/**
* Unregisters <code>dockable</code>, the associated controller will no longer support drag and
* drop for <code>dockable</code>.<br>
* Clients and subclasses should not call this method.
*
* @param dockable the element to remove
*/
protected void unregister(Dockable dockable) {
if (dockables.remove(dockable)) {
dockable.setController(null);
fireDockableUnregistered(dockable);
}
}
/**
* Registers <code>dockable</code>, the associated controller will know the titles of <code>
* dockable</code> to allow drag and drop operations.<br>
* Clients and subclasses should not call this method.
*
* @param dockable a new Dockable
*/
protected void register(Dockable dockable) {
if (!dockables.contains(dockable)) {
fireDockableRegistering(dockable);
dockables.add(dockable);
dockable.setController(controller);
fireDockableRegistered(dockable);
}
}