plugins/org.argeo.slc.client.ui.dist/src/main/java/org/argeo/slc/client/ui/dist/controllers/DistTreeComparator.java

   1 package org.argeo.slc.client.ui.dist.controllers;
   2
   3 import org.argeo.slc.client.ui.dist.model.DistParentElem;
   4 import org.argeo.slc.client.ui.dist.model.ModularDistVersionElem;
   5 import org.argeo.slc.client.ui.dist.model.RepoElem;
   6 import org.argeo.slc.client.ui.dist.model.WkspGroupElem;
   7 import org.argeo.slc.client.ui.dist.model.WorkspaceElem;
   8 import org.eclipse.jface.viewers.Viewer;
   9 import org.eclipse.jface.viewers.ViewerComparator;
  10
  11 /** Specific comparator to enhance Distribution tree browsers */
  12 public class DistTreeComparator extends ViewerComparator {
  13
  14         public int category(Object element) {
  15                 if (element instanceof RepoElem)
  16                         if (((RepoElem) element).inHome())
  17                                 // Home repository always first
  18                                 return 2;
  19                         else
  20                                 return 5;
  21                 else if (element instanceof WkspGroupElem)
  22                         return 10;
  23                 else if (element instanceof WorkspaceElem)
  24                         return 15;
  25                 else
  26                         return 20;
  27         }
  28
  29         public int compare(Viewer viewer, Object e1, Object e2) {
  30                 int cat1 = category(e1);
  31                 int cat2 = category(e2);
  32
  33                 if (cat1 != cat2) {
  34                         return cat1 - cat2;
  35                 }
  36
  37                 String s1, s2;
  38
  39                 if (e1 instanceof DistParentElem) {
  40                         s1 = ((DistParentElem) e1).getName();
  41                         s2 = ((DistParentElem) e2).getName();
  42                 } else {
  43                         s1 = e1.toString();
  44                         s2 = e2.toString();
  45                 }
  46
  47                 if (e1 instanceof WorkspaceElem || e1 instanceof ModularDistVersionElem)
  48                         // Reverse order for versions
  49                         return s2.compareTo(s1);
  50                 else
  51                         return s1.compareTo(s2);
  52         }
  53 }