Package org.bigbluebutton.presentation.imp

Source Code of org.bigbluebutton.presentation.imp.SwfSlidesGenerationProgressNotifier

/**
* BigBlueButton open source conferencing system - http://www.bigbluebutton.org/
*
* Copyright (c) 2012 BigBlueButton Inc. and by respective authors (see below).
*
* This program 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 3.0 of the License, or (at your option) any later
* version.
*
* BigBlueButton 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.
*
* You should have received a copy of the GNU Lesser General Public License along
* with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
*
*/

package org.bigbluebutton.presentation.imp;

import java.util.Map;

import org.apache.commons.lang.StringEscapeUtils;
import org.bigbluebutton.api.messaging.MessagingConstants;
import org.bigbluebutton.api.messaging.MessagingService;
import org.bigbluebutton.presentation.ConversionMessageConstants;
import org.bigbluebutton.presentation.ConversionUpdateMessage;
import org.bigbluebutton.presentation.GeneratedSlidesInfoHelper;
import org.bigbluebutton.presentation.UploadedPresentation;
import org.bigbluebutton.presentation.ConversionUpdateMessage.MessageBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.gson.Gson;

public class SwfSlidesGenerationProgressNotifier {
  private static Logger log = LoggerFactory.getLogger(SwfSlidesGenerationProgressNotifier.class);

  private MessagingService messagingService;
 
  private GeneratedSlidesInfoHelper generatedSlidesInfoHelper;
     
  private void notifyProgressListener(Map<String, Object> msg) { 
    if(messagingService != null){
      Gson gson= new Gson();
      String updateMsg = gson.toJson(msg);
      log.debug("SENDING: " + updateMsg);
      messagingService.send(MessagingConstants.TO_PRESENTATION_CHANNEL, updateMsg);
      log.debug("SENT: " + updateMsg);
    } else {
      log.warn("MessagingService has not been set");
    }
  }

  public void sendConversionUpdateMessage(Map<String, Object> message) {
    notifyProgressListener(message);
  }
 
  public void sendConversionUpdateMessage(int slidesCompleted, UploadedPresentation pres) {
    MessageBuilder builder = new ConversionUpdateMessage.MessageBuilder(pres);
    builder.messageKey(ConversionMessageConstants.GENERATED_SLIDE_KEY);
    builder.numberOfPages(pres.getNumberOfPages());
    builder.pagesCompleted(slidesCompleted);
    notifyProgressListener(builder.build().getMessage());
  }
 
  public void sendCreatingThumbnailsUpdateMessage(UploadedPresentation pres) {
    MessageBuilder builder = new ConversionUpdateMessage.MessageBuilder(pres);
    builder.messageKey(ConversionMessageConstants.GENERATING_THUMBNAIL_KEY);
    notifyProgressListener(builder.build().getMessage());   
  }
 
  public void sendConversionCompletedMessage(UploadedPresentation pres) { 
    if (generatedSlidesInfoHelper == null) {
      log.error("GeneratedSlidesInfoHelper was not set. Could not notify interested listeners.");
      return;
    }
   
    MessageBuilder builder = new ConversionUpdateMessage.MessageBuilder(pres);
    builder.messageKey(ConversionMessageConstants.CONVERSION_COMPLETED_KEY);   
    builder.numberOfPages(pres.getNumberOfPages());
    builder.presBaseUrl(pres);
    notifyProgressListener(builder.build().getMessage())
  }
 
  public void setMessagingService(MessagingService m) {
    messagingService = m;
  }
 
  public void setGeneratedSlidesInfoHelper(GeneratedSlidesInfoHelper helper) {
    generatedSlidesInfoHelper = helper;
  }

  public void sendCreatingTextFilesUpdateMessage(UploadedPresentation pres) {
    MessageBuilder builder = new ConversionUpdateMessage.MessageBuilder(pres);
    builder.messageKey(ConversionMessageConstants.GENERATING_TEXTFILES_KEY);
    notifyProgressListener(builder.build().getMessage())
  }

  public void sendCreatingPngImagesUpdateMessage(UploadedPresentation pres) {
    MessageBuilder builder = new ConversionUpdateMessage.MessageBuilder(pres);
    builder.messageKey(ConversionMessageConstants.GENERATING_PNGIMAGES_KEY);
    notifyProgressListener(builder.build().getMessage());
  }
}
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