@Override
public int compare(UsageNode c1, UsageNode c2) {
if (c1 instanceof StringNode) return 1;
if (c2 instanceof StringNode) return -1;
Usage o1 = c1.getUsage();
Usage o2 = c2.getUsage();
if (o1 == MORE_USAGES_SEPARATOR) return 1;
if (o2 == MORE_USAGES_SEPARATOR) return -1;
VirtualFile v1 = UsageListCellRenderer.getVirtualFile(o1);
VirtualFile v2 = UsageListCellRenderer.getVirtualFile(o2);
String name1 = v1 == null ? null : v1.getName();
String name2 = v2 == null ? null : v2.getName();
int i = Comparing.compare(name1, name2);
if (i != 0) return i;
if (o1 instanceof Comparable && o2 instanceof Comparable) {
return ((Comparable) o1).compareTo(o2);
}
FileEditorLocation loc1 = o1.getLocation();
FileEditorLocation loc2 = o2.getLocation();
return Comparing.compare(loc1, loc2);
}
@Nullable
private static Editor getEditorFor(@NotNull Usage usage) {
FileEditorLocation location = usage.getLocation();
FileEditor newFileEditor = location == null ? null : location.getEditor();
return newFileEditor instanceof TextEditor ? ((TextEditor) newFileEditor).getEditor() : null;
}