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

   1 /*
   2  * $Id: TableElementCellModifier.java,v 1.1 2004-10-05 20:51:57 jsurfer 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.*;
  10 import org.eclipse.jface.viewers.ICellModifier;
  11 import org.eclipse.swt.widgets.Item;
  12 import org.w3c.dom.*;
  13
  14 /**
  15  *
  16  */
  17 public class TableElementCellModifier implements ICellModifier {
  18
  19         DocumentBuilderFactory builderFactory;
  20         IPropertyChangeListener listener;
  21
  22         public TableElementCellModifier(IPropertyChangeListener listener) {
  23                 builderFactory = DocumentBuilderFactory.newInstance();
  24                 this.listener = listener;
  25         }
  26
  27         public boolean canModify(Object element, String property) {
  28                 return getValue(element, property) != null;
  29         }
  30
  31         public Object getValue(Object trElem, String property) {
  32                 if(trElem instanceof Element){
  33                         Element e = (Element)trElem;
  34                         if( e.getNodeName().equals("tr") ){
  35                                 int v = TableElementModel.toNumeric(property);
  36                                 Element[] cells = TableElementModel.chooseCellElements(e);
  37                                 if(v >= 0 && v < cells.length){
  38                                         NodeList nodes = cells[v].getChildNodes();
  39                                         if(nodes.getLength() == 1){
  40                                                 Node n = nodes.item(0);
  41                                                 if(n instanceof Text){
  42                                                         return n.getNodeValue();
  43                                                 }
  44                                         }
  45                                 }
  46                         }
  47                 }
  48                 return null;
  49         }
  50
  51         public void modify(Object element, String property, Object value) {
  52                 if (element instanceof Item) {
  53                         element = ((Item) element).getData();
  54                 }
  55                 Element trElem =  (Element)element;
  56                 int index = TableElementModel.toNumeric(property);
  57                 Element cellElem = TableElementModel.chooseCellElements(trElem)[index];
  58
  59                 NodeList nodes = cellElem.getChildNodes();
  60                 for(int i=0; i<nodes.getLength(); i++){
  61                         cellElem.removeChild( nodes.item(i) );
  62                 }
  63                 Document doc = cellElem.getOwnerDocument();
  64
  65                 if( value instanceof String){
  66                         cellElem.appendChild(doc.createTextNode((String)value));
  67                 }
  68                 // notify listener
  69                 if(listener != null){
  70                         String oldValue = nodes.item(0).getNodeValue();
  71                         listener.propertyChange(new PropertyChangeEvent(this, property, (String)value, oldValue));
  72                 }
  73         }
  74
  75 }