58 lines
1.6 KiB
Java
58 lines
1.6 KiB
Java
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//
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// MyDocumentFilter.java
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// guiserver
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//
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// Created by Lutz Mueller on 7/7/07.
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//
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//
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// Copyright (C) 2016 Lutz Mueller
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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import javax.swing.*;
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import javax.swing.text.*;
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import java.awt.Toolkit;
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public class MyDocumentFilter extends DocumentFilter
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{
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int maxCharacters;
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public MyDocumentFilter(int max)
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{
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maxCharacters = max;
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}
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public void insertString(FilterBypass fb, int offs, String str, AttributeSet a) throws BadLocationException
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{
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if ((fb.getDocument().getLength() + str.length()) <= maxCharacters)
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super.insertString(fb, offs, str, a);
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else
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Toolkit.getDefaultToolkit().beep();
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}
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public void replace(FilterBypass fb, int offs, int length, String str, AttributeSet a) throws BadLocationException
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{
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if ((fb.getDocument().getLength() + str.length()
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- length) <= maxCharacters)
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super.replace(fb, offs, length, str, a);
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else
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Toolkit.getDefaultToolkit().beep();
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}
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}
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// eof //
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