com.blogspot.jmelon.portlet.quiz.controller.QuizDefaultsController.java Source code

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Here is the source code for com.blogspot.jmelon.portlet.quiz.controller.QuizDefaultsController.java

Source

package com.blogspot.jmelon.portlet.quiz.controller;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Enumeration;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletPreferences;
import javax.portlet.PortletRequest;
import javax.portlet.ReadOnlyException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.ValidatorException;

import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.portlet.bind.annotation.ActionMapping;

import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.security.permission.PermissionChecker;
import com.liferay.portal.service.permission.PortletPermissionUtil;
import com.liferay.portal.theme.ThemeDisplay;

/**
 * See the file "LICENSE" for the full license governing this code.
 * 
 * @author <a href="jmelon.blogspot.com">Micha Mela</a> @
 */
@Controller
@RequestMapping(QuizDefaultsController.MODE)
public class QuizDefaultsController {

    public static final String MODE = "EDIT_DEFAULTS";

    private static final Logger LOGGER = LoggerFactory.getLogger(QuizDefaultsController.class);

    // private static final String BLANK = "";
    //
    private static final String QUIZ_PREFS = "quizPrefs";
    // views
    // private static final String JSON_VIEW = "jsonView";
    private static final String EDIT_JSP = "quiz/edit_defaults";
    //
    private static final String RESOLUTION = "resolution";
    private static final String SUCCESS = "success";
    private static final String FAILED = "failed";

    @Autowired
    MessageSource messageSource;

    @RequestMapping
    public String view(RenderRequest request, RenderResponse response, Model model)
            throws JsonParseException, JsonMappingException, IOException, PortalException, SystemException {
        checkPermissions(request, MODE);

        return EDIT_JSP;
    }

    @ActionMapping("saveDefs")
    public void saveDefs(ActionRequest request, ActionResponse response, Model model, @RequestParam String prefs)
            throws UnsupportedEncodingException, IOException, ReadOnlyException, PortalException, SystemException {
        checkPermissions(request, MODE);

        PortletPreferences portletPrefs = request.getPreferences();
        portletPrefs.setValue(QUIZ_PREFS, prefs);

        try {
            portletPrefs.store(); // Preferences validator set in portlet.xml
                                  // will validate it now
            model.addAttribute(RESOLUTION, SUCCESS);
        } catch (ValidatorException e) {
            LOGGER.error("Quiz portlet preferences could not be validated.", e);
            model.addAttribute(RESOLUTION, FAILED);
            Enumeration<String> failedKeys = e.getFailedKeys();
            while (failedKeys.hasMoreElements()) {
                String key = failedKeys.nextElement();
                messageSource.getMessage(key, null, key, request.getLocale());
            }
        }
    }

    /**
     * Throws exception if a guy doesm't have permissions to access this portlet
     * 
     * note: themeDisplay.getPortletDisplay().getId() works just fine in view mode, but fails in resource mode for an unknown reason (returns empty string)
     * 
     * mode; no struts-related strange xmls required this way!
     */
    private static void checkPermissions(PortletRequest request, String action)
            throws PortalException, SystemException {
        ThemeDisplay themeDisplay = (ThemeDisplay) request.getAttribute(WebKeys.THEME_DISPLAY);
        PermissionChecker permissionChecker = themeDisplay.getPermissionChecker();
        PortletPermissionUtil.check(permissionChecker, themeDisplay.getPlid(),
                request.getAttribute("PORTLET_ID").toString(), action);
    }
}