112 lines
4.9 KiB
JavaScript
112 lines
4.9 KiB
JavaScript
/* jQuery Context Menu
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* Created: Dec 16th, 2009 by DynamicDrive.com. This notice must stay intact for usage
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* Author: Dynamic Drive at http://www.dynamicdrive.com/
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* Visit http://www.dynamicdrive.com/ for full source code
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*/
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jQuery.noConflict()
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var jquerycontextmenu={
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arrowpath: 'images/arrow.gif', //full URL or path to arrow image
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contextmenuoffsets: [1, -1], //additional x and y offset from mouse cursor for contextmenus
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//***** NO NEED TO EDIT BEYOND HERE
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builtcontextmenuids: [], //ids of context menus already built (to prevent repeated building of same context menu)
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positionul:function($, $ul, e){
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var istoplevel=$ul.hasClass('jqcontextmenu') //Bool indicating whether $ul is top level context menu DIV
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var docrightedge=$(document).scrollLeft()+$(window).width()-40 //40 is to account for shadows in FF
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var docbottomedge=$(document).scrollTop()+$(window).height()-40
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if (istoplevel){ //if main context menu DIV
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var x=e.pageX+this.contextmenuoffsets[0] //x pos of main context menu UL
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var y=e.pageY+this.contextmenuoffsets[1]
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x=(x+$ul.data('dimensions').w > docrightedge)? docrightedge-$ul.data('dimensions').w : x //if not enough horizontal room to the ridge of the cursor
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y=(y+$ul.data('dimensions').h > docbottomedge)? docbottomedge-$ul.data('dimensions').h : y
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}
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else{ //if sub level context menu UL
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var $parentli=$ul.data('$parentliref')
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var parentlioffset=$parentli.offset()
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var x=$ul.data('dimensions').parentliw //x pos of sub UL
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var y=0
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x=(parentlioffset.left+x+$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
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y=(parentlioffset.top+$ul.data('dimensions').h > docbottomedge)? y-$ul.data('dimensions').h+$ul.data('dimensions').parentlih : y
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}
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$ul.css({left:x, top:y})
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},
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showbox:function($, $contextmenu, e){
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$contextmenu.show()
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},
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hidebox:function($, $contextmenu){
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$contextmenu.find('ul').andSelf().hide() //hide context menu plus all of its sub ULs
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},
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buildcontextmenu:function($, $menu){
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$menu.css({display:'block', visibility:'hidden'}).appendTo(document.body)
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$menu.data('dimensions', {w:$menu.outerWidth(), h:$menu.outerHeight()}) //remember main menu's dimensions
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var $lis=$menu.find("ul").parent() //find all LIs within menu with a sub UL
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$lis.each(function(i){
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var $li=$(this).css({zIndex: 1000+i})
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var $subul=$li.find('ul:eq(0)').css({display:'block'}) //set sub UL to "block" so we can get dimensions
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$subul.data('dimensions', {w:$subul.outerWidth(), h:$subul.outerHeight(), parentliw:this.offsetWidth, parentlih:this.offsetHeight})
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$subul.data('$parentliref', $li) //cache parent LI of each sub UL
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$li.data('$subulref', $subul) //cache sub UL of each parent LI
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$li.children("a:eq(0)").append( //add arrow images
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'<img src="'+jquerycontextmenu.arrowpath+'" class="rightarrowclass" style="border:0;" />'
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)
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$li.bind('mouseenter', function(e){ //show sub UL when mouse moves over parent LI
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var $targetul=$(this).data('$subulref')
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if ($targetul.queue().length<=1){ //if 1 or less queued animations
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jquerycontextmenu.positionul($, $targetul, e)
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$targetul.show()
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}
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})
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$li.bind('mouseleave', function(e){ //hide sub UL when mouse moves out of parent LI
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$(this).data('$subulref').hide()
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})
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})
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$menu.find('ul').andSelf().css({display:'none', visibility:'visible'}) //collapse all ULs again
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this.builtcontextmenuids.push($menu.get(0).id) //remember id of context menu that was just built
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},
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init:function($, $target, $contextmenu){
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if (this.builtcontextmenuids.length==0){ //only bind click event to document once
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$(document).bind("click", function(e){
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if (e.button==0){ //hide all context menus (and their sub ULs) when left mouse button is clicked
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jquerycontextmenu.hidebox($, $('.jqcontextmenu'))
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}
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})
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}
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if (jQuery.inArray($contextmenu.get(0).id, this.builtcontextmenuids)==-1) //if this context menu hasn't been built yet
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this.buildcontextmenu($, $contextmenu)
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$(document).bind("click", function(e){
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if (e.button==0){ //hide all context menus (and their sub ULs) when left mouse button is clicked
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jquerycontextmenu.hidebox($, $('.jqcontextmenu'))
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}
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})
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if ($target.parents().filter('ul.jqcontextmenu').length>0) //if $target matches an element within the context menu markup, don't bind oncontextmenu to that element
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return
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$target.bind("contextmenu", function(e){
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jquerycontextmenu.hidebox($, $('.jqcontextmenu')) //hide all context menus (and their sub ULs)
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jquerycontextmenu.positionul($, $contextmenu, e)
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jquerycontextmenu.showbox($, $contextmenu, e)
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return false
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})
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}
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}
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jQuery.fn.addcontextmenu=function(contextmenuid){
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var $=jQuery
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return this.each(function(){ //return jQuery obj
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var $target=$(this)
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jquerycontextmenu.init($, $target, $('#'+contextmenuid))
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})
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};
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//Usage: $(elementselector).addcontextmenu('id_of_context_menu_on_page')
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