/*
    * CoolMenuDisplayer4.java
    *
    * Created on December 7, 2002, 12:22 AM
    */
   package net.sf.navigator.displayer;
   
   import net.sf.navigator.menu.MenuComponent;
   import org.apache.commons.lang.StringUtils;
  
  import javax.servlet.jsp.JspException;
  import javax.servlet.jsp.PageContext;
  import java.io.IOException;
  import java.text.MessageFormat;
  
  
  /**
   *
   * @author  <a href="mailto:matt@raibledesigns.com">Matt Raible</a>
   */
  public class CoolMenuDisplayer4 extends MessageResourcesMenuDisplayer {
      //~ Static fields/initializers =============================================
  
      /*Variables for each menu item: (** means that they have to be specified!)
         0 name: The name of the item. This must be unique for each item. Do not use spaces or strange characters in this one! **
         1 parent_name: The name of the menuitem you want this to "connect" to. This will be a submenu of the item that have the name you place in here. ** for all other then the topitems
         2 text: The text you want in the item. ** (except if you use images)
         3 link: The page you want this item to link to.
         4 target: The target window or frame you want the link to go to (Default is same window if you're not using frames, and the mainframe if you're using frames)
         width: The width of the element. If not specified it will get the default width specified above.
         height: The height of the element. If not specified it will get the default height specified above.
         5 img1: The "off" image for element if you want to use images.
         6 img2: The image that appears onmouseover if using images.
         7 regClass: The CSS class for a cell when it's not selected.
         8 overClass: The CSS class for a cell when it's moused over.
         align: The alignment for this item.
         rows: The number of rows for this item to expand.
         9 nolink:  If you have items that are meant to be info items only or something like that you can set this value to 1 and the item will not get a hand cursor and/or a link (the events will not work either)
         10 onclick: If you want something to happen when the element is clicked (different from going to a link) spesifiy it here.
         11 onmouseover: This will happen when you mouseover the element. Could be status text, another imageswap or whatever.
         12 onmouseout: This will happen when you mouseout the element.
         Remember you can have as many levels/sublevels as you want. Just make sure you spesify the correct "parent" for each item.
         To set styles for each level see above.
       */
  
      // oCMenu(name, parent_name, text, link, target, width, height, 
      // regImage, overImage, regClass, overClass , align, rows, nolink, onclick, onmouseover, onmouseout) 
  
      /** main message format of the menu.  only 10 args max in jdk1.3 :( */
  
      // the zero (0) below before the number 5 is for the nolink attribute, since I'm 
      // hiding menus when they're not allowed, this is always 0.
      private static MessageFormat menuMessage =
          new MessageFormat(
              ".makeMenu(''{0}'',''{1}'',''{2}'',''{3}'',''{4}'',''{5}'',''''," +
              "'''','''','''','''',''{6}'','''',0,''{7}'',''{8}'',''{9}'');");
      private static final String TAB = "    "; // four spaces
      private static final String SCRIPT_START =
          "\n<script type=\"text/javascript\">\n<!--";
      private static final String SCRIPT_END = "//-->\n</script>\n";
      private static final String END_STATEMENT = ".construct();\n";
      private String menuId;
  
      //~ Methods ================================================================
  
      public void init(PageContext pageContext, MenuDisplayerMapping mapping) {
          super.init(pageContext, mapping);
          menuId = (String) pageContext.getAttribute("menuId");
  
          try {
              out.print(SCRIPT_START);
          } catch (Exception e) {
              log.error(e.getMessage());
          }
      }
  
      /**
       * Prints the appropriate javascript for CoolMenu using \
       * <code>menuMessage</code> as the format.
       */
      public void display(MenuComponent menu) throws JspException, IOException {
          StringBuffer sb = new StringBuffer();
          buildMenuString(menu, sb, isAllowed(menu));
          out.print("\n" + TAB + sb);
      }
  
      /**
       * This will output the ending javascript statements defined in
       * <code>END_STATEMENT</code> and <code>SCRIPT_END</code>
       */
      public void end(PageContext context) {
          try {
              out.print(TAB + getMenuName() + END_STATEMENT);
              out.print(SCRIPT_END);
          } catch (Exception e) {
              log.error(e.getMessage());
          } finally {
              this.menuId = null;
          }
     }
 
     protected void buildMenuString(MenuComponent menu, StringBuffer sb, boolean allowed) {
         if (allowed) {
             sb.append(getMenuName()).append(menuMessage.format(getArgs(menu))).append("\n").append(TAB).append(TAB);
 
             MenuComponent[] subMenus = menu.getMenuComponents();
 
             if (subMenus.length > 0) {
                 for (int i = 0; i < subMenus.length; i++) {
                     buildMenuString(subMenus[i], sb, isAllowed(subMenus[i]));
                 }
             }
         }
     }
 
     protected String[] getArgs(MenuComponent menu) {
         String[] args = new String[10];
         args[0] = menu.getName();
         args[1] = getParentName(menu);
         args[2] =
             (menu.getImage() != null)
             ? (displayStrings.getMessage("cm.image", menu.getImage()) + " " +
             getMessage(menu.getTitle())) : getMessage(menu.getTitle());
         args[3] = (menu.getUrl() == null) ? EMPTY : menu.getUrl();
         args[4] = getTarget(menu);
         args[5] = (menu.getWidth() == null) ? EMPTY : menu.getWidth();
         args[6] = (menu.getAlign() == null) ? EMPTY : menu.getAlign();
         args[7] = (menu.getOnclick() == null) ? EMPTY : menu.getOnclick();
         args[8] =
             (menu.getOnmouseover() == null) ? EMPTY : menu.getOnmouseover();
         args[9] = (menu.getOnmouseout() == null) ? EMPTY : menu.getOnmouseout();
 
         // fix image HTML to escape double quotes for JavaScript
         args[2] = StringUtils.replace(args[2], "\"", "\\\"");
 
         return args;
     }
 
 
     protected String getParentName(MenuComponent menu) {
         String name;
 
         if (menu.getParent() == null) {
             name = "";
         } else {
             name = menu.getParent().getName();
         }
 
         return name;
     }
 
     protected String getTarget(MenuComponent menu) {
         String theTarget = super.getTarget(menu);
 
         if (theTarget == null) {
             theTarget = EMPTY;
         }
 
         return theTarget;
     }
 
     private String getMenuName() {
         return "oCMenu" + ((menuId != null) ? menuId : "");
     }
 }