Create data store for supervision safe sites preference.

Test: atest SupervisionWebContentFiltersScreenTest
Test: atest SupervisionSafeSitesPreferenceTest
Test: deployed locally to a physical device
Flag: android.app.supervision.flags.enable_web_content_filters_screen
Bug: 401568468
Change-Id: I7fe8a9c5932b4c8f63c4067ba6914eb73d0e2373

src/com/android/settings/supervision/SupervisionSafeSitesDataStore.kt

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2025 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.settings.supervision
+
+import android.content.Context
+import android.provider.Settings.Secure.BROWSER_CONTENT_FILTERS_ENABLED
+import com.android.settingslib.datastore.AbstractKeyedDataObservable
+import com.android.settingslib.datastore.HandlerExecutor
+import com.android.settingslib.datastore.KeyValueStore
+import com.android.settingslib.datastore.KeyedObserver
+import com.android.settingslib.datastore.SettingsSecureStore
+import com.android.settingslib.datastore.SettingsStore
+
+/** Datastore of the safe sites preference. */
+@Suppress("UNCHECKED_CAST")
+class SupervisionSafeSitesDataStore(
+    private val context: Context,
+    private val settingsStore: SettingsStore = SettingsSecureStore.get(context),
+) : AbstractKeyedDataObservable<String>(), KeyedObserver<String>, KeyValueStore {
+
+    override fun contains(key: String) =
+        key == SupervisionBlockExplicitSitesPreference.KEY ||
+            key == SupervisionAllowAllSitesPreference.KEY
+
+    override fun <T : Any> getValue(key: String, valueType: Class<T>): T? {
+        val settingValue = (settingsStore.getBoolean(BROWSER_CONTENT_FILTERS_ENABLED) == true)
+        return when (key) {
+            SupervisionAllowAllSitesPreference.KEY -> !settingValue
+
+            SupervisionBlockExplicitSitesPreference.KEY -> settingValue
+
+            else -> null
+        }
+            as T?
+    }
+
+    override fun <T : Any> setValue(key: String, valueType: Class<T>, value: T?) {
+        if (value !is Boolean) return
+        when (key) {
+            SupervisionAllowAllSitesPreference.KEY ->
+                settingsStore.setBoolean(BROWSER_CONTENT_FILTERS_ENABLED, !value)
+
+            SupervisionBlockExplicitSitesPreference.KEY ->
+                settingsStore.setBoolean(BROWSER_CONTENT_FILTERS_ENABLED, value)
+        }
+    }
+
+    override fun onFirstObserverAdded() {
+        // observe the underlying storage key
+        settingsStore.addObserver(BROWSER_CONTENT_FILTERS_ENABLED, this, HandlerExecutor.main)
+    }
+
+    override fun onKeyChanged(key: String, reason: Int) {
+        // forward data change to preference hierarchy key
+        notifyChange(SupervisionBlockExplicitSitesPreference.KEY, reason)
+        notifyChange(SupervisionAllowAllSitesPreference.KEY, reason)
+    }
+
+    override fun onLastObserverRemoved() {
+        settingsStore.removeObserver(BROWSER_CONTENT_FILTERS_ENABLED, this)
+    }
+}

src/com/android/settings/supervision/SupervisionSafeSitesPreference.kt

@@ -18,9 +18,7 @@ package com.android.settings.supervision
 import android.content.Context
 import androidx.preference.Preference
 import com.android.settings.R
-import com.android.settingslib.datastore.KeyValueStore
 import com.android.settingslib.datastore.Permissions
-import com.android.settingslib.datastore.SettingsSecureStore
 import com.android.settingslib.metadata.BooleanValuePreference
 import com.android.settingslib.metadata.PreferenceMetadata
 import com.android.settingslib.metadata.ReadWritePermit
@@ -30,9 +28,10 @@ import com.android.settingslib.preference.forEachRecursively
 import com.android.settingslib.widget.SelectorWithWidgetPreference
 
 /** Base class of web content filters Safe sites preferences. */
-sealed class SupervisionSafeSitesPreference :
+sealed class SupervisionSafeSitesPreference(
-    BooleanValuePreference, SelectorWithWidgetPreference.OnClickListener, PreferenceBinding {
+    protected val dataStore: SupervisionSafeSitesDataStore
-    override fun storage(context: Context): KeyValueStore = SettingsSecureStore.get(context)
+) : BooleanValuePreference, SelectorWithWidgetPreference.OnClickListener, PreferenceBinding {
+    override fun storage(context: Context) = dataStore
 
     override fun getReadPermissions(context: Context) = Permissions.EMPTY
 
@@ -64,15 +63,15 @@ sealed class SupervisionSafeSitesPreference :
     override fun bind(preference: Preference, metadata: PreferenceMetadata) {
         super.bind(preference, metadata)
         (preference as SelectorWithWidgetPreference).also {
-            // TODO(b/401568468): Set the isChecked value using stored values.
+            it.isChecked = (dataStore.getBoolean(it.key) == true)
-            it.isChecked = (it.key == SupervisionAllowAllSitesPreference.KEY)
             it.setOnClickListener(this)
         }
     }
 }
 
 /** The "Try to block explicit sites" preference. */
-class SupervisionBlockExplicitSitesPreference : SupervisionSafeSitesPreference() {
+class SupervisionBlockExplicitSitesPreference(dataStore: SupervisionSafeSitesDataStore) :
+    SupervisionSafeSitesPreference(dataStore) {
 
     override val key
         get() = KEY
@@ -89,7 +88,8 @@ class SupervisionBlockExplicitSitesPreference : SupervisionSafeSitesPreference()
 }
 
 /** The "Allow all sites" preference. */
-class SupervisionAllowAllSitesPreference : SupervisionSafeSitesPreference() {
+class SupervisionAllowAllSitesPreference(dataStore: SupervisionSafeSitesDataStore) :
+    SupervisionSafeSitesPreference(dataStore) {
 
     override val key
         get() = KEY

src/com/android/settings/supervision/SupervisionWebContentFiltersScreen.kt

@@ -47,8 +47,9 @@ class SupervisionWebContentFiltersScreen : PreferenceScreenCreator {
                 R.string.supervision_web_content_filters_browser_title,
             ) +=
                 {
-                    +SupervisionBlockExplicitSitesPreference()
+                    val dataStore = SupervisionSafeSitesDataStore(context)
-                    +SupervisionAllowAllSitesPreference()
+                    +SupervisionBlockExplicitSitesPreference(dataStore)
+                    +SupervisionAllowAllSitesPreference(dataStore)
                 }
             // TODO(b/401569571) implement the SafeSearch group.
         }

tests/robotests/src/com/android/settings/supervision/SupervisionSafeSitesPreferenceTest.kt

@@ -16,20 +16,33 @@
 package com.android.settings.supervision
 
 import android.content.Context
+import android.provider.Settings
+import android.provider.Settings.Secure.BROWSER_CONTENT_FILTERS_ENABLED
+import android.provider.Settings.SettingNotFoundException
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import com.android.settings.R
+import com.android.settingslib.preference.createAndBindWidget
+import com.android.settingslib.widget.SelectorWithWidgetPreference
 import com.google.common.truth.Truth.assertThat
+import org.junit.Assert.assertThrows
+import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
 
 @RunWith(AndroidJUnit4::class)
 class SupervisionSafeSitesPreferenceTest {
     private val context: Context = ApplicationProvider.getApplicationContext()
+    private lateinit var dataStore: SupervisionSafeSitesDataStore
+    private lateinit var allowAllSitesPreference: SupervisionAllowAllSitesPreference
+    private lateinit var blockExplicitSitesPreference: SupervisionBlockExplicitSitesPreference
 
-    private val allowAllSitesPreference = SupervisionAllowAllSitesPreference()
+    @Before
-
+    fun setUp() {
-    private val blockExplicitSitesPreference = SupervisionBlockExplicitSitesPreference()
+        dataStore = SupervisionSafeSitesDataStore(context)
+        allowAllSitesPreference = SupervisionAllowAllSitesPreference(dataStore)
+        blockExplicitSitesPreference = SupervisionBlockExplicitSitesPreference(dataStore)
+    }
 
     @Test
     fun getTitle_allowAllSites() {
@@ -50,4 +63,64 @@ class SupervisionSafeSitesPreferenceTest {
                 R.string.supervision_web_content_filters_browser_block_explicit_sites_summary
             )
     }
+
+    @Test
+    fun allowAllSitesIsChecked_whenNoValueIsSet() {
+        assertThrows(SettingNotFoundException::class.java) {
+            Settings.Secure.getInt(context.getContentResolver(), BROWSER_CONTENT_FILTERS_ENABLED)
+        }
+        assertThat(getBlockExplicitSitesWidget().isChecked).isFalse()
+        assertThat(getAllowAllSitesWidget().isChecked).isTrue()
+    }
+
+    @Test
+    fun blockExplicitSitesIsChecked_whenPreviouslyEnabled() {
+        Settings.Secure.putInt(context.getContentResolver(), BROWSER_CONTENT_FILTERS_ENABLED, 1)
+        assertThat(getAllowAllSitesWidget().isChecked).isFalse()
+        assertThat(getBlockExplicitSitesWidget().isChecked).isTrue()
+    }
+
+    @Test
+    fun clickBlockExplicitSites_enablesFilter() {
+        Settings.Secure.putInt(context.getContentResolver(), BROWSER_CONTENT_FILTERS_ENABLED, 0)
+        val blockExplicitSitesWidget = getBlockExplicitSitesWidget()
+        assertThat(blockExplicitSitesWidget.isChecked).isFalse()
+
+        blockExplicitSitesWidget.performClick()
+
+        assertThat(
+            Settings.Secure.getInt(
+                context.getContentResolver(),
+                BROWSER_CONTENT_FILTERS_ENABLED,
+            )
+        )
+            .isEqualTo(1)
+        assertThat(blockExplicitSitesWidget.isChecked).isTrue()
+    }
+
+    @Test
+    fun clickAllowAllSites_disablesFilter() {
+        Settings.Secure.putInt(context.getContentResolver(), BROWSER_CONTENT_FILTERS_ENABLED, 1)
+        val allowAllSitesWidget = getAllowAllSitesWidget()
+        assertThat(allowAllSitesWidget.isChecked).isFalse()
+
+        allowAllSitesWidget.performClick()
+
+        assertThat(
+            Settings.Secure.getInt(
+                context.getContentResolver(),
+                BROWSER_CONTENT_FILTERS_ENABLED,
+            )
+        )
+            .isEqualTo(0)
+        assertThat(allowAllSitesWidget.isChecked).isTrue()
+    }
+
+    private fun getBlockExplicitSitesWidget(): SelectorWithWidgetPreference {
+        return blockExplicitSitesPreference.createAndBindWidget(context)
+    }
+
+    private fun getAllowAllSitesWidget(): SelectorWithWidgetPreference {
+        return allowAllSitesPreference.createAndBindWidget(context)
+    }
 }

tests/robotests/src/com/android/settings/supervision/SupervisionWebContentFiltersScreenTest.kt

@@ -15,18 +15,32 @@
  */
 package com.android.settings.supervision
 
+import android.app.supervision.flags.Flags
 import android.content.Context
+import android.platform.test.annotations.DisableFlags
+import android.platform.test.annotations.EnableFlags
+import android.platform.test.flag.junit.SetFlagsRule
+import androidx.fragment.app.testing.FragmentScenario
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import com.android.settings.R
+import com.android.settingslib.widget.SelectorWithWidgetPreference
 import com.google.common.truth.Truth.assertThat
+import org.junit.Before
+import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
 
 @RunWith(AndroidJUnit4::class)
 class SupervisionWebContentFiltersScreenTest {
+    @get:Rule val setFlagsRule = SetFlagsRule()
     private val context: Context = ApplicationProvider.getApplicationContext()
-    private val supervisionWebContentFiltersScreen = SupervisionWebContentFiltersScreen()
+    private lateinit var supervisionWebContentFiltersScreen: SupervisionWebContentFiltersScreen
+
+    @Before
+    fun setUp() {
+        supervisionWebContentFiltersScreen = SupervisionWebContentFiltersScreen()
+    }
 
     @Test
     fun key() {
@@ -39,4 +53,40 @@ class SupervisionWebContentFiltersScreenTest {
         assertThat(supervisionWebContentFiltersScreen.title)
             .isEqualTo(R.string.supervision_web_content_filters_title)
     }
+
+    @Test
+    @EnableFlags(Flags.FLAG_ENABLE_WEB_CONTENT_FILTERS_SCREEN)
+    fun flagEnabled() {
+        assertThat(supervisionWebContentFiltersScreen.isFlagEnabled(context)).isTrue()
+    }
+
+    @Test
+    @DisableFlags(Flags.FLAG_ENABLE_WEB_CONTENT_FILTERS_SCREEN)
+    fun flagDisabled() {
+        assertThat(supervisionWebContentFiltersScreen.isFlagEnabled(context)).isFalse()
+    }
+
+    @Test
+    @EnableFlags(Flags.FLAG_ENABLE_WEB_CONTENT_FILTERS_SCREEN)
+    fun switchSafeSitesPreferences() {
+        FragmentScenario.launchInContainer(supervisionWebContentFiltersScreen.fragmentClass())
+            .onFragment { fragment ->
+                val allowAllSitesPreference =
+                    fragment.findPreference<SelectorWithWidgetPreference>(
+                        SupervisionAllowAllSitesPreference.KEY
+                    )!!
+                val blockExplicitSitesPreference =
+                    fragment.findPreference<SelectorWithWidgetPreference>(
+                        SupervisionBlockExplicitSitesPreference.KEY
+                    )!!
+
+                assertThat(allowAllSitesPreference.isChecked).isTrue()
+                assertThat(blockExplicitSitesPreference.isChecked).isFalse()
+
+                blockExplicitSitesPreference.performClick()
+
+                assertThat(blockExplicitSitesPreference.isChecked).isTrue()
+                assertThat(allowAllSitesPreference.isChecked).isFalse()
+            }
+    }
 }