/*
 * Created on Dec 26, 2005
 *
 */
package net.atlanticbb.tantlinger.ui.text.actions;

import java.awt.event.ActionEvent;

import javax.swing.Action;
import javax.swing.JEditorPane;
import javax.swing.text.Element;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;

import net.atlanticbb.tantlinger.ui.text.HTMLUtils;

/**
 * Tab action for tabbing between table cells
 * 
 * @author Bob Tantlinger
 *
 */
public class TabAction extends DecoratedTextAction
{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    public static final int FORWARD = 0;
    public static final int BACKWARD = 1;
    
    //private Action delegate;
    private int type;
    
    public TabAction(int type, Action defaultTabAction)
    {
        super("tabAction", defaultTabAction);
        //delegate = defaultTabAction;
        this.type = type;
    }    
    
    public void actionPerformed(ActionEvent e)
    {
        JEditorPane editor;
        HTMLDocument document; 
        
        editor = (JEditorPane)getTextComponent(e);
        document = (HTMLDocument)editor.getDocument();
        Element elem = document.getParagraphElement(editor.getCaretPosition());
        Element tdElem = HTMLUtils.getParent(elem, HTML.Tag.TD);
        if(tdElem != null)
        {
            try
            {
                if(type == FORWARD)
                    editor.setCaretPosition(tdElem.getEndOffset());
                else
                   editor.setCaretPosition(tdElem.getStartOffset() - 1);
            }
            catch(IllegalArgumentException ex)
            {
                ex.printStackTrace();
            }
        }
        else     
            delegate.actionPerformed(e);            
    }

}