content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://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: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://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.ui.client;
  
  import org.opencms.ui.report.CmsReportWidget;
  import org.opencms.ui.shared.rpc.I_CmsReportClientRpc;
  import org.opencms.ui.shared.rpc.I_CmsReportServerRpc;
  
  import com.google.gwt.core.client.Scheduler;
  import com.google.gwt.core.client.Scheduler.RepeatingCommand;
  import com.google.gwt.user.client.ui.Widget;
  import com.vaadin.client.ui.AbstractComponentConnector;
  import com.vaadin.shared.ui.Connect;
  
  /**
   * Connector for the report widget.<p>
   */
  @Connect(CmsReportWidget.class)
  public class CmsReportWidgetConnector extends AbstractComponentConnector implements I_CmsReportClientRpc {
  
      /** Serial version id. */
      private static final long serialVersionUID = 1L;
  
      /** True if we know the report is finished (i.e. the last report update (null) has been received. */
      private boolean m_reportFinished;
  
      /** True if the connector has been unregistered. */
      private boolean m_unregistered;
  
      /**
       * Creates a new instance.<p>
       */
      public CmsReportWidgetConnector() {
  
          registerRpc(I_CmsReportClientRpc.class, this);
          RepeatingCommand command = new RepeatingCommand() {
  
              @SuppressWarnings("synthetic-access")
              public boolean execute() {
  
                  if (m_unregistered || m_reportFinished) {
                      return false;
                  }
  
                  getRpcProxy(I_CmsReportServerRpc.class).requestReportUpdate();
                  return true;
              }
  
          };
          Scheduler.get().scheduleFixedDelay(command, 750);
  
      }
  
      /**
       * @see org.opencms.ui.shared.rpc.I_CmsReportClientRpc#handleReportUpdate(java.lang.String)
       */
      public void handleReportUpdate(String reportUpdate) {
  
          if (reportUpdate == null) {
              m_reportFinished = true;
          } else {
              CmsClientReportWidget widget = (CmsClientReportWidget)getWidget();
              widget.append(reportUpdate);
          }
      }
  
      /**
       * @see com.vaadin.client.ui.AbstractComponentConnector#onUnregister()
       */
      @Override
      public void onUnregister() {
  
          m_unregistered = true;
          super.onUnregister();
      }
  
      /**
       * @see com.vaadin.client.ui.AbstractComponentConnector#createWidget()
       */
      @Override
      protected Widget createWidget() {
  
          return new CmsClientReportWidget();
      }
  
  }
  