List of usage examples for com.google.gwt.http.client RequestCallback RequestCallback
RequestCallback
From source file:com.data2semantics.yasgui.client.helpers.AppcacheHelper.java
License:Open Source License
public void getAppcacheSize() { String url = GWT.getModuleBaseURL() + "manifest.appcache?count"; if (JsMethods.isDevPageLoaded()) url += "&type=dev"; RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url); try {/*from w ww.ja va 2 s . co m*/ builder.sendRequest(null, new RequestCallback() { public void onError(Request request, Throwable e) { view.getLogger().severe("Unable to fetch appcache count (does browser support appcache??)"); } @Override public void onResponseReceived(Request request, Response response) { if (response.getStatusCode() == 200) { setAppcacheSize(response.getText()); } else { view.getLogger().severe("Unable to fetch appcache count (does browser support appcache??)"); } } }); } catch (RequestException e) { //couldnt connect to server view.getLogger().severe("Unable to fetch appcache count (does browser support appcache??)"); } }
From source file:com.data2semantics.yasgui.client.helpers.SparqlQuery.java
License:Open Source License
public void doRequest() { if (!view.getConnHelper().isOnline() && !JsMethods.corsEnabled(endpoint)) { //cors disabled and not online: problem! String errorMsg = "YASGUI is current not connected to the YASGUI server. " + "This mean you can only access endpoints on your own computer (e.g. localhost), which are <a href=\"http://enable-cors.org/\" target=\"_blank\">CORS enabled</a>.<br>" + "The endpoint you try to access is either not running on your computer, or not CORS-enabled.<br>" + corsNotification;//w w w .j av a2 s . co m view.getErrorHelper().onQueryError(errorMsg, endpoint, queryString, customQueryArgs); return; } view.getElements().onQueryStart(); RequestBuilder builder; HashMultimap<String, String> queryArgs = customQueryArgs; RequestBuilder.Method requestMethod = queryRequestMethod; queryArgs.put("query", queryString); if (JsMethods.corsEnabled(endpoint)) { String params = Helper.getParamsAsString(queryArgs); String url = endpoint; if (queryRequestMethod == RequestBuilder.GET) { url += "?" + params; } builder = new RequestBuilder(queryRequestMethod, url); if (queryRequestMethod == RequestBuilder.POST) { builder.setHeader("Content-Type", "application/x-www-form-urlencoded"); builder.setRequestData(params); } } else { requestMethod = RequestBuilder.POST; queryArgs.put("endpoint", endpoint); queryArgs.put("requestMethod", (queryRequestMethod == RequestBuilder.POST ? "POST" : "GET")); builder = new RequestBuilder(RequestBuilder.POST, GWT.getModuleBaseURL() + "sparql"); //send via proxy builder.setHeader("Content-Type", "application/x-www-form-urlencoded"); } builder.setHeader("Accept", acceptHeader); try { final long startTime = System.currentTimeMillis(); builder.sendRequest((requestMethod == RequestBuilder.POST ? Helper.getParamsAsString(queryArgs) : null), new RequestCallback() { public void onError(Request request, Throwable e) { //e.g. a timeout queryErrorHandler(e); } @Override public void onResponseReceived(Request request, Response response) { view.getElements().onQueryFinish(); if (!response.getStatusText().equals("Abort")) { //if user cancels query, textStatus will be 'abort'. No need to show error window then if (response.getStatusCode() >= 200 && response.getStatusCode() < 300) { if (view.getSettings().useGoogleAnalytics()) { long stopTime = System.currentTimeMillis(); GoogleAnalytics.trackEvent(new GoogleAnalyticsEvent(endpoint, JsMethods.getUncommentedSparql(queryString), Integer.toString((int) (stopTime - startTime)), (int) (stopTime - startTime))); } drawResults(response.getText(), response.getHeader("Content-Type")); } else { queryErrorHandler(response); } } } }); } catch (RequestException e) { queryErrorHandler(e); } }
From source file:com.dawg6.gwt.client.service.ServiceUtil.java
License:Open Source License
public void versionCheck(final Handler<VersionCheck> handler) { Scheduler.get().scheduleDeferred(new Command() { @Override//from ww w. ja v a 2s .c o m public void execute() { RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, GWT.getHostPageBaseURL() + versionServletUri); // GWT.log("Version URL = " + builder.getUrl()); final VersionCheck result = new VersionCheck(); try { builder.sendRequest(null, new RequestCallback() { @Override public void onResponseReceived(Request request, Response response) { String text = response.getText(); if (text != null) { if (text.startsWith(VersionBuilder.PREFIX)) { result.serverVersion = text.substring(VersionBuilder.PREFIX.length()); if (text.startsWith(CLIENT_VERSION.getPrefixString())) { result.success = true; } } } if ((!result.success) && (result.serverVersion == null)) { result.exception = "Unable to obtain Server version."; } if (handler != null) handler.handleResult(result); } @Override public void onError(Request request, Throwable exception) { result.success = false; result.exception = "Error communicating with server."; if (handler != null) handler.handleResult(result); } }); } catch (Exception e) { result.success = false; result.exception = "Error communicating with server."; if (handler != null) handler.handleResult(result); } } }); }
From source file:com.dawg6.web.dhcalc.client.Service.java
License:Open Source License
public void versionCheck(final Handler<VersionCheck> handler) { Scheduler.get().scheduleDeferred(new Command() { @Override//from ww w . j a v a 2s . c om public void execute() { RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, GWT.getHostPageBaseURL() + "version?v2"); final VersionCheck result = new VersionCheck(); try { builder.sendRequest(null, new RequestCallback() { @Override public void onResponseReceived(Request request, Response response) { String text = response.getText(); if (text != null) { if (text.startsWith(Version.PREFIX)) { result.serverVersion = text.substring(Version.PREFIX.length()); if (text.startsWith(Version.getVersion().getPrefixString())) { result.success = true; } } } if ((!result.success) && (result.serverVersion == null)) { result.exception = "Unable to obtain Server version."; } if (handler != null) handler.handleResult(result); } @Override public void onError(Request request, Throwable exception) { result.success = false; result.exception = "Error communicating with server."; if (handler != null) handler.handleResult(result); } }); } catch (Exception e) { result.success = false; result.exception = "Error communicating with server."; if (handler != null) handler.handleResult(result); } } }); }
From source file:com.ephesoft.gxt.rv.client.layout.ReviewValidateLayout.java
License:Open Source License
public void onWindowClose() { final String batchInstanceIdentifier = ReviewValidateNavigator.getCurrentBatchInstanceIdentifier(); if (!StringUtil.isNullOrEmpty(batchInstanceIdentifier)) { // following code was inserted to call a webservice to do cleanup and updateTime on RV screen close. RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, StringUtil.concatenate(CoreCommonConstant.WINDOW_CLOSE_SERVICE_URL, batchInstanceIdentifier)); final String postData = CoreCommonConstants.EMPTY_STRING; builder.setHeader(CoreCommonConstant.CONTENT_TYPE, CoreCommonConstant.MIME_TYPE); try {//ww w . jav a 2s . co m builder.sendRequest(postData, new RequestCallback() { public void onError(Request request, Throwable exception) { // code will never reach here, before that window will be closed. } public void onResponseReceived(Request request, Response response) { // code will never reach here, before that window will be closed. } }); } catch (com.google.gwt.http.client.RequestException e) { // UNReachable Code.. } } }
From source file:com.example.jumpnote.web.jsonrpc.gwt.JsonRpcGwtClient.java
License:Apache License
public void callBatch(final List<JsonRpcClient.Call> calls, final BatchCallback callback) { RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, mRpcUrl); JSONObject requestJson = new JSONObject(); JSONArray callsJson = new JSONArray(); for (int i = 0; i < calls.size(); i++) { JsonRpcClient.Call call = calls.get(i); JSONObject callJson = new JSONObject(); callJson.put("method", new JSONString(call.getMethodName())); if (call.getParams() != null) { JSONObject callParams = (JSONObject) call.getParams(); for (String key : callParams.keySet()) { callJson.put(key, callParams.get(key)); }/*from www . j a v a 2 s . co m*/ } callsJson.set(i, callJson); } requestJson.put("calls", callsJson); try { builder.sendRequest(requestJson.toString(), new RequestCallback() { public void onError(Request request, Throwable e) { callback.onError(-1, new JsonRpcException(-1, e.getMessage())); } public void onResponseReceived(Request request, Response response) { if (200 == response.getStatusCode()) { JSONObject responseJson = JSONParser.parse(response.getText()).isObject(); JSONArray resultsJson = responseJson.get("results").isArray(); Object[] resultData = new Object[calls.size()]; for (int i = 0; i < calls.size(); i++) { JSONObject result = resultsJson.get(i).isObject(); if (result.containsKey("error")) { callback.onError(i, new JsonRpcException((int) result.get("error").isNumber().doubleValue(), calls.get(i).getMethodName(), result.get("message").isString().stringValue(), null)); resultData[i] = null; } else { resultData[i] = result.get("data"); } } callback.onData(resultData); } else { callback.onError(-1, new JsonRpcException(-1, "Received HTTP status code other than 200: " + response.getStatusText())); } } }); } catch (RequestException e) { // Couldn't connect to server callback.onError(-1, new JsonRpcException(-1, e.getMessage())); } }
From source file:com.extjs.gxt.ui.client.data.HttpProxy.java
License:sencha.com license
public void load(final DataReader<D> reader, final Object loadConfig, final AsyncCallback<D> callback) { try {/*from w w w .jav a 2s.c o m*/ String data = null; if (builder.getHTTPMethod().equals("POST")) { data = generateUrl(loadConfig); } else { String url = initUrl; url = url + (url.indexOf("?") == -1 ? "?" : "&"); String params = generateUrl(loadConfig); url += params; setUrl(builder, url); } builder.sendRequest(data, new RequestCallback() { public void onError(Request request, Throwable exception) { callback.onFailure(exception); } @SuppressWarnings("unchecked") public void onResponseReceived(Request request, Response response) { if (response.getStatusCode() != Response.SC_OK) { callback.onFailure( new RuntimeException("HttpProxy: Invalid status code " + response.getStatusCode())); return; } String text = response.getText(); try { D data = null; if (reader != null) { data = reader.read(loadConfig, text); } else { data = (D) text; } callback.onSuccess(data); } catch (Exception e) { e.printStackTrace(); callback.onFailure(e); } } }); } catch (Exception e) { callback.onFailure(e); } }
From source file:com.extjs.gxt.ui.client.widget.HtmlContainer.java
License:sencha.com license
protected void requestData() { RequestBuilder rb = requestBuilder == null ? new RequestBuilder(httpMethod, url) : requestBuilder; if (callback == null) { callback = new RequestCallback() { public void onError(Request request, Throwable exception) { handleError(request, exception); }/*from www. j a v a2 s .c o m*/ public void onResponseReceived(Request request, Response response) { handleResponseReceived(request, response); } }; } try { rb.sendRequest(requestData, callback); } catch (RequestException e) { handleError(null, e); } }
From source file:com.facebook.tsdb.tsdash.client.service.HTTPService.java
License:Apache License
private <T> void get(final AsyncCallback<T> callback, final String url, String params, final JSONDecoder<T> decoder) { RequestBuilder req = new RequestBuilder(RequestBuilder.GET, url + "?" + params); req.setTimeoutMillis(TIMEOUT); req.setCallback(new RequestCallback() { @Override/*from w w w .jav a2 s.c o m*/ public void onResponseReceived(Request request, Response response) { try { T result = decoder.tryDecodeFromService(response.getText()); callback.onSuccess(result); } catch (JSONParseException e) { GWT.log("Error parsing data from '" + url + "'", e); callback.onFailure(e); } catch (ServiceException e) { GWT.log("Error in remote service", e); callback.onFailure(e); } } @Override public void onError(Request request, Throwable e) { GWT.log("Error sending GET request to '" + url + "'", e); callback.onFailure(e); } }); try { req.send(); } catch (RequestException e) { GWT.log("Request exception for '" + url + "'", e); callback.onFailure(e); } }
From source file:com.feller.picup.client.PickUp.java
License:Open Source License
protected void getBucketURL() { RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, URL.encode(getBacketURL)); try {/*from w w w .ja v a2 s. co m*/ Request request = builder.sendRequest(null, new RequestCallback() { public void onError(Request request, Throwable exception) { displayError("Couldn't retrieve JSON ::" + exception.getMessage()); } public void onResponseReceived(Request request, Response response) { if (200 == response.getStatusCode()) { urlToQR(response.getText()); } else { displayError("couldn't retrieve JSON (" + response.getStatusCode() + ")"); } } }); } catch (RequestException e) { displayError("exception: Couldn't retrieve JSON" + e.getMessage()); } }