/**
 * 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.util.Iterator;
import java.util.Map;

import javax.swing.JTextPane;
import javax.swing.text.Element;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;

import com.metaphaseeditor.MetaphaseEditorPanel;

public class FormatAction extends StyledEditorKit.StyledTextAction {

	private HTML.Tag htmlTag;
	private Map<String, String> attributes;
	private MetaphaseEditorPanel editorPanel;

	public FormatAction(MetaphaseEditorPanel editorPanel, String actionName, HTML.Tag htmlTag) {
		super(actionName);
		this.editorPanel = editorPanel;
		this.htmlTag = htmlTag;
		attributes = null;
	}

	public FormatAction(MetaphaseEditorPanel editorPanel, String actionName, HTML.Tag htmlTag, Map<String, String> attributes) {
		super(actionName);
		this.editorPanel = editorPanel;
		this.htmlTag = htmlTag;
		this.attributes = attributes;
	}

	public FormatAction(MetaphaseEditorPanel editorPanel, String actionName, Map<String, String> attributes) {
		super(actionName);
		this.editorPanel = editorPanel;
		htmlTag = null;
		this.attributes = attributes;
	}

	@Override
	public void actionPerformed(ActionEvent ae) {
		JTextPane textPane = editorPanel.getHtmlTextPane();
		HTMLDocument htmlDocument = (HTMLDocument) textPane.getDocument();

		int start = textPane.getSelectionStart();
		int end = textPane.getSelectionEnd();

		Element element = htmlDocument.getParagraphElement(start);
		MutableAttributeSet newAttrs = new SimpleAttributeSet(element.getAttributes());
		if (htmlTag != null) {
			newAttrs.addAttribute(StyleConstants.NameAttribute, htmlTag);
		}
		if (attributes != null) {
			Iterator iterator = attributes.entrySet().iterator();
			while (iterator.hasNext()) {
				Map.Entry entry = (Map.Entry) iterator.next();
				newAttrs.addAttribute(entry.getKey(), entry.getValue());
			}
		}

		htmlDocument.setParagraphAttributes(start, end - start, newAttrs, true);
		editorPanel.refreshAfterAction();
	}
}