bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/ViewerRowReference.java

   1 package org.simantics.browsing.ui.swt;
   2
   3 import org.eclipse.jface.viewers.ViewerCell;
   4 import org.eclipse.jface.viewers.ViewerRow;
   5 import org.simantics.browsing.ui.common.internal.UIElementReference;
   6
   7 public class ViewerRowReference implements UIElementReference{
   8
   9         private final Object element;
  10
  11         public static ViewerRowReference create(ViewerCell cell) {
  12                 return new ViewerRowReference(cell.getViewerRow());
  13         }
  14
  15         public static ViewerRowReference create(ViewerRow row) {
  16                 return new ViewerRowReference(row);
  17         }
  18
  19         public static ViewerRowReference create(Object element) {
  20                 return new ViewerRowReference(element);
  21         }
  22
  23         private ViewerRowReference(ViewerRow row) {
  24                 this.element = row.getElement();
  25         }
  26
  27         private ViewerRowReference(Object element) {
  28                 this.element = element;
  29         }
  30
  31         @Override
  32         public boolean hasReference() {
  33                 return element != null;
  34         }
  35
  36         @Override
  37         public boolean isDisposed() {
  38                 if (element == null)
  39                         return true;
  40                 return false;
  41         }
  42
  43         public Object getElement() {
  44                 return element;
  45         }
  46
  47         @Override
  48         public int hashCode() {
  49                 if (element != null)
  50                         return element.hashCode();
  51                 return 0;
  52         }
  53
  54         @Override
  55         public boolean equals(Object obj) {
  56                 if (obj == null)
  57                         return false;
  58                 if (obj.getClass() != getClass())
  59                         return false;
  60                 if (element == null)
  61                         return false;
  62                 ViewerRowReference other = (ViewerRowReference)obj;
  63                 return element.equals(other.element);
  64         }
  65 }