Move AccessibilityUtils to SettingsLib

Change-Id: I99eeb79b03e56a0150a8dbebc3cc5c292ad9bcfe

packages/SettingsLib/src/com/android/settingslib/accessibility/AccessibilityUtils.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 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.settingslib.accessibility;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.provider.Settings;
+import android.text.TextUtils;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
+
+public class AccessibilityUtils {
+    public static final char ENABLED_ACCESSIBILITY_SERVICES_SEPARATOR = ':';
+
+    final static TextUtils.SimpleStringSplitter sStringColonSplitter =
+            new TextUtils.SimpleStringSplitter(ENABLED_ACCESSIBILITY_SERVICES_SEPARATOR);
+
+    /**
+     * @return the set of enabled accessibility services. If there are not services
+     * it returned the unmodifiable {@link Collections#emptySet()}.
+     */
+    public static Set<ComponentName> getEnabledServicesFromSettings(Context context) {
+        final String enabledServicesSetting = Settings.Secure.getString(
+                context.getContentResolver(), Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
+        if (enabledServicesSetting == null) {
+            return Collections.emptySet();
+        }
+
+        final Set<ComponentName> enabledServices = new HashSet<ComponentName>();
+        final TextUtils.SimpleStringSplitter colonSplitter = sStringColonSplitter;
+        colonSplitter.setString(enabledServicesSetting);
+
+        while (colonSplitter.hasNext()) {
+            final String componentNameString = colonSplitter.next();
+            final ComponentName enabledService = ComponentName.unflattenFromString(
+                    componentNameString);
+            if (enabledService != null) {
+                enabledServices.add(enabledService);
+            }
+        }
+
+        return enabledServices;
+    }
+
+    /**
+     * @return a localized version of the text resource specified by resId
+     */
+    public static CharSequence getTextForLocale(Context context, Locale locale, int resId) {
+        final Resources res = context.getResources();
+        final Configuration config = new Configuration(res.getConfiguration());
+        config.setLocale(locale);
+        final Context langContext = context.createConfigurationContext(config);
+        return langContext.getText(resId);
+    }
+}