(function($) {
if (window.Node && Node.prototype && !Node.prototype.contains) {
Node.prototype.contains = function (arg) {
return !!(this.compareDocumentPosition(arg) & 16);
};
}
$.fn.extend({
sortable: function(options) {
var args = Array.prototype.slice.call(arguments, 1);
if (options == "serialize" || options == "toArray")
return $.data(this[0], "sortable")[options](arguments[1]);
return this.each(function() {
if (typeof options == "string") {
var sort = $.data(this, "sortable");
if (sort) sort[options].apply(sort, args);
} else if(!$.data(this, "sortable"))
new $.ui.sortable(this, options);
});
}
});
$.ui.sortable = function(element, options) {
//Initialize needed constants
var self = this;
this.element = $(element);
this.containerCache = {};
$.data(element, "sortable", this);
this.element.addClass("ui-sortable");
//Prepare the passed options
this.options = $.extend({}, options);
var o = this.options;
$.extend(o, {
items: this.options.items || '> *',
zIndex: this.options.zIndex || 1000,
startCondition: function() {
return !self.options.disabled;
}
});
$(element).bind("setData.sortable", function(event, key, value){
self.options[key] = value;
}).bind("getData.sortable", function(event, key){
return self.options[key];
});
//Get the items
this.refresh();
//Let's determine if the items are floating
this.floating = this.items.length ? (/left|right/).test(this.items[0].item.css('float')) : false;
//Let's determine the parent's offset
if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
this.offset = this.element.offset();
//Initialize mouse events for interaction
this.element.mouseInteraction({
executor: this,
delay: o.delay,
distance: o.distance || 0,
dragPrevention: o.prevention ? o.prevention.toLowerCase().split(',') : ['input','textarea','button','select','option'],
start: this.start,
stop: this.stop,
drag: this.drag,
condition: function(e) {
if(this.options.disabled || this.options.type == 'static') return false;
//Find out if the clicked node (or one of its parents) is a actual item in this.items
var currentItem = null, nodes = $(e.target).parents().each(function() {
if($.data(this, 'sortable-item')) {
currentItem = $(this);
return false;
}
});
if($.data(e.target, 'sortable-item')) currentItem = $(e.target);
if(!currentItem) return false;
if(this.options.handle) {
var validHandle = false;
$(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
if(!validHandle) return false;
}
this.currentItem = currentItem;
return true;
}
});
//Prepare cursorAt
if(o.cursorAt && o.cursorAt.constructor == Array)
o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] };
};
$.extend($.ui.sortable.prototype, {
plugins: {},
ui: function(inst) {
return {
helper: (inst || this)["helper"],
placeholder: (inst || this)["placeholder"] || $([]),
position: (inst || this)["position"].current,
absolutePosition: (inst || this)["position"].absolute,
instance: this,
options: this.options,
element: this.element,
item: (inst || this)["currentItem"],
sender: inst ? inst.element : null
};
},
propagate: function(n,e,inst) {
$.ui.plugin.call(this, n, [e, this.ui(inst)]);
this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
},
serialize: function(o) {
var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
var str = []; o = o || {};
items.each(function() {
var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
});
return str.join('&');
},
toArray: function(attr) {
var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
var ret = [];
items.each(function() { ret.push($(this).attr(attr || 'id')); });
return ret;
},
enable: function() {
this.element.removeClass("ui-sortable-disabled");
this.options.disabled = false;
},
disable: function() {
this.element.addClass("ui-sortable-disabled");
this.options.disabled = true;
},
/* Be careful with the following core functions */
intersectsWith: function(item) {
var x1 = this.position.absolute.left, x2 = x1 + this.helperProportions.width,
    y1 = this.position.absolute.top, y2 = y1 + this.helperProportions.height;
var l = item.left, r = l + item.width,
    t = item.top,  b = t + item.height;
return (   l < x1 + (this.helperProportions.width  / 2)    // Right Half
&&     x2 - (this.helperProportions.width  / 2) < r    // Left Half
&& t < y1 + (this.helperProportions.height / 2)        // Bottom Half
&&     y2 - (this.helperProportions.height / 2) < b ); // Top Half
},
intersectsWithEdge: function(item) {
var x1 = this.position.absolute.left, x2 = x1 + this.helperProportions.width,
    y1 = this.position.absolute.top, y2 = y1 + this.helperProportions.height;
var l = item.left, r = l + item.width,
    t = item.top,  b = t + item.height;
if (!(   l < x1 + (this.helperProportions.width  / 2)    // Right Half
&&     x2 - (this.helperProportions.width  / 2) < r    // Left Half
&& t < y1 + (this.helperProportions.height / 2)        // Bottom Half
&&     y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
if(this.floating) {
if(x2 > l && x1 < l) return 1; //Crosses left edge
if(x1 < r && x2 > r) return 2; //Crosses right edge
} else {
if(y2 > t && y1 < t) return 1; //Crosses top edge
if(y1 < b && y2 > b) return 2; //Crosses bottom edge
}
return false;
},
//This method checks approximately if the item is dragged in a container, but doesn't touch any items
inEmptyZone: function(container) {
if(!$(container.options.items, container.element).length) {
return container.options.dropOnEmpty ? true : false;
};
var last = $(container.options.items, container.element).not('.ui-sortable-helper'); last = $(last[last.length-1]);
var top = last.offset()[this.floating ? 'left' : 'top'] + last[0][this.floating ? 'offsetWidth' : 'offsetHeight'];
return (this.position.absolute[this.floating ? 'left' : 'top'] > top);
},
refresh: function() {
this.refreshItems();
this.refreshPositions();
},
refreshItems: function() {
this.items = [];
this.containers = [this];
var items = this.items;
var queries = [$(this.options.items, this.element)];
if(this.options.connectWith) {
for (var i = this.options.connectWith.length - 1; i >= 0; i--){
var cur = $(this.options.connectWith[i]);
for (var j = cur.length - 1; j >= 0; j--){
var inst = $.data(cur[j], 'sortable');
if(inst && !inst.options.disabled) {
queries.push($(inst.options.items, inst.element));
this.containers.push(inst);
}
};
};
}
for (var i = queries.length - 1; i >= 0; i--){
queries[i].each(function() {
$.data(this, 'sortable-item', true); // Data for target checking (mouse manager)
items.push({
item: $(this),
width: 0, height: 0,
left: 0, top: 0
});
});
};
},
refreshPositions: function(fast) {
for (var i = this.items.length - 1; i >= 0; i--){
if(!fast) this.items[i].width = this.items[i].item.outerWidth();
if(!fast) this.items[i].height = this.items[i].item.outerHeight();
var p = this.items[i].item.offset();
this.items[i].left = p.left;
this.items[i].top = p.top;
};
for (var i = this.containers.length - 1; i >= 0; i--){
var p =this.containers[i].element.offset();
this.containers[i].containerCache.left = p.left;
this.containers[i].containerCache.top = p.top;
this.containers[i].containerCache.width= this.containers[i].element.outerWidth();
this.containers[i].containerCache.height= this.containers[i].element.outerHeight();
};
},
destroy: function() {
this.element
.removeClass("ui-sortable ui-sortable-disabled")
.removeData("sortable")
.unbind(".sortable")
.removeMouseInteraction();
for ( var i = this.items.length - 1; i >= 0; i-- )
this.items[i].item.removeData("sortable-item");
},
createPlaceholder: function(that) {
(that || this).placeholderElement = this.options.placeholderElement ? $(this.options.placeholderElement, (that || this).currentItem) : (that || this).currentItem;
(that || this).placeholder = $('<div></div>')
.addClass(this.options.placeholder)
.appendTo('body')
.css({ position: 'absolute' })
.css((that || this).placeholderElement.offset())
.css({ width: (that || this).placeholderElement.outerWidth(), height: (that || this).placeholderElement.outerHeight() })
;
},
contactContainers: function(e) {
for (var i = this.containers.length - 1; i >= 0; i--){
if(this.intersectsWith(this.containers[i].containerCache)) {
if(!this.containers[i].containerCache.over) {
if(!this.containers[i].element[0].contains(this.currentItem[0])) {
//When entering a new container, we will find the item with the least distance and append our item near it
var dist = 10000; var itemWithLeastDistance = null; var base = this.position.absolute[this.containers[i].floating ? 'left' : 'top'];
for (var j = this.items.length - 1; j >= 0; j--) {
if(!this.containers[i].element[0].contains(this.items[j].item[0])) continue;
var cur = this.items[j][this.containers[i].floating ? 'left' : 'top'];
if(Math.abs(cur - base) < dist) {
dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
}
}
//We also need to exchange the placeholder
if(this.placeholder) this.placeholder.remove();
if(this.containers[i].options.placeholder) {
this.containers[i].createPlaceholder(this);
} else {
this.placeholder = null; this.placeholderElement = null;
}
itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
this.propagate("change", e); //Call plugins and callbacks
this.containers[i].propagate("change", e, this); //Call plugins and callbacks
}
this.containers[i].propagate("over", e, this);
this.containers[i].containerCache.over = 1;
}
} else {
if(this.containers[i].containerCache.over) {
this.containers[i].propagate("out", e, this);
this.containers[i].containerCache.over = 0;
}
}
};
},
start: function(e,el) {
var o = this.options;
this.refresh();
//Create and append the visible helper
this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
if(!this.helper.parents('body').length) this.helper.appendTo(o.appendTo || this.currentItem[0].parentNode); //Add the helper to the DOM if that didn't happen already
this.helper.css({ position: 'absolute', clear: 'both'}).addClass('ui-sortable-helper'); //Position it absolutely and add a helper class
//Prepare variables for position generation
$.extend(this, {
offsetParent: this.helper.offsetParent(),
offsets: {
absolute: this.currentItem.offset()
},
mouse: {
start: { top: e.pageY, left: e.pageX }
}
});
//The relative click offset
this.offsets.parent = this.offsetParent.offset();
this.clickOffset = { left: e.pageX - this.offsets.absolute.left, top: e.pageY - this.offsets.absolute.top };
this.originalPosition = {
left: this.offsets.absolute.left - this.offsets.parent.left,
top: this.offsets.absolute.top - this.offsets.parent.top
}
//Generate a flexible offset that will later be subtracted from e.pageX/Y
//I hate margins - they need to be removed before positioning the element absolutely..
this.offset = {
left: e.pageX - this.originalPosition.left,
top: e.pageY - this.originalPosition.top
};
//Save the first time position
$.extend(this, {
position: {
current: { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left },
absolute: { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top },
dom: this.currentItem.prev()[0]
}
});
//If o.placeholder is used, create a new element at the given position with the class
if(o.placeholder) this.createPlaceholder();
this.propagate("start", e); //Call plugins and callbacks
this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions
//If we have something in cursorAt, we'll use it
if(o.cursorAt) {
if(o.cursorAt.top != undefined || o.cursorAt.bottom != undefined) {
this.offset.top -= this.clickOffset.top - (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom));
this.clickOffset.top = (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom));
}
if(o.cursorAt.left != undefined || o.cursorAt.right != undefined) {
this.offset.left -= this.clickOffset.left - (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right));
this.clickOffset.left = (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right));
}
}
//if(this.options.placeholder != 'clone') $(this.currentItem).css('visibility', 'hidden'); //Set the original element visibility to hidden to still fill out the white space
if(this.options.placeholder != 'clone') $(this.currentItem).css('opacity','.3').css('filter','alpha(opacity=30)');
for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i].propagate("activate", e, this); } //Post 'activate' events to possible containers
//Prepare possible droppables
if($.ui.ddmanager) $.ui.ddmanager.current = this;
if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
this.dragging = true;
return false;
},
stop: function(e) {
this.propagate("stop", e); //Call plugins and trigger callbacks
if(this.position.dom != this.currentItem.prev()[0]) this.propagate("update", e); //Trigger update callback if the DOM position has changed
if(!this.element[0].contains(this.currentItem[0])) { //Node was moved out of the current element
this.propagate("remove", e);
for (var i = this.containers.length - 1; i >= 0; i--){
if(this.containers[i].element[0].contains(this.currentItem[0])) {
this.containers[i].propagate("update", e, this);
this.containers[i].propagate("receive", e, this);
}
};
};
//Post events to containers
for (var i = this.containers.length - 1; i >= 0; i--){
this.containers[i].propagate("deactivate", e, this);
if(this.containers[i].containerCache.over) {
this.containers[i].propagate("out", e, this);
this.containers[i].containerCache.over = 0;
}
}
//If we are using droppables, inform the manager about the drop
if ($.ui.ddmanager && !this.options.dropBehaviour) $.ui.ddmanager.drop(this, e);
this.dragging = false;
if(this.cancelHelperRemoval) return false;
//$(this.currentItem).css('visibility', '');
$(this.currentItem).css('opacity','1').css('filter','alpha(opacity=100)');
if(this.placeholder) this.placeholder.remove();
this.helper.remove();

return false;

},
drag: function(e) {
//Compute the helpers position
this.direction = (this.floating && this.position.absolute.left > e.pageX - this.clickOffset.left) || (this.position.absolute.top > e.pageY - this.clickOffset.top) ? 'down' : 'up';
this.position.current = { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left };
this.position.absolute = { top: e.pageY - this.clickOffset.top, left: e.pageX - this.clickOffset.left };
//Rearrange
for (var i = this.items.length - 1; i >= 0; i--) {
var intersection = this.intersectsWithEdge(this.items[i]);
if(!intersection) continue;
if(this.items[i].item[0] != this.currentItem[0] //cannot intersect with itself
&&this.items[i].item[this.direction == 'down' ? 'prev' : 'next']()[0] != this.currentItem[0] //no useless actions that have been done before
&&!this.currentItem[0].contains(this.items[i].item[0]) //no action if the item moved is the parent of the item checked
&& (this.options.type == 'semi-dynamic' ? !this.element[0].contains(this.items[i].item[0]) : true)
) {
this.direction = intersection == 1 ? "down" : "up";
this.rearrange(e, this.items[i]);
this.propagate("change", e); //Call plugins and callbacks
break;
}
}
//Post events to containers
this.contactContainers(e);
//Interconnect with droppables
if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
this.propagate("sort", e); //Call plugins and callbacks
this.helper.css({ left: this.position.absolute.left+'px', top: this.position.absolute.top+'px' }); // Stick the helper
return false;
},
rearrange: function(e, i, a) {
a ? a.append(this.currentItem) : i.item[this.direction == 'down' ? 'before' : 'after'](this.currentItem);
this.refreshPositions(true); //Precompute after each DOM insertion, NOT on mousemove
if(this.placeholderElement) this.placeholder.css(this.placeholderElement.offset());
}
});
})(jQuery);