/** Adds a new constraint. */
private void addConstraint() {
IDecisionVariable variable = getVariable();
ConstraintEditorDialog dlg = new ConstraintEditorDialog(getShell(), variable, null);
if (ConstraintEditorDialog.OK == dlg.open()) {
String constraint = dlg.getConstraintText();
if (constraint.length() > 0) {
try {
if (null == variableValue) {
variableValue =
(ContainerValue)
ValueFactory.createValue(
variable.getDeclaration().getType(), ValueFactory.EMPTY);
variable.setValue(variableValue, AssignmentState.ASSIGNED);
}
if (null != variableValue) {
Value val = createConstraintValue(constraint);
checkForDuplicates(val, -1);
variableValue.addElement(val);
TableItem item = new TableItem(tableViewer.getTable(), SWT.NULL);
item.setText(constraint);
setDirty();
}
} catch (ValueDoesNotMatchTypeException e) {
exceptionDialog(e);
} catch (ConfigurationException e) {
exceptionDialog(e);
}
}
}
}
/**
* Creates an editor instance.
*
* @param config the UI configuration
* @param variable the variable to edit
* @param parent the parent composite
*/
private ConstraintsEditor(UIConfiguration config, IDecisionVariable variable, Composite parent) {
super(config, variable, parent, SWT.NULL);
this.config = config;
setLayout(new FillLayout());
tableViewer = setTableViewer(createTableViewer(this, true));
IDatatype type = DerivedDatatype.resolveToBasis(variable.getDeclaration().getType());
if (1 == type.getGenericTypeCount()) {
IDatatype contained = type.getGenericType(0);
if (ConstraintType.TYPE.isAssignableFrom(contained)) {
Value val = variable.getValue();
if (val instanceof ContainerValue) {
variableValue = (ContainerValue) val;
fillTable(toConstraints((ContainerValue) val), tableViewer);
}
}
}
tableViewer.addDoubleClickListener(
new IDoubleClickListener() {
@Override
public void doubleClick(DoubleClickEvent event) {
// IStructuredSelection does not work well until content provider is used
if (tableViewer == event.getSource()) {
editSelectedConstraint();
}
}
});
manager = new MenuManager();
tableViewer.getControl().setMenu(manager.createContextMenu(tableViewer.getControl()));
manager.add(
new Action("Add constraint", null) {
@Override
public void run() {
addConstraint();
}
});
manager.add(
new Action("Remove constraint", null) {
@Override
public void run() {
removeSelectedConstraint();
}
});
}