@Override
public void handleTreeCollapse(TreeEvent event) {
super.handleTreeCollapse(event);
for (SynchronizedTreeViewer viewer : synchronizedViewers) {
TreeItem otherItem = getMatchingItem(event.item.getData(), viewer);
if (otherItem != null) {
if (otherItem.getExpanded()) {
Event rawEvent = new Event();
rawEvent.doit = true;
rawEvent.widget = viewer.getTree();
rawEvent.display = event.display;
TreeEvent otherEvent = new TreeEvent(rawEvent);
otherEvent.item = otherItem;
viewer.internalHandleTreeCollapse(otherEvent);
viewer.setExpanded(otherItem, false);
}
viewer.getTree().redraw();
}
}
}
protected void synchronizeColumnSize(TreeColumn column) {
inSynchronization = true;
if (column != getTree().getColumn(0)) {
getTree().getColumn(0).setWidth(column.getWidth());
}
for (SynchronizedTreeViewer viewer : synchronizedViewers) {
TreeColumn update = viewer.getTree().getColumn(0);
if (update != column) {
update.setWidth(column.getWidth());
}
}
inSynchronization = false;
}
public static TreeItem getMatchingItem(Object data, SynchronizedTreeViewer viewer) {
if (data == null) return null;
if (data instanceof EmptyElement) {
data = ((EmptyElement) data).getRepresentedMissingElement();
}
TreeItem item = (TreeItem) viewer.findItem(data);
if (item != null && !item.isDisposed()) {
if (item.getParentItem() != null && !item.getParentItem().getExpanded()) {
return null;
}
return item;
}
// look in the given viewer for any EmptyElement instances
// that represent the given data
TreeItem[] items = viewer.getTree().getItems();
EmptyElement empty = locateEmptyElement(items, data);
if (empty != null) {
return (TreeItem) viewer.findItem(empty);
}
return null;
}
