/**
 * @author Paul Chan / KF Software House
 * http://www.kfsoft.info
 * Modified by Aleksey Kuznetsov (AK) at 2011/10/14  
 *
 * Version 0.6
 * Copyright (c) 2011 KF Software House
 *
 * Licensed under the MIT license:
 * http://www.opensource.org/licenses/mit-license.php
 *
 */

(function($) {

    var _options = new Array()
	var _optionsMenuLength = new Array()
	var timeoutId = 0
	
	jQuery.fn.MyDropdown = function() {
		_options[_options.length]=1
		_optionsMenuLength[_options.length] = 0
		var idx = _options.length-1
		$(this).attr('idx', idx)

		$(this).each(function(){
			var selectmenu = $(this)
			var menuoptions = selectmenu.find('option')
			var val
			var genMenu = ''

			_optionsMenuLength[idx] = menuoptions.length

			for (var i=0;i!=menuoptions.length;i++){
				val = menuoptions[i].value
				txt = menuoptions[i].text
				genMenu+= '<li v="'+val+'">'+txt // AK
			}

			genMenu = menuoptions.length>0? '<ul class="advMenuUL advMenuUL'+idx+'">'+genMenu+'</ul>':''
			var genHeader = '<div class="genHeader genHeader'+idx+'">SELECT</div>'
			selectmenu.hide()

			selectmenu.after(genHeader + genMenu)
			var lineHeight = parseInt($('.genHeader').css('height'))

			$('.advMenuUL'+idx).addClass('menuHeader').addClass('menuHeader'+idx)
			$('.genHeader'+idx).click(function(){
				// AK --
				var selv = $(selectmenu).val()
				$('.advMenuUL li').each(function(){
					var v = $(this).attr('v')
					if (v==selv){
						this.className = 'sel'
						return false // AK - break
					}
				})

				$('.menuHeader'+idx).css('height', _optionsMenuLength[idx] * lineHeight)

				// AK --
				if ($('.genHeader'+idx).width() + 32 > $('.advMenuUL'+idx).width())
					$('.advMenuUL'+idx).css('width', $('.genHeader'+idx).width() + 32)

				$('.menuHeader'+idx).toggle() // AK
			}).mouseleave(function(){
				$('.menuHeader'+idx).css('height', lineHeight+'px')
				timeoutId = setTimeout(function(){
					$('.menuHeader'+idx).hide()
				},10)
			})

			$('.menuHeader'+idx).mouseenter(function(){
				$(this).css('height', _optionsMenuLength[idx] * lineHeight)
				clearTimeout(timeoutId)
			}).mouseleave(function(){
				$(this).css("height", lineHeight+'px')
				$(this).hide()
			})

			$('.genHeader'+idx).mouseenter(function(){
				$(this).addClass('genHeaderSel')
			}).mouseleave(function(){
				$(this).removeClass('genHeaderSel')
			}).mousedown(function(){ // AK - disable selection on double click for Mozilla. (For IE it should be disabling of "onstartselect", but it conflicts with jQuery)
				return false
			})

			$('.advMenuUL'+idx+' li').click(function(){
				$('.genHeader'+idx).html($(this).text())
				var v = $(this).attr('v')
				$(selectmenu).children().each(function(){
					if ($(this).val()==v){
						this.selected = true
						selectmenu.trigger('change') // AK -- onChange!
						return false // AK - break
					}
				})
				$('.menuHeader'+idx).hide()
			}).mouseover(function(){ // AK --
				$('.advMenuUL li').each(function(){
					this.className = ''
				})
			})

			$('.advMenuUL').hide()

			//init
			$(selectmenu).children().each(function(){
				if (this.selected){
					var selv = $(this).val()
					var selt = $(this).text()

					$('.advMenuUL li').each(function(){
						var v = $(this).attr('v')
						if (v==selv){
							$('.genHeader'+idx).html(selt)
							return false // AK - break
						}
					})
				}
			})
		})
	}
})(jQuery)