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/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.help.internal.webapp.data;
import javax.servlet.*;
import javax.servlet.http.*;

import org.eclipse.help.internal.base.*;
/**
 * Helper for pages in navigation frames. Used enabling/disabling activity
 * filtering
 */
public class ActivitiesData extends RequestData {
  /**
   * Constructs the data for a request.
   * 
   * @param context
   * @param request
   */
  public ActivitiesData(ServletContext context, HttpServletRequest request,
      HttpServletResponse response) {
    super(context, request, response);
    String changeShowAll = request.getParameter("showAll"); //$NON-NLS-1$
    if (changeShowAll != null) {
      if ("off".equalsIgnoreCase(changeShowAll)) { //$NON-NLS-1$
        HelpBasePlugin.getActivitySupport().setFilteringEnabled(true);
      } else if ("on".equalsIgnoreCase(changeShowAll)) { //$NON-NLS-1$
        HelpBasePlugin.getActivitySupport().setFilteringEnabled(false);
      } else {
        // not supported value
      }
    } else {
      // no change to afilter
    }
    String confirmShowAll = request.getParameter("showconfirm"); //$NON-NLS-1$
    if ("false".equalsIgnoreCase(confirmShowAll)) { //$NON-NLS-1$
      preferences.setDontConfirmShowAll(true);
    }
  }
  /**
   * @return Checks if filtering is enabled.
   */
  public boolean isActivityFiltering() {
    return HelpBasePlugin.getActivitySupport().isFilteringEnabled();
  }
  /**
   * Gives state of show all topics button
   * 
   * @return "hidden", "off", or "on"
   */
  public String getButtonState() {
    if (!HelpBasePlugin.getActivitySupport().isUserCanToggleFiltering())
      return "hidden"; //$NON-NLS-1$
    else if (HelpBasePlugin.getActivitySupport().isFilteringEnabled())
      return "off"; //$NON-NLS-1$
    else
      return "on"; //$NON-NLS-1$
  }
}
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