/*

 * jQuery UI Draggable 1.6

 *

 * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)

 * Dual licensed under the MIT (MIT-LICENSE.txt)

 * and GPL (GPL-LICENSE.txt) licenses.

 *

 * http://docs.jquery.com/UI/Draggables

 *

 * Depends:

 *	ui.core.js

 */

(function($) {

$.widget("ui.draggable", $.extend({}, $.ui.mouse, {

	_init: function() {

		if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position")))

			this.element[0].style.position = 'relative';

		(this.options.cssNamespace && this.element.addClass(this.options.cssNamespace+"-draggable"));

		(this.options.disabled && this.element.addClass('ui-draggable-disabled'));

		this._mouseInit();

	},

	destroy: function() {

		if(!this.element.data('draggable')) return;

		this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable ui-draggable-dragging ui-draggable-disabled');

		this._mouseDestroy();

	},

	_mouseCapture: function(event) {

		var o = this.options;

		if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle'))

			return false;

		//Quit if we're not on a valid handle

		this.handle = this._getHandle(event);

		if (!this.handle)

			return false;

		return true;

	},

	_mouseStart: function(event) {

		var o = this.options;

		//Create and append the visible helper

		this.helper = this._createHelper(event);

		//Cache the helper size

		this._cacheHelperProportions();

		//If ddmanager is used for droppables, set the global draggable

		if($.ui.ddmanager)

			$.ui.ddmanager.current = this;

		/*

		 * - Position generation -

		 * This block generates everything position related - it's the core of draggables.

		 */

		//Cache the margins of the original element

		this._cacheMargins();

		//Store the helper's css position

		this.cssPosition = this.helper.css("position");

		this.scrollParent = this.helper.scrollParent();

		//The element's absolute position on the page minus margins

		this.offset = this.element.offset();

		this.offset = {

			top: this.offset.top - this.margins.top,

			left: this.offset.left - this.margins.left

		};

		$.extend(this.offset, {

			click: { //Where the click happened, relative to the element

				left: event.pageX - this.offset.left,

				top: event.pageY - this.offset.top

			},

			parent: this._getParentOffset(),

			relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper

		});

		//Adjust the mouse offset relative to the helper if 'cursorAt' is supplied

		if(o.cursorAt)

			this._adjustOffsetFromHelper(o.cursorAt);

		//Generate the original position

		this.originalPosition = this._generatePosition(event);

		//Set a containment if given in the options

		if(o.containment)

			this._setContainment();

		//Call plugins and callbacks

		this._propagate("start", event);

		//Recache the helper size

		this._cacheHelperProportions();

		//Prepare the droppable offsets

		if ($.ui.ddmanager && !o.dropBehaviour)

			$.ui.ddmanager.prepareOffsets(this, event);

		this.helper.addClass("ui-draggable-dragging");

		this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position

		return true;

	},

	_mouseDrag: function(event, noPropagation) {

		//Compute the helpers position

		this.position = this._generatePosition(event);

		this.positionAbs = this._convertPositionTo("absolute");

		//Call plugins and callbacks and use the resulting position if something is returned

		if(!noPropagation) this.position = this._propagate("drag", event) || this.position;

		if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';

		if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';

		if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);

		return false;

	},

	_mouseStop: function(event) {

		//If we are using droppables, inform the manager about the drop

		var dropped = false;

		if ($.ui.ddmanager && !this.options.dropBehaviour)

			var dropped = $.ui.ddmanager.drop(this, event);

		if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {

			var self = this;

			$(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {

				self._propagate("stop", event);

				self._clear();

			});

		} else {

			this._propagate("stop", event);

			this._clear();

		}

		return false;

	},

	_getHandle: function(event) {

		var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;

		$(this.options.handle, this.element)

			.find("*")

			.andSelf()

			.each(function() {

				if(this == event.target) handle = true;

			});

		return handle;

	},

	_createHelper: function(event) {

		var o = this.options;

		var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element);

		if(!helper.parents('body').length)

			helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));

		if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position")))

			helper.css("position", "absolute");

		return helper;

	},

	_adjustOffsetFromHelper: function(obj) {

		if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left;

		if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;

		if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top;

		if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;

	},

	_getParentOffset: function() {

		this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset();			//Get the offsetParent and cache its position

		if((this.offsetParent[0] == document.body && $.browser.mozilla)	//Ugly FF3 fix

		|| (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix

			po = { top: 0, left: 0 };

		return {

			top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),

			left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)

		};

	},

	_getRelativeOffset: function() {

		if(this.cssPosition == "relative") {

			var p = this.element.position();

			return {

				top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),

				left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()

			};

		} else {

			return { top: 0, left: 0 };

		}

	},

	_cacheMargins: function() {

		this.margins = {

			left: (parseInt(this.element.css("marginLeft"),10) || 0),

			top: (parseInt(this.element.css("marginTop"),10) || 0)

		};

	},

	_cacheHelperProportions: function() {

		this.helperProportions = {

			width: this.helper.outerWidth(),

			height: this.helper.outerHeight()

		};

	},

	_setContainment: function() {

		var o = this.options;

		if(o.containment == 'parent') o.containment = this.helper[0].parentNode;

		if(o.containment == 'document' || o.containment == 'window') this.containment = [

			0 - this.offset.relative.left - this.offset.parent.left,

			0 - this.offset.relative.top - this.offset.parent.top,

			$(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),

			($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)

		];

		if(!(/^(document|window|parent)$/).test(o.containment)) {

			var ce = $(o.containment)[0];

			var co = $(o.containment).offset();

			var over = ($(ce).css("overflow") != 'hidden');

			this.containment = [

				co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.margins.left,

				co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.margins.top,

				co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left,

				co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top

			];

		}

	},

	_convertPositionTo: function(d, pos) {

		if(!pos) pos = this.position;

		var mod = d == "absolute" ? 1 : -1;

		var scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

		return {

			top: (

				pos.top																	// the calculated relative position

				+ this.offset.relative.top	* mod										// Only for relative positioned nodes: Relative offset from element to offset parent

				+ this.offset.parent.top * mod											// The offsetParent's offset without borders (offset + border)

				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod

				+ this.margins.top * mod												//Add the margin (you don't want the margin counting in intersection methods)

			),

			left: (

				pos.left																// the calculated relative position

				+ this.offset.relative.left	* mod										// Only for relative positioned nodes: Relative offset from element to offset parent

				+ this.offset.parent.left * mod											// The offsetParent's offset without borders (offset + border)

				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) ) * mod

				+ this.margins.left * mod												//Add the margin (you don't want the margin counting in intersection methods)

			)

		};

	},

	_generatePosition: function(event) {

		var o = this.options, scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

		var position = {

			top: (

				event.pageY																// The absolute mouse position

				- this.offset.click.top													// Click offset (relative to the element)

				- this.offset.relative.top												// Only for relative positioned nodes: Relative offset from element to offset parent

				- this.offset.parent.top												// The offsetParent's offset without borders (offset + border)

				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) )

			),

			left: (

				event.pageX																// The absolute mouse position

				- this.offset.click.left												// Click offset (relative to the element)

				- this.offset.relative.left												// Only for relative positioned nodes: Relative offset from element to offset parent

				- this.offset.parent.left												// The offsetParent's offset without borders (offset + border)

				+ ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() )

			)

		};

		if(!this.originalPosition) return position;										//If we are not dragging yet, we won't check for options

		/*

		 * - Position constraining -

		 * Constrain the position to a mix of grid, containment.

		 */

		if(this.containment) {

			if(position.left < this.containment[0]) position.left = this.containment[0];

			if(position.top < this.containment[1]) position.top = this.containment[1];

			if(position.left > this.containment[2]) position.left = this.containment[2];

			if(position.top > this.containment[3]) position.top = this.containment[3];

		}

		if(o.grid) {

			var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1];

			position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

			var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0];

			position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;

		}

		return position;

	},

	_clear: function() {

		this.helper.removeClass("ui-draggable-dragging");

		if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove();

		//if($.ui.ddmanager) $.ui.ddmanager.current = null;

		this.helper = null;

		this.cancelHelperRemoval = false;

	},

	// From now on bulk stuff - mainly helpers

	_propagate: function(n, event) {

		$.ui.plugin.call(this, n, [event, this._uiHash()]);

		if(n == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins

		return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [event, this._uiHash()], this.options[n]);

	},

	plugins: {},

	_uiHash: function(event) {

		return {

			helper: this.helper,

			position: this.position,

			absolutePosition: this.positionAbs,

			options: this.options

		};

	}

}));

$.extend($.ui.draggable, {

	version: "1.6",

	defaults: {

		appendTo: "parent",

		axis: false,

		cancel: ":input",

		connectToSortable: false,

		containment: false,

		cssNamespace: "ui",

		cursor: "default",

		cursorAt: null,

		delay: 0,

		distance: 1,

		grid: false,

		handle: false,

		helper: "original",

		iframeFix: false,

		opacity: 1,

		refreshPositions: false,

		revert: false,

		revertDuration: 500,

		scope: "default",

		scroll: true,

		scrollSensitivity: 20,

		scrollSpeed: 20,

		snap: false,

		snapMode: "both",

		snapTolerance: 20,

		stack: false,

		zIndex: null

	}

});

$.ui.plugin.add("draggable", "connectToSortable", {

	start: function(event, ui) {

		var inst = $(this).data("draggable");

		inst.sortables = [];

		$(ui.options.connectToSortable).each(function() {

			// 'this' points to a string, and should therefore resolved as query, but instead, if the string is assigned to a variable, it loops through the strings properties,

			// so we have to append '' to make it anonymous again

			$(this+'').each(function() {

				if($.data(this, 'sortable')) {

					var sortable = $.data(this, 'sortable');

					inst.sortables.push({

						instance: sortable,

						shouldRevert: sortable.options.revert

					});

					sortable._refreshItems();	//Do a one-time refresh at start to refresh the containerCache

					sortable._propagate("activate", event, inst);

				}

			});

		});

	},

	stop: function(event, ui) {

		//If we are still over the sortable, we fake the stop event of the sortable, but also remove helper

		var inst = $(this).data("draggable");

		$.each(inst.sortables, function() {

			if(this.instance.isOver) {

				this.instance.isOver = 0;

				inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance

				this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)

				if(this.shouldRevert) this.instance.options.revert = true; //revert here

				this.instance._mouseStop(event);

				//Also propagate receive event, since the sortable is actually receiving a element

				this.instance.element.triggerHandler("sortreceive", [event, $.extend(this.instance._ui(), { sender: inst.element })], this.instance.options["receive"]);

				this.instance.options.helper = this.instance.options._helper;

				if(inst.options.helper == 'original') {

					this.instance.currentItem.css({ top: 'auto', left: 'auto' });

				}

			} else {

				this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance

				this.instance._propagate("deactivate", event, inst);

			}

		});

	},

	drag: function(event, ui) {

		var inst = $(this).data("draggable"), self = this;

		var checkPos = function(o) {

			var dyClick = this.offset.click.top, dxClick = this.offset.click.left;

			var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left;

			var itemHeight = o.height, itemWidth = o.width;

			var itemTop = o.top, itemLeft = o.left;

			return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth);

		};

		$.each(inst.sortables, function(i) {

			if(checkPos.call(inst, this.instance.containerCache)) {

				//If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once

				if(!this.instance.isOver) {

					this.instance.isOver = 1;

					//Now we fake the start of dragging for the sortable instance,

					//by cloning the list group item, appending it to the sortable and using it as inst.currentItem

					//We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)

					this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);

					this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it

					this.instance.options.helper = function() { return ui.helper[0]; };

					event.target = this.instance.currentItem[0];

					this.instance._mouseCapture(event, true);

					this.instance._mouseStart(event, true, true);

					//Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes

					this.instance.offset.click.top = inst.offset.click.top;

					this.instance.offset.click.left = inst.offset.click.left;

					this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;

					this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;

					inst._propagate("toSortable", event);

				}

				//Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable

				if(this.instance.currentItem) this.instance._mouseDrag(event);

			} else {

				//If it doesn't intersect with the sortable, and it intersected before,

				//we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval

				if(this.instance.isOver) {

					this.instance.isOver = 0;

					this.instance.cancelHelperRemoval = true;

					this.instance.options.revert = false; //No revert here

					this.instance._mouseStop(event, true);

					this.instance.options.helper = this.instance.options._helper;

					//Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size

					this.instance.currentItem.remove();

					if(this.instance.placeholder) this.instance.placeholder.remove();

					inst._propagate("fromSortable", event);

				}

			};

		});

	}

});

$.ui.plugin.add("draggable", "cursor", {

	start: function(event, ui) {

		var t = $('body');

		if (t.css("cursor")) ui.options._cursor = t.css("cursor");

		t.css("cursor", ui.options.cursor);

	},

	stop: function(event, ui) {

		if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);

	}

});

$.ui.plugin.add("draggable", "iframeFix", {

	start: function(event, ui) {

		$(ui.options.iframeFix === true ? "iframe" : ui.options.iframeFix).each(function() {

			$('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')

			.css({

				width: this.offsetWidth+"px", height: this.offsetHeight+"px",