org.argeo.slc.client.ui.dist/src/org/argeo/slc/client/ui/dist/controllers/DistTreeComparer.java

   1 package org.argeo.slc.client.ui.dist.controllers;
   2
   3 import org.argeo.eclipse.ui.TreeParent;
   4 import org.eclipse.jface.viewers.IElementComparer;
   5
   6 /** Compares two elements of the Distribution tree */
   7 public class DistTreeComparer implements IElementComparer {
   8
   9         public int hashCode(Object element) {
  10                 if (element instanceof TreeParent)
  11                         return ((TreeParent) element).hashCode();
  12                 else
  13
  14                         return element.getClass().toString().hashCode();
  15         }
  16
  17         public boolean equals(Object elementA, Object elementB) {
  18                 if (!(elementA instanceof TreeParent)
  19                                 || !(elementB instanceof TreeParent)) {
  20                         return elementA == null ? elementB == null : elementA
  21                                         .equals(elementB);
  22                 } else {
  23                         TreeParent tpA = ((TreeParent) elementA);
  24                         TreeParent tpB = ((TreeParent) elementB);
  25                         return tpA.compareTo(tpB) == 0;
  26                 }
  27         }
  28 }