| /* |
| * Copyright (C) 2009 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 android.view.accessibility; |
| |
| import android.content.Context; |
| import android.content.pm.ServiceInfo; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * System level service that serves as an event dispatch for {@link AccessibilityEvent}s. |
| * Such events are generated when something notable happens in the user interface, |
| * for example an {@link android.app.Activity} starts, the focus or selection of a |
| * {@link android.view.View} changes etc. Parties interested in handling accessibility |
| * events implement and register an accessibility service which extends |
| * {@link android.accessibilityservice.AccessibilityService}. |
| * |
| * @see AccessibilityEvent |
| * @see android.accessibilityservice.AccessibilityService |
| * @see android.content.Context#getSystemService |
| */ |
| public final class AccessibilityManager { |
| private static AccessibilityManager sInstance = new AccessibilityManager(); |
| |
| /** |
| * Get an AccessibilityManager instance (create one if necessary). |
| * |
| * @hide |
| */ |
| public static AccessibilityManager getInstance(Context context) { |
| return sInstance; |
| } |
| |
| /** |
| * Create an instance. |
| * |
| * @param context A {@link Context}. |
| */ |
| private AccessibilityManager() { |
| } |
| |
| /** |
| * Returns if the {@link AccessibilityManager} is enabled. |
| * |
| * @return True if this {@link AccessibilityManager} is enabled, false otherwise. |
| */ |
| public boolean isEnabled() { |
| return false; |
| } |
| |
| /** |
| * Sends an {@link AccessibilityEvent}. If this {@link AccessibilityManager} is not |
| * enabled the call is a NOOP. |
| * |
| * @param event The {@link AccessibilityEvent}. |
| * |
| * @throws IllegalStateException if a client tries to send an {@link AccessibilityEvent} |
| * while accessibility is not enabled. |
| */ |
| public void sendAccessibilityEvent(AccessibilityEvent event) { |
| } |
| |
| /** |
| * Requests interruption of the accessibility feedback from all accessibility services. |
| */ |
| public void interrupt() { |
| } |
| |
| /** |
| * Returns the {@link ServiceInfo}s of the installed accessibility services. |
| * |
| * @return An unmodifiable list with {@link ServiceInfo}s. |
| */ |
| public List<ServiceInfo> getAccessibilityServiceList() { |
| List<ServiceInfo> services = null; |
| return Collections.unmodifiableList(services); |
| } |
| } |