org.opencms.ugc.client.CmsRpcCallHelper Maven / Gradle / Ivy
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/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* For further information about Alkacon Software, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.ugc.client;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
/**
* Helper class to execute an RPC call with a custom callback to enable/disable the wait animation.
*/
public class CmsRpcCallHelper {
/** Counter to keep track of running requests. */
private CmsRequestCounter m_requestCounter;
/**
* Creates a new instance.
*
* @param counter the request counter to keep track of running requests
*/
public CmsRpcCallHelper(CmsRequestCounter counter) {
m_requestCounter = counter;
}
/**
* Executes the RPC call.
*
* @param requestBuilder the request builder returned by the service interface
*/
@SuppressWarnings("synthetic-access")
public void executeRpc(RequestBuilder requestBuilder) {
final RequestCallback callback = requestBuilder.getCallback();
RequestCallback callbackWrapper = new RequestCallback() {
public void onError(com.google.gwt.http.client.Request request, Throwable exception) {
m_requestCounter.decrement();
callback.onError(request, exception);
}
public void onResponseReceived(
com.google.gwt.http.client.Request request,
com.google.gwt.http.client.Response response) {
m_requestCounter.decrement();
callback.onResponseReceived(request, response);
}
};
requestBuilder.setCallback(callbackWrapper);
m_requestCounter.increment();
try {
requestBuilder.send();
} catch (Exception e) {
m_requestCounter.decrement();
}
}
}