Example usage for com.google.gwt.http.client RequestCallback RequestCallback

List of usage examples for com.google.gwt.http.client RequestCallback RequestCallback

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In this page you can find the example usage for com.google.gwt.http.client RequestCallback RequestCallback.

Prototype

RequestCallback

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Usage

From source file:ca.upei.ic.timetable.client.FindCourseViewController.java

License:Apache License

public SemesterModelView getSemesterModel() {
    if (!semesterLoaded_) {
        Service.defaultInstance().askSemesters(new RequestCallback() {

            public void onError(Request request, Throwable exception) {
                app_.error(ApplicationController.OOPS, exception);
            }/* ww  w.j  a  va  2 s. c o m*/

            public void onResponseReceived(Request request, Response response) {
                try {
                    String text = response.getText();
                    JSONValue value = JSONParser.parse(text);
                    semester_.loadJSON(value);
                    semesterLoaded_ = true;
                } catch (Exception e) {
                    app_.error("Error: " + response.getText(), e);
                }
            }

        });
    }

    return semester_;
}

From source file:cc.kune.core.client.actions.xml.XMLActionsParser.java

License:GNU Affero Public License

/**
 * Instantiates a new xML actions parser.
 *
 * @param errHandler/* w  ww. ja  v  a  2s  .  co m*/
 *          the err handler
 * @param contentViewer
 *          the content viewer
 * @param actionRegistry
 *          the action registry
 * @param contentService
 *          the content service
 * @param session
 *          the session
 * @param stateManager
 *          the state manager
 * @param i18n
 *          the i18n
 * @param newMenusRegistry
 *          the new menus registry
 * @param services
 *          the services
 */
@Inject
public XMLActionsParser(final ErrorHandler errHandler, final ContentViewerPresenter contentViewer,
        final ActionRegistryByType actionRegistry, final Provider<ContentServiceAsync> contentService,
        final Session session, final StateManager stateManager, final I18nTranslationService i18n,
        final NewMenusForTypeIdsRegistry newMenusRegistry, final Services services) {
    this.errHandler = errHandler;
    this.contentViewer = contentViewer;
    this.actionRegistry = actionRegistry;
    this.contentService = contentService;
    this.session = session;
    this.stateManager = stateManager;
    this.i18n = i18n;
    this.newMenusRegistry = newMenusRegistry;
    submenus = new HashMap<String, SubMenuDescriptor>();
    // Based on:
    // http://www.roseindia.net/tutorials/gwt/retrieving-xml-data.shtml
    final RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET,
            XMLActionsConstants.ACTIONS_XML_LOCATION_PATH_ABS);
    session.onAppStart(false, new AppStartHandler() {
        @Override
        public void onAppStart(final AppStartEvent event) {
            try {
                requestBuilder.sendRequest(null, new RequestCallback() {
                    @Override
                    public void onError(final Request request, final Throwable ex) {
                        onFailed(ex);
                    }

                    @Override
                    public void onResponseReceived(final Request request, final Response response) {
                        parse(new XMLKuneClientActions(services, response.getText()));
                    }
                });
            } catch (final RequestException ex) {
                onFailed(ex);
            }
        }
    });
}

From source file:cc.kune.core.client.auth.WaveClientSimpleAuthenticator.java

License:GNU Affero Public License

/**
 * Do login./*from   w w  w  .  j a  v a 2 s . com*/
 * 
 * @param userWithoutDomain
 *          the user without domain
 * @param passwd
 *          the passwd
 * @param callback
 *          the callback
 */
public void doLogin(final String userWithoutDomain, final String passwd, final AsyncCallback<Void> callback) {
    final RequestBuilder request = new RequestBuilder(RequestBuilder.POST, "/auth/signin");
    final StringBuffer params = new StringBuffer();
    params.append("address=");
    params.append(URL.encodeQueryString(userWithoutDomain));
    params.append("&password=");
    params.append(URL.encodeQueryString(passwd));
    params.append("&signIn=");
    params.append(URL.encodeQueryString("Sign in"));
    try {
        request.setHeader("Content-Type", "application/x-www-form-urlencoded");
        request.sendRequest(params.toString(), new RequestCallback() {
            @Override
            public void onError(final Request request, final Throwable exception) {
                StackErrorEvent.fire(eventBus, exception);
                callback.onFailure(exception);
            }

            @Override
            public void onResponseReceived(final Request request, final Response response) {
                callback.onSuccess(null);
            }
        });
    } catch (final RequestException e) {
        StackErrorEvent.fire(eventBus, e);
    }
}

From source file:cc.kune.core.client.auth.WaveClientSimpleAuthenticator.java

License:GNU Affero Public License

/**
 * Do logout./*from  w  ww.j a  va2 s.co  m*/
 * 
 * @param callback
 *          the callback
 */
public void doLogout(final AsyncCallback<Void> callback) {
    // Original: <a href=\"/auth/signout?r=/\">"
    final RequestBuilder request = new RequestBuilder(RequestBuilder.GET, "/auth/signout");
    try {
        request.setHeader("Content-Type", "application/x-www-form-urlencoded");
        final StringBuffer params = new StringBuffer();
        request.sendRequest(params.toString(), new RequestCallback() {
            @Override
            public void onError(final Request request, final Throwable exception) {
                StackErrorEvent.fire(eventBus, exception);
                callback.onFailure(exception);
            }

            @Override
            public void onResponseReceived(final Request request, final Response response) {
                callback.onSuccess(null);
            }
        });
    } catch (final RequestException e) {
        StackErrorEvent.fire(eventBus, e);
    }
}

From source file:cc.kune.core.client.sitebar.search.MultivalueSuggestBox.java

License:GNU Affero Public License

/**
 * Retrieve Options (name-value pairs) that are suggested from the REST
 * endpoint//www .j av a2s. c  o m
 * 
 * @param query
 *          - the String search term
 * @param from
 *          - the 0-based begin index int
 * @param to
 *          - the end index inclusive int
 * @param callback
 *          - the OptionQueryCallback to handle the response
 */
private void queryOptions(final String query, final int from, final int to,
        final OptionQueryCallback callback) {
    final RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
            URL.encode(mrestEndpointUrl + "?" + SearcherConstants.QUERY_PARAM + "=" + query + "&"
                    + SearcherConstants.START_PARAM + "=" + from + "&" + SearcherConstants.LIMIT_PARAM + "="
                    + PAGE_SIZE));

    // Set our headers
    builder.setHeader("Accept", "application/json; charset=utf-8");

    // Fails on chrome
    // builder.setHeader("Accept-Charset", "UTF-8");

    builder.setCallback(new RequestCallback() {

        @Override
        public void onError(final com.google.gwt.http.client.Request request, final Throwable exception) {
            callback.error(exception);
        }

        @Override
        public void onResponseReceived(final com.google.gwt.http.client.Request request,
                final Response response) {
            final JSONValue val = JSONParser.parse(response.getText());
            final JSONObject obj = val.isObject();
            final int totSize = (int) obj.get(OptionResultSet.TOTAL_SIZE).isNumber().doubleValue();
            final OptionResultSet options = new OptionResultSet(totSize);
            final JSONArray optionsArray = obj.get(OptionResultSet.OPTIONS).isArray();

            if (options.getTotalSize() > 0 && optionsArray != null) {

                for (int i = 0; i < optionsArray.size(); i++) {
                    if (optionsArray.get(i) == null) {
                        /*
                         * This happens when a JSON array has an invalid trailing comma
                         */
                        continue;
                    }

                    final JSONObject jsonOpt = optionsArray.get(i).isObject();
                    final Option option = new Option();

                    final String longName = jsonOpt.get(OptionResultSet.DISPLAY_NAME).isString().stringValue();
                    final String shortName = jsonOpt.get(OptionResultSet.VALUE).isString().stringValue();
                    final JSONValue groupTypeJsonValue = jsonOpt.get("groupType");
                    final String prefix = groupTypeJsonValue.isString() == null ? ""
                            : GroupType.PERSONAL.name().equals(groupTypeJsonValue.isString().stringValue())
                                    ? I18n.t("User") + ": "
                                    : I18n.t("Group") + ": ";
                    option.setName(prefix
                            + (!longName.equals(shortName) ? longName + " (" + shortName + ")" : shortName));
                    option.setValue(jsonOpt.get(OptionResultSet.VALUE).isString().stringValue());
                    options.addOption(option);
                }
            }
            callback.success(options);
        }
    });

    try {
        if (lastQuery != null && lastQuery.isPending()) {
            lastQuery.cancel();
        }
        lastQuery = builder.send();
    } catch (final RequestException e) {
        updateFormFeedback(FormFeedback.ERROR, "Error: " + e.getMessage());
    }

}

From source file:cc.kune.embed.client.EmbedHelper.java

License:GNU Affero Public License

/**
 * Process request./*from   w w w.j  av  a  2  s.  c o m*/
 *
 * @param url
 *          the url
 * @param callback
 *          the callback
 */
public static void processRequest(final String url, final Callback<Response, Void> callback) {
    try {
        final RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);
        // Needed for CORS
        builder.setIncludeCredentials(true);
        @SuppressWarnings("unused")
        final Request request = builder.sendRequest(null, new RequestCallback() {
            @Override
            public void onError(final Request request, final Throwable exception) {
                Log.error("CORS exception: ", exception);
                callback.onFailure(null);
            }

            @Override
            public void onResponseReceived(final Request request, final Response response) {
                if (200 == response.getStatusCode()) {
                    callback.onSuccess(response);
                } else {
                    Log.error("Couldn't retrieve CORS (" + response.getStatusText() + ")");
                    callback.onFailure(null);
                }
            }
        });
    } catch (final RequestException exception) {
        Log.error("CORS exception: ", exception);
        callback.onFailure(null);
    }
}

From source file:ch.sebastienzurfluh.swissmuseum.core.client.model.io.CakeConnector.java

License:Open Source License

private <T> void asyncRequest(final Requests request, final int referenceId, String args,
        final AsyncCallback<T> callback) {

    final StringBuilder url = new StringBuilder(cakePath + request.getURL());

    url.append(CAKE_ARGS_SEPARATOR).append(args);
    url.append(CAKE_ARGS_SEPARATOR).append(referenceId);

    url.append(CAKE_SUFFIX);/*from  w w w. j  a  v  a  2  s .co  m*/

    System.out.println("Making async request on " + url);

    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url.toString());

    try {
        builder.sendRequest(null, new RequestCallback() {
            public void onError(Request httpRequest, Throwable exception) {
                System.out.println("JSON request failure. " + exception.getLocalizedMessage());
                // we do nothing else than log
                callback.onFailure(exception);
            }

            @SuppressWarnings("unchecked")
            public void onResponseReceived(Request httpRequest, Response response) {
                if (200 == response.getStatusCode()) {
                    System.out.println("Got answer from async request.");

                    JsArray<Entry> entries = evalJson(response.getText().trim());

                    // BLACKBOX!!!
                    DataType dataType = DataType.PAGE;

                    switch (request) {
                    case GETALLGROUPMENUS:
                        dataType = DataType.GROUP;
                    case GETALLPAGEMENUSFROMGROUP:
                        // menu collection
                        LinkedList<MenuData> dataList = new LinkedList<MenuData>();
                        for (int i = 0; i < entries.length(); i++) {
                            Entry entry = entries.get(i);
                            dataList.add(parseMenuData(entry, referenceId, dataType));
                        }
                        // give callback
                        callback.onSuccess((T) dataList);
                        break;
                    case GETDATA:
                    case GETFIRSTDATAOFGROUP:
                        // single data
                        Data parsedData = parseData(entries.get(0), referenceId, DataType.PAGE);
                        callback.onSuccess((T) parsedData);
                        break;
                    case GETRESOURCE:
                        ResourceData parsedData2 = parseResourceData(entries.get(0), referenceId);
                        callback.onSuccess((T) parsedData2);
                    }
                }
            }
        });
    } catch (Exception e) {
        callback.onFailure(e);
    }
}

From source file:ch.sebastienzurfluh.swissmuseum.parcours.client.model.SimpleCakeBridge.java

License:Open Source License

public <ResponseType extends JavaScriptObject> void sendRequest(String requestString,
        final WithResult<ResponseType> withResult) {
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
            cakePath + CAKE_ARGS_SEPARATOR + requestString + CAKE_SUFFIX);

    try {// w  w  w.  j  a  v  a2  s  .co  m
        builder.sendRequest(null, new RequestCallback() {
            public void onError(Request httpRequest, Throwable exception) {
                System.out.println("JSON request failure. " + exception.getLocalizedMessage());
                // we do nothing else than log
            }

            @SuppressWarnings("unchecked")
            public void onResponseReceived(Request httpRequest, Response response) {
                if (200 == response.getStatusCode()) {
                    System.out.println("Got answer from async request.");

                    withResult.execute((ResponseType) evalJson(response.getText().trim()));
                }
            }
        });
    } catch (Exception e) {
        System.out.println("JSON request error. " + e.getLocalizedMessage());
        // we do nothing else than log
    }
}

From source file:ch.unifr.pai.twice.comm.clientServerTime.client.ClientServerTimeOffset.java

License:Apache License

static RequestCallback createServerTimeOffsetRequestCallback(final AsyncCallback<Long> callback,
        final long startTime) {
    return new RequestCallback() {

        @Override//from www  .  j  a  v a 2 s .  c o  m
        public void onResponseReceived(Request request, Response response) {
            long endTime = getCurrentTime();
            long duration = endTime - startTime;
            String result = response.getText();
            if (result != null) {
                long serverTime = Long.parseLong(result);
                // We assume that the upload and download for a very small request are the same (50% of the request duration for upload, 50% for
                // download)
                long difference = serverTime - (endTime - (duration / 2));
                callback.onSuccess(difference);
            }
        }

        @Override
        public void onError(Request request, Throwable exception) {
            callback.onFailure(exception);

        }
    };
}

From source file:ch.unifr.pai.twice.mousecontrol.client.TouchPadWidget.java

License:Apache License

/**
 * starts the execution of the component
 *///from w w w  . jav  a 2s.c  o m
public void start() {
    if (!running) {
        label.setText("looking for available remote-clients");
        getAvailableClients(new Command() {

            @Override
            public void execute() {
                label.setText((availableClients == null ? "0" : availableClients.length) + " clients found");
                if (getCurrentClient() != null) {
                    label.setText("looking for cursor on client " + getCurrentClient());
                    lookForCursor = new Timer() {

                        @Override
                        public void run() {
                            try {
                                new RequestBuilder(RequestBuilder.GET, GWT.getHostPageBaseURL() + controlServlet
                                        + "?a=x"
                                        + (getCurrentClient() != null ? "&targetUUID=" + getCurrentClient()
                                                : "")
                                        + (uuid != null ? "&uuid=" + uuid : "")
                                        + (host != null ? "&host=" + host : "")
                                        + (port != null ? "&port=" + port : "")).sendRequest(null,
                                                new RequestCallback() {

                                                    @Override
                                                    public void onResponseReceived(Request request,
                                                            Response response) {
                                                        if (response.getStatusCode() > 400)
                                                            onError(request, null);
                                                        label.setText("GOT DATA: " + response.getText());
                                                        String color = extractColor(response);
                                                        if (color == null || color.isEmpty()
                                                                || color.equals("#null"))
                                                            color = null;
                                                        extractLastAction(response);

                                                        setScreenDimension(extractScreenDimensions(response));
                                                        if (color != null) {
                                                            setColor(color);
                                                            cursorAssigned();
                                                        } else {
                                                            noCursorAvailable();
                                                        }
                                                    }

                                                    @Override
                                                    public void onError(Request request, Throwable exception) {
                                                        noCursorAvailable();
                                                    }
                                                });
                            } catch (RequestException e) {
                                noCursorAvailable();
                            }
                        }
                    };
                    lookForCursor.run();
                }
            }
        });
    }
}