1 files changed, 153 insertions, 0 deletions
diff --git a/Settings/src/com/android/tv/settings/autofill/AutofillHelper.java b/Settings/src/com/android/tv/settings/autofill/AutofillHelper.java
new file mode 100644
index 000000000..790b3a725
--- /dev/null
+++ b/Settings/src/com/android/tv/settings/autofill/AutofillHelper.java
@@ -0,0 +1,153 @@
+/*
+ * 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.tv.settings.autofill;
+
+import android.Manifest;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.provider.Settings;
+import android.service.autofill.AutofillService;
+import android.service.autofill.AutofillServiceInfo;
+import android.text.TextUtils;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.android.settingslib.applications.DefaultAppInfo;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Helper class for autofill related settings.
+ */
+public class AutofillHelper {
+
+    private static final String TAG = "AutofillHelper";
+    static final Intent AUTOFILL_PROBE = new Intent(AutofillService.SERVICE_INTERFACE);
+
+    /**
+     * Get a list of autofill services.
+     */
+    @NonNull
+    public static List<DefaultAppInfo> getAutofillCandidates(@NonNull Context context,
+            @NonNull PackageManager pm, int myUserId) {
+        final List<DefaultAppInfo> candidates = new ArrayList<>();
+        final List<ResolveInfo> resolveInfos = pm.queryIntentServices(
+                AUTOFILL_PROBE, PackageManager.GET_META_DATA);
+        for (ResolveInfo info : resolveInfos) {
+            final String permission = info.serviceInfo.permission;
+            if (Manifest.permission.BIND_AUTOFILL_SERVICE.equals(permission)
+                    || Manifest.permission.BIND_AUTOFILL.equals(permission)) {
+                candidates.add(new DefaultAppInfo(context, pm, myUserId, new ComponentName(
+                        info.serviceInfo.packageName, info.serviceInfo.name)));
+            }
+        }
+        return candidates;
+    }
+
+    /**
+     * Get flattened ComponentName of current autofill service
+     */
+    @Nullable
+    public static String getCurrentAutofill(@NonNull Context context) {
+        return Settings.Secure.getString(context.getContentResolver(),
+                Settings.Secure.AUTOFILL_SERVICE);
+    }
+
+    /**
+     * Get flattened ComponentName of current autofill service
+     */
+    @Nullable
+    public static ComponentName getCurrentAutofillAsComponentName(@NonNull Context context) {
+        String flattenedName = getCurrentAutofill(context);
+        return TextUtils.isEmpty(flattenedName)
+                ? null : ComponentName.unflattenFromString(flattenedName);
+    }
+
+    /**
+     * Find the current autofill service from the list.
+     */
+    @Nullable
+    public static DefaultAppInfo getCurrentAutofill(@NonNull Context context,
+            @NonNull List<DefaultAppInfo> candidates) {
+        final ComponentName name = getCurrentAutofillAsComponentName(context);
+        for (int i = 0; i < candidates.size(); i++) {
+            DefaultAppInfo appInfo = candidates.get(i);
+            if ((name == null && appInfo.componentName == null)
+                    || (name != null && name.equals(appInfo.componentName))) {
+                return appInfo;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Get the Intent for settings activity of autofill service. Returns null if does not exist.
+     */
+    @Nullable
+    public static Intent getAutofillSettingsIntent(@NonNull Context context,
+            @NonNull PackageManager pm, @Nullable DefaultAppInfo appInfo) {
+        if (appInfo == null || appInfo.componentName == null) {
+            return null;
+        }
+        String plattenString = appInfo.componentName.flattenToString();
+        final List<ResolveInfo> resolveInfos = pm.queryIntentServices(
+                AUTOFILL_PROBE, PackageManager.GET_META_DATA);
+
+        for (ResolveInfo resolveInfo : resolveInfos) {
+            final ServiceInfo serviceInfo = resolveInfo.serviceInfo;
+            final String flattenKey = new ComponentName(
+                    serviceInfo.packageName, serviceInfo.name).flattenToString();
+            if (TextUtils.equals(plattenString, flattenKey)) {
+                final String settingsActivity;
+                try {
+                    settingsActivity = new AutofillServiceInfo(context, serviceInfo)
+                            .getSettingsActivity();
+                } catch (SecurityException e) {
+                    // Service does not declare the proper permission, ignore it.
+                    Log.w(TAG, "Error getting info for " + serviceInfo + ": " + e);
+                    return null;
+                }
+                if (TextUtils.isEmpty(settingsActivity)) {
+                    return null;
+                }
+                return new Intent(Intent.ACTION_MAIN).setComponent(
+                        new ComponentName(serviceInfo.packageName, settingsActivity));
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Set autofill service and write to settings.
+     */
+    public static void setCurrentAutofill(@NonNull Context context, @Nullable String id) {
+        if (id == null) {
+            throw new IllegalArgumentException("Null ID");
+        }
+        Settings.Secure.putString(context.getContentResolver(), Settings.Secure.AUTOFILL_SERVICE,
+                id);
+    }
+
+}