Struts - menu permission

<?xml version="1.0" encoding="UTF-8" ?>

<MenuConfig>

  <Displayers>
    <Displayer   name="DropDown"
                 type="net.sf.navigator.displayer.DropDownMenuDisplayer"/>
    <Displayer   name="Simple"
                 type="net.sf.navigator.displayer.SimpleMenuDisplayer"/>
    <Displayer   name="CoolMenu"
                 type="net.sf.navigator.displayer.CoolMenuDisplayer"/>
    <Displayer   name="CoolMenu4"
                 type="net.sf.navigator.displayer.CoolMenuDisplayer4"/>
    <Displayer   name="MenuForm"
                 type="net.sf.navigator.example.PermissionsFormMenuDisplayer"/>
    <Displayer   name="ListMenu"
                 type="net.sf.navigator.displayer.ListMenuDisplayer"/>
    <Displayer   name="TabbedMenu"
                 type="net.sf.navigator.displayer.TabbedMenuDisplayer"/>
    <Displayer   name="Velocity"
                 type="net.sf.navigator.displayer.VelocityMenuDisplayer"/>
    <Displayer   name="XtreeMenu"
                 type="net.sf.navigator.displayer.XtreeMenuDisplayer"/>
    <Displayer   name="CSSListMenu"
                 type="net.sf.navigator.displayer.CSSListMenuDisplayer"/>
  </Displayers>

  <Menus>

    <Menu  name="indexMenu"  title="Examples">
        <!-- page attribute indicating a context relative resource.
             The context path will be prepended to the value. -->
        <Item  name="indexMenu1"  title="Basic Example"
               toolTip="Shows usage of the menu displayers using defaults."
               page="/menutest1.jsp"/>
        <Item  name="indexMenu2"  title="Advanced Example"
               toolTip="Shows customized menu displays."
               page="/menutest2.jsp"/>
        <Item  name="indexMenu3"  title="CoolMenu Example"
               toolTip="Shows menu using CoolMenu3"
               page="/coolmenu1.jsp"/>
        <Item  name="indexMenu4"  title="CoolMenu Example - With Form"
               toolTip="Shows menu using CoolMenu3 with forms."
               page="/coolmenu2.jsp"/>
        <Item  name="indexMenu5"  title="Permissions Example"
               toolTip="Example use of menu disable and permission checking with CoolMenus."
               page="/permissionsForm.jsp"/>
        <Item  name="indexMenu6"  title="CoolMenu4 Example"
               toolTip="Shows menu using CoolMenu4"
               page="/coolmenu4.jsp"/>
        <Item  name="indexMenu7"  title="Expandable DHTML List Example"
               toolTip="Shows Expandable DHTML list"
               page="/dhtmlExpandable.jsp"/>
        <Item  name="indexMenu7"  title="Dropdown DHTML List Example"
               toolTip="Shows Dropdown DHTML list"
               page="/dhtmlDropdown.jsp"/>
        <Item  name="indexMenu8"  title="Roles Menu Example"
               toolTip="Shows Menus based on user's role"
               page="/rolesMenu.jsp"/>
        <Item  name="indexMenu9"  title="Tabbed Menu Example"
               toolTip="Shows Tabbed-based Menu"
               forward="tabbedMenu"/>
        <Item  title="Velocity Template Menu"
               toolTip="Shows very simple Velocity generated Menu"
               page="/velocity.jsp"/>
        <Item  title="Velocity CoolMenus Menu"
               toolTip="Shows Velocity generated CoolMenu"
               page="/velocity-coolmenu4.jsp"/>
        <Item  title="Velocity XTree Menu"
               toolTip="Shows Velocity generated XTree"
               page="/velocity-xtree.jsp"/>
        <Item  title="Velocity Tabbed Menu"
               toolTip="Shows Velocity generated Tabbed Menu"
               page="/velocity-tabs.jsp?Home"/>
        <Item  title="Nice Looking Tabbed Menu"
               toolTip="Shows Velocity generated Tabbed Menu"
               page="/velocity-nicetabs.jsp?Home"/>
        <Item  title="EL (Expression Language) enabled Menu"
               toolTip="Shows very simple Velocity EL Menu"
               page="/velocity-el.jsp"/>
        <Item  title="Dynamic, Databased-driven Menu"
               toolTip="Shows very simple menu built from a database table"
               page="/dynamicMenu.jsp"/>
        <Item  title="CSS-based Drop-down Menu: Horizontal [New!]"
               toolTip="CSS-only Horizontal drop-down menu"
               page="/cssHorizontal.jsp"/>
        <Item  title="CSS-based Drop-down: Vertical [New!]"
               toolTip="CSS-only Vertical drop-down menu"
               page="/cssVertical.jsp"/>
        <Item  title="Velocity-based CSS Drop-down Menu: Horizontal [New!]"
               toolTip="Velocity-based CSS Horizontal drop-down menu"
               page="/cssHorizontal.jsp?velocity=true"/>
        <Item  title="Velocity-based CSS Drop-down: Vertical [New!]"
               toolTip="Velocity-based CSS Vertical drop-down menu"
               page="/cssVertical.jsp?velocity=true"/>
    </Menu>

    <Menu name="projectMenu" title="Project Menu">
        <Item title="Home" toolTip="Return to List of Menus" page="/index.jsp"/>
        <Item title="Documentation" toolTip="View Project Documentation"
            location="http://struts-menu.sf.net"/>
        <Item title="FAQs" toolTip="View Frequenty Asked Questions"
            location="http://struts-menu.sf.net/faq.html"/>
        <Item title="Mailing Lists" toolTip="Subscribe to Mailing Lists"
            location="http://sourceforge.net/mail/?group_id=48726"/>
        <Item title="Mailing List Archives"
            toolTip="Search the Mailing List Archives"
            location="http://www.mail-archive.com/index.php?hunt=struts-menu"/>
    </Menu>

  <!-- ====================   To Do List Menus   =========================== -->
    <Menu  name="ToDoListMenuFile"  title="FILE"  description="test" width="50">
       <Item   name="TDLnew"   title="NEW">
           <Item   name="TDLnewcase"   title="CASE"    image="images/case-new.png"
                   location="NewCase.jsp"/>
           <Item   name="TDLnewitem"    title="ITEM"   image="images/item-new.png"
                   location="index.jsp"/>
           <Item   name="TDLnewparty"   title="PARTY"  image="images/party-new.png"
                   location="index.jsp"/>
       </Item>
       <Item   name="TDLopen"   title="OPEN">
           <Item   name="TDLopencase"    title="CASE"   image="images/case-open.png"
                    location="index.jsp"/>
           <Item   name="TDLopenitem"   title="ITEM"    image="images/item-open.png"
                    location="index.jsp"/>
           <Item   name="TDLopenparty"  title="PARTY"   image="images/party-open.png"
                    location="index.jsp"/>
       </Item>
       <Item    name="TDLexit"  title="EXIT"
                image="images/exit.png"   location="index.jsp"/>
    </Menu>

    <Menu  name="ToDoListMenuEdit"  title="EDIT">
         <Item  name="TDLselect" title="SELECT_ALL"       image="images/select-all.png"
                    location="index.jsp" width="100" />
         <Item  name="TDLprefs"  title="USER_PREFERENCES" image="images/prefs.png"
                    location="index.jsp" width="150" />
    </Menu>

    <Menu  name="ToDoListMenuTools"  title="TOOLS">
         <Item  name="TDLreports"  title="REPORTS"   image="images/reports.png"/>
         <Item  name="TDLfind"     title="FIND"      image="images/find.png"/>
         <Item  name="TDLsubscr"   title="SUBSCRIBE" image="images/assign.png"/>
    </Menu>

    <Menu  name="ToDoListMenuWindows" title="WINDOW">
         <Item  name="TDLlibr"  title="LIBRARY" image="images/library.png"/>
    </Menu>

    <Menu  name="ToDoListMenuHelp"   title="HELP">
         <Item  name="TDLhelp"   title="ONLINE_HELP"    image="images/help.png"/>
         <Item  name="TDLabout"  title="ABOUT_TRACKER"  image="images/trackernet.png"/>
    </Menu>

    <!-- New Menu for Tabbed Displayer -->
    <Menu name="TabbedHome" title="Home" location="?Home" target="_blank"/>
    <Menu name="TabbedAbout" title="About"> <!-- No location, uses first item's location (People) -->
        <Item name="People" title="People" location="?People"/>
        <Item name="Careers" title="Careers" location="?Careers" target="_blank"/>
        <Item name="Press" title="Press" location="?Press" 
            onclick="alert('This item has an onclick handler in menu-config.xml.')"/>
        <Item name="Locations" title="Locations" location="?Locations"/>
    </Menu>

    <Menu name="TabbedContact" title="Contact" location="?Contact">
        <Item name="EMail" title="E-Mail" location="?EMail"/>
        <Item name="Phone" title="Phone" location="?Phone"/>
        <Item name="CarrierPigeon" title="Carrier Pigeon" location="?Pigeon"/>
    </Menu>
    <Menu name="TabbedExit" title="Exit" page="/index.jsp"/>

  <!-- ====================   Case View  Menus   =========================== -->
    <!-- FILE -->
    <Menu  name="CaseDetailMenuFile"  title="FILE"  description="test">
         <Item   name="CDnew"   title="NEW">
              <Item   name="CDnewcase"   title="CASE"     image="images/case-new.png"
                      location="index.jsp"/>
              <Item   name="CDLnewitem"    title="ITEM"    image="images/item-new.png"
                      location="index.jsp"/>
              <Item   name="CDnewparty"   title="PARTY"   image="images/party-new.png"
                      location="index.jsp"/>
         </Item>
         <Item   name="CDopen"   title="OPEN">
              <Item   name="CDopencase"    title="CASE"   image="images/case-open.png"
                      location="index.jsp"/>
              <Item   name="CDopenitem"   title="ITEM"    image="images/item-open.png"
                      location="index.jsp"/>
              <Item   name="CDopenparty"  title="PARTY"   image="images/party-open.png"
                      location="index.jsp"/>
         </Item>
         <Item   name="CDclose"  title="CLOSE"    location="index.jsp"/>
         <Item   name="CDexit"   title="EXIT"
                 image="images/exit.png"   location="index.jsp"/>
    </Menu>

    <!-- EDIT -->
    <Menu  name="CaseDetailMenuEdit"   title="EDIT">
         <Item  name="CDundo"   title="UNDO"  image="images/undo.png"/>
         <Item  name="CDcut"    title="CUT"   image="images/cut.png"/>
         <Item  name="CDcopy"   title="COPY"  image="images/copy.png"/>
         <Item  name="CDpaste"  title="PASTE" image="images/paste.png"/>x`
         <Item  name="CDclear"  title="CLEAR" image="images/clear.png"/>
         <Item  name="CDselect" title="CLEAR" image="images/select-all.png"/>
         <Item  name="CDprefs"  title="USER_PREFERENCES" image="images/prefs.png"/>
    </Menu>

    <!-- CASE -->
    <Menu  name="CaseDetailMenuCase"   title="CASE">
         <Item  name="CDadd"    title="ADD">
              <Item   name="CDaddparty"    title="PARTY"      image="images/party-add.png"/>
              <Item   name="CDadditem"     title="ITEM"       image="images/item-add.png"/>
              <Item   name="CDaddcomments" title="COMMENTS"   image="images/comments.png"/>
              <Item   name="CDadddoc"      title="DOCUMENTS"  image="images/documents.png"/>
              <Item   name="CDaddposition" title="POSITION"   image="images/positions.png"/>
         </Item>
         <Item  name="CDopen"   title="OPEN">
              <Item   name="CDopenparty"    title="PARTY"      image="images/party-open.png"/>
              <Item   name="CDopenitem"     title="ITEM"       image="images/item-open.png"/>
              <Item   name="CDopencomments" title="COMMENTS"   image="images/comments.png"/>
              <Item   name="CDopendoc"      title="DOCUMENTS"  image="images/documents.png"/>
              <Item   name="CDopenposition" title="POSITION"   image="images/positions.png"/>
              <Item   name="CDopenhistory"  title="HISTORY"    image="images/history.png"/>
         </Item>
         <Item  name="CDassign"    title="ASSIGN"           image="images/assign.png"/>
         <Item  name="CDactivate"  title="ACTIVATE"         image="images/activate.png"/>
         <Item  name="CDpublish"   title="PUBLISH"          image="images/case-pub.png"/>
         <Item  name="CDescalate"  title="ESCALATE"         image="images/escalate.png"/>
         <Item  name="CDdecide"    title="DECIDE"           image="images/decide.png"/>
         <Item  name="CDgenlicen"  title="GENERATE_LICENSE" image="images/genlicense.png"/>
    </Menu>

    <Menu  name="Countries" title="Countries">
        <Item title="COUNTRY_AU" image="images/australia2.gif"/>
        <Item title="COUNTRY_CZ" image="images/czech2.gif"/>
        <Item title="COUNTRY_CN" image="images/china2.gif"/>
        <Item title="COUNTRY_DK" image="images/denmark2.gif"/>
        <Item title="COUNTRY_FI" image="images/finland2.gif"/>
        <Item title="COUNTRY_FR" image="images/france2.gif"/>
        <Item title="COUNTRY_JP" image="images/japan2.gif"/>
        <Item title="COUNTRY_RU" image="images/russia2.gif"/>
        <Item title="COUNTRY_US" image="images/usa2.gif"/>
        <Item title="COUNTRY_CH" image="images/switzlnd2.gif"/>
    </Menu>

    <Menu  name="Permissions" title="Permissions" roles="tomcat,role1">
        <Item title="Change" location="permissionsForm.jsp"/>
    </Menu>

    <Menu name="Standalone" title="Standalone Test" location="?Self"/>

  </Menus>

</MenuConfig>

## The displayMenu macro (at the bottom of this template) is defined in
## struts-menu.jar!/net/sf/displayer/globalMacros.vm. It has a callback to the #menuItem macro
## you see below. You can override this macro by creating a menuMacros.vm template
## at the root of your classpath

#macro( menuItem $menu $level )
  <tr><td>
  #foreach ($i in [0..$level])
    &nbsp;&nbsp;
  #end
  #if ($menu.url) 
    <a href="$menu.url" title="$displayer.getMessage($menu.title)">
        $displayer.getMessage($menu.title)</a>
  #else 
    $displayer.getMessage($menu.title)
  #end
  </td></tr>
#end

<table>
#displayMenu($menu 0)
</table>

package net.sf.navigator.taglib.el;

import net.sf.navigator.menu.MenuComponent;

import javax.servlet.jsp.JspException;
import java.net.MalformedURLException;


/**
 * This tag acts the same as net.sf.navigator.taglib.DisplayMenuTag, except
 * that it allows JSTL Expressions in it's name and target attributes.
 *
 * @author Matt Raible
 * @version $Revision: 1.6 $ $Date: 2006/07/09 08:08:10 $
 */
public class DisplayMenuTag extends net.sf.navigator.taglib.DisplayMenuTag {
    private String name;
    private String target;

    public void setName(String name) {
        this.name = name;
    }

    public void setTarget(String target) {
        this.target = target;
    }

    public DisplayMenuTag() {
        super();
        init();
    }

    private void init() {
        name = null;
        target = null;
    }

    public void release() {
        super.release();
        init();
    }

    public int doStartTag() throws JspException {
        evaluateExpressions();
        return super.doStartTag();
    }

    /**
     * Overrides the setPageLocation in parentTag to use JSTL to evaluate
     * the URL.  It's definitely ugly, so if you have a cleaner way, please
     * let me know!
     *
     * @param menu
     */
    protected void setPageLocation(MenuComponent menu)
    throws MalformedURLException, JspException {
        setLocation(menu);
        String url = menu.getLocation();

        if (url != null) {
            ExpressionEvaluator eval = new ExpressionEvaluator(this, pageContext);
            menu.setUrl(eval.evalString("url", url));
        }

        // do all contained menus
        MenuComponent[] subMenus = menu.getMenuComponents();

        if (subMenus.length > 0) {
            for (int i = 0; i < subMenus.length; i++) {
                this.setPageLocation(subMenus[i]);
            }
        }
    }

    private void evaluateExpressions() throws JspException {
        ExpressionEvaluator eval = new ExpressionEvaluator(this, pageContext);

        if (name != null) {
            super.setName(eval.evalString("name", name));
        }

        if (target != null) {
            super.setTarget(eval.evalString("target", target));
        }
    }
}

/*
 * PermissionsFormMenuDisplayer.java
 *
 * Created on April 30, 2002, 12:25 AM
 */
package net.sf.navigator.example;

import java.io.IOException;
import java.text.MessageFormat;

import javax.servlet.jsp.JspException;

import net.sf.navigator.displayer.SimpleMenuDisplayer;
import net.sf.navigator.menu.MenuComponent;


/**
 *
 * @author  ssayles
 */
public class PermissionsFormMenuDisplayer extends SimpleMenuDisplayer {
    //~ Static fields/initializers =============================================

    private static final MessageFormat inputMessage =
        new MessageFormat(
            "<input type=\"checkbox\" name=\"menus\" value=\"{0}\"/>");
    private static final MessageFormat itemMessage =
        new MessageFormat(
            "<tr><td class=\"smd-menu-item\">{0} {1} {2} {3}</td></tr>");

    //~ Methods ================================================================

    protected void displayComponents(MenuComponent menu, int level)
    throws JspException, IOException {
        String title = getMessage(menu.getTitle());
        MenuComponent[] components = menu.getMenuComponents();

        if (components.length > 0) {
            out.println(displayStrings.getMessage("smd.menu.item.top",
                    getSpace(level) +
                    displayStrings.getMessage("smd.menu.item.image.bullet") +
                    getMenuInput(menu) + getMessage(menu.getTitle())));

            for (int i = 0; i < components.length; i++) {
                if (components[i].getMenuComponents().length > 0) {
                    displayComponents(components[i], level + 1);
                } else {
                    out.println(getMenuItem(components[i], getSpace(level + 1)));
                }
            }
        } else {
            out.println(getMenuItem(menu, ""));
        }
    }

    private String getMenuItem(MenuComponent menu, String space) {
        return itemMessage.format(new String[] {
                space, getMenuInput(menu), getImage(menu),
                getMessage(menu.getTitle())
            });
    }

    private String getMenuInput(MenuComponent menu) {
        return inputMessage.format(new String[] { menu.getName() });
    }
}

/*
 * SetPermissionsActions.java
 *
 * Created on April 30, 2002, 1:22 AM
 */
package net.sf.navigator.example;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.navigator.menu.PermissionsAdapter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;


/**
 *
 * @author  ssayles
 */
public final class SetPermissionsAction extends Action {
    //~ Instance fields ========================================================

    /**
     * The <code>Log</code> instance for this application.
     */
    private Log log = LogFactory.getLog(SetPermissionsAction.class);

    //~ Methods ================================================================

    /**
     * Process the specified HTTP request, and create the corresponding HTTP
     * response (or forward to another web component that will create it).
     * Return an <code>ActionForward</code> instance describing where and how
     * control should be forwarded, or <code>null</code> if the response has
     * already been completed.
     *
     * @param mapping The ActionMapping used to select this instance
     * @param actionForm The optional ActionForm bean for this request (if any)
     * @param request The HTTP request we are processing
     * @param response The HTTP response we are creating
     *
     * @exception Exception if business logic throws an exception
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form,
        HttpServletRequest request, HttpServletResponse response)
    throws Exception {
        //ActionErrors errors = new ActionErrors();
        String[] menus = request.getParameterValues("menus");

        PermissionsAdapter permissions = new SimplePermissionsAdapter(menus);
        request.getSession().setAttribute("exampleAdapter", permissions);

        // added by Matt Raible to dynamically switch menus
        request.getSession().setAttribute("displayer",
            request.getParameter("displayer"));

        return (mapping.findForward("success"));
    }
}

/*
 * SimplePermissionsAdapter.java
 *
 * Created on April 30, 2002, 1:27 AM
 */
package net.sf.navigator.example;

import java.util.ArrayList;

import net.sf.navigator.menu.MenuComponent;
import net.sf.navigator.menu.PermissionsAdapter;


/**
 *
 * @author  ssayles
 */
public class SimplePermissionsAdapter implements PermissionsAdapter {
    //~ Instance fields ========================================================

    private ArrayList menuNames;

    //~ Constructors ===========================================================

    /**
     * Creates a new instance of SimplePermissionAdapter
     */
    public SimplePermissionsAdapter(String[] theMenuNames) {
        menuNames = new ArrayList();

        if (theMenuNames != null) {
            for (int i = 0; i < theMenuNames.length; i++) {
                menuNames.add(theMenuNames[i]);
            }
        }
    }

    //~ Methods ================================================================

    /**
     * If the menu is allowed, this should return true.
     *
     * @return whether or not the menu is allowed.
     */
    public boolean isAllowed(MenuComponent menu) {
        return !menuNames.contains(menu.getName());
    }
}