44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
|
/*
|
||
|
* 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);
|
||
|
}
|