net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/wizards/html/TableElementCellModifier.java

   1 /*
   2  * $Id: TableElementCellModifier.java,v 1.2 2005-05-06 00:57:33 stefanbjarni Exp $
   3  * Copyright Narushima Hironori. All rights reserved.
   4  */
   5 package net.sourceforge.phpeclipse.wizards.html;
   6
   7 import javax.xml.parsers.DocumentBuilderFactory;
   8
   9 import org.eclipse.jface.util.IPropertyChangeListener;
  10 import org.eclipse.jface.util.PropertyChangeEvent;
  11 import org.eclipse.jface.viewers.ICellModifier;
  12 import org.eclipse.swt.widgets.Item;
  13 import org.w3c.dom.Document;
  14 import org.w3c.dom.Element;
  15 import org.w3c.dom.Node;
  16 import org.w3c.dom.NodeList;
  17 import org.w3c.dom.Text;
  18
  19 /**
  20  *
  21  */
  22 public class TableElementCellModifier implements ICellModifier {
  23
  24         DocumentBuilderFactory builderFactory;
  25         IPropertyChangeListener listener;
  26
  27         public TableElementCellModifier(IPropertyChangeListener listener) {
  28                 builderFactory = DocumentBuilderFactory.newInstance();
  29                 this.listener = listener;
  30         }
  31
  32         public boolean canModify(Object element, String property) {
  33                 return getValue(element, property) != null;
  34         }
  35
  36         public Object getValue(Object trElem, String property) {
  37                 if(trElem instanceof Element){
  38                         Element e = (Element)trElem;
  39                         if( e.getNodeName().equals("tr") ){
  40                                 int v = TableElementModel.toNumeric(property);
  41                                 Element[] cells = TableElementModel.chooseCellElements(e);
  42                                 if(v >= 0 && v < cells.length){
  43                                         NodeList nodes = cells[v].getChildNodes();
  44                                         if(nodes.getLength() == 1){
  45                                                 Node n = nodes.item(0);
  46                                                 if(n instanceof Text){
  47                                                         return n.getNodeValue();
  48                                                 }
  49                                         }
  50                                 }
  51                         }
  52                 }
  53                 return null;
  54         }
  55
  56         public void modify(Object element, String property, Object value) {
  57                 if (element instanceof Item) {
  58                         element = ((Item) element).getData();
  59                 }
  60                 Element trElem =  (Element)element;
  61                 int index = TableElementModel.toNumeric(property);
  62                 Element cellElem = TableElementModel.chooseCellElements(trElem)[index];
  63
  64                 NodeList nodes = cellElem.getChildNodes();
  65                 for(int i=0; i<nodes.getLength(); i++){
  66                         cellElem.removeChild( nodes.item(i) );
  67                 }
  68                 Document doc = cellElem.getOwnerDocument();
  69
  70                 if( value instanceof String){
  71                         cellElem.appendChild(doc.createTextNode((String)value));
  72                 }
  73                 // notify listener
  74                 if(listener != null){
  75                         String oldValue = nodes.item(0).getNodeValue();
  76                         listener.propertyChange(new PropertyChangeEvent(this, property, (String)value, oldValue));
  77                 }
  78         }
  79
  80 }