archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/bookmark/QuickListNode.java

   1 package com.quantum.view.bookmark;
   2
   3 import java.beans.PropertyChangeEvent;
   4 import java.beans.PropertyChangeListener;
   5 import java.util.ArrayList;
   6 import java.util.Collections;
   7 import java.util.Hashtable;
   8 import java.util.List;
   9 import java.util.Map;
  10
  11 import com.quantum.Messages;
  12 import com.quantum.model.Bookmark;
  13 import com.quantum.model.Entity;
  14
  15 /**
  16  * <p>A "quick list" is a set of favourite entities that a user may want
  17  * to work with without having to sift through the (somtimes lengthy) longer
  18  * list of tables.</p>
  19  *
  20  * @author bcholmes
  21  */
  22 public class QuickListNode extends TreeNode implements PropertyChangeListener {
  23
  24     private Map children = new Hashtable();
  25
  26     /**
  27      * @param parent
  28      */
  29     public QuickListNode(BookmarkNode parent) {
  30         super(parent);
  31
  32         Bookmark bookmark = getBookmark();
  33         bookmark.addPropertyChangeListener(this);
  34     }
  35
  36     /**
  37      * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
  38      */
  39     public void propertyChange(PropertyChangeEvent event) {
  40         if ("quickList".equals(event.getPropertyName())) {
  41             initializeChildren();
  42             firePropertyChange("quickList", null, null);
  43         }
  44     }
  45
  46     /**
  47      * @see com.quantum.view.bookmark.TreeNode#hasChildren()
  48      */
  49     public boolean hasChildren() {
  50         return getBookmark().hasQuickList();
  51     }
  52     /**
  53      * @see com.quantum.view.bookmark.TreeNode#getImageName()
  54      */
  55     protected String getImageName() {
  56         return "group.gif";
  57     }
  58
  59     /**
  60      * @see com.quantum.view.bookmark.TreeNode#getChildren()
  61      */
  62     public Object[] getChildren() {
  63         Bookmark bookmark = getBookmark();
  64         if (children.isEmpty() && bookmark.hasQuickList()) {
  65             initializeChildren();
  66         }
  67         List list = new ArrayList(this.children.values());
  68         Collections.sort(list);
  69
  70         return (TreeNode[]) list.toArray(new TreeNode[list.size()]);
  71     }
  72
  73     /**
  74      * @see com.quantum.view.bookmark.TreeNode#getName()
  75      */
  76     public String getName() {
  77         return Messages.getString(QuickListNode.class.getName() + ".labelName");
  78     }
  79
  80     protected synchronized void initializeChildren() {
  81         this.children.clear();
  82         Entity[] entities = getBookmark().getQuickListEntries();
  83         for (int i = 0, length = (entities == null) ? 0 : entities.length;
  84             i < length;
  85             i++) {
  86
  87             this.children.put(entities[i].getCondQualifiedName(),
  88                 new EntityNode(this, entities[i], true));
  89         }
  90     }
  91     /* (non-Javadoc)
  92      * @see com.quantum.view.bookmark.TreeNode#isInitialized()
  93      */
  94     protected boolean isInitialized() {
  95         return true;
  96     }
  97
  98 }