// Create a decorated field with a required field decoration.
DecoratedField flowField = new DecoratedField(nameGroup, SWT.SINGLE | SWT.BORDER,
new TextControlCreator());
FieldDecoration requiredFieldIndicator = FieldDecorationRegistry.getDefault()
.getFieldDecoration(FieldDecorationRegistry.DEC_CONTENT_PROPOSAL);
flowField.addFieldDecoration(requiredFieldIndicator, SWT.TOP | SWT.LEFT, true);
flowText = (Text) flowField.getControl();
GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
flowField.getLayoutControl().setLayoutData(data);
if (this.state != null && this.state.getFlow() != null) {
this.flowText.setText(this.state.getFlow());