/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* 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 net.java.sip.communicator.impl.gui.main.chat.replacers;
import net.java.sip.communicator.impl.gui.main.chat.*;
/**
* NewlineReplacer for replacing newlines with a combined version of a
* <br> tag and a <tt>\n</tt> character. This special treatment is
* necessary because copy-paste operations from the chat window do not recognize
* the <br> tags as line breaks.
*
* @author Danny van Heumen
*/
public class NewlineReplacer
implements Replacer
{
/**
* The NewlineReplacer expects HTML content.
*
* @return returns false
*/
@Override
public boolean expectsPlainText()
{
return false;
}
/**
* New line characters are searched and replaced with a combination of
* newline and br tag.
*
* @param target the destination for to write the replacement result to
* @param piece the piece of content to process
*/
@Override
public void replace(final StringBuilder target, final String piece)
{
/*
* <br> tags are needed to visualize a new line in the html format, but
* when copied to the clipboard they are exported to the plain text
* format as ' ' and not as '\n'.
*
* See bug N4988885:
* http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4988885
*
* To fix this we need "
" - the HTML-Code for ASCII-Character No.10
* (Line feed).
*/
target.append(piece.replaceAll("\n", "<BR/>
"));
}
}