mirror of
https://codeberg.org/Mercury-IM/Smack
synced 2024-08-25 10:20:27 +02:00
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2408 b35dd754-fafc-0310-a699-88a17e54d16e
121 lines
3.3 KiB
Java
121 lines
3.3 KiB
Java
/**
|
|
* $RCSfile$
|
|
* $Revision$
|
|
* $Date$
|
|
*
|
|
* Copyright 2003-2004 Jive Software.
|
|
*
|
|
* All rights reserved. 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 org.jivesoftware.smack.util;
|
|
|
|
import java.io.*;
|
|
import java.util.*;
|
|
|
|
/**
|
|
* An ObservableWriter is a wrapper on a Writer that notifies to its listeners when
|
|
* writing to character streams.
|
|
*
|
|
* @author Gaston Dombiak
|
|
*/
|
|
public class ObservableWriter extends Writer {
|
|
|
|
Writer wrappedWriter = null;
|
|
List listeners = new ArrayList();
|
|
|
|
public ObservableWriter(Writer wrappedWriter) {
|
|
this.wrappedWriter = wrappedWriter;
|
|
}
|
|
|
|
public void write(char cbuf[], int off, int len) throws IOException {
|
|
wrappedWriter.write(cbuf, off, len);
|
|
String str = new String(cbuf, off, len);
|
|
notifyListeners(str);
|
|
}
|
|
|
|
public void flush() throws IOException {
|
|
wrappedWriter.flush();
|
|
}
|
|
|
|
public void close() throws IOException {
|
|
wrappedWriter.close();
|
|
}
|
|
|
|
public void write(int c) throws IOException {
|
|
wrappedWriter.write(c);
|
|
}
|
|
|
|
public void write(char cbuf[]) throws IOException {
|
|
wrappedWriter.write(cbuf);
|
|
String str = new String(cbuf);
|
|
notifyListeners(str);
|
|
}
|
|
|
|
public void write(String str) throws IOException {
|
|
wrappedWriter.write(str);
|
|
notifyListeners(str);
|
|
}
|
|
|
|
public void write(String str, int off, int len) throws IOException {
|
|
wrappedWriter.write(str, off, len);
|
|
str = str.substring(off, off + len);
|
|
notifyListeners(str);
|
|
}
|
|
|
|
/**
|
|
* Notify that a new string has been written.
|
|
*
|
|
* @param str the written String to notify
|
|
*/
|
|
private void notifyListeners(String str) {
|
|
WriterListener[] writerListeners = null;
|
|
synchronized (listeners) {
|
|
writerListeners = new WriterListener[listeners.size()];
|
|
listeners.toArray(writerListeners);
|
|
}
|
|
for (int i = 0; i < writerListeners.length; i++) {
|
|
writerListeners[i].write(str);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds a writer listener to this writer that will be notified when
|
|
* new strings are sent.
|
|
*
|
|
* @param writerListener a writer listener.
|
|
*/
|
|
public void addWriterListener(WriterListener writerListener) {
|
|
if (writerListener == null) {
|
|
return;
|
|
}
|
|
synchronized (listeners) {
|
|
if (!listeners.contains(writerListener)) {
|
|
listeners.add(writerListener);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes a writer listener from this writer.
|
|
*
|
|
* @param writerListener a writer listener.
|
|
*/
|
|
public void removeWriterListener(WriterListener writerListener) {
|
|
synchronized (listeners) {
|
|
listeners.remove(writerListener);
|
|
}
|
|
}
|
|
|
|
}
|