public void readExternal(Element element) throws InvalidDataException {
List<Element> subPanes = element.getChildren(ELEMENT_SUBPANE);
for (Element subPane : subPanes) {
String subId = subPane.getAttributeValue(ATTRIBUTE_SUBID);
TreeState treeState = new TreeState();
treeState.readExternal(subPane);
myReadTreeState.put(subId, treeState);
}
}
public void writeExternal(Element element) throws WriteExternalException {
saveExpandedPaths();
for (String subId : myReadTreeState.keySet()) {
TreeState treeState = myReadTreeState.get(subId);
Element subPane = new Element(ELEMENT_SUBPANE);
if (subId != null) {
subPane.setAttribute(ATTRIBUTE_SUBID, subId);
}
treeState.writeExternal(subPane);
element.addContent(subPane);
}
}
public final void restoreExpandedPaths() {
TreeState treeState = myReadTreeState.get(getSubId());
if (treeState != null) {
treeState.applyTo(myTree);
}
}
protected void saveExpandedPaths() {
if (myTree != null) {
TreeState treeState = TreeState.createOn(myTree);
myReadTreeState.put(getSubId(), treeState);
}
}