@NotNull
private Set<Usage> getReadOnlyUsages() {
final Set<Usage> result = new THashSet<Usage>();
final Set<Map.Entry<Usage, UsageNode>> usages = myUsageNodes.entrySet();
for (Map.Entry<Usage, UsageNode> entry : usages) {
Usage usage = entry.getKey();
UsageNode node = entry.getValue();
if (node != null && node != NULL_NODE && !node.isExcluded() && usage.isReadOnly()) {
result.add(usage);
}
}
return result;
}
public UsageNode doAppendUsage(@NotNull Usage usage) {
// invoke in ReadAction to be be sure that usages are not invalidated while the tree is being
// built
ApplicationManager.getApplication().assertReadAccessAllowed();
if (!usage.isValid()) {
// because the view is built incrementally, the usage may be already invalid, so need to
// filter such cases
return null;
}
UsageNode node = myBuilder.appendUsage(usage);
myUsageNodes.put(usage, node == null ? NULL_NODE : node);
if (!myIsFirstVisibleUsageFound && node != null) { // first visible usage found;
myIsFirstVisibleUsageFound = true;
showNode(node);
}
return node;
}
