fr.mncc.minus.ajax.client.Ajax.java Source code

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Here is the source code for fr.mncc.minus.ajax.client.Ajax.java

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/**
 * Copyright (c) 2012 MNCC
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * @author http://www.mncc.fr
 */
package fr.mncc.minus.ajax.client;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.http.client.*;
import com.google.gwt.user.client.rpc.AsyncCallback;

public class Ajax {

    public static <T extends JavaScriptObject> void get(String url, String data, AsyncCallback<T> callback) {
        sendRequest(RequestBuilder.GET, url, data, callback);
    }

    public static <T extends JavaScriptObject> void post(String url, String data, AsyncCallback<T> callback) {
        sendRequest(RequestBuilder.POST, url, data, callback);
    }

    public static <T extends JavaScriptObject> void put(String url, String data, AsyncCallback<T> callback) {
        sendRequest(RequestBuilder.PUT, url, data, callback);
    }

    public static <T extends JavaScriptObject> void delete(String url, String data, AsyncCallback<T> callback) {
        sendRequest(RequestBuilder.DELETE, url, data, callback);
    }

    public static <T extends JavaScriptObject> void getCrossDomain(String url, AsyncCallback<T> callback) {
        com.google.gwt.jsonp.client.JsonpRequestBuilder requestBuilder = new com.google.gwt.jsonp.client.JsonpRequestBuilder();
        requestBuilder.requestObject(url, callback);
    }

    public static void postCrossDomain(String url, AsyncCallback<Void> callback) {
        com.google.gwt.jsonp.client.JsonpRequestBuilder requestBuilder = new com.google.gwt.jsonp.client.JsonpRequestBuilder();
        requestBuilder.send(url, callback);
    }

    public static void postCrossDomain(String url) {
        com.google.gwt.jsonp.client.JsonpRequestBuilder requestBuilder = new com.google.gwt.jsonp.client.JsonpRequestBuilder();
        requestBuilder.send(url);
    }

    private static <T extends JavaScriptObject> void sendRequest(RequestBuilder.Method httpMethod, String url,
            String data, final AsyncCallback<T> callback) {
        try {
            RequestBuilder requestBuilder = new RequestBuilder(httpMethod, url);
            requestBuilder.setHeader("Accept", "application/json");
            requestBuilder.setHeader("Content-Type", "application/json");
            requestBuilder.sendRequest(data, new RequestCallback() {

                @Override
                public void onResponseReceived(Request request, Response response) {
                    if (response.getStatusCode() != Response.SC_OK) {
                        if (callback != null) {
                            callback.onFailure(new Exception("status code = " + response.getStatusCode()
                                    + ", status text = " + response.getStatusText()));
                        }
                    } else {
                        if (callback != null) {
                            callback.onSuccess(JsonParser.<T>fromJson(response.getText()));
                        }
                    }
                }

                @Override
                public void onError(Request request, Throwable exception) {
                    if (callback != null) {
                        callback.onFailure(exception);
                    }
                }
            });
        } catch (RequestException e) {
            GWT.log(e.toString());
        }
    }
}