/***************************************************************************
* Copyright 2006-2016 by Christian Ihle *
* contact@kouchat.net *
* *
* This file is part of KouChat. *
* *
* KouChat is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 3 of *
* the License, or (at your option) any later version. *
* *
* KouChat is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with KouChat. *
* If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
package net.usikkert.kouchat.android.component;
import android.text.Editable;
import android.text.TextWatcher;
/**
* A {@link TextWatcher} that removes all new lines. Useful on multi-line text fields.
*
* @author Christian Ihle
*/
public class NoNewLineTextWatcher implements TextWatcher {
@Override
public void beforeTextChanged(final CharSequence s, final int start, final int count, final int after) {
}
@Override
public void onTextChanged(final CharSequence s, final int start, final int before, final int count) {
}
@Override
public void afterTextChanged(final Editable text) {
// Iterates the string backwards and removes "\n"
for (int i = text.length(); i > 0; i--) {
final CharSequence character = text.subSequence(i - 1, i);
if (character.toString().equals("\n")) {
text.replace(i - 1, i, "");
}
}
}
}