steal('jquery', 'jquerypp/event/drag/core', 'jquerypp/dom/within', 'jquerypp/dom/compare', function ($){ 
var event = $.event; 
var eventNames = ["dropover", "dropon", "dropout", "dropinit", "dropmove", "dropend"] ; 
$.Drop = function (callbacks, element){ 
$.extend(this, callbacks); 
this.element = $(element); 
} 
; 
$.each(eventNames, function (){ 
event.special[this] = { 
add: function (handleObj){ 
var el = $(this), current = (el.data("dropEventCount") || 0); 
el.data("dropEventCount", current + 1); 
if (current == 0) { 
$.Drop.addElement(this); 
} 
} 
,
remove: function (){ 
var el = $(this), current = (el.data("dropEventCount") || 0); 
el.data("dropEventCount", current - 1); 
if (current <= 1) { 
$.Drop.removeElement(this); 
} 
} 
}
; 
} 
); 
$.extend($.Drop, { 
lowerName: "drop",
_rootElements: [] ,
_elements: $(),
last_active: [] ,
endName: "dropon",
addElement: function (el){ 
for (var i = 0; 
i < _AN_Read_length("length", this._rootElements); i++ ){ 
if (el == this._rootElements[i]) return ; 
} 
this._rootElements.push(el); 
} 
,
removeElement: function (el){ 
for (var i = 0; 
i < _AN_Read_length("length", this._rootElements); i++ ){ 
if (el == this._rootElements[i]) { 
this._rootElements.splice(i, 1); 
return ; 
} 
} 
} 
,
sortByDeepestChild: function (a, b){ 
var compare = a.element.compare(b.element); 
if (compare & 16 || compare & 4) return 1; 
if (compare & 8 || compare & 2) return -1; 
return 0; 
} 
,
isAffected: function (point, moveable, responder){ 
return ((responder.element != moveable.element) && (_AN_Read_length("length", responder.element.within(point[0], point[1], responder._cache)) == 1)); 
} 
,
deactivate: function (responder, mover, event){ 
mover.out(event, responder); 
responder.callHandlers(this.lowerName + 'out', responder.element[0], event, mover); 
} 
,
activate: function (responder, mover, event){ 
mover.over(event, responder); 
responder.callHandlers(this.lowerName + 'over', responder.element[0], event, mover); 
} 
,
move: function (responder, mover, event){ 
responder.callHandlers(this.lowerName + 'move', responder.element[0], event, mover); 
} 
,
compile: function (event, drag){ 
if (!this.dragging && !drag) { 
return ; 
} 
 else if (!this.dragging) { 
this.dragging = drag; 
this.last_active = [] ; 
} 
var el, drops, selector, dropResponders, newEls = [] , dragging = this.dragging; 
for (var i = 0; 
i < _AN_Read_length('length', this._rootElements); i++ ){ 
el = this._rootElements[i]; 
var drops = $.event.findBySelector(el, eventNames); 
for (selector in drops){ 
dropResponders = selector? jQuery(selector, el): [el] ; 
for (var e = 0; 
e < _AN_Read_length('length', dropResponders); e++ ){ 
if (this.addCallbacks(dropResponders[e], drops[selector], dragging)) { 
newEls.push(dropResponders[e]); 
} 
; 
} 
} 
} 
this.add(newEls, event, dragging); 
} 
,
addCallbacks: function (el, callbacks, onlyNew){ 
var origData = $.data(el, "_dropData"); 
if (!origData) { 
$.data(el, "_dropData", new $.Drop(callbacks, el)); 
return true ; 
} 
 else if (!onlyNew) { 
var origCbs = origData; 
for (var eventName in callbacks){ 
origCbs[eventName] = origCbs[eventName]? origCbs[eventName].concat(callbacks[eventName]): callbacks[eventName]; 
} 
return false ; 
} 
} 
,
add: function (newEls, event, drag, dragging){ 
var i = 0, drop; 
while (i < _AN_Read_length("length", newEls)){ 
drop = $.data(newEls[i], "_dropData"); 
drop.callHandlers(this.lowerName + 'init', newEls[i], event, drag); 
if (drop._canceled) { 
newEls.splice(i, 1); 
} 
 else { 
i++ ; 
} 
} 
this._elements.push.apply(this._elements, newEls); 
} 
,
show: function (point, moveable, event){ 
var element = moveable.element; 
if (!_AN_Read_length('length', this._elements)) return ; 
var respondable, affected = [] , propagate = true , i = 0, j, la, toBeActivated, aff, oldLastActive = this.last_active, responders = [] , self = this, drag; 
while (i < _AN_Read_length('length', this._elements)){ 
drag = $.data(this._elements[i], "_dropData"); 
if (!drag) { 
this._elements.splice(i, 1); 
} 
 else { 
i++ ; 
if (self.isAffected(point, moveable, drag)) { 
affected.push(drag); 
} 
} 
} 
affected.sort(this.sortByDeepestChild); 
event.stopRespondPropagate = function (){ 
propagate = false ; 
} 
; 
toBeActivated = affected.slice(); 
this.last_active = affected; 
for (j = 0; j < _AN_Read_length("length", oldLastActive); j++ ){ 
la = oldLastActive[j]; 
i = 0; 
while ((aff = toBeActivated[i])){ 
if (la == aff) { 
toBeActivated.splice(i, 1); 
break ; 
} 
 else { 
i++ ; 
} 
} 
if (!aff) { 
this.deactivate(la, moveable, event); 
} 
if (!propagate) return ; 
} 
for (var i = 0; 
i < _AN_Read_length("length", toBeActivated); i++ ){ 
this.activate(toBeActivated[i], moveable, event); 
if (!propagate) return ; 
} 
for (i = 0; i < _AN_Read_length("length", affected); i++ ){ 
this.move(affected[i], moveable, event); 
if (!propagate) return ; 
} 
} 
,
end: function (event, moveable){ 
var la, endName = this.lowerName + 'end', onEvent = $.Event(this.endName, event), dropData; 
for (var i = 0; 
i < _AN_Read_length('length', this.last_active); i++ ){ 
la = this.last_active[i]; 
if (this.isAffected(event.vector(), moveable, la) && la[this.endName]) { 
la.callHandlers(this.endName, null , onEvent, moveable); 
} 
if (onEvent.isPropagationStopped()) { 
break ; 
} 
} 
for (var r = 0; 
r < _AN_Read_length('length', this._elements); r++ ){ 
dropData = $.data(this._elements[r], "_dropData"); 
dropData && dropData.callHandlers(endName, null , event, moveable); 
} 
_AN_Call_clear("clear", this); 
} 
,
clear: function (){ 
this._elements.each(function (){ 
$.removeData(this, "_dropData"); 
} 
); 
this._elements = $(); 
delete this.dragging; 
} 
}
); 
$.Drag.responder = $.Drop; 
$.extend($.Drop.prototype, { 
callHandlers: function (method, el, ev, drag){ 
var length = this[method]? _AN_Read_length("length", this[method]): 0; 
for (var i = 0; 
i < length; i++ ){ 
this[method][i].call(el || this.element[0], ev, this, drag); 
} 
} 
,
cache: function (value){ 
this._cache = value != null ? value: true ; 
} 
,
cancel: function (){ 
this._canceled = true ; 
} 
}
); 
return $; 
} 
);