App language migration

Implement current app language page using spa arch.

Bug: 236346018
Test: manual test with Settings app

Change-Id: I3d3c97304a381acec9d9ef0c27bd047a40ffc4a8

src/com/android/settings/spa/system/SystemMain.kt

@@ -0,0 +1,64 @@
+/*
+ * 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.system
+
+import android.os.Bundle
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Info
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import com.android.settings.R
+import com.android.settingslib.spa.framework.common.SettingsEntryBuilder
+import com.android.settingslib.spa.framework.common.SettingsPage
+import com.android.settingslib.spa.framework.common.SettingsPageProvider
+import com.android.settingslib.spa.framework.compose.navigator
+import com.android.settingslib.spa.framework.compose.toState
+import com.android.settingslib.spa.widget.preference.Preference
+import com.android.settingslib.spa.widget.preference.PreferenceModel
+import com.android.settingslib.spa.widget.scaffold.RegularScaffold
+import com.android.settingslib.spa.widget.ui.SettingsIcon
+
+object SystemMainPageProvider : SettingsPageProvider {
+    override val name = "SystemMain"
+
+    @Composable
+    override fun Page(arguments: Bundle?) {
+        SystemMain()
+    }
+
+    @Composable
+    fun EntryItem() {
+        Preference(object : PreferenceModel {
+            override val title = stringResource(R.string.header_category_system)
+            override val summary = stringResource(R.string.system_dashboard_summary).toState()
+            override val onClick = navigator(name)
+            override val icon = @Composable {
+                SettingsIcon(imageVector = Icons.Outlined.Info)
+            }
+        })
+    }
+
+    fun buildInjectEntry() =
+        SettingsEntryBuilder.createInject(owner = SettingsPage.create(name)).setIsAllowSearch(false)
+}
+
+@Composable
+private fun SystemMain() {
+    RegularScaffold(title = stringResource(R.string.header_category_system)) {
+        LanguageAndInputPageProvider.EntryItem()
+    }
+}