plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/launch/MachineDebugContextListener.java

   1 package net.mograsim.plugin.launch;
   2
   3 import java.util.Optional;
   4
   5 import org.eclipse.debug.core.ILaunch;
   6 import org.eclipse.debug.core.model.IDebugTarget;
   7 import org.eclipse.debug.ui.contexts.DebugContextEvent;
   8 import org.eclipse.debug.ui.contexts.IDebugContextListener;
   9 import org.eclipse.jface.viewers.ISelection;
  10 import org.eclipse.jface.viewers.TreeSelection;
  11
  12 public abstract class MachineDebugContextListener implements IDebugContextListener
  13 {
  14         private MachineDebugTarget debugTarget;
  15
  16         @Override
  17         public void debugContextChanged(DebugContextEvent e)
  18         {
  19                 debugContextChanged(e.getContext());
  20         }
  21
  22         public void debugContextChanged(ISelection selection)
  23         {
  24                 if (selection != null && selection instanceof TreeSelection)
  25                 {
  26                         TreeSelection treeSelection = (TreeSelection) selection;
  27                         Object[] selectedElements = treeSelection.toArray();
  28                         for (Object selectedElement : selectedElements)
  29                         {
  30                                 MachineDebugTarget debugTarget;
  31                                 if (selectedElement instanceof MachineDebugTarget)
  32                                         debugTarget = (MachineDebugTarget) selectedElement;
  33                                 else if (selectedElement instanceof ILaunch)
  34                                 {
  35                                         ILaunch launch = (ILaunch) selectedElement;
  36                                         IDebugTarget genericDebugTarget = launch.getDebugTarget();
  37                                         if (genericDebugTarget instanceof MachineDebugTarget)
  38                                                 debugTarget = (MachineDebugTarget) genericDebugTarget;
  39                                         else
  40                                                 continue;
  41                                 } else
  42                                         continue;
  43                                 if (debugTarget.isTerminated())
  44                                         continue;
  45                                 // we found a selected MachineDebugTarget
  46                                 if (this.debugTarget != debugTarget)
  47                                 {
  48                                         MachineDebugTarget oldTarget = this.debugTarget;
  49                                         this.debugTarget = debugTarget;
  50                                         machineDebugContextChanged(Optional.ofNullable(oldTarget), Optional.of(debugTarget));
  51                                 }
  52                                 return;
  53                         }
  54                         MachineDebugTarget oldTarget = debugTarget;
  55                         debugTarget = null;
  56                         machineDebugContextChanged(Optional.ofNullable(oldTarget), Optional.empty());
  57                 }
  58         }
  59
  60         public abstract void machineDebugContextChanged(Optional<MachineDebugTarget> oldTarget, Optional<MachineDebugTarget> newTarget);
  61 }