@Override
public void modify(Object element, String property, Object value) {
// SWT bug workaround
if (element instanceof Item) {
element = ((Item) element).getData();
}
if (element instanceof String[]) {
String[] elts = (String[]) element;
String propertyName = elts[0].toString();
String oldValue = null;
if (elts[1] != null) {
oldValue = elts[1].toString();
}
String newValue = null;
if (value != null) {
newValue = value.toString();
}
if (oldValue == null && newValue == null) {
// Do nothing
} else if (oldValue != null && newValue == null) {
XArchADTOperations.set("Set", xarch, ref, propertyName, null);
} else if (oldValue == null && newValue != null) {
set(propertyName, newValue);
} else {
// Both non-null:
if (!oldValue.equals(newValue)) {
set(propertyName, newValue);
}
}
}
}
private void set(String featureName, String stringValue) {
IXArchADTTypeMetadata typeMetadata = xarch.getTypeMetadata(ref);
IXArchADTFeature feature = typeMetadata.getFeatures().get(featureName);
if (feature != null) {
try {
// If the feature is an enumeration type, then xarch.set will
// automatically try to convert it to an enum and throw
// IllegalArgumentException if it's not a valid value.
XArchADTOperations.set("Set", xarch, ref, featureName, stringValue);
} catch (IllegalArgumentException iae) {
MessageBox messageBox = new MessageBox(parent.getShell(), SWT.OK | SWT.ICON_ERROR);
messageBox.setMessage("Invalid value for this field.");
messageBox.setText("Error");
messageBox.open();
}
} else {
throw new RuntimeException("This shouldn't happen.");
}
}