Add AppLocalePreference for Spa

Also let SettingsSpaUnitTests depends on the
mockito-target-extended-minus-junit4 to support mock static methods.

Bug: 236346018
Test: Unit test & Manual with Settings App
Change-Id: Ib7a3022b20e30c8292713f52d29785eb78899c70

src/com/android/settings/applications/appinfo/AppLocaleDetails.java

@@ -42,7 +42,6 @@ import com.android.settings.applications.AppInfoBase;
 import com.android.settings.applications.AppLocaleUtil;
 import com.android.settings.widget.EntityHeaderController;
 import com.android.settingslib.applications.AppUtils;
-import com.android.settingslib.applications.ApplicationsState.AppEntry;
 import com.android.settingslib.widget.LayoutPreference;
 
 import java.util.Locale;
@@ -206,10 +205,10 @@ public class AppLocaleDetails extends SettingsPreferenceFragment {
      * TODO (b209962418) Do a performance test to low end device.
      * @return Return the summary to show the current app's language.
      */
-    public static CharSequence getSummary(Context context, AppEntry entry) {
-        final UserHandle userHandle = UserHandle.getUserHandleForUid(entry.info.uid);
+    public static CharSequence getSummary(Context context, ApplicationInfo app) {
+        final UserHandle userHandle = UserHandle.getUserHandleForUid(app.uid);
         final Context contextAsUser = context.createContextAsUser(userHandle, 0);
-        Locale appLocale = getAppDefaultLocale(contextAsUser, entry.info.packageName);
+        Locale appLocale = getAppDefaultLocale(contextAsUser, app.packageName);
         if (appLocale == null) {
             return context.getString(R.string.preference_of_system_locale_summary);
         } else {

src/com/android/settings/applications/appinfo/AppLocalePreferenceController.java

@@ -60,7 +60,7 @@ public class AppLocalePreferenceController extends AppInfoPreferenceControllerBa
 
     @Override
     public CharSequence getSummary() {
-        return AppLocaleDetails.getSummary(mContext, mParent.getAppEntry());
+        return AppLocaleDetails.getSummary(mContext, mParent.getAppEntry().info);
     }
 
     @Override

src/com/android/settings/applications/manageapplications/ManageApplications.java

@@ -1707,7 +1707,7 @@ public class ManageApplications extends InstrumentedFragment
                     holder.setSummary(MediaManagementAppsDetails.getSummary(mContext, entry));
                     break;
                 case LIST_TYPE_APPS_LOCALE:
-                    holder.setSummary(AppLocaleDetails.getSummary(mContext, entry));
+                    holder.setSummary(AppLocaleDetails.getSummary(mContext, entry.info));
                     break;
                 case LIST_TYPE_BATTERY_OPTIMIZATION:
                     holder.setSummary(null);

src/com/android/settings/spa/app/appinfo/AppInfoSettings.kt

@@ -96,7 +96,7 @@ private fun AppInfoSettings(packageInfoPresenter: PackageInfoPresenter) {
         // TODO: data_settings
         AppTimeSpentPreference(app)
         // TODO: battery
-        // TODO: app_language_setting
+        AppLocalePreference(app)
         AppOpenByDefaultPreference(app)
         DefaultAppShortcuts(app)
 

src/com/android/settings/spa/app/appinfo/AppLocalePreference.kt

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2022 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.spa.app.appinfo
+
+import android.content.Context
+import android.content.Intent
+import android.content.pm.ApplicationInfo
+import android.content.pm.PackageManager
+import android.content.pm.PackageManager.ResolveInfoFlags
+import android.net.Uri
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import com.android.settings.R
+import com.android.settings.applications.AppInfoBase
+import com.android.settings.applications.AppLocaleUtil
+import com.android.settings.applications.appinfo.AppLocaleDetails
+import com.android.settings.localepicker.AppLocalePickerActivity
+import com.android.settingslib.spa.framework.compose.collectAsStateWithLifecycle
+import com.android.settingslib.spa.widget.preference.Preference
+import com.android.settingslib.spa.widget.preference.PreferenceModel
+import com.android.settingslib.spaprivileged.model.app.userHandle
+import com.android.settingslib.spaprivileged.model.app.userId
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.withContext
+
+@Composable
+fun AppLocalePreference(app: ApplicationInfo) {
+    val context = LocalContext.current
+    val presenter = remember { AppLocalePresenter(context, app) }
+    if (!presenter.isAvailableFlow.collectAsStateWithLifecycle(initialValue = false).value) return
+
+    Preference(object : PreferenceModel {
+        override val title = stringResource(R.string.app_locale_preference_title)
+        override val summary = presenter.summaryFlow.collectAsStateWithLifecycle(
+            initialValue = stringResource(R.string.summary_placeholder),
+        )
+        override val onClick = presenter::startActivity
+    })
+}
+
+private class AppLocalePresenter(
+    private val context: Context,
+    private val app: ApplicationInfo,
+) {
+    private val packageManager = context.packageManager
+
+    val isAvailableFlow = flow { emit(isAvailable()) }
+
+    private suspend fun isAvailable(): Boolean = withContext(Dispatchers.IO) {
+        val resolveInfos = packageManager.queryIntentActivitiesAsUser(
+            AppLocaleUtil.LAUNCHER_ENTRY_INTENT,
+            ResolveInfoFlags.of(PackageManager.GET_META_DATA.toLong()),
+            app.userId,
+        )
+        AppLocaleUtil.canDisplayLocaleUi(context, app.packageName, resolveInfos)
+    }
+
+    val summaryFlow = flow { emit(getSummary()) }
+
+    private suspend fun getSummary() = withContext(Dispatchers.IO) {
+        AppLocaleDetails.getSummary(context, app).toString()
+    }
+
+    fun startActivity() {
+        val intent = Intent(context, AppLocalePickerActivity::class.java).apply {
+            data = Uri.parse("package:" + app.packageName)
+            putExtra(AppInfoBase.ARG_PACKAGE_UID, app.uid)
+        }
+        context.startActivityAsUser(intent, app.userHandle)
+    }
+}