private Collection<JSQualifiedNamedElement> getCandidates(Editor editor, PsiFile file) {
final Collection<JSQualifiedNamedElement> candidates;
if (myReference instanceof JSReferenceExpression
&& ((JSReferenceExpression) myReference).getQualifier() == null) {
Collection<JSQualifiedNamedElement> c =
getCandidates(editor, file, myReference.getCanonicalText());
filterCandidates(c);
candidates = new THashSet<>(c, JSPsiImplUtils.QUALIFIED_NAME_HASHING_STRATEGY);
} else {
JSQualifiedNamedElement invalidResult = null;
for (ResolveResult r : myReference.multiResolve(false)) {
PsiElement element = r.getElement();
if (element instanceof JSQualifiedNamedElement) {
invalidResult = (JSQualifiedNamedElement) element;
}
}
if (invalidResult != null) {
if (myReference.getElement().getParent() instanceof JSNewExpression
&& invalidResult instanceof JSFunction
&& ((JSFunction) invalidResult).isConstructor()) {
invalidResult = (JSClass) invalidResult.getParent();
}
candidates = new SmartList<>();
candidates.add(invalidResult);
} else {
candidates = Collections.emptyList();
}
}
return candidates;
}
public boolean isAvailable(
@NotNull final Project project, final Editor editor, final PsiFile file) {
if (!myReference.getElement().isValid()) return false;
final long modL =
myReference.getElement().getManager().getModificationTracker().getModificationCount();
if (!isAvailableCalculated || modL != modificationCount) {
final ResolveResult[] results = myReference.multiResolve(false);
boolean hasValidResult = false;
for (ResolveResult r : results) {
if (r.isValidResult()) {
hasValidResult = true;
break;
}
}
if (!hasValidResult) {
final Collection<JSQualifiedNamedElement> candidates = getCandidates(editor, file);
isAvailableCalculated = true;
isAvailable = candidates.size() > 0;
String text;
if (isAvailable) {
final JSQualifiedNamedElement element = candidates.iterator().next();
text = element.getQualifiedName() + "?";
if (candidates.size() > 1) text += " (multiple choices...)";
if (!ApplicationManager.getApplication().isHeadlessEnvironment()) {
text += " Alt+Enter";
}
} else {
text = "";
}
myText = text;
} else {
isAvailableCalculated = true;
isAvailable = false;
myText = "";
}
modificationCount = modL;
}
return isAvailable;
}
public boolean showHint(@NotNull final Editor editor) {
myEditor = editor;
final PsiElement element = myReference.getElement();
TextRange range =
InjectedLanguageManager.getInstance(element.getProject())
.injectedToHost(element, element.getTextRange());
HintManager.getInstance()
.showQuestionHint(editor, getText(), range.getStartOffset(), range.getEndOffset(), this);
return true;
}
private void doImport(final String qName) {
ApplicationManager.getApplication()
.runWriteAction(
() -> {
final PsiElement element = myReference.getElement();
SmartPsiElementPointer<PsiElement> pointer =
SmartPointerManager.getInstance(element.getProject())
.createSmartPsiElementPointer(element);
ImportUtils.doImport(element, qName, true);
PsiElement newElement = pointer.getElement();
if (newElement != null) {
ImportUtils.insertUseNamespaceIfNeeded(qName, newElement);
}
});
}
public boolean execute() {
final PsiFile containingFile = myReference.getElement().getContainingFile();
invoke(containingFile.getProject(), myEditor, containingFile);
return true;
}