plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/RowHighlighter.java

   1 package net.mograsim.plugin.tables.mi;
   2
   3 import java.util.Optional;
   4
   5 import org.eclipse.swt.widgets.Table;
   6
   7 import net.mograsim.plugin.tables.LazyTableViewer;
   8 import net.mograsim.plugin.util.SingleSWTRequest;
   9
  10 public class RowHighlighter
  11 {
  12         private int highlighted = -1;
  13         private LazyTableViewer viewer;
  14         private ColorProvider cProv;
  15         private SingleSWTRequest requester = new SingleSWTRequest();
  16
  17         public RowHighlighter(LazyTableViewer viewer, ColorProvider cProv)
  18         {
  19                 this.viewer = viewer;
  20                 this.cProv = cProv;
  21         }
  22
  23         public void highlight(int row)
  24         {
  25                 requester.request(() ->
  26                 {
  27                         if (!viewer.getTable().isDisposed())
  28                                 innerHighlight(row);
  29                 });
  30         }
  31
  32         private void innerHighlight(int row)
  33         {
  34                 Table table = viewer.getTable();
  35                 cProv.highlight(row);
  36                 if (row != -1)
  37                 {
  38                         table.showItem(table.getItem(Math.min(table.getItemCount(), row + 2)));
  39                         table.showItem(table.getItem(row));
  40                         Optional.ofNullable(table.getItem(row).getData()).ifPresent(d -> viewer.update(d, null));
  41                 }
  42                 if (highlighted != -1)
  43                         Optional.ofNullable(table.getItem(highlighted).getData()).ifPresent(d -> viewer.update(d, null));
  44                 highlighted = row;
  45         }
  46 }