Introduce WebViewAppPreferenceControllerV2

- Create new WebViewAppPreferenceControllerV2
 - Deprecate WebViewAppPreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I45bb7beb98ef9c7a998f64e81d180613c795ed3a

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -246,7 +246,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         // running services
         // convert to file encryption
         controllers.add(new PictureColorModePreferenceController(context, lifecycle));
-        // webview implementation
+        controllers.add(new WebViewAppPreferenceControllerV2(context));
         controllers.add(new CoolColorTemperaturePreferenceController(context));
         controllers.add(new DisableAutomaticUpdatesPreferenceController(context));
         // system ui demo mode

src/com/android/settings/development/WebViewAppPreferenceControllerV2.java

@@ -0,0 +1,101 @@
+/*
+ * 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.development;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+import android.graphics.drawable.Drawable;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.TextUtils;
+import android.util.Log;
+
+import com.android.settings.R;
+import com.android.settings.applications.defaultapps.DefaultAppInfo;
+import com.android.settings.webview.WebViewUpdateServiceWrapper;
+import com.android.settingslib.wrapper.PackageManagerWrapper;
+
+public class WebViewAppPreferenceControllerV2 extends DeveloperOptionsPreferenceController {
+
+    private static final String TAG = "WebViewAppPrefCtrl";
+    private static final String WEBVIEW_APP_KEY = "select_webview_provider";
+
+    private final PackageManagerWrapper mPackageManager;
+    private final WebViewUpdateServiceWrapper mWebViewUpdateServiceWrapper;
+
+    private Preference mPreference;
+
+    public WebViewAppPreferenceControllerV2(Context context) {
+        super(context);
+
+        mPackageManager = new PackageManagerWrapper(context.getPackageManager());
+        mWebViewUpdateServiceWrapper = new WebViewUpdateServiceWrapper();
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return WEBVIEW_APP_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final CharSequence defaultAppLabel = getDefaultAppLabel();
+        if (!TextUtils.isEmpty(defaultAppLabel)) {
+            mPreference.setSummary(defaultAppLabel);
+            mPreference.setIcon(getDefaultAppIcon());
+        } else {
+            Log.d(TAG, "No default app");
+            mPreference.setSummary(R.string.app_list_preference_none);
+            mPreference.setIcon(null);
+        }
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        mPreference.setEnabled(true);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        mPreference.setEnabled(false);
+    }
+
+    @VisibleForTesting
+    DefaultAppInfo getDefaultAppInfo() {
+        final PackageInfo currentPackage = mWebViewUpdateServiceWrapper.getCurrentWebViewPackage();
+        return new DefaultAppInfo(mPackageManager,
+                currentPackage == null ? null : currentPackage.applicationInfo);
+    }
+
+    private Drawable getDefaultAppIcon() {
+        final DefaultAppInfo app = getDefaultAppInfo();
+        return app.loadIcon();
+    }
+
+    private CharSequence getDefaultAppLabel() {
+        final DefaultAppInfo app = getDefaultAppInfo();
+        return app.loadLabel();
+    }
+}