@Override
			public void focusLost(FocusEvent e) {
				if (!dataTypeEditor.stopCellEditing()) {
					Msg.showError(this, dataTypeEditComponent, "Invalid Datatype",
						"Previous datatype restored, invalid data type specified: " +
							textField.getText());
					dataTypeEditor.getEditor().setCellEditorValue(variableData.getFormalDataType());
					textField.requestFocus();
				}
			}
Read-only use constructor for Help screenshot
@param program the program
@param service the data type manager service
@param var function parameter to be displayed in editor dialog
@param ordinal parameter ordinal (-1 for return)
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/editor/StorageAddressEditorDialog.java