/**
* Metaphase Editor - WYSIWYG HTML Editor Component
* Copyright (C) 2010 Rudolf Visagie
* Full text of license can be found in com/metaphaseeditor/LICENSE.txt
*
* This library 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.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* The author can be contacted at metaphase.editor@gmail.com.
*/
package com.metaphaseeditor.action;
import java.awt.event.ActionEvent;
import javax.swing.JTextPane;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.html.CSS;
import javax.swing.text.html.HTMLEditorKit;
import com.metaphaseeditor.MetaphaseEditorPanel;
/**
*
* @author Rudolf Visagie
*/
public class IncreaseIndentAction extends HTMLEditorKit.StyledTextAction {
private Float currentIndent = null;
private int newIndent = 0;
private MetaphaseEditorPanel editorPanel;
public IncreaseIndentAction(String actionName, MetaphaseEditorPanel editorPanel) {
super(actionName);
this.editorPanel = editorPanel;
}
@Override
public void actionPerformed(ActionEvent e) {
if (!this.isEnabled()) {
return;
}
JTextPane htmlTextPane = editorPanel.getHtmlTextPane();
MutableAttributeSet sas = new SimpleAttributeSet(htmlTextPane.getParagraphAttributes());
currentIndent = null;
if (sas.getAttribute(CSS.Attribute.MARGIN_LEFT) != null) {
currentIndent = new Float(sas.getAttribute(CSS.Attribute.MARGIN_LEFT).toString());
}
if (currentIndent == null) {
newIndent = 30;
} else {
newIndent = currentIndent.intValue() + 30;
currentIndent = new Float(newIndent);
}
if (newIndent < 0) {
newIndent = 0;
currentIndent = new Float(newIndent);
}
sas.removeAttribute(CSS.Attribute.MARGIN_LEFT);
sas.addAttribute(StyleConstants.LeftIndent, new Float(newIndent));
setParagraphAttributes(htmlTextPane, sas, true);
}
}