/*
 * jdMenu 1.4.1 (2008-03-31)
 *
 * Copyright (c) 2006,2007 Jonathan Sharp (http://jdsharp.us)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://jdsharp.us/
 *
 * Built upon jQuery 1.2.1 (http://jquery.com)
 * This also requires the jQuery dimensions >= 1.2 plugin
 */

// This initializes the menu
$(function() {
  $('ul.jd_menu').jdMenu();
  $('ul.jd_menu_vertical').jdMenu();
});

(function($){
  function addEvents(ul) {
    var settings = $.data( $(ul).parents().andSelf().filter('ul.jd_menu')[0], 'jdMenuSettings' );
    $('> li', ul)
    .bind('mouseenter.jdmenu mouseleave.jdmenu', function(evt) {
      $(this).toggleClass('jdm_hover');
      var ul = $('> ul', this);
      if ( ul.length == 1 ) {
        clearTimeout( this.$jdTimer );
        var enter = ( evt.type == 'mouseenter' );
        var fn = ( enter ? showMenu : hideMenu );
        this.$jdTimer = setTimeout(function() {
          fn( ul[0], settings.onAnimate, settings.isVertical );
        }, enter ? settings.showDelay : settings.hideDelay );
      }
    })
    .bind('click.jdmenu', function(evt) {
      var ul = $('> ul', this);
      if ( ul.length == 1 &&
        ( settings.disableLinks == true || $(this).hasClass('accessible') ) ) {
        showMenu( ul, settings.onAnimate, settings.isVertical );
        return false;
      }
				
      // The user clicked the li and we need to trigger a click for the a
      if ( evt.target == this ) {
        var link = $('> a', evt.target).not('.accessible');
        if ( link.length > 0 ) {
          var a = link[0];
          if ( !a.onclick ) {
            window.open( a.href, a.target || '_self' );
          } else {
            $(a).trigger('click');
          }
        }
      }
      if ( settings.disableLinks ||
        ( !settings.disableLinks && !$(this).parent().hasClass('jd_menu') ) ) {
        $(this).parent().jdMenuHide();
        evt.stopPropagation();
      }
    })
    .find('> a')
    .bind('focus.jdmenu blur.jdmenu', function(evt) {
      var p = $(this).parents('li:eq(0)');
      if ( evt.type == 'focus' ) {
        p.addClass('jdm_hover');
      } else {
        p.removeClass('jdm_hover');
      }
    })
    .filter('.accessible')
    .bind('click.jdmenu', function(evt) {
      evt.preventDefault();
    });
  }

  function showMenu(ul, animate, vertical) {
    var ul = $(ul);
    if ( ul.is(':visible') ) {
      return;
    }
    ul.bgiframe();
    var li = ul.parent();
    ul	.trigger('jdMenuShow')
    .positionBy({
      target: 	li[0],
      targetPos: 	( vertical === true || !li.parent().hasClass('jd_menu') ? 1 : 3 ),
      elementPos: 0,
      hideAfterPosition: true
    });
    if ( !ul.hasClass('jdm_events') ) {
      ul.addClass('jdm_events');
      addEvents(ul);
    }
    li	.addClass('jdm_active')
    // Hide any adjacent menus
    .siblings('li').find('> ul:eq(0):visible')
    .each(function(){
      hideMenu( this );
    });
    if ( animate === undefined ) {
      ul.show();
    } else {
      animate.apply( ul[0], [true] );
    }
  }
	
  function hideMenu(ul, animate) {
    var ul = $(ul);
    $('.bgiframe', ul).remove();
    ul	.filter(':not(.jd_menu)')
    .find('> li > ul:eq(0):visible')
    .each(function() {
      hideMenu( this );
    })
    .end();
    if ( animate === undefined ) {
      ul.hide()
    } else {
      animate.apply( ul[0], [false] );
    }

    ul	.trigger('jdMenuHide')
    .parents('li:eq(0)')
    .removeClass('jdm_active jdm_hover')
    .end()
    .find('> li')
    .removeClass('jdm_active jdm_hover');
  }
	
  // Public methods
  $.fn.jdMenu = function(settings) {
    // Future settings: activateDelay
    var settings = $.extend({	// Time in ms before menu shows
      showDelay: 		0,
      // Time in ms before menu hides
      hideDelay: 		500,
      // Should items that contain submenus not
      // respond to clicks
      disableLinks:	false
    // This callback allows for you to animate menus
    //onAnimate:	null
    }, settings);
    if ( !$.isFunction( settings.onAnimate ) ) {
      settings.onAnimate = undefined;
    }
    return this.filter('ul.jd_menu').each(function() {
      $.data(	this,
        'jdMenuSettings',
        $.extend({
          isVertical: $(this).hasClass('jd_menu_vertical')
        }, settings)
        );
      addEvents(this);
    });
  };
	
  $.fn.jdMenuUnbind = function() {
    $('ul.jdm_events', this)
    .unbind('.jdmenu')
    .find('> a').unbind('.jdmenu');
  };
  $.fn.jdMenuHide = function() {
    return this.filter('ul').each(function(){
      hideMenu( this );
    });
  };

  // Private methods and logic
  $(window)
  // Bind a click event to hide all visible menus when the document is clicked
  .bind('click.jdmenu', function(){
    //$('ul.jd_menu ul:visible').jdMenuHide();
  });
})(jQuery);