/**
* 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 java.io.IOException;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import javax.swing.JTextPane;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import com.metaphaseeditor.MetaphaseEditorException;
import com.metaphaseeditor.MetaphaseEditorPanel;
public class AddAttributesAction extends StyledEditorKit.StyledTextAction {
private Map<String, String> attributes;
private MetaphaseEditorPanel editorPanel;
public AddAttributesAction(MetaphaseEditorPanel editorPanel, String actionName, Map<String, String> attributes) {
super(actionName);
this.editorPanel = editorPanel;
this.attributes = attributes;
}
private AttributeSet getNewAttributes(AttributeSet attributeSet) {
MutableAttributeSet newAttrs = new SimpleAttributeSet(attributeSet);
if (attributes != null) {
Iterator iterator = attributes.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry entry = (Map.Entry) iterator.next();
newAttrs.addAttribute(entry.getKey(), entry.getValue());
}
}
return newAttrs;
}
public void addParagraphAttributes(HTMLDocument htmlDocument, int start, int end) {
// add attributes to paragraph
Element element = htmlDocument.getParagraphElement(start);
AttributeSet newAttrs = getNewAttributes(element.getAttributes());
htmlDocument.setParagraphAttributes(start, end - start, newAttrs, true);
}
public void addListItemAttributes(HTMLDocument htmlDocument, int start, int end) {
// add attributes to a listitem if we're currently within one
Element charElement = htmlDocument.getCharacterElement(start);
if (charElement != null) {
Element impliedParagraph = charElement.getParentElement();
if (impliedParagraph != null) {
Element listElement = impliedParagraph.getParentElement();
if (listElement.getName().equals("li")) {
StringBuffer attrBuffer = new StringBuffer();
if (attributes != null) {
Iterator iterator = attributes.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry entry = (Map.Entry) iterator.next();
attrBuffer.append(' ');
attrBuffer.append(entry.getKey());
attrBuffer.append("=\"");
attrBuffer.append(entry.getValue());
attrBuffer.append("\"");
}
}
// re-add the existing attributes to the list item
AttributeSet listElementAttrs = listElement.getAttributes();
Enumeration currentAttrEnum = listElementAttrs.getAttributeNames();
while (currentAttrEnum.hasMoreElements()) {
Object attrName = currentAttrEnum.nextElement();
if (!attributes.containsKey(attrName.toString())) {
Object attrValue = listElement.getAttributes().getAttribute(attrName);
if ((attrName instanceof String || attrName instanceof HTML.Attribute) && attrValue instanceof String) {
attrBuffer.append(' ');
attrBuffer.append(attrName.toString());
attrBuffer.append("=\"");
attrBuffer.append(attrValue);
attrBuffer.append("\"");
}
}
}
try {
String text = htmlDocument.getText(listElement.getStartOffset(),
listElement.getEndOffset() - listElement.getStartOffset());
htmlDocument.setOuterHTML(listElement, "<li" + attrBuffer.toString() + ">" + text + "</li>");
} catch (IOException ex) {
throw new MetaphaseEditorException(ex.getMessage(), ex);
} catch (BadLocationException ex) {
throw new MetaphaseEditorException(ex.getMessage(), ex);
}
}
}
}
}
@Override
public void actionPerformed(ActionEvent ae) {
JTextPane textPane = editorPanel.getHtmlTextPane();
HTMLDocument htmlDocument = (HTMLDocument) textPane.getDocument();
int start = textPane.getSelectionStart();
int end = textPane.getSelectionEnd();
addParagraphAttributes(htmlDocument, start, end);
addListItemAttributes(htmlDocument, start, end);
editorPanel.refreshAfterAction();
}
}