        @Provides
+        @IntoMap
+        @StringKey(DATA_SAVER_TILE_SPEC)
+        fun provideDataSaverTileConfig(uiEventLogger: QsEventLogger): QSTileConfig =
+            QSTileConfig(
+                tileSpec = TileSpec.create(DATA_SAVER_TILE_SPEC),
+                uiConfig =
+                    QSTileUIConfig.Resource(
+                        iconRes = R.drawable.qs_data_saver_icon_off,
+                        labelRes = R.string.data_saver,
+                    ),
+                instanceId = uiEventLogger.getNewInstanceId(),
+            )
+
+        /** Inject DataSaverTile into tileViewModelMap in QSModule */
+        @Provides
+        @IntoMap
+        @StringKey(DATA_SAVER_TILE_SPEC)
+        fun provideDataSaverTileViewModel(
+            factory: QSTileViewModelFactory.Static<DataSaverTileModel>,
+            mapper: DataSaverTileMapper,
+            stateInteractor: DataSaverTileDataInteractor,
+            userActionInteractor: DataSaverTileUserActionInteractor
+        ): QSTileViewModel =
+            factory.create(
+                TileSpec.create(DATA_SAVER_TILE_SPEC),
+                userActionInteractor,
+                stateInteractor,
+                mapper,
+            )
     }
 }

packages/SystemUI/tests/utils/src/com/android/systemui/qs/tiles/impl/saver/DataSaverTileKosmos.kt

+/*
+ * 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.qs.tiles.impl.saver
+
+import com.android.systemui.kosmos.Kosmos
+import com.android.systemui.qs.qsEventLogger
+import com.android.systemui.statusbar.connectivity.ConnectivityModule
+
+val Kosmos.qsDataSaverTileConfig by
+    Kosmos.Fixture { ConnectivityModule.provideDataSaverTileConfig(qsEventLogger) }

packages/SystemUI/tests/utils/src/com/android/systemui/utils/leaks/FakeDataSaverController.java

@@ -19,19 +19,38 @@ import android.testing.LeakCheck;
 import com.android.systemui.statusbar.policy.DataSaverController;
 import com.android.systemui.statusbar.policy.DataSaverController.Listener;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class FakeDataSaverController extends BaseLeakChecker<Listener> implements DataSaverController {
 
+    private boolean mIsEnabled = false;
+    private List<Listener> mListeners = new ArrayList<>();
+
     public FakeDataSaverController(LeakCheck test) {
         super(test, "datasaver");
     }
 
     @Override
     public boolean isDataSaverEnabled() {
-        return false;
+        return mIsEnabled;
     }
 
     @Override
     public void setDataSaverEnabled(boolean enabled) {
+        mIsEnabled = enabled;
+        for (Listener listener: mListeners) {
+            listener.onDataSaverChanged(enabled);
+        }
+    }
 
+    @Override
+    public void addCallback(Listener listener) {
+        mListeners.add(listener);
+    }
+
+    @Override
+    public void removeCallback(Listener listener) {
+        mListeners.remove(listener);
     }
 }