Java JTextComponent Tab getTab(JTextComponent target)

Description

Return a string with number of spaces equal to the tab-stop of the TextComponent

License

Apache License

Declaration

public static String getTab(JTextComponent target) 

Method Source Code

//package com.java2s;
/*/* ww  w  . j ava  2s .  co  m*/
 * Copyright 2008 Ayman Al-Sairafi ayman.alsairafi@gmail.com
 * Copyright 2011-2017 Hanns Holger Rutz.
 *
 * 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.  
 */

import javax.swing.text.JTextComponent;
import javax.swing.text.PlainDocument;

public class Main {
    final static String SPACES = "                ";

    /**
     * Return a string with number of spaces equal to the tab-stop of the TextComponent
     */
    public static String getTab(JTextComponent target) {
        return SPACES.substring(0, getTabSize(target));
    }

    /**
     * Return the TabStop property for the given text component, or 0 if not
     * used
     */
    public static int getTabSize(JTextComponent text) {
        Integer tabs = (Integer) text.getDocument().getProperty(PlainDocument.tabSizeAttribute);
        return (null == tabs) ? 0 : tabs.intValue();
    }
}

Related

1. disableTab(final JTextComponent txtComp)
2. getTabSize(JTextComponent text)
3. paintAboveline(Graphics g, JTextComponent tc, int pos0, int pos1)