public boolean removeModelElement(ModelElement e) {
if (e instanceof Activity) {
Activity a = (Activity) e;
Collection links = ApesMediator.getInstance().getLinks(mFlowDiagram, getOwner());
if (getOwner() != null && !contains(links, a)) {
if (getOwner() != null && getOwner().containsFeature(a)) {
getOwner().removeFeature(a);
}
a.setOwner(null);
}
return removeSubWork((Activity) e);
}
if (e instanceof FlowDiagram && mFlowDiagram == (FlowDiagram) e) {
return removeFlowDiagram();
}
if (e instanceof ActivityDiagram && mActivityDiagram == (ActivityDiagram) e) {
return removeActivityDiagram();
}
return false;
}
public boolean addModelElement(ModelElement e) {
if (e instanceof Activity) {
Activity a = (Activity) e;
if (addSubWork(a)) {
if (a.getOwner() == null && getOwner() != null) {
if (getOwner() != null && !getOwner().containsFeature(a)) {
getOwner().addFeature(a);
}
a.setOwner(getOwner());
}
return true;
}
return false;
}
if (e instanceof FlowDiagram) {
return addFlowDiagram((FlowDiagram) e);
}
if (e instanceof ActivityDiagram) {
return addActivityDiagram((ActivityDiagram) e);
}
return false;
}