/**
* Return a description of the workspace. The level of detail depends on the argument, which is an
* or-ing of the static final constants defined in the NamedObj class. If the contents are
* requested, then the items in the directory are also described. Zero, one or two brackets can be
* specified to surround the returned description. If one is specified it is the the leading
* bracket. This is used by derived classes that will append to the description. Those derived
* classes are responsible for the closing bracket. An argument other than 0, 1, or 2 is taken to
* be equivalent to 0.
*
* @param detail The level of detail.
* @param indent The amount of indenting.
* @param bracket The number of surrounding brackets (0, 1, or 2).
* @return A description of the workspace.
*/
protected synchronized String _description(int detail, int indent, int bracket) {
StringBuffer result = new StringBuffer(NamedObj._getIndentPrefix(indent));
if ((bracket == 1) || (bracket == 2)) {
result.append("{");
}
if ((detail & NamedObj.CLASSNAME) != 0) {
result.append(getClass().getName());
if ((detail & NamedObj.FULLNAME) != 0) {
result.append(" ");
}
}
if ((detail & NamedObj.FULLNAME) != 0) {
result.append(("{" + getFullName() + "}"));
}
if ((detail & NamedObj.CONTENTS) != 0) {
if ((detail & (NamedObj.CLASSNAME | NamedObj.FULLNAME)) != 0) {
result.append(" ");
}
result.append("directory {\n");
Enumeration enumeration = directory();
while (enumeration.hasMoreElements()) {
NamedObj obj = (NamedObj) enumeration.nextElement();
// If deep is not set, then zero-out the contents flag
// for the next round.
if ((detail & NamedObj.DEEP) == 0) {
detail &= ~NamedObj.CONTENTS;
}
result.append((obj._description(detail, indent + 1, 2) + "\n"));
}
result.append("}");
}
if (bracket == 2) {
result.append("}");
}
return result.toString();
}
/**
* Add an item to the directory. The names of the objects in the directory are not required to be
* unique. Only items with no container can be added. Items with a container are still viewed as
* being within the workspace, but they are not explicitly listed in the directory. Instead, their
* top-level container is expected to be listed (although this is not enforced). Increment the
* version number.
*
* @param item Item to list in the directory.
* @exception IllegalActionException If the item has a container, is already in the directory, or
* is not in this workspace.
*/
public synchronized void add(NamedObj item) throws IllegalActionException {
if (item.workspace() != this) {
throw new IllegalActionException(
this, item, "Cannot add an item to the directory of a workspace " + "that it is not in.");
}
if (item.getContainer() != null) {
throw new IllegalActionException(
this, item, "Cannot add an object with a container to a workspace " + "directory.");
}
if (_directory.indexOf(item) >= 0) {
throw new IllegalActionException(
this, item, "Object is already listed in the workspace directory.");
}
_directory.add(item);
incrVersion();
}