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.concurrent.atomic.AtomicBoolean;
   4
   5 import org.eclipse.swt.widgets.Display;
   6 import org.eclipse.swt.widgets.Table;
   7
   8 import net.mograsim.plugin.tables.LazyTableViewer;
   9
  10 public class RowHighlighter
  11 {
  12         private int highlighted, toHighlight;
  13         private LazyTableViewer viewer;
  14         private AtomicBoolean waiting = new AtomicBoolean();
  15
  16         public RowHighlighter(LazyTableViewer viewer)
  17         {
  18                 this.viewer = viewer;
  19         }
  20
  21         public void highlight(int row)
  22         {
  23                 synchronized (waiting)
  24                 {
  25                         toHighlight = row;
  26                         if (!waiting.get())
  27                         {
  28                                 waiting.set(true);
  29                                 Display.getDefault().asyncExec(() ->
  30                                 {
  31                                         synchronized (waiting)
  32                                         {
  33                                                 waiting.set(false);
  34                                                 if (!viewer.getTable().isDisposed())
  35                                                         innerHighlight(toHighlight);
  36                                         }
  37                                 });
  38                         }
  39                 }
  40         }
  41
  42         private void innerHighlight(int row)
  43         {
  44                 viewer.highlightRow(highlighted, false);
  45                 highlighted = row;
  46                 if (row != -1)
  47                 {
  48                         viewer.highlightRow(row, true);
  49                         Table table = viewer.getTable();
  50                         table.showItem(table.getItem(Math.min(table.getItemCount(), row + 2)));
  51                         table.showItem(table.getItem(row));
  52                 }
  53         }
  54 }