Convert EncryptionAndCredential into DashboardFragment

The logic still lives in fragment for now. They will be moved into
PrefControllers in follow-up changes.

Bug: 32953042
Test: RoboTests
Change-Id: I2b03d26b5f4e6bbb37b42f9dc83a9464eb169868

res/xml/security_settings_misc.xml

@@ -64,7 +64,7 @@
         android:key="encryption_and_credential"
         android:title="@string/encryption_and_credential_settings_title"
         android:summary="@string/encryption_and_credential_settings_summary"
-        android:fragment="com.android.settings.EncryptionAndCredential"/>
+        android:fragment="com.android.settings.security.EncryptionAndCredential"/>
 
     <Preference android:key="manage_trust_agents"
         android:title="@string/manage_trust_agents"

src/com/android/settings/dashboard/DashboardFragment.java

@@ -183,6 +183,9 @@ public abstract class DashboardFragment extends SettingsPreferenceFragment
         }
     }
 
+    @Override
+    protected abstract int getPreferenceScreenResId();
+
     protected <T extends AbstractPreferenceController> T getPreferenceController(Class<T> clazz) {
         AbstractPreferenceController controller = mPreferenceControllers.get(clazz);
         return (T) controller;

src/com/android/settings/search/SearchIndexableResources.java

@@ -23,7 +23,6 @@ import android.support.annotation.XmlRes;
 import com.android.settings.DateTimeSettings;
 import com.android.settings.DeviceInfoSettings;
 import com.android.settings.DisplaySettings;
-import com.android.settings.EncryptionAndCredential;
 import com.android.settings.LegalSettings;
 import com.android.settings.ScreenPinningSettings;
 import com.android.settings.SecuritySettings;
@@ -75,6 +74,7 @@ import com.android.settings.notification.ZenModeAutomationSettings;
 import com.android.settings.notification.ZenModeBehaviorSettings;
 import com.android.settings.notification.ZenModeSettings;
 import com.android.settings.print.PrintSettingsFragment;
+import com.android.settings.security.EncryptionAndCredential;
 import com.android.settings.security.LockscreenDashboardFragment;
 import com.android.settings.sim.SimSettings;
 import com.android.settings.support.SupportDashboardActivity;

src/com/android/settings/security/EncryptionAndCredential.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007 The Android Open Source Project
+ * 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.
@@ -14,13 +14,11 @@
  * limitations under the License.
  */
 
-package com.android.settings;
+package com.android.settings.security;
 
-import android.app.Activity;
 import android.app.admin.DevicePolicyManager;
 import android.content.Context;
 import android.content.Intent;
-import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.SearchIndexableResource;
@@ -30,11 +28,12 @@ import android.support.v7.preference.PreferenceScreen;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.internal.widget.LockPatternUtils;
+import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
-import com.android.settings.search.Indexable;
 import com.android.settingslib.RestrictedLockUtils;
 import com.android.settingslib.RestrictedPreference;
+import com.android.settingslib.core.AbstractPreferenceController;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -43,7 +42,7 @@ import java.util.List;
  * Encryption and Credential settings.
  * TODO: Extends this from {@link DashboardFragment} instead
  */
-public class EncryptionAndCredential extends SettingsPreferenceFragment implements Indexable {
+public class EncryptionAndCredential extends DashboardFragment {
 
     private static final String TAG = "EncryptionAndCredential";
 
@@ -69,12 +68,19 @@ public class EncryptionAndCredential extends SettingsPreferenceFragment implemen
     }
 
     @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
+    protected String getLogTag() {
+        return TAG;
+    }
 
-        final Activity activity = getActivity();
+    @Override
+    protected List<AbstractPreferenceController> getPreferenceControllers(Context context) {
+        mUm = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        return null;
+    }
 
-        mUm = UserManager.get(activity);
+    @Override
+    protected int getPreferenceScreenResId() {
+        return 0;
     }
 
     /**

tests/robotests/src/com/android/settings/security/EncryptionAndCredentialTest.java

@@ -11,14 +11,14 @@
  * 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
+ * limitations under the License.
  */
 
-package com.android.settings;
+package com.android.settings.security;
 
 import static android.app.admin.DevicePolicyManager.ENCRYPTION_STATUS_ACTIVE;
 import static android.app.admin.DevicePolicyManager.ENCRYPTION_STATUS_INACTIVE;
-import static com.android.settings.EncryptionAndCredential.SEARCH_INDEX_DATA_PROVIDER;
+import static com.android.settings.security.EncryptionAndCredential.SEARCH_INDEX_DATA_PROVIDER;
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.Mockito.when;
 
@@ -28,6 +28,8 @@ import android.os.UserManager;
 import android.provider.SearchIndexableResource;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.TestConfig;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.testutils.SettingsRobolectricTestRunner;