/**
* Gets a list of stations which have no parent and are therefore the roots of the dock-trees.
*
* @return the roots
*/
public DockStation[] listRoots() {
List<DockStation> list = new LinkedList<DockStation>();
for (DockStation station : stations) {
Dockable dockable = station.asDockable();
if (dockable == null || dockable.getDockParent() == null) list.add(station);
}
return list.toArray(new DockStation[list.size()]);
}
/**
* Removes a station which was managed by this register.
*
* @param station the station to remove
*/
public void remove(DockStation station) {
if (stations.contains(station)) {
setProtected(station, false);
Dockable dock = station.asDockable();
if (dock != null) {
DockStation parent = dock.getDockParent();
if (parent != null) parent.drag(dock);
}
DockUtilities.visit(
station,
new DockUtilities.DockVisitor() {
private Set<DockStation> ignored = new HashSet<DockStation>();
@Override
public void handleDockable(Dockable dockable) {
DockStation station = dockable.asDockStation();
if (station == null || !isProtected(station)) {
for (DockStation parent : ignored) {
if (DockUtilities.isAncestor(parent, dockable)) {
return;
}
}
unregister(dockable);
}
}
@Override
public void handleDockStation(DockStation station) {
if (isProtected(station)) {
ignored.add(station);
} else {
unregister(station);
}
}
});
}
}
private void checkDockable() {
if (!onChange) {
try {
onChange = true;
if (isSelected()) {
DockController controller = dockable.getController();
if (controller != null) {
controller.setFocusedDockable(dockable, null, true, true, true);
}
} else {
DockStation parent = this.parent;
Dockable dockable = this.dockable;
DockStation finalParent = StationChildrenActionSource.this.dockable.getDockParent();
while (parent != null) {
if (parent.getFrontDockable() == dockable) {
parent.setFrontDockable(null);
}
if (parent == finalParent) {
parent = null;
} else {
dockable = parent.asDockable();
if (dockable != null) {
parent = dockable.getDockParent();
} else {
parent = null;
}
}
}
}
} finally {
onChange = false;
}
}
}
public void replace(DockStation old, Dockable next) {
replace(old.asDockable(), next);
}