Add admin-set default apps to Enterprise Privacy Settings page

This CL adds information about the number of default handlers for
common intents (e.g. browser, e-mail, calendar) set by the admin.

Bug: 32692748
Test: make RunSettingsRoboTests

Change-Id: I569d9ddabeee2b2aa9a892b28066abb8bf920fcf

src/com/android/settings/enterprise/EnterpriseSetDefaultAppsPreferenceController.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.enterprise;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.provider.ContactsContract;
+import android.provider.MediaStore;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.applications.ApplicationFeatureProvider;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.overlay.FeatureFactory;
+
+public class EnterpriseSetDefaultAppsPreferenceController extends PreferenceController {
+
+    private static final String KEY_DEFAULT_APPS = "number_enterprise_set_default_apps";
+    private final ApplicationFeatureProvider mFeatureProvider;
+
+    public EnterpriseSetDefaultAppsPreferenceController(Context context) {
+        super(context);
+        mFeatureProvider = FeatureFactory.getFactory(context)
+                .getApplicationFeatureProvider(context);
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        // Browser
+        int num = mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                buildIntent(Intent.ACTION_VIEW, Intent.CATEGORY_BROWSABLE, "http:", null)}).size();
+        // Camera
+        num += mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                new Intent(MediaStore.ACTION_IMAGE_CAPTURE),
+                new Intent(MediaStore.ACTION_VIDEO_CAPTURE)}).size();
+        // Map
+        num += mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                buildIntent(Intent.ACTION_VIEW, null, "geo:", null)}).size();
+        // E-mail
+        num += mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                new Intent(Intent.ACTION_SENDTO), new Intent(Intent.ACTION_SEND),
+                new Intent(Intent.ACTION_SEND_MULTIPLE)}).size();
+        // Calendar
+        num += mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                buildIntent(Intent.ACTION_INSERT, null, null, "vnd.android.cursor.dir/event")})
+                .size();
+        // Contacts
+        num += mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                buildIntent(Intent.ACTION_PICK, null, null,
+                        ContactsContract.Contacts.CONTENT_TYPE)}).size();
+        // Dialer
+        num += mFeatureProvider.findPersistentPreferredActivities(new Intent[] {
+                new Intent(Intent.ACTION_DIAL), new Intent(Intent.ACTION_CALL)}).size();
+
+        if (num == 0) {
+            preference.setVisible(false);
+        } else {
+            preference.setVisible(true);
+            preference.setTitle(mContext.getResources().getQuantityString(
+                    R.plurals.enterprise_privacy_number_enterprise_set_default_apps,
+                    num, num));
+        }
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_DEFAULT_APPS;
+    }
+
+    private static Intent buildIntent(String action, String category, String protocol,
+            String type) {
+        final Intent intent = new Intent(action);
+        if (category != null) {
+            intent.addCategory(category);
+        }
+        if (protocol != null) {
+            intent.setData(Uri.parse(protocol));
+        }
+        if (type != null) {
+            intent.setType(type);
+        }
+        return intent;
+    }
+}