ViewSelectorDefault.java

/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jasig.portlet.emailpreview.controller;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import javax.annotation.Resource;
import javax.portlet.PortletRequest;
import org.jasig.portlet.emailpreview.controller.EmailSummaryController.View;
import org.springframework.stereotype.Service;

/**
 * ViewSelectorDefaultImpl provides a default implementation of IViewSelector that returns JSP view
 * names based on a combination of the browser user agent string and the portlet window state.
 * Requests which indicate that the user is interacting with the portlet via a mobile device, or
 * that the portlet is currently not in maximized mode will result in a "narrow" view of the
 * calendar. Non-mobile devices using the portlet in the maximized window state will be shown the
 * "wide" view of the portlet.
 *
 * @author Jen Bourey
 * @version $Revision: 47637 $
 */
@Service
public class ViewSelectorDefault {

  private List<Pattern> mobileDeviceRegexes = null;

  /**
   * Set a list of regex patterns for user agents which should be considered to be mobile devices.
   *
   * @param patterns
   */
  @Resource(name = "mobileDeviceRegexes")
  public void setMobileDeviceRegexes(List<String> patterns) {
    this.mobileDeviceRegexes = new ArrayList<Pattern>();
    for (String pattern : patterns) {
      this.mobileDeviceRegexes.add(Pattern.compile(pattern));
    }
  }

  public View getEmailPreviewViewName(PortletRequest request) {
    String userAgent = request.getProperty("user-agent");
    View showView = View.PREVIEW;

    // check to see if this is a mobile device
    if (this.mobileDeviceRegexes != null && userAgent != null) {
      for (Pattern regex : this.mobileDeviceRegexes) {
        if (regex.matcher(userAgent).matches()) {
          showView = View.MOBILEPREVIEW;
          ;
        }
      }
    }
    return showView;
  }

  public String getEventListViewName(PortletRequest request) {
    return "ajaxEventList";
  }
}