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

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