package org.catacomb.druid.swing;
   
   import org.catacomb.interlish.interact.DComponent;
   import org.catacomb.interlish.structure.HyperlinkHandler;
   import org.catacomb.interlish.structure.Page;
   import org.catacomb.interlish.util.JUtil;
   import org.catacomb.report.E;
   import org.catacomb.xdoc.XdocBase;
   
  
  import java.awt.Color;
  import java.awt.Graphics;
  import java.awt.Graphics2D;
  import java.awt.RenderingHints;
  import java.awt.Dimension;
  import java.io.StringReader;
  import java.net.URL;
  
  import javax.swing.JEditorPane;
  import javax.swing.event.HyperlinkEvent;
  import javax.swing.event.HyperlinkListener;
  import javax.swing.text.html.HTMLDocument;
  import javax.swing.text.html.HTMLEditorKit;
  import javax.swing.text.html.StyleSheet;
  
  
  public class DHTMLPane extends JEditorPane implements DComponent, HyperlinkListener {
      static final long serialVersionUID = 1001;
  
      HTMLEditorKit htmlEditorKit;
      StyleSheet styleSheet;
  
      static StyleSheet defaultStyleSheet;
  
  
      // String hexBgColor;
  
  
      HyperlinkHandler hyperlinkHandler;
  
  
      public DHTMLPane() {
          super();
          //  hexBgColor="#f0f0f0";
  
          //      setContentType("text/html");
          setEditable(false);
  
          htmlEditorKit = new HTMLEditorKit();
          setEditorKit(htmlEditorKit);
      }
  
      public void setPrefSize(int w, int h) {
          setPreferredSize(new Dimension(w, h));
      }
  
  
      protected void paintComponent(Graphics g) {
          Graphics2D g2 = (Graphics2D) g;
          g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                              RenderingHints.VALUE_ANTIALIAS_ON);
  
          super.paintComponent(g2);
      }
  
  
      public void setTooltip(String s) {
          setToolTipText(s);
      }
  
  
      public void setBg(Color c) {
          setBackground(c);
  
          // hexBgColor = ColorUtil.hexString(c);
  
          colorizeAndApplyStylesheet();
  
      }
  
  
      public void setDefaultStyleSheet() {
          if (defaultStyleSheet == null) {
              defaultStyleSheet = loadRelStyleSheet(new XdocBase(), "defaultCSS.txt");
          }
          setStyleSheet(defaultStyleSheet);
      }
  
  
      public void setStylesheetPath(String s) {
          String[] sa = s.split(":");
  
          String scss = JUtil.getFileResource(sa[0], sa[1]);
          StyleSheet styles = new StyleSheet();
          try {
              styles.loadRules(new StringReader(scss), null);
          } catch (Exception ex) {
              E.error("" + ex);
          }
         setStyleSheet(styles);
 
     }
 
 
     public void setRelStyleSheet(Object rel, String fnm) {
         StyleSheet ss = loadRelStyleSheet(rel, fnm);
         setStyleSheet(ss);
     }
 
 
 
 
 
     public void clearHyperlinkListeners() {
         for (HyperlinkListener hl : getHyperlinkListeners()) {
             removeHyperlinkListener(hl);
         }
     }
 
     /*
     int i = 0; i < hla.length; i++) {
      removeHyperlinkListener(hla[i]);
        }
     }
     */
 
 
     public void setHyperlinkHandler(HyperlinkHandler lh) {
         hyperlinkHandler = lh;
 
         addHyperlinkListener(this);
 
     }
 
 
 
     private StyleSheet loadRelStyleSheet(Object ref, String fnm) {
         // cache in static hash map?? EFF
         String scss = JUtil.getRelativeResource(ref, fnm);
         StyleSheet styles = new StyleSheet();
         try {
             styles.loadRules(new StringReader(scss), null);
         } catch (Exception ex) {
             E.error("" + ex);
         }
         return styles;
     }
 
 
     public void setStyleSheet(StyleSheet ss) {
         styleSheet = ss;
         colorizeAndApplyStylesheet();
     }
 
 
     public void colorizeAndApplyStylesheet() {
         if (styleSheet != null) {
 
             /* NB this doesnt work - attribute color is null for some reason;
             StyleContext.NamedStyle style = (StyleContext.NamedStyle)(styleSheet.getStyle("body"));
             // styleSheet.removeStyle("body");
             //  style.removeAttribute("background-color");
 
              Enumeration<?> atts = style.getAttributeNames();
              while (atts.hasMoreElements()) {
                 E.info("att name " + atts.nextElement());
              }
             E.info(style.toString() + " " + style.getAttribute("color"));
             //style.addAttribute("background-color", java.awt.Color.red); // hexBgColor);
              // styleSheet.addStyle("body", style);
               */
 
             htmlEditorKit.setStyleSheet(styleSheet);
         }
     }
 
     public void showPage(Page page) {
         showHTML(page.getHTMLText());
     }
 
 
 
     public void showHTML(String s) {
         HTMLDocument doc = new HTMLDocument(styleSheet);
         try {
             htmlEditorKit.read(new StringReader(s), doc, 0);
         } catch (Exception ex) {
 
         }
 
         setDocument(doc);
 
         /*
         StyleSheet styles = doc.getStyleSheet();
         E.info("doc ss " + styles.hashCode() + "   src ss " + styleSheet.hashCode());
 
         E.info("doc ek " + htmlEditorKit.hashCode() + "   src ek " + getEditorKit().hashCode());
         */
     }
 
 
 
     public void hyperlinkUpdate(HyperlinkEvent e) {
         if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
             String s = e.getDescription();
             URL u = e.getURL();
             if (u != null) {
                 hyperlinkHandler.hyperlinkClicked(u.toString());
             } else {
                 hyperlinkHandler.hyperlinkClicked(s);
             }
 
         } else if (e.getEventType() == HyperlinkEvent.EventType.ENTERED) {
 
         } else if (e.getEventType() == HyperlinkEvent.EventType.EXITED) {
 
         }
     }
 
 
 }