com.dimdim.conference.ui.model.client.helper.ProgressCheckUrlReader.java Source code

Introduction

Here is the source code for com.dimdim.conference.ui.model.client.helper.ProgressCheckUrlReader.java

Source

/*
 **************************************************************************
 *                                                                        *
 *               DDDDD   iii             DDDDD   iii                      *
 *               DD  DD      mm mm mmmm  DD  DD      mm mm mmmm           *
 *               DD   DD iii mmm  mm  mm DD   DD iii mmm  mm  mm          *
 *               DD   DD iii mmm  mm  mm DD   DD iii mmm  mm  mm          *
 *               DDDDDD  iii mmm  mm  mm DDDDDD  iii mmm  mm  mm          *
 *                                                                        *
 **************************************************************************
 **************************************************************************
 *                                                                        *
 * Part of the DimDim V 1.0 Codebase (http://www.dimdim.com)             *
 *                                                                        *
 * Copyright (c) 2007 Dimdim Inc. All Rights Reserved.                 *
 *                                                                        *
 *                                                                        *
 * This code is licensed under the DimDim License                         *
 * For details please visit http://www.dimdim.com/license                 *
 *                                                                        *
 **************************************************************************
 */

package com.dimdim.conference.ui.model.client.helper;

//import com.dimdim.conference.ui.json.client.JSONurlReader;
//import com.google.gwt.user.client.ResponseTextHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.Timer;

/**
 * @author Jayant Pandit
 * @email Jayant.Pandit@communiva.com
 *
 * This object read a given url at specified interval regularly till the
 * action that initiated the progress check is cancelled or completed.
 */
public class ProgressCheckUrlReader implements FlashXmlCallListener {
    public static final String PROGRESS_CHECK = "PROGRESS_CHECK";

    protected String checkUrl;
    protected int checkInterval;
    protected ProgressCheckListener progressCheckListener;

    //   protected   JSONurlReader   urlReader;
    protected Timer timer;
    protected boolean checkStopped = false;

    public ProgressCheckUrlReader(final String checkUrl, int checkInterval,
            ProgressCheckListener progressCheckListener) {
        this.checkInterval = checkInterval;
        this.checkUrl = checkUrl;
        this.progressCheckListener = progressCheckListener;
        FlashXmlCallInterface.getInterface().addUrlListener(PROGRESS_CHECK, this);

        //      this.urlReader = new JSONurlReader(checkUrl,this);
        this.timer = new Timer() {
            public void run() {
                try {
                    //               Window.alert("JSONurlReader reading url:"+urlReader.toString());
                    //               urlReader.doReadURL();
                    FlashXmlCallInterface.getInterface().callXmlUrlInFlash(PROGRESS_CHECK, checkUrl, 20000);
                } catch (Exception e) {
                    Window.alert(e.toString());
                }
            }
        };
    }

    public void startCheck() {
        this.checkStopped = false;
        this.timer.schedule(this.checkInterval);
    }

    public void stopCheck() {
        this.checkStopped = true;
    }

    /**
     * If the 
     */
    public void onCompletion(String result, String responseText) {
        //      Window.alert(responseText);
        ProgressCheckResponse pcr = this.progressCheckListener.analyzeResponseText(responseText);
        if (pcr != null) {
            if (pcr.isActionComplete() || pcr.isActionCancelled()) {
                //   The action was either cancelled or completed. Either way
                //   progress checkin most probably will have no action to
                //   take on this case.
            } else if (!this.checkStopped) {
                //   Schedule the timer again.
                this.timer.schedule(this.checkInterval);
            }
            this.progressCheckListener.processResponse(pcr);
        } else {
            //   This should never happen. However for the sake of completeness.....
        }
    }

    public void onInterfaceResponse(String message) {
        this.progressCheckListener.onInterfaceResponse(message);
    }
}