private boolean checkReadonlyUsages() {
final Set<VirtualFile> readOnlyUsages = getReadOnlyUsagesFiles();
return readOnlyUsages.isEmpty()
|| !ReadonlyStatusHandler.getInstance(myProject)
.ensureFilesWritable(VfsUtil.toVirtualFileArray(readOnlyUsages))
.hasReadonlyFiles();
}
@Nullable
private UsageTarget[] getSelectedUsageTargets() {
TreePath[] selectionPaths = myTree.getSelectionPaths();
if (selectionPaths == null) return null;
Set<UsageTarget> targets = new THashSet<UsageTarget>();
for (TreePath selectionPath : selectionPaths) {
Object lastPathComponent = selectionPath.getLastPathComponent();
if (lastPathComponent instanceof UsageTargetNode) {
UsageTargetNode usageTargetNode = (UsageTargetNode) lastPathComponent;
UsageTarget target = usageTargetNode.getTarget();
if (target != null && target.isValid()) {
targets.add(target);
}
}
}
return targets.isEmpty() ? null : targets.toArray(new UsageTarget[targets.size()]);
}