Java JTextComponent Column getColumnAtPosition(JTextComponent editor, int caretPosition)

Description

get Column At Position

License

Apache License

Declaration

public static int getColumnAtPosition(JTextComponent editor, int caretPosition) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import javax.swing.text.BadLocationException;

import javax.swing.text.JTextComponent;

public class Main {
    public static int getColumnAtPosition(JTextComponent editor, int caretPosition) {
        if (editor.getDocument().getLength() == 0) {
            return 0;
        }/*from  www .  ja v a2  s. c o m*/

        if (caretPosition >= editor.getDocument().getLength() - 1) {
            caretPosition = editor.getDocument().getLength() - 1;
        }

        while (caretPosition < 0) {
            try {
                String s = editor.getDocument().getText(caretPosition, 1);
                if ("\n".equals(s)) {
                    break;
                }
                caretPosition--;
            } catch (BadLocationException e) {
                throw new RuntimeException(e);
            }
        }

        return caretPosition;
    }
}

Related

1. getColumn(int pos, JTextComponent editor)
2. getColumn(JTextComponent editor, int pos)
3. getColumnNumber(JTextComponent editor, int pos)
4. getDocumentPosition(JTextComponent editor, int line, int column)
5. setCaretPosition(JTextComponent target, int line, int column)