/*!
 * jStack - jQuery Event Stack Management

 * by Eric Garside (http://eric.garside.name)

 *

 * Dual licensed under:

 * MIT: http://www.opensource.org/licenses/mit-license.php

 * GPLv3: http://www.opensource.org/licenses/gpl-3.0.html

 */

(function($){

 

$.extend($.fn, {

// Determine the objects position in the cache, if any

cachePosition: function(){

return $.data(this[0]);

},

 

// Allow the user to splice an event into a specific position in the event cache

bindIntoStack: function(pos, type, func){

return this.each(function(){

var namespaces = type.split("."), // Explode out namespaces, if any

evType = namespaces.shift(), // Grab the actual type

el = $(this), // Use the jQuery reference to the first element instead of the domElement

position = el.cachePosition(); // Get the location of the element in the cache.

 

if (!position) return; // If we have a position, we can access the cache, which holds the jQuery event stack.

 

var cache = $.cache[ position ]; // Grab a reference to the cache so we can do some sanity checks

 

el.bind(type, func); // Now we need to bind the new function to the call stack through jQuery

 

if (!cache || // If we don't have the a pre-existing event cache, bind the function as a new entry and exit

!cache.events ||

!cache.events[ evType ]) return;

 

var events = cache.events[ evType ],// Grab a copy of the events cache for the given type

fromExpando = [], // [stackPosition => uuidIDInjQueryCache, ...]

toReplace = null, // A copy of the function we'll be replacing, if any

i = 0;

 

$.each(events, function(k){

fromExpando.push(k);

if (i == pos) toReplace = this; // If the positions are equal, this is the function we want to replace

++i;

})

 

if (!toReplace) return; // If the position in the stack has not yet been reached, there's no slicing to be done

 

var newPos = fromExpando.pop(); // The position we'll be placing in

 

// Perform the actual position swap in the cache

$.cache[ position ].events[ evType ][ fromExpando[pos] ] = $.cache[ position ].events[ evType ][ newPos ];

$.cache[ position ].events[ evType ][ newPos ] = toReplace;

})

 

return this;

}

});

 

})(jQuery);