@Override
public IStatus undo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
InstallableUnitBuilder iu =
((InstallableUnitEditor) m_formPage.getEditor()).getInstallableUnit();
if (m_add) iu.removeArtifactKey(m_artifact);
else iu.addArtifactKey(m_artifact, m_index);
updatePageState(!m_add);
if (monitor != null) monitor.done();
return Status.OK_STATUS;
}
/**
* Method common to both add and remove. Operation can be undone.
*
* @param artifact what to add or remove
* @param add true if required should be added, false to remove
*/
private void addRemove(ArtifactKeyBuilder artifact, boolean add) {
FormToolkit toolkit = m_formPage.getManagedForm().getToolkit();
if (toolkit instanceof IUndoOperationSupport) {
AddRemoveOperation op = new AddRemoveOperation(artifact, add);
op.addContext(((IUndoOperationSupport) toolkit).getUndoContext());
try {
((IUndoOperationSupport) toolkit).getOperationHistory().execute(op, null, null);
} catch (ExecutionException e) {
// TODO Proper logging
e.printStackTrace();
}
} else {
// without undo support - just add it... (should not happen)
InstallableUnitBuilder iu =
((InstallableUnitEditor) m_formPage.getEditor()).getInstallableUnit();
iu.addArtifactKey(artifact);
}
}