Deprecate AppListPreference and AppListPrefWithSettings

- Convert ManageAssist into DashboardFragment
- Convert default assist pref to DefaultAppPickerFragment
- Add PreferenceController for each pref
- Add tests

Bug: 35203386
Test: make RunSettingsRoboTests

Change-Id: I0350a06cae7457809fb261e2d8ec99eda80cc50a

src/com/android/settings/applications/assist/DefaultAssistPreferenceController.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2017 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.applications.assist;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.service.voice.VoiceInteractionService;
+import android.service.voice.VoiceInteractionServiceInfo;
+
+import com.android.internal.app.AssistUtils;
+import com.android.settings.applications.defaultapps.DefaultAppInfo;
+import com.android.settings.applications.defaultapps.DefaultAppPreferenceController;
+
+import java.util.List;
+
+public class DefaultAssistPreferenceController extends DefaultAppPreferenceController {
+
+    private static final String KEY_DEFAULT_ASSIST = "default_assist";
+
+    private AssistUtils mAssistUtils;
+
+    public DefaultAssistPreferenceController(Context context) {
+        super(context);
+        mAssistUtils = new AssistUtils(context);
+    }
+
+    @Override
+    protected Intent getSettingIntent(DefaultAppInfo info) {
+        final ComponentName cn = mAssistUtils.getAssistComponentForUser(mUserId);
+        if (cn == null) {
+            return null;
+        }
+        final Intent probe = new Intent(VoiceInteractionService.SERVICE_INTERFACE)
+                .setPackage(cn.getPackageName());
+
+        final PackageManager pm = mPackageManager.getPackageManager();
+        final List<ResolveInfo> services = pm.queryIntentServices(probe, PackageManager
+                .GET_META_DATA);
+        if (services == null || services.isEmpty()) {
+            return null;
+        }
+        final ResolveInfo resolveInfo = services.get(0);
+        final VoiceInteractionServiceInfo voiceInfo =
+                new VoiceInteractionServiceInfo(pm, resolveInfo.serviceInfo);
+        if (!voiceInfo.getSupportsAssist()) {
+            return null;
+        }
+        final String activity = voiceInfo.getSettingsActivity();
+        return new Intent(Intent.ACTION_MAIN)
+                .setComponent(new ComponentName(cn.getPackageName(), activity));
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_DEFAULT_ASSIST;
+    }
+
+    @Override
+    protected DefaultAppInfo getDefaultAppInfo() {
+        final ComponentName cn = mAssistUtils.getAssistComponentForUser(mUserId);
+        if (cn == null) {
+            return null;
+        }
+        return new DefaultAppInfo(mUserId, cn);
+    }
+}