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

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

  1. HOME
  2. Java
  3. com.google.gwt
  4. com.google.gwt.http.client.*
  5. RequestCallback
  6. RequestCallback

Introduction

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

Prototype

RequestCallback

Source Link

Usage

From source file:com.google.gwt.sample.stockwatcher.client.PetrolTracker.java

/**
 * Add stock to FlexTable. Executed when the user clicks the addStockButton or
 * presses enter in the newSymbolTextBox.
         /*from   w w w .  j  a v a 2  s  .c  o  m*/
private void addFillups() {
  final String symbol = newSymbolTextBox.getText().toUpperCase().trim();
  newSymbolTextBox.setFocus(true);
        
  // Stock code must be between 1 and 10 chars that are numbers, letters, or dots.
  if (!symbol.matches("^[0-9a-zA-Z\\.]{1,10}$")) {
    Window.alert("'" + symbol + "' is not a valid symbol.");
    newSymbolTextBox.selectAll();
    return;
  }
        
  newSymbolTextBox.setText("");
        
  // Don't add the stock if it's already in the table.
  if (stocks.contains(symbol))
    return;
        
  // Add the stock to the table.
  int row = fillupFlexTable.getRowCount();
  stocks.add(symbol);
  fillupFlexTable.setText(row, 0, symbol);
  fillupFlexTable.setWidget(row, 2, new Label());
  fillupFlexTable.getCellFormatter().addStyleName(row, 1, "watchListNumericColumn");
  fillupFlexTable.getCellFormatter().addStyleName(row, 2, "watchListNumericColumn");
  fillupFlexTable.getCellFormatter().addStyleName(row, 3, "watchListRemoveColumn");
        
  // Add a button to remove this stock from the table.
  Button removeStockButton = new Button("x");
  removeStockButton.addStyleDependentName("remove");
  removeStockButton.addClickHandler(new ClickHandler() {
    public void onClick(ClickEvent event) {
int removedIndex = stocks.indexOf(symbol);
stocks.remove(removedIndex);
fillupFlexTable.removeRow(removedIndex + 1);
    }
  });
  fillupFlexTable.setWidget(row, 3, removeStockButton);
        
  // Get the stock price.
  refreshWatchList();
        
}
*/
private void refreshFillups() {
    String url = JSON_URL;

    final String encodedUrl = URL.encode(url);
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, encodedUrl);
    try {
        @SuppressWarnings("unused")
        Request request = builder.sendRequest(null, new RequestCallback() {
            public void onError(Request request, Throwable exception) {
                displayError("Couldn't retrieve JSON on url:" + encodedUrl);
            }

            public void onResponseReceived(Request request, Response response) {
                if (200 == response.getStatusCode()) {
                    String jsonString = response.getText();
                    updateTable(asArrayOfFillupData(jsonString));
                } else {
                    displayError("Couldn't retrieve JSON (" + response.getStatusText() + ")");
                }
            }
        });
    } catch (RequestException e) {
        displayError("Couldn't retrieve JSON");
    }

}

From source file:com.google.gwt.sample.stockwatcher.client.ui.StockWatcherViewImpl.java

/**
 * Generate random stock prices./* w  w w.  j av  a 2 s . c o  m*/
 */
private void refreshWatchList() {
    if (stocks.size() == 0) {
        return;
    }
    String url = JSON_URL;

    // Append watch list stock symbols to query URL.
    Iterator iter = stocks.iterator();
    while (iter.hasNext()) {
        url += iter.next();
        if (iter.hasNext()) {
            url += "+";
        }
    }

    url = URL.encode(url);

    // Send request to server and catch any errors.
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);

    try {
        Request request = builder.sendRequest(null, new RequestCallback() {
            public void onError(Request request, Throwable exception) {
                displayError("Couldn't retrieve JSON");
            }

            public void onResponseReceived(Request request, Response response) {
                if (200 == response.getStatusCode()) {
                    updateTable(asArrayOfStockData(response.getText()));
                } else {
                    displayError("Couldn't retrieve JSON (" + response.getStatusText() + ")");
                }
            }
        });
    } catch (RequestException e) {
        displayError("Couldn't retrieve JSON");
    }
}

From source file:com.google.gwt.sample.stockwatcher_json.client.StockWatcherJSON.java

private void randomizeNumber() {
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, JSON_RANDOMIZE);

    try {/*from   w  ww .  j av  a2  s .  c  om*/
        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()) {
                    StockWatcherJSON.this.randomizeLabel.setText(response.getText());
                    StockWatcherJSON.this.randomizeLabel.setVisible(true);
                } else {
                    displayError("Couldn't retrieve JSON (" + response.getStatusText() + ")");
                    StockWatcherJSON.this.randomizeLabel.setVisible(false);
                }
            }
        });
    } catch (RequestException e) {
        displayError("Couldn't retrieve JSON : " + e.getMessage());
        StockWatcherJSON.this.randomizeLabel.setVisible(false);
    }
}

From source file:com.google.gwt.sample.stockwatcher_json.client.StockWatcherJSON.java

private void refreshWatchList() {
    if (stocks.size() == 0) {
        return;//from  www. j a v a2  s .co  m
    }

    String url = JSON_STOCK_PRICES_URL;

    // Append watch list stock symbols to query URL.
    Iterator<String> iter = stocks.iterator();
    while (iter.hasNext()) {
        url += iter.next();
        if (iter.hasNext()) {
            url += "+";
        }
    }

    url = URL.encode(url);
    GWT.log("url = " + url);
    // Send request to server and catch any errors.
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);

    try {
        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()) {
                    updateTable(asArrayOfStockData(response.getText()));
                } else {
                    displayError("Couldn't retrieve JSON (" + response.getStatusText() + ")");
                }
            }
        });
    } catch (RequestException e) {
        displayError("Couldn't retrieve JSON : " + e.getMessage());
    }
}

From source file:com.google.gwt.sample.userwatcher.client.PageWithoutPhoto.java

private void refreshWatchList() {

    if (stocks.size() == 0) {
        return;/*from ww w  .  jav  a  2  s  .  com*/
    }

    String url = JSON_URL;

    // Append watch list stock symbols to query URL.
    Iterator<String> iter = stocks.iterator();
    while (iter.hasNext()) {
        url += iter.next();
        if (iter.hasNext()) {
            url += "+";
        }
    }

    url = URL.encode(url);

    // Send request to server and catch any errors.
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);

    try {
        Request request = builder.sendRequest(null, new RequestCallback() {
            public void onError(Request request, Throwable exception) {
                displayError("Couldn't retrieve JSON");
            }

            public void onResponseReceived(Request request, Response response) {
                if (200 == response.getStatusCode()) {
                    updateTable(JsonUtils.<JsArray<StockData>>safeEval(response.getText()));
                } else {
                    displayError("Couldn't retrieve JSON (" + response.getStatusText() + ")");
                }
            }
        });
    } catch (RequestException e) {
        displayError("Couldn't retrieve JSON");
    }

}

From source file:com.google.gwt.sample.userwatcher.client.UploadImage.java

private void send() {
    cp.showLoading(true);//from   w  ww . j  a v  a 2  s  .  c o m

    String boundary = createBoundary();

    String requestData = getRequestData(boundary);

    //System.out.println(requestData);
    //url = "/TestOut/";

    //Window.alert("requestData=" + requestData);
    RootPanel.get().add(new HTML("<br>requestData=" + requestData));

    RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, url);
    builder.setHeader("Content-Type", "multipart/form-data; boundary=" + boundary);
    builder.setHeader("Content-Length", Long.toString(requestData.length()));
    try {
        builder.sendRequest(requestData, new RequestCallback() {
            public void onResponseReceived(Request request, Response response) {
                cp.showLoading(false);
                if (response.getStatusCode() == 200) {
                    processResponse(response);
                }
            }

            public void onError(Request request, Throwable exception) {
                fireChange(EventManager.FILE_DONEUPLOADING);
                cp.showLoading(false);
                exception.printStackTrace();
            }
        });
    } catch (RequestException e) {
        cp.showLoading(false);
        e.printStackTrace();
    }
}

From source file:com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport.java

License:Apache License

/**
 * Creates a RequestCallback that maps the HTTP response onto the
 * {@link com.google.web.bindery.requestfactory.shared.RequestTransport.TransportReceiver
 * TransportReceiver} interface./*from   w w  w  . j a  v  a 2s  .c  o m*/
 * 
 * @param receiver a
 *          {@link com.google.web.bindery.requestfactory.shared.RequestTransport.TransportReceiver
 *          TransportReceiver}
 * @return a {@link RequestCallback} instance
 */
protected RequestCallback createRequestCallback(final TransportReceiver receiver) {
    return new RequestCallback() {

        public void onError(Request request, Throwable exception) {
            wireLogger.log(Level.SEVERE, SERVER_ERROR, exception);
            receiver.onTransportFailure(new ServerFailure(exception.getMessage()));
        }

        public void onResponseReceived(Request request, Response response) {
            wireLogger.finest("Response received");
            if (Response.SC_OK == response.getStatusCode()) {
                String text = response.getText();
                receiver.onTransportSuccess(text);
            } else {
                String message = SERVER_ERROR + " " + response.getStatusCode() + " " + response.getText();
                wireLogger.severe(message);
                receiver.onTransportFailure(new ServerFailure(message));
            }
        }
    };
}

From source file:com.googlesource.gerrit.plugins.xdocs.client.XDocApi.java

License:Apache License

public static void checkHtml(String url, final AsyncCallback<VoidResult> callback) {
    RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);
    try {//w  w w .  ja v  a 2s .co  m
        builder.sendRequest(null, new RequestCallback() {
            @Override
            public void onResponseReceived(Request request, Response response) {
                int status = response.getStatusCode();
                if (200 <= status && status < 300) {
                    callback.onSuccess(VoidResult.create());
                } else {
                    callback.onFailure(new RequestException(status + " " + response.getStatusText()));
                }
            }

            @Override
            public void onError(Request request, Throwable caught) {
                callback.onFailure(caught);
            }
        });
    } catch (RequestException e) {
        callback.onFailure(e);
    }
}

From source file:com.gsr.myschool.common.client.request.ConvocationReportRequestBuilder.java

License:Apache License

public void sendRequest(ValueProxy data) {
    AutoBean autobean = AutoBeanUtils.getAutoBean(data);
    String requestdata = AutoBeanCodex.encode(autobean).getPayload();
    setRequestData(requestdata);//w ww.  j  av  a 2 s  .c  o m
    setCallback(new RequestCallback() {
        @Override
        public void onResponseReceived(Request request, Response response) {
            if (GWT.isScript()) {
                Window.open("/preinscription/resource/convocationReport?fileName=" + response.getText(),
                        "_blank", "");
            } else {
                Window.open("/resource/convocationReport?fileName=" + response.getText(), "_blank", "");
            }
        }

        @Override
        public void onError(Request request, Throwable exception) {
        }
    });
    try {
        send();
    } catch (RequestException e) {
        e.printStackTrace();
    }
}

From source file:com.gsr.myschool.common.client.request.ExcelRequestBuilder.java

License:Apache License

public void sendRequest(ValueProxy data) {
    AutoBean autobean = AutoBeanUtils.getAutoBean(data);
    String requestdata = AutoBeanCodex.encode(autobean).getPayload();
    setRequestData(requestdata);// w w  w. j  av a  2s.  c  o  m
    setCallback(new RequestCallback() {
        @Override
        public void onResponseReceived(Request request, Response response) {
            if (GWT.isScript()) {
                Window.open("/preinscription/resource/excel?fileName=" + response.getText(), "_blank", "");
            } else {
                Window.open("/resource/excel?fileName=" + response.getText(), "_blank", "");
            }
        }

        @Override
        public void onError(Request request, Throwable exception) {
        }
    });
    try {
        send();
    } catch (RequestException e) {
        e.printStackTrace();
    }
}