| /* |
| * Copyright (C) 2012 Google Inc. |
| * |
| * 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.googlecode.eyesfree.braille.display; |
| |
| import com.googlecode.eyesfree.braille.display.IBrailleServiceCallback; |
| |
| /** |
| * Interface for clients to talk to the braille display service. |
| */ |
| interface IBrailleService { |
| /** |
| * Register a callback for the {@code callingApp} which will receive |
| * certain braille display related events. |
| */ |
| boolean registerCallback(in IBrailleServiceCallback callback); |
| |
| /** |
| * Unregister a previously registered callback for the {@code callingApp}. |
| */ |
| oneway void unregisterCallback(in IBrailleServiceCallback callback); |
| |
| /** |
| * Updates the main cells of the connected braille display |
| * with a given dot {@code pattern}. |
| * |
| * @return {@code true} on success and {@code false} otherwise. |
| */ |
| void displayDots(in byte[] patterns); |
| } |