/**
* Remove the EditorIcons defined for the entity.
*
* @param entity The entity.
* @return true if at least one EditorIcon is found and removed; false otherwise.
* @exception KernelException If error occurs while removing the EditorIcons.
*/
private static boolean _removeEditorIcons(GTEntity entity) throws KernelException {
NamedObj object = (NamedObj) entity;
boolean foundPersistentIcon = false;
try {
object.workspace().getReadAccess();
for (Object iconObject : object.attributeList(EditorIcon.class)) {
EditorIcon icon = (EditorIcon) iconObject;
if (icon.isPersistent()) {
foundPersistentIcon = true;
} else {
icon.setContainer(null);
}
}
} finally {
object.workspace().doneReading();
}
return !foundPersistentIcon;
}
/**
* Check whether the attribute is unique in the given container.
*
* @param attribute The attribute to check.
* @param container The container.
* @exception IllegalActionException If the container already has an attribute in the same class.
*/
public static void checkUniqueness(Attribute attribute, NamedObj container)
throws IllegalActionException {
if (container instanceof EntityLibrary) {
return;
}
try {
container.workspace().getReadAccess();
List<? extends Attribute> attributeList = container.attributeList(attribute.getClass());
for (Attribute existingAttribute : attributeList) {
if (existingAttribute != attribute && existingAttribute.isPersistent()) {
_delete(attribute);
throw new IllegalActionException(
"Only 1 " + attribute.getClass().getSimpleName() + " can be used.");
}
}
} finally {
container.workspace().doneReading();
}
}
/**
* Update the appearance (icons and ports) of the entity with the change in a
* GTIngredientAttribute, such as a criterion or an operation.
*
* @param entity The entity.
* @param attribute The attribute whose recent change leads to an update of the entity.
*/
public static void updateAppearance(final GTEntity entity, GTIngredientsAttribute attribute) {
NamedObj object = (NamedObj) entity;
Workspace workspace = object.workspace();
try {
workspace.getWriteAccess();
List<?> icons = object.attributeList(EditorIcon.class);
boolean foundPersistentIcon = false;
for (Object iconObject : icons) {
EditorIcon icon = (EditorIcon) iconObject;
if (icon.isPersistent()) {
foundPersistentIcon = true;
break;
}
}
Set<String> preservedPortNames = new HashSet<String>();
boolean isIconSet = false;
int i = 1;
GTIngredientList list = attribute.getIngredientList();
for (GTIngredient ingredient : list) {
if (ingredient instanceof PortCriterion) {
PortCriterion criterion = (PortCriterion) ingredient;
String portID = criterion.getPortID(list);
preservedPortNames.add(portID);
TypedIOPort port = (TypedIOPort) ((ComponentEntity) entity).getPort(portID);
boolean isInput = criterion.isInput();
boolean isOutput = criterion.isOutput();
boolean isMultiport = !criterion.isMultiportEnabled() || criterion.isMultiport();
if (port != null) {
if (port instanceof PortMatcher) {
port.setInput(isInput);
port.setOutput(isOutput);
} else {
MoMLChangeRequest request =
new MoMLChangeRequest(
entity, object, "<deletePort name=\"" + port.getName() + "\"/>");
request.setUndoable(true);
request.setMergeWithPreviousUndo(true);
request.execute();
port =
new PortMatcher(criterion, (ComponentEntity) entity, portID, isInput, isOutput);
port.setDerivedLevel(1);
}
} else {
port = new PortMatcher(criterion, (ComponentEntity) entity, portID, isInput, isOutput);
port.setDerivedLevel(1);
}
port.setMultiport(isMultiport);
} else if (ingredient instanceof SubclassCriterion && !isIconSet && !foundPersistentIcon) {
SubclassCriterion criterion = (SubclassCriterion) ingredient;
final String superclass = criterion.getSuperclass();
object.requestChange(
new ChangeRequest(entity, "Deferred load actor icon action.") {
protected void _execute() throws Exception {
_loadActorIcon(entity, superclass);
}
});
isIconSet = true;
}
i++;
}
if (!isIconSet && !foundPersistentIcon) {
object.requestChange(new RestoreAppearanceChangeRequest(entity));
}
ComponentEntity component = (ComponentEntity) entity;
try {
component.workspace().getReadAccess();
List<?> portList = new LinkedList<Object>(component.portList());
for (i = 0; i < portList.size(); i++) {
Port port = (Port) portList.get(i);
if (port instanceof PortMatcher && !preservedPortNames.contains(port.getName())) {
((PortMatcher) port)._setPortCriterion(null);
port.setContainer(null);
}
}
} finally {
component.workspace().doneReading();
}
} catch (KernelException e) {
throw new KernelRuntimeException(
e, "Cannot update appearance for " + "actor " + entity.getName() + ".");
} finally {
workspace.doneWriting();
}
}