private TransactionSettings processCanUndoDelete(TransactionSettings ts) {
boolean bCanUndoDelete = false;
Object selection = getSelection();
if (selection instanceof ISelection) {
ISelection iSelection = (ISelection) selection;
if (!iSelection.isEmpty() && !isReadOnly() && canLegallyEditResource()) {
if (SelectionUtilities.isSingleSelection(iSelection)) {
Object o = SelectionUtilities.getSelectedEObject(iSelection);
bCanUndoDelete = (o != null && ModelObjectEditHelperManager.canUndoCut(o));
} else if (SelectionUtilities.isMultiSelection(iSelection)) {
List sourceEObjects = SelectionUtilities.getSelectedEObjects(iSelection);
bCanUndoDelete = true;
if (sourceEObjects.size() > 0) {
bCanUndoDelete = ModelObjectEditHelperManager.canUndoCut(sourceEObjects);
}
}
ts.setIsUndoable(bCanUndoDelete);
}
}
return ts;
}
private TransactionSettings processDescription(TransactionSettings ts) {
ts.setDescription(getUndoText(getSelectedEObjects()));
return ts;
}
private void executeCommand(
final ObjectDeleteCommand odcDeleteCommand,
final EObject[] eObjects,
TransactionSettings ts) {
if (odcDeleteCommand == null) {
createObjectDeleteCommand();
}
String tempString = UiConstants.Util.getString(DELETE_ONE_TITLE_KEY);
if (eObjects.length > 1) {
tempString = UiConstants.Util.getString(DELETE_MANY_TITLE_KEY, eObjects.length);
}
final String deleteTitle = tempString;
WorkspaceModifyOperation operation =
new WorkspaceModifyOperation() {
@Override
public void execute(final IProgressMonitor monitor) {
if (monitor instanceof SubProgressMonitor) {
((SubProgressMonitor) monitor).getWrappedProgressMonitor().setTaskName(deleteTitle);
}
monitor.beginTask(CoreStringUtil.Constants.EMPTY_STRING, 100);
monitor.worked(5);
// execute the command
IStatus status = odcDeleteCommand.execute(monitor);
setResult(status);
}
};
// start the txn
ts.setSource(this);
boolean started =
ModelerCore.startTxn(
ts.isSignificant(), ts.isUndoable(), ts.getDescription(), ts.getSource());
boolean succeeded = false;
try {
ProgressMonitorDialog progressDialog =
new ProgressMonitorDialog(Display.getDefault().getActiveShell());
// run the operation
progressDialog.run(true, true, operation);
if (!progressDialog.getProgressMonitor().isCanceled()) {
succeeded = true;
}
if (!getStatus().isOK()) {
UiConstants.Util.log(getStatus());
}
} catch (Exception e) {
UiConstants.Util.log(IStatus.ERROR, e, e.getMessage());
} finally {
if (started) {
if (succeeded) {
ModelerCore.commitTxn();
} else {
ModelerCore.rollbackTxn();
}
}
}
}
