Adds SecuritySetting feature for providing an alternative SecuritySettings fragment

Bug: 181764224
Test: New tests added to SettingsUnitTests.
Test: Tested manually with and without feature-provided fragment.
Test: No new failures in SettingsUnitTests, or robolectric. No failures in security directory of robolectric tests.
Change-Id: I21038baf3098c18e1713a332085a5efc376f73da

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

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 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.security;
+
+/** FeatureProvider for security settings. */
+public interface SecuritySettingsFeatureProvider {
+
+    /** Returns whether an alternative SecuritySettings fragment is available. */
+    boolean hasAlternativeSecuritySettingsFragment();
+
+    /** Returns the alternative SecuritySettings fragment name if available. */
+    String getAlternativeSecuritySettingsFragmentClassname();
+}

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

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2021 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.security;
+
+/** Implementation for {@code SecuritySettingsFeatureProvider}. */
+public class SecuritySettingsFeatureProviderImpl implements SecuritySettingsFeatureProvider {
+
+    @Override
+    public boolean hasAlternativeSecuritySettingsFragment() {
+        return false;
+    }
+
+    @Override
+    public String getAlternativeSecuritySettingsFragmentClassname() {
+        return null;
+    }
+}

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

@@ -19,12 +19,17 @@ package com.android.settings.security;
 import android.content.Context;
 import android.hardware.face.FaceManager;
 import android.hardware.fingerprint.FingerprintManager;
+import android.text.TextUtils;
 import android.util.FeatureFlagUtils;
 
+import androidx.preference.Preference;
+
 import com.android.settings.R;
 import com.android.settings.Utils;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.FeatureFlags;
+import com.android.settings.core.SubSettingLauncher;
+import com.android.settings.overlay.FeatureFactory;
 
 public class TopLevelSecurityEntryPreferenceController extends BasePreferenceController {
 
@@ -56,4 +61,28 @@ public class TopLevelSecurityEntryPreferenceController extends BasePreferenceCon
             return mContext.getText(R.string.security_dashboard_summary_no_fingerprint);
         }
     }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (!TextUtils.equals(preference.getKey(), getPreferenceKey())) {
+            return super.handlePreferenceTreeClick(preference);
+        }
+
+        SecuritySettingsFeatureProvider securitySettingsFeatureProvider =
+                FeatureFactory.getFactory(mContext).getSecuritySettingsFeatureProvider();
+        if (securitySettingsFeatureProvider.hasAlternativeSecuritySettingsFragment()) {
+            String alternativeFragmentClassname =
+                    securitySettingsFeatureProvider
+                            .getAlternativeSecuritySettingsFragmentClassname();
+            if (alternativeFragmentClassname != null) {
+                new SubSettingLauncher(mContext)
+                        .setDestination(alternativeFragmentClassname)
+                        .setSourceMetricsCategory(getMetricsCategory())
+                        .launch();
+                return true;
+            }
+        }
+
+        return super.handlePreferenceTreeClick(preference);
+    }
 }