Examples with SignatureHelpDTO org.eclipse.che.api.languageserver.shared.lsapi.SignatureHelpDTO used on opensource projects

Example 1 with SignatureHelpDTO

use of org.eclipse.che.api.languageserver.shared.lsapi.SignatureHelpDTO in project che by eclipse.

the class LanguageServerSignatureHelp method signatureHelp.

@Override
public Promise<Optional<SignatureHelp>> signatureHelp(Document document, int offset) {
    TextDocumentPositionParamsDTO paramsDTO = helper.createTDPP(document, offset);
    Promise<SignatureHelpDTO> promise = client.signatureHelp(paramsDTO);
    return promise.then(new Function<SignatureHelpDTO, Optional<SignatureHelp>>() {

        @Override
        public Optional<SignatureHelp> apply(SignatureHelpDTO arg) throws FunctionException {
            if (arg == null) {
                return Optional.absent();
            }
            return Optional.<SignatureHelp>of(new SignatureHelpImpl(arg));
        }
    }).catchError(new Function<PromiseError, Optional<SignatureHelp>>() {

        @Override
        public Optional<SignatureHelp> apply(PromiseError arg) throws FunctionException {
            notificationManager.notify(arg.getMessage(), StatusNotification.Status.FAIL, StatusNotification.DisplayMode.EMERGE_MODE);
            return Optional.absent();
        }
    });
}