SecureTab.java

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/dcm4che.
 *
 * The Initial Developer of the Original Code is
 * Agfa Healthcare.
 * Portions created by the Initial Developer are Copyright (C) 2012
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * See @authors listed below
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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package org.dcm4chee.wizard.common.component.secure;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;

import org.apache.wicket.Session;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.resource.loader.ClassStringResourceLoader;
import org.apache.wicket.resource.loader.PackageStringResourceLoader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.wicketstuff.security.extensions.markup.html.tabs.ISecureTab;

/**
 * @author Robert David <robert.david@agfa.com>
 */
public class SecureTab implements ISecureTab {

    private static final long serialVersionUID = 1L;

    private static Logger log = LoggerFactory.getLogger(SecureTab.class);

    private transient ClassStringResourceLoader classStringLoader;
    private transient PackageStringResourceLoader pkgStringLoader;
    private static final String TAB_TITLE_EXT = ".tabTitle";
    private Class<? extends Panel> clazz;
    private String clazzName;
    private String tabTitlePropertyName;
    private Panel panel;
    private IModel<String> titleModel;

    public SecureTab(Class<? extends Panel> clazz2) {
        clazz = clazz2;
        initialize();
    }

    public SecureTab(Class<? extends Panel> clazz2, IModel<String> titleModel) {
        clazz = clazz2;
        this.titleModel = titleModel;
        initialize();
    }

    public SecureTab(Panel instance, IModel<String> titleModel) {
        clazz = instance.getClass();
        panel = instance;
        this.titleModel = titleModel;
        if (titleModel == null)
            initialize();
    }

    private void initialize() {
        clazzName = clazz.getName().substring(clazz.getName().lastIndexOf('.') + 1);
        pkgStringLoader = new PackageStringResourceLoader();
        try {
            Method m = clazz.getDeclaredMethod("getModuleName");
            tabTitlePropertyName = m.invoke(null) + TAB_TITLE_EXT;
        } catch (Exception e) {
            log.warn("Panel class " + clazz + " has no static getModuleName() method declared! use classname instead!:"
                    + clazzName);
            tabTitlePropertyName = clazzName + TAB_TITLE_EXT;
        }
    }

    private ClassStringResourceLoader getClassStringLoader() {
        if (classStringLoader == null)
            classStringLoader = new ClassStringResourceLoader(clazz);
        return classStringLoader;
    }

    private PackageStringResourceLoader getPackageStringLoader() {
        if (pkgStringLoader == null)
            pkgStringLoader = new PackageStringResourceLoader();
        return pkgStringLoader;
    }

    public Class<? extends Panel> getPanel() {
        return clazz;
    }

    public Panel getPanel(String panelId) {
        try {
            if (panel == null) {
                Constructor<? extends Panel> c = clazz.getConstructor(String.class);
                panel = c.newInstance(panelId);
            }
            return panel;
        } catch (Exception x) {
            log.error("Can't instantiate Panel for " + panelId, x);
            return null;
        }
    }

    /**
     * Get title of the tab. Use ClassStringResourceLoader and
     * PackageStringResourceLoader to get the title String. Using a
     * ResourceModel at this point would fail because the panel isn't
     * instantiated by the TabbedPane. Therefore the title must be either
     * configured in package.properties or <clazz>.properties! Other
     * ResourceLoaders will be ignored!
     */
    public IModel<String> getTitle() {
        if (titleModel == null) {
            String t = getClassStringLoader().loadStringResource(clazz, tabTitlePropertyName,
                    Session.get().getLocale(), null, null);
            if (t == null)
                t = getPackageStringLoader().loadStringResource(clazz, tabTitlePropertyName, Session.get().getLocale(),
                        null, null);
            return new Model<String>(t == null ? clazzName : t);
        } else
            return titleModel;
    }

    public boolean isVisible() {
        return true;
    }
}