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/DefaultVoiceInputPreferenceController.java

@@ -0,0 +1,165 @@
+/*
+ * 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.net.Uri;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
+
+import com.android.internal.app.AssistUtils;
+import com.android.settings.applications.defaultapps.DefaultAppInfo;
+import com.android.settings.applications.defaultapps.DefaultAppPreferenceController;
+import com.android.settings.core.lifecycle.Lifecycle;
+import com.android.settings.core.lifecycle.LifecycleObserver;
+import com.android.settings.core.lifecycle.events.OnPause;
+import com.android.settings.core.lifecycle.events.OnResume;
+
+import java.util.List;
+
+public class DefaultVoiceInputPreferenceController extends DefaultAppPreferenceController
+        implements LifecycleObserver, OnResume, OnPause {
+
+    private static final String KEY_VOICE_INPUT = "voice_input_settings";
+
+    private VoiceInputHelper mHelper;
+    private AssistUtils mAssistUtils;
+    private PreferenceScreen mScreen;
+    private Preference mPreference;
+    private SettingObserver mSettingObserver;
+
+    public DefaultVoiceInputPreferenceController(Context context, Lifecycle lifecycle) {
+        super(context);
+        mSettingObserver = new SettingObserver();
+        mAssistUtils = new AssistUtils(context);
+        mHelper = new VoiceInputHelper(context);
+        mHelper.buildUi();
+        if (lifecycle != null) {
+            lifecycle.addObserver(this);
+        }
+    }
+
+    @Override
+    public boolean isAvailable() {
+        // If current assist is also voice service, don't show voice preference.
+        final ComponentName currentVoiceService =
+                DefaultVoiceInputPicker.getCurrentService(mHelper);
+        final ComponentName currentAssist =
+                mAssistUtils.getAssistComponentForUser(mUserId);
+        return !DefaultVoiceInputPicker.isCurrentAssistVoiceService(
+                currentAssist, currentVoiceService);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_VOICE_INPUT;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        mScreen = screen;
+        mPreference = screen.findPreference(getPreferenceKey());
+        super.displayPreference(screen);
+    }
+
+    @Override
+    public void onResume() {
+        mSettingObserver.register(mContext.getContentResolver(), true);
+        updatePreference();
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(mPreference);
+        updatePreference();
+    }
+
+    @Override
+    public void onPause() {
+        mSettingObserver.register(mContext.getContentResolver(), false);
+    }
+
+    @Override
+    protected DefaultAppInfo getDefaultAppInfo() {
+        final String defaultKey = getDefaultAppKey();
+        if (defaultKey == null) {
+            return null;
+        }
+        for (VoiceInputHelper.InteractionInfo info : mHelper.mAvailableInteractionInfos) {
+            if (TextUtils.equals(defaultKey, info.key)) {
+                return new DefaultVoiceInputPicker.VoiceInputDefaultAppInfo(
+                        mUserId, info, true /* enabled */);
+            }
+        }
+
+        for (VoiceInputHelper.RecognizerInfo info : mHelper.mAvailableRecognizerInfos) {
+            if (TextUtils.equals(defaultKey, info.key)) {
+                return new DefaultVoiceInputPicker.VoiceInputDefaultAppInfo(
+                        mUserId, info, true /* enabled */);
+            }
+        }
+        return null;
+    }
+
+    @Override
+    protected Intent getSettingIntent(DefaultAppInfo info) {
+        final DefaultAppInfo appInfo = getDefaultAppInfo();
+        if (appInfo == null
+                || !(appInfo instanceof DefaultVoiceInputPicker.VoiceInputDefaultAppInfo)) {
+            return null;
+        }
+        return ((DefaultVoiceInputPicker.VoiceInputDefaultAppInfo) appInfo).getSettingIntent();
+    }
+
+    private void updatePreference() {
+        if (mPreference == null) {
+            return;
+        }
+        mHelper.buildUi();
+        if (isAvailable()) {
+            if (mScreen.findPreference(getPreferenceKey()) == null) {
+                // add it if it's not on scree
+                mScreen.addPreference(mPreference);
+            }
+        } else {
+            mScreen.removePreference(mPreference);
+        }
+    }
+
+    private String getDefaultAppKey() {
+        final ComponentName currentService = DefaultVoiceInputPicker.getCurrentService(mHelper);
+        if (currentService == null) {
+            return null;
+        }
+        return currentService.flattenToShortString();
+    }
+
+    class SettingObserver extends AssistSettingObserver {
+        @Override
+        protected List<Uri> getSettingUris() {
+            return null;
+        }
+
+        @Override
+        public void onSettingChange() {
+            updatePreference();
+        }
+    }
+}