org.jasig.portlet.emailpreview.controller.AjaxUpdatePageSizeController.java Source code

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Here is the source code for org.jasig.portlet.emailpreview.controller.AjaxUpdatePageSizeController.java

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/**
 * 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:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.HashMap;
import java.util.Map;

import javax.portlet.PortletPreferences;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.portlet.ModelAndView;
import org.springframework.web.portlet.bind.annotation.ResourceMapping;

/**
 * Responsible for remembering the user's pageSize selection with 
 * <code>PortletPreferences</code>.
 *
 * @author Drew Wills, drew@unicon.net
 */
@Controller
@RequestMapping("VIEW")
public class AjaxUpdatePageSizeController {

    private static final String STATUS_KEY = "success";

    private final Log log = LogFactory.getLog(this.getClass());

    @ResourceMapping(value = "updatePageSize")
    public ModelAndView updatePageSize(ResourceRequest req, ResourceResponse res,
            @RequestParam("newPageSize") int newPageSize) throws Exception {

        PortletPreferences prefs = req.getPreferences();

        // Define view and generate model
        Map<String, Object> model = new HashMap<String, Object>();

        if (!prefs.isReadOnly(EmailSummaryController.PAGE_SIZE_PREFERENCE)) {
            prefs.setValue(EmailSummaryController.PAGE_SIZE_PREFERENCE, Integer.toString(newPageSize));
            prefs.store();
            model.put(STATUS_KEY, true);
        } else {
            if (log.isDebugEnabled()) {
                String msg = "Ignoring change to pageSize for the following "
                        + "user because the preference is read only:  " + req.getRemoteUser();
                log.debug(msg);
            }
            res.setProperty(ResourceResponse.HTTP_STATUS_CODE,
                    Integer.toString(HttpServletResponse.SC_UNAUTHORIZED));
            model.put("error", "Not authorized");
        }

        return new ModelAndView("json", model);

    }

}