/* jQuery Context Menu
* Created: Dec 16th, 2009 by DynamicDrive.com. This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/

jQuery.noConflict()

var jquerycontextmenu={
	arrowpath: 'arrow.gif', //full URL or path to arrow image
	contextmenuoffsets: [1, -1], //additional x and y offset from mouse cursor for contextmenus

	//***** NO NEED TO EDIT BEYOND HERE

	builtcontextmenuids: [], //ids of context menus already built (to prevent repeated building of same context menu)

	positionul:function($, $ul, e){
		var istoplevel=$ul.hasClass('jqcontextmenu') //Bool indicating whether $ul is top level context menu DIV
		var docrightedge=$(document).scrollLeft()+$(window).width()-40 //40 is to account for shadows in FF
		var docbottomedge=$(document).scrollTop()+$(window).height()-40
		if (istoplevel){ //if main context menu DIV
			var x=e.pageX+this.contextmenuoffsets[0] //x pos of main context menu UL
			var y=e.pageY+this.contextmenuoffsets[1]
			x=(x+$ul.data('dimensions').w > docrightedge)? docrightedge-$ul.data('dimensions').w : x //if not enough horizontal room to the ridge of the cursor
			y=(y+$ul.data('dimensions').h > docbottomedge)? docbottomedge-$ul.data('dimensions').h : y
		}
		else{ //if sub level context menu UL
			var $parentli=$ul.data('$parentliref')
			var parentlioffset=$parentli.offset()
			var x=$ul.data('dimensions').parentliw //x pos of sub UL
			var y=0

			x=(parentlioffset.left+x+$ul.data('dimensions').w > docrightedge)? x-$ul.data('dimensions').parentliw-$ul.data('dimensions').w : x //if not enough horizontal room to the ridge parent LI
			y=(parentlioffset.top+$ul.data('dimensions').h > docbottomedge)? y-$ul.data('dimensions').h+$ul.data('dimensions').parentlih : y
		}
		$ul.css({left:x, top:y})
	},
	
	showbox:function($, $contextmenu, e){
		$contextmenu.show()
	},

	hidebox:function($, $contextmenu){
		$contextmenu.find('ul').andSelf().hide() //hide context menu plus all of its sub ULs
	},


	buildcontextmenu:function($, $menu){
		$menu.css({display:'block', visibility:'hidden'}).appendTo(document.body)
		$menu.data('dimensions', {w:$menu.outerWidth(), h:$menu.outerHeight()}) //remember main menu's dimensions
		var $lis=$menu.find("ul").parent() //find all LIs within menu with a sub UL
		$lis.each(function(i){
			var $li=$(this).css({zIndex: 1000+i})
			var $subul=$li.find('ul:eq(0)').css({display:'block'}) //set sub UL to "block" so we can get dimensions
			$subul.data('dimensions', {w:$subul.outerWidth(), h:$subul.outerHeight(), parentliw:this.offsetWidth, parentlih:this.offsetHeight})
			$subul.data('$parentliref', $li) //cache parent LI of each sub UL
			$li.data('$subulref', $subul) //cache sub UL of each parent LI
			$li.children("a:eq(0)").append( //add arrow images
				'<img src="'+jquerycontextmenu.arrowpath+'" class="rightarrowclass" style="border:0;" />'
			)
			$li.bind('mouseenter', function(e){ //show sub UL when mouse moves over parent LI
				var $targetul=$(this).data('$subulref')
				if ($targetul.queue().length<=1){ //if 1 or less queued animations
					jquerycontextmenu.positionul($, $targetul, e)
					$targetul.show()
				}
			})
			$li.bind('mouseleave', function(e){ //hide sub UL when mouse moves out of parent LI
				$(this).data('$subulref').hide()
			})
		})
		$menu.find('ul').andSelf().css({display:'none', visibility:'visible'}) //collapse all ULs again
		this.builtcontextmenuids.push($menu.get(0).id) //remember id of context menu that was just built
	},


	init:function($, $target, $contextmenu){
		if (this.builtcontextmenuids.length==0){ //only bind click event to document once
			$(document).bind("click", function(e){
				if (e.button==0){ //hide all context menus (and their sub ULs) when left mouse button is clicked
					jquerycontextmenu.hidebox($, $('.jqcontextmenu'))
				}
			})
		}
		if (jQuery.inArray($contextmenu.get(0).id, this.builtcontextmenuids)==-1) //if this context menu hasn't been built yet
			this.buildcontextmenu($, $contextmenu)
			$(document).bind("click", function(e){
				if (e.button==0){ //hide all context menus (and their sub ULs) when left mouse button is clicked
					jquerycontextmenu.hidebox($, $('.jqcontextmenu'))
				}
			})
		if ($target.parents().filter('ul.jqcontextmenu').length>0) //if $target matches an element within the context menu markup, don't bind oncontextmenu to that element
			return
		$target.bind("contextmenu", function(e){
			jquerycontextmenu.hidebox($, $('.jqcontextmenu')) //hide all context menus (and their sub ULs)
			jquerycontextmenu.positionul($, $contextmenu, e)
			jquerycontextmenu.showbox($, $contextmenu, e)
			return false
		})
	}
}

jQuery.fn.addcontextmenu=function(contextmenuid){
	var $=jQuery
	return this.each(function(){ //return jQuery obj
		var $target=$(this)
			jquerycontextmenu.init($, $target, $('#'+contextmenuid))
	})
};


//Usage: $(elementselector).addcontextmenu('id_of_context_menu_on_page')