SkinValuesManager.java

/*
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 *
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 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
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 * file and include the License file at packager/legal/LICENSE.txt.
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package jsf2.demo.scrum.web.controller;

import java.io.Serializable;
import javax.annotation.PostConstruct;

import javax.inject.Named;
import javax.enterprise.context.ApplicationScoped;
import java.util.Map;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.ArrayList;
import javax.annotation.PreDestroy;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;


/**
 *
 * @author edermag
 */
@Named("skinValuesManager")
@ApplicationScoped
public class SkinValuesManager implements Serializable {

    private Map<String, String> values;

    private String defaultSkin = "blue";
    private static final long serialVersionUID = 2238251086172648511L;

    @PostConstruct
    public void construct() {
        values = new LinkedHashMap<String, String>();
        values.put("yellow", "appYellowSkin.css");
        values.put("orange", "appOrangeSkin.css");
        values.put("red", "appRedSkin.css");
        values.put(defaultSkin, "appBlueSkin.css");
    }

    @PreDestroy
    public void destroy() {
        if (null != values) {
            values.clear();
            values = null;
        }
        FacesContext context = FacesContext.getCurrentInstance();
        if (null != context) {
            ExternalContext extContext = context.getExternalContext();
            if (null != extContext) {
                Map sessionMap = extContext.getSessionMap();
                if (null != sessionMap) {
                    sessionMap.remove("skinValuesManager");
                }
            }
        }
    }
    
    protected String getSkinCss(String skin) {
        if (!values.containsKey(skin))
            return getDefaultSkinCss();
        return values.get(skin);
    }

    protected String getDefaultSkinCss() {
        return values.get(defaultSkin);
    }

    public List<String> getNames() {
        return new ArrayList<String>(values == null ? null : values.keySet());
    }

    public int getSize() {
        return values.keySet().size();
    }

}