109 lines
3.1 KiB
Java
109 lines
3.1 KiB
Java
/**
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*
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*/
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package org.gcube.portlets.user.workspace.client.util;
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import org.gcube.portlets.user.workspace.client.ConstantsExplorer;
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import org.gcube.portlets.user.workspace.client.view.windows.InfoDisplayMessage;
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import org.gcube.portlets.user.workspace.client.view.windows.MessageBoxAlert;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.http.client.Request;
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import com.google.gwt.http.client.RequestBuilder;
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import com.google.gwt.http.client.RequestCallback;
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import com.google.gwt.http.client.RequestException;
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import com.google.gwt.http.client.Response;
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import com.google.gwt.user.client.rpc.AsyncCallback;
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/**
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* @Jun 24, 2013
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*
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*/
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public class RequestBuilderWorkspaceValidateItem {
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/**
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*
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*/
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protected static final int TIME_INFO_DISPLAY = 1500; //milliseconds
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private AsyncCallback<WindowOpenParameter> callback;
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private String parameters;
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/**
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*
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* @param method
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* @param servletName the name of the servlet that must be called
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* @param params param=value¶m1=value1&...
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* @param name the name of the window (e.g. "_blank")
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* @param callback
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* @throws Exception
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*/
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public RequestBuilderWorkspaceValidateItem(RequestBuilder.Method method, String servletName, final String params, final String name, final AsyncCallback<WindowOpenParameter> callback) throws Exception{
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this.callback = callback;
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this.parameters = params;
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if(servletName==null)
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return;
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servletName = servletName.isEmpty()?"/":servletName;
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if(!servletName.contains("/"))
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servletName+="/"+servletName;
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if(parameters==null)
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parameters = ConstantsExplorer.VALIDATEITEM+"=true";
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else
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parameters +="&"+ConstantsExplorer.VALIDATEITEM+"=true";
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String urlRequest = servletName+"?"+parameters;
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GWT.log("request builder for: "+urlRequest);
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RequestBuilder requestBuilder = new RequestBuilder(method, urlRequest);
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new InfoDisplayMessage("Download", "Requesting...", TIME_INFO_DISPLAY);
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try {
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requestBuilder.sendRequest("", new RequestCallback() {
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@Override
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public void onResponseReceived(Request request, Response response) {
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int status = response.getStatusCode();
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// System.out.println("status code is "+status);
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if(!(status==200) && !(status==202)){ //NOT IS STATUS SC_ACCEPTED
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handleError("Sorry, an error occurred on retriving the file. "+response.getText()); //ERROR STATUS
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}else{ //OK STATUS
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if(callback!=null)
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callback.onSuccess(new WindowOpenParameter(name, "", params));
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}
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}
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@Override
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public void onError(Request request, Throwable exception) {
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// System.out.println("exception message is "+exception.getMessage());
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handleError(exception.getMessage());
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}
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});
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} catch (RequestException e) {
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throw new Exception("Sorry, an error occurred while contacting server, try again");
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}
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}
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public void handleError(String message){
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if(callback!=null)
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callback.onFailure(new Exception(message));
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else
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new MessageBoxAlert("Error", message, null);
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}
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}
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