ekit/com/hexidec/ekit/component/ExtendedHTMLEditorKit.java

   1 /*
   2 GNU Lesser General Public License
   3
   4 ExtendedHTMLEditorKit
   5 Copyright (C) 2001-2002  Frits Jalvingh & Howard Kistler
   6
   7 This library is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU Lesser General Public
   9 License as published by the Free Software Foundation; either
  10 version 2.1 of the License, or (at your option) any later version.
  11
  12 This library is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 Lesser General Public License for more details.
  16
  17 You should have received a copy of the GNU Lesser General Public
  18 License along with this library; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20 */
  21
  22 package com.hexidec.ekit.component;
  23
  24 import javax.swing.text.Element;
  25 import javax.swing.text.StyleConstants;
  26 import javax.swing.text.View;
  27 import javax.swing.text.ViewFactory;
  28 import javax.swing.text.html.HTML;
  29 import javax.swing.text.html.HTMLEditorKit;
  30
  31 /* WACKY GERMAN CODE */
  32 import com.hexidec.ekit.component.ExtendedHTMLDocument;
  33 import javax.swing.text.html.StyleSheet;
  34 import javax.swing.text.Document;
  35
  36 /**
  37   * This class extends HTMLEditorKit so that it can provide other renderer classes
  38   * instead of the defaults. Most important is the part which renders relative
  39   * image paths.
  40   *
  41   * @author <a href="mailto:jal@grimor.com">Frits Jalvingh</a>
  42   * @version 1.0
  43   */
  44
  45 public class ExtendedHTMLEditorKit extends HTMLEditorKit
  46 {
  47         /** Constructor
  48           */
  49         public ExtendedHTMLEditorKit()
  50         {
  51         }
  52
  53         /** Method for returning a ViewFactory which handles the image rendering.
  54           */
  55         public ViewFactory getViewFactory()
  56         {
  57                 return new HTMLFactoryExtended();
  58         }
  59
  60 /* WACKY GERMAN CODE */
  61         public Document createDefaultDocument() {
  62           StyleSheet styles = getStyleSheet();
  63           StyleSheet ss = new StyleSheet();
  64           ss.addStyleSheet(styles);
  65           ExtendedHTMLDocument doc = new ExtendedHTMLDocument(ss);
  66           doc.setParser(getParser());
  67           doc.setAsynchronousLoadPriority(4);
  68           doc.setTokenThreshold(100);
  69           return doc;
  70         }
  71
  72 /* Inner Classes --------------------------------------------- */
  73
  74         /** Class that replaces the default ViewFactory and supports
  75           * the proper rendering of both URL-based and local images.
  76           */
  77         public static class HTMLFactoryExtended extends HTMLFactory implements ViewFactory
  78         {
  79                 /** Constructor
  80                   */
  81                 public HTMLFactoryExtended()
  82                 {
  83                 }
  84
  85                 /** Method to handle IMG tags and
  86                   * invoke the image loader.
  87                   */
  88                 public View create(Element elem)
  89                 {
  90                         Object obj = elem.getAttributes().getAttribute(StyleConstants.NameAttribute);
  91                         if(obj instanceof HTML.Tag)
  92                         {
  93                                 HTML.Tag tagType = (HTML.Tag)obj;
  94                                 if(tagType == HTML.Tag.IMG)
  95                                 {
  96                                         return new RelativeImageView(elem);
  97                                 }
  98                         }
  99                         return super.create(elem);
 100                 }
 101         }
 102 }