Example usage for com.google.gwt.xhr.client XMLHttpRequest clearOnReadyStateChange

List of usage examples for com.google.gwt.xhr.client XMLHttpRequest clearOnReadyStateChange

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Introduction

In this page you can find the example usage for com.google.gwt.xhr.client XMLHttpRequest clearOnReadyStateChange.

Prototype

public abstract void clearOnReadyStateChange();

Source Link

Document

Clears the ReadyStateChangeHandler .

Usage

From source file:com.cgxlib.xq.client.plugins.deferred.PromiseReqBuilder.java

License:Apache License

/**
 * Using this constructor we access to some things in the xmlHttpRequest
 * which are not available in GWT, like adding progress handles or sending
 * javascript data (like forms in modern html5 file api).
 *//*from w  w w . ja va2 s.c o  m*/
public PromiseReqBuilder(Settings settings) {
    String httpMethod = settings.getType();
    String url = settings.getUrl();
    IsProperties data = settings.getData();
    String ctype = settings.getContentType();
    Boolean isFormData = data != null && data.getDataImpl() instanceof JavaScriptObject
            && JsUtils.isFormData(data.<JavaScriptObject>getDataImpl());

    XMLHttpRequest xmlHttpRequest = XMLHttpRequest.create();
    try {
        if (settings.getUsername() != null && settings.getPassword() != null) {
            xmlHttpRequest.open(httpMethod, url, settings.getUsername(), settings.getPassword());
        } else if (settings.getUsername() != null) {
            xmlHttpRequest.open(httpMethod, url, settings.getUsername());
        } else {
            xmlHttpRequest.open(httpMethod, url);
        }
    } catch (JavaScriptException e) {
        RequestPermissionException requestPermissionException = new RequestPermissionException(url);
        requestPermissionException.initCause(new RequestException(e.getMessage()));
        onError(null, e);
        return;
    }

    JsUtils.prop(xmlHttpRequest, "onprogress", JsUtils.wrapFunction(new Function() {
        public void f() {
            JsCache p = arguments(0);
            double total = p.getDouble("total");
            double loaded = p.getDouble("loaded");
            double percent = loaded == 0 ? 0 : total == 0 ? 100 : (100 * loaded / total);
            dfd.notify(total, loaded, percent, "download");
        }
    }));

    JavaScriptObject upload = JsUtils.prop(xmlHttpRequest, "upload");
    JsUtils.prop(upload, "onprogress", JsUtils.wrapFunction(new Function() {
        public void f() {
            JsCache p = arguments(0);
            double total = p.getDouble("total");
            double loaded = p.getDouble("loaded");
            double percent = 100 * loaded / total;
            dfd.notify(total, loaded, percent, "upload");
        }
    }));

    IsProperties headers = settings.getHeaders();
    if (headers != null) {
        for (String headerKey : headers.getFieldNames()) {
            xmlHttpRequest.setRequestHeader(headerKey, String.valueOf(headers.get(headerKey)));
        }
    }

    if (data != null && !isFormData && !"GET".equalsIgnoreCase(httpMethod)) {
        xmlHttpRequest.setRequestHeader("Content-Type", ctype);
    }

    // Using xq to set credentials since this method was added in 2.5.1
    // xmlHttpRequest.setWithCredentials(true);
    JsUtils.prop(xmlHttpRequest, "withCredentials", settings.getWithCredentials());

    final Request request = createRequestVltr(xmlHttpRequest, settings.getTimeout(), this);

    xmlHttpRequest.setOnReadyStateChange(new ReadyStateChangeHandler() {
        public void onReadyStateChange(XMLHttpRequest xhr) {
            if (xhr.getReadyState() == XMLHttpRequest.DONE) {
                xhr.clearOnReadyStateChange();
                fireOnResponseReceivedVltr(request, PromiseReqBuilder.this);
            }
        }
    });

    try {
        JsUtils.runJavascriptFunction(xmlHttpRequest, "send",
                isFormData ? data.getDataImpl() : settings.getDataString());
    } catch (JavaScriptException e) {
        onError(null, e);
    }
}

From source file:com.codenvy.plugin.contribution.client.steps.GenerateReviewFactoryStep.java

License:Open Source License

private void saveFactory(final FormData formData, final AsyncCallback<Factory> callback) {
    final String requestUrl = apiTemplate.saveFactory();

    final XMLHttpRequest xhr = XMLHttpRequest.create();
    xhr.open(HTTPMethod.POST, requestUrl);
    xhr.setRequestHeader(ACCEPT, APPLICATION_JSON);
    xhr.setOnReadyStateChange(new ReadyStateChangeHandler() {

        @Override//w w  w . ja va 2s.c o  m
        public void onReadyStateChange(final XMLHttpRequest request) {
            if (request.getReadyState() == XMLHttpRequest.DONE) {
                if (request.getStatus() == Response.SC_OK) {
                    request.clearOnReadyStateChange();
                    final String payLoad = request.getResponseText();
                    final Factory createdFactory = dtoFactory.createDtoFromJson(payLoad, Factory.class);

                    if (createdFactory.getId() == null || createdFactory.getId().isEmpty()) {
                        final ServiceError error = dtoFactory.createDtoFromJson(payLoad, ServiceError.class);
                        callback.onFailure(new Exception(error.getMessage()));
                    } else {
                        callback.onSuccess(createdFactory);
                    }
                } else {
                    final Response response = new ResponseImpl(request);
                    callback.onFailure(new ServerException(response));
                }
            }

        }
    });

    if (!sendFormData(xhr, formData)) {
        callback.onFailure(new Exception("Could not call service"));
    }
}

From source file:com.google.speedtracer.client.util.Xhr.java

License:Apache License

private static void request(XMLHttpRequest xhr, String method, String url, String requestData,
        String contentType, XhrCallback callback) {
    try {/*  w  w  w  . j a  v  a2 s  .  c o  m*/
        xhr.setOnReadyStateChange(new Handler(callback));
        xhr.open(method, url);
        xhr.setRequestHeader("Content-type", contentType);
        xhr.send(requestData);
    } catch (Exception e) {
        // Just fail.
        callback.onFail(xhr);
        xhr.clearOnReadyStateChange();
    }
}

From source file:com.google.speedtracer.client.util.Xhr.java

License:Apache License

private static void request(XMLHttpRequest xhr, String method, String url, final XhrCallback callback) {
    try {//from w w  w  .  j a v a  2  s.  c  o m
        xhr.setOnReadyStateChange(new Handler(callback));
        xhr.open(method, url);
        xhr.send();
    } catch (Exception e) {
        // Just fail.
        callback.onFail(xhr);
        xhr.clearOnReadyStateChange();
    }
}

From source file:com.gwtpro.html5.fileapi.client.upload.UploadRequest.java

License:Apache License

/**
 * Cancels a pending request. If the request has already been canceled or if
 * it has timed out no action is taken.//  ww  w.j a va 2 s.  com
 */
public void cancel() {
    if (this.xmlHttpRequest != null) {
        XMLHttpRequest xmlHttp = this.xmlHttpRequest;
        this.xmlHttpRequest = null;
        xmlHttp.clearOnReadyStateChange();
        xmlHttp.abort();
        if (this.timer != null) {
            this.timer.cancel();
        }
    }
}

From source file:com.gwtpro.html5.fileapi.client.upload.UploadRequestBuilder.java

License:Apache License

/**
 * Sends a POST request based to upload a file, on the current builder
 * configuration.//www  .  j av a2 s  . co m
 * 
 * @return a {@link UploadRequest} object that can be used to track the
 *         request
 * @throws RequestException
 *             if the call fails to initiate
 * @throws NullPointerException
 *             if a request callback has not been set
 */
public UploadRequest sendFile(File file) throws RequestException {
    if (this.callback == null) {
        throw new NullPointerException("callback has not been set");
    }
    XMLHttpRequest2 xmlHttpRequest = XMLHttpRequest2.create();
    final UploadRequest request = new UploadRequest(xmlHttpRequest, this.timeoutMillis, this.callback);
    // progress handler must be set before open!!!
    xmlHttpRequest.setOnUploadProgressHandler(new UploadProgressHandler() {

        @Override
        public void onProgress(int bytesUploaded) {
            UploadRequestBuilder.this.callback.onUploadProgress(request, bytesUploaded);
        }
    });
    try {
        if (this.user != null && this.password != null) {
            xmlHttpRequest.open("POST", this.url, this.user, this.password);
        } else if (this.user != null) {
            xmlHttpRequest.open("POST", this.url, this.user);
        } else {
            xmlHttpRequest.open("POST", this.url);
        }
    } catch (JavaScriptException e) {
        RequestPermissionException requestPermissionException = new RequestPermissionException(this.url);
        requestPermissionException.initCause(new RequestException(e.getMessage()));
        throw requestPermissionException;
    }
    if (this.headers != null) {
        for (Map.Entry<String, String> header : this.headers.entrySet()) {
            try {
                xmlHttpRequest.setRequestHeader(header.getKey(), header.getValue());
            } catch (JavaScriptException e) {
                throw new RequestException(e.getMessage());
            }
        }
    }
    xmlHttpRequest.setOnReadyStateChange(new ReadyStateChangeHandler() {

        public void onReadyStateChange(XMLHttpRequest xhr) {
            if (xhr.getReadyState() == XMLHttpRequest.DONE) {
                xhr.clearOnReadyStateChange();
                request.fireOnResponseReceived(UploadRequestBuilder.this.callback);
            }
        }
    });
    try {
        xmlHttpRequest.sendFile(file);
    } catch (JavaScriptException e) {
        throw new RequestException(e.getMessage());
    }
    return request;
}

From source file:elemental.js.util.Xhr.java

License:Apache License

private static void request(XMLHttpRequest xhr, String method, String url, String requestData,
        String contentType, Callback callback) {
    try {//from  w w w .j  av a 2  s .c o  m
        xhr.setOnReadyStateChange(new Handler(callback));
        xhr.open(method, url);
        xhr.setRequestHeader("Content-type", contentType);
        xhr.send(requestData);
    } catch (JavaScriptException e) {
        // Just fail.
        callback.onFail(xhr);
        xhr.clearOnReadyStateChange();
    }
}

From source file:elemental.js.util.Xhr.java

License:Apache License

private static void request(XMLHttpRequest xhr, String method, String url, final Callback callback) {
    try {/*from  ww w  .j a v a2  s.  co m*/
        xhr.setOnReadyStateChange(new Handler(callback));
        xhr.open(method, url);
        xhr.send();
    } catch (JavaScriptException e) {
        // Just fail.
        callback.onFail(xhr);
        xhr.clearOnReadyStateChange();
    }
}

From source file:io.reinert.requestor.RequestDispatcherImpl.java

License:Apache License

@Override
protected <D> void send(RequestOrder request, final Deferred<D> deferred, Class<D> resolveType,
        @Nullable Class<?> parametrizedType) {
    final HttpMethod httpMethod = request.getMethod();
    final String url = request.getUrl();
    final Headers headers = request.getHeaders();
    final Payload payload = request.getPayload();
    final ResponseType responseType = request.getResponseType();

    // Create XMLHttpRequest
    final XMLHttpRequest xmlHttpRequest = (XMLHttpRequest) XMLHttpRequest.create();

    // Open XMLHttpRequest
    try {//from w  w w .j a v  a  2 s  .  c  o m
        xmlHttpRequest.open(httpMethod.getValue(), url);
    } catch (JavaScriptException e) {
        RequestPermissionException requestPermissionException = new RequestPermissionException(url);
        requestPermissionException.initCause(new RequestException(e.getMessage()));
        deferred.reject(requestPermissionException);
        return;
    }

    // Set withCredentials
    xmlHttpRequest.setWithCredentials(request.isWithCredentials());

    // Fulfill headers
    try {
        setHeaders(headers, xmlHttpRequest);
    } catch (JavaScriptException e) {
        deferred.reject(new RequestException("Could not manipulate the XHR headers: " + e.getMessage()));
        return;
    }

    // Set responseType
    xmlHttpRequest.setResponseType(responseType.getValue());

    // Create RequestCallback
    final RequestCallback callback = getRequestCallback(request, xmlHttpRequest, deferred, resolveType,
            parametrizedType);

    // Create the underlying request from gwt.http module
    final com.google.gwt.http.client.Request gwtRequest = new com.google.gwt.http.client.Request(xmlHttpRequest,
            request.getTimeout(), callback);

    // Properly configure XMLHttpRequest's onreadystatechange
    xmlHttpRequest.setOnReadyStateChange(new ReadyStateChangeHandler() {
        public void onReadyStateChange(com.google.gwt.xhr.client.XMLHttpRequest xhr) {
            if (xhr.getReadyState() == XMLHttpRequest.DONE) {
                xhr.clearOnReadyStateChange();
                ((XMLHttpRequest) xhr).clearOnProgress();
                gwtRequest.fireOnResponseReceived(callback);
            }
        }
    });

    // Set XMLHttpRequest's onprogress if available binding to promise's progress
    xmlHttpRequest.setOnProgress(new ProgressHandler() {
        @Override
        public void onProgress(ProgressEvent progress) {
            deferred.notifyDownload(new RequestProgressImpl(progress));
        }
    });

    // Set XMLHttpRequest's upload onprogress if available binding to promise's progress
    xmlHttpRequest.setUploadOnProgress(new ProgressHandler() {
        @Override
        public void onProgress(ProgressEvent progress) {
            deferred.notifyUpload(new RequestProgressImpl(progress));
        }
    });

    // Pass the connection to the deferred to enable it to cancel the request if necessary (RECOMMENDED)
    deferred.setHttpConnection(getConnection(gwtRequest));

    // Send the request
    try {
        if (payload != null) {
            if (payload.isString() != null) {
                xmlHttpRequest.send(payload.isString());
            } else {
                xmlHttpRequest.send(payload.isJavaScriptObject());
            }
        } else {
            xmlHttpRequest.send();
        }
    } catch (JavaScriptException e) {
        deferred.reject(new RequestDispatchException("Could not send the XHR: " + e.getMessage()));
    }
}

From source file:org.atmosphere.gwt.client.impl.HTTPRequestCometTransport.java

License:Apache License

@Override
public void connect(int connectionCount) {
    init();/*from w  w  w .  jav a2 s .  c om*/
    xmlHttpRequest = XMLHttpRequest.create();
    try {
        xmlHttpRequest.open("GET", getUrl(connectionCount));
        xmlHttpRequest.setRequestHeader("Accept", "application/comet");
        xmlHttpRequest.setOnReadyStateChange(new ReadyStateChangeHandler() {
            @Override
            public void onReadyStateChange(XMLHttpRequest request) {
                if (!aborted) {
                    switch (request.getReadyState()) {
                    case XMLHttpRequest.LOADING:
                        onReceiving(request.getStatus(), request.getResponseText());
                        if (needPolling()) {
                            pollingTimer.scheduleRepeating(POLLING_INTERVAL);
                        }
                        break;
                    case XMLHttpRequest.DONE:
                        onLoaded(request.getStatus(), request.getResponseText());
                        pollingTimer.cancel();
                        break;
                    }
                } else {
                    request.clearOnReadyStateChange();
                    if (request.getReadyState() != XMLHttpRequest.DONE) {
                        request.abort();
                    }
                }
            }
        });
        xmlHttpRequest.send();
    } catch (JavaScriptException e) {
        if (xmlHttpRequest != null) {
            xmlHttpRequest.abort();
            xmlHttpRequest = null;
        }
        listener.onError(new RequestException(e.getMessage()), false);
    }
}