plugins/org.argeo.slc.client.ui.dist/src/main/java/org/argeo/slc/client/ui/dist/utils/ArtifactNamesComparator.java

   1 package org.argeo.slc.client.ui.dist.utils;
   2
   3 import org.argeo.eclipse.ui.TreeParent;
   4 import org.eclipse.jface.viewers.Viewer;
   5 import org.eclipse.jface.viewers.ViewerComparator;
   6
   7 /**
   8  * Enable comparison of two names with form org.argeo.slc-1.2.x
   9  */
  10
  11 public class ArtifactNamesComparator extends ViewerComparator {
  12
  13         @Override
  14         public int category(Object element) {
  15                 if (element instanceof String) {
  16                         int lastInd = ((String) element).lastIndexOf('-');
  17                         if (lastInd > 0)
  18                                 return 10;
  19                 }
  20                 // unvalid names always last
  21                 return 5;
  22         }
  23
  24         @Override
  25         public int compare(Viewer viewer, Object e1, Object e2) {
  26                 int cat1 = category(e1);
  27                 int cat2 = category(e2);
  28
  29                 if (cat1 != cat2) {
  30                         return cat1 - cat2;
  31                 }
  32
  33                 int result = 0;
  34
  35                 String s1, s2;
  36
  37                 if (e1 instanceof TreeParent) {
  38                         s1 = ((TreeParent) e1).getName();
  39                         s2 = ((TreeParent) e2).getName();
  40                 } else {
  41                         s1 = e1.toString();
  42                         s2 = e2.toString();
  43                 }
  44
  45
  46                 int i1 = s1.lastIndexOf('-');
  47                 int i2 = s2.lastIndexOf('-');
  48
  49
  50                 // Specific cases, unvalid Strings
  51                 if (i1 <0)
  52                         if (i2 <0)
  53                                 return s1.compareTo(s2);
  54                         else
  55                                 return 1;
  56                 else
  57                         if (i2 <0)
  58                                 return -1;
  59
  60                 String aPref = s1.substring(0, s1.lastIndexOf('-'));
  61                 String aSuf = s1.substring(s1.lastIndexOf('-'));
  62
  63                 String bPref = s2.substring(0, s2.lastIndexOf('-'));
  64                 String bSuf = s2.substring(s2.lastIndexOf('-'));
  65
  66                 result = aPref.compareTo(bPref);
  67                 if (result != 0)
  68                         return result;
  69                 else
  70                         return bSuf.compareTo(aSuf);
  71
  72         }
  73 }