jquery-ui/ui/resizable.js

/*!
 * jQuery UI Resizable @VERSION
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Resizable
//>>group: Interactions
//>>description: Enables resize functionality for any element.
//>>docs: http://api.jqueryui.com/resizable/
//>>demos: http://jqueryui.com/resizable/
//>>css.structure: ../themes/base/core.css
//>>css.structure: ../themes/base/resizable.css
//>>css.theme: ../themes/base/theme.css

(function( factory ) {
	if ( typeof define === "function" && define.amd ) {

		// AMD. Register as an anonymous module.
		define([
			"jquery",
			"./core",
			"./mouse",
			"./widget"
		], factory );
	} else {

		// Browser globals
		factory( jQuery );
	}
}(function( $ ) {

$.widget("ui.resizable", $.ui.mouse, {
	version: "@VERSION",
	widgetEventPrefix: "resize",
	options: {
		alsoResize: false,
		animate: false,
		animateDuration: "slow",
		animateEasing: "swing",
		aspectRatio: false,
		autoHide: false,
		containment: false,
		ghost: false,
		grid: false,
		handles: "e,s,se",
		helper: false,
		maxHeight: null,
		maxWidth: null,
		minHeight: 10,
		minWidth: 10,
		// See #7960
		zIndex: 90,

		// callbacks
		resize: null,
		start: null,
		stop: null
	},

	_num: function( value ) {
		return parseInt( value, 10 ) || 0;
	},

	_isNumber: function( value ) {
		return !isNaN( parseInt( value, 10 ) );
	},

	_hasScroll: function( el, a ) {

		if ( $( el ).css( "overflow" ) === "hidden") {
			return false;
		}

		var scroll = ( a && a === "left" ) ? "scrollLeft" : "scrollTop",
			has = false;

		if ( el[ scroll ] > 0 ) {
			return true;
		}

		// TODO: determine which cases actually cause this to happen
		// if the element doesn't have the scroll set, see if it's possible to
		// set the scroll
		el[ scroll ] = 1;
		has = ( el[ scroll ] > 0 );
		el[ scroll ] = 0;
		return has;
	},

	_create: function() {

		var n, i, handle, axis, hname,
			that = this,
			o = this.options;
		this.element.addClass("ui-resizable");

		$.extend(this, {
			_aspectRatio: !!(o.aspectRatio),
			aspectRatio: o.aspectRatio,
			originalElement: this.element,
			_proportionallyResizeElements: [],
			_helper: o.helper || o.ghost || o.animate ? o.helper || "ui-resizable-helper" : null
		});

		// Wrap the element if it cannot hold child nodes
		if (this.element[0].nodeName.match(/^(canvas|textarea|input|select|button|img)$/i)) {

			this.element.wrap(
				$("<div class='ui-wrapper' style='overflow: hidden;'></div>").css({
					position: this.element.css("position"),
					width: this.element.outerWidth(),
					height: this.element.outerHeight(),
					top: this.element.css("top"),
					left: this.element.css("left")
				})
			);

			this.element = this.element.parent().data(
				"ui-resizable", this.element.resizable( "instance" )
			);

			this.elementIsWrapper = true;

			this.element.css({
				marginLeft: this.originalElement.css("marginLeft"),
				marginTop: this.originalElement.css("marginTop"),
				marginRight: this.originalElement.css("marginRight"),
				marginBottom: this.originalElement.css("marginBottom")
			});
			this.originalElement.css({
				marginLeft: 0,
				marginTop: 0,
				marginRight: 0,
				marginBottom: 0
			});
			// support: Safari
			// Prevent Safari textarea resize
			this.originalResizeStyle = this.originalElement.css("resize");
			this.originalElement.css("resize", "none");

			this._proportionallyResizeElements.push( this.originalElement.css({
				position: "static",
				zoom: 1,
				display: "block"
			}) );

			// support: IE9
			// avoid IE jump (hard set the margin)
			this.originalElement.css({ margin: this.originalElement.css("margin") });

			this._proportionallyResize();
		}

		this.handles = o.handles ||
			( !$(".ui-resizable-handle", this.element).length ?
				"e,s,se" : {
					n: ".ui-resizable-n",
					e: ".ui-resizable-e",
					s: ".ui-resizable-s",
					w: ".ui-resizable-w",
					se: ".ui-resizable-se",
					sw: ".ui-resizable-sw",
					ne: ".ui-resizable-ne",
					nw: ".ui-resizable-nw"
				} );

		if (this.handles.constructor === String) {

			if ( this.handles === "all") {
				this.handles = "n,e,s,w,se,sw,ne,nw";
			}

			n = this.handles.split(",");
			this.handles = {};

			for (i = 0; i < n.length; i++) {

				handle = $.trim(n[i]);
				hname = "ui-resizable-" + handle;
				axis = $("<div class='ui-resizable-handle " + hname + "'></div>");

				axis.css({ zIndex: o.zIndex });

				// TODO : What's going on here?
				if ("se" === handle) {
					axis.addClass("ui-icon ui-icon-gripsmall-diagonal-se");
				}

				this.handles[handle] = ".ui-resizable-" + handle;
				this.element.append(axis);
			}

		}

		this._renderAxis = function(target) {

			var i, axis, padPos, padWrapper;

			target = target || this.element;

			for (i in this.handles) {

				if (this.handles[i].constructor === String) {
					this.handles[i] = this.element.children( this.handles[ i ] ).first().show();
				}

				if (this.elementIsWrapper && this.originalElement[0].nodeName.match(/^(textarea|input|select|button)$/i)) {

					axis = $(this.handles[i], this.element);

					padWrapper = /sw|ne|nw|se|n|s/.test(i) ? axis.outerHeight() : axis.outerWidth();

					padPos = [ "padding",
						/ne|nw|n/.test(i) ? "Top" :
						/se|sw|s/.test(i) ? "Bottom" :
						/^e$/.test(i) ? "Right" : "Left" ].join("");

					target.css(padPos, padWrapper);

					this._proportionallyResize();

				}

				// TODO: What's that good for? There's not anything to be executed left
				if (!$(this.handles[i]).length) {
					continue;
				}
			}
		};

		// TODO: make renderAxis a prototype function
		this._renderAxis(this.element);

		this._handles = $(".ui-resizable-handle", this.element)
			.disableSelection();

		this._handles.mouseover(function() {
			if (!that.resizing) {
				if (this.className) {
					axis = this.className.match(/ui-resizable-(se|sw|ne|nw|n|e|s|w)/i);
				}
				that.axis = axis && axis[1] ? axis[1] : "se";
			}
		});

		if (o.autoHide) {
			this._handles.hide();
			$(this.element)
				.addClass("ui-resizable-autohide")
				.mouseenter(function() {
					if (o.disabled) {
						return;
					}
					$(this).removeClass("ui-resizable-autohide");
					that._handles.show();
				})
				.mouseleave(function() {
					if (o.disabled) {
						return;
					}
					if (!that.resizing) {
						$(this).addClass("ui-resizable-autohide");
						that._handles.hide();
					}
				});
		}

		this._mouseInit();

	},

	_destroy: function() {

		this._mouseDestroy();

		var wrapper,
			_destroy = function(exp) {
				$(exp)
					.removeClass("ui-resizable ui-resizable-disabled ui-resizable-resizing")
					.removeData("resizable")
					.removeData("ui-resizable")
					.unbind(".resizable")
					.find(".ui-resizable-handle")
						.remove();
			};

		// TODO: Unwrap at same DOM position
		if (this.elementIsWrapper) {
			_destroy(this.element);
			wrapper = this.element;
			this.originalElement.css({
				position: wrapper.css("position"),
				width: wrapper.outerWidth(),
				height: wrapper.outerHeight(),
				top: wrapper.css("top"),
				left: wrapper.css("left")
			}).insertAfter( wrapper );
			wrapper.remove();
		}

		this.originalElement.css("resize", this.originalResizeStyle);
		_destroy(this.originalElement);

		return this;
	},

	_mouseCapture: function(event) {
		var i, handle,
			capture = false;

		for (i in this.handles) {
			handle = $(this.handles[i])[0];
			if (handle === event.target || $.contains(handle, event.target)) {
				capture = true;
			}
		}

		return !this.options.disabled && capture;
	},

	_mouseStart: function(event) {

		var curleft, curtop, cursor,
			o = this.options,
			el = this.element;

		this.resizing = true;

		this._renderProxy();

		curleft = this._num(this.helper.css("left"));
		curtop = this._num(this.helper.css("top"));

		if (o.containment) {
			curleft += $(o.containment).scrollLeft() || 0;
			curtop += $(o.containment).scrollTop() || 0;
		}

		this.offset = this.helper.offset();
		this.position = { left: curleft, top: curtop };

		this.size = this._helper ? {
				width: this.helper.width(),
				height: this.helper.height()
			} : {
				width: el.width(),
				height: el.height()
			};

		this.originalSize = this._helper ? {
				width: el.outerWidth(),
				height: el.outerHeight()
			} : {
				width: el.width(),
				height: el.height()
			};

		this.sizeDiff = {
			width: el.outerWidth() - el.width(),
			height: el.outerHeight() - el.height()
		};

		this.originalPosition = { left: curleft, top: curtop };
		this.originalMousePosition = { left: event.pageX, top: event.pageY };

		this.aspectRatio = (typeof o.aspectRatio === "number") ?
			o.aspectRatio :
			((this.originalSize.width / this.originalSize.height) || 1);

		cursor = $(".ui-resizable-" + this.axis).css("cursor");
		$("body").css("cursor", cursor === "auto" ? this.axis + "-resize" : cursor);

		el.addClass("ui-resizable-resizing");
		this._propagate("start", event);
		return true;
	},

	_mouseDrag: function(event) {

		var data, props,
			smp = this.originalMousePosition,
			a = this.axis,
			dx = (event.pageX - smp.left) || 0,
			dy = (event.pageY - smp.top) || 0,
			trigger = this._change[a];

		this._updatePrevProperties();

		if (!trigger) {
			return false;
		}

		data = trigger.apply(this, [ event, dx, dy ]);

		this._updateVirtualBoundaries(event.shiftKey);
		if (this._aspectRatio || event.shiftKey) {
			data = this._updateRatio(data, event);
		}

		data = this._respectSize(data, event);

		this._updateCache(data);

		this._propagate("resize", event);

		props = this._applyChanges();

		if ( !this._helper && this._proportionallyResizeElements.length ) {
			this._proportionallyResize();
		}

		if ( !$.isEmptyObject( props ) ) {
			this._updatePrevProperties();
			this._trigger( "resize", event, this.ui() );
			this._applyChanges();
		}

		return false;
	},

	_mouseStop: function(event) {

		this.resizing = false;
		var pr, ista, soffseth, soffsetw, s, left, top,
			o = this.options, that = this;

		if (this._helper) {

			pr = this._proportionallyResizeElements;
			ista = pr.length && (/textarea/i).test(pr[0].nodeName);
			soffseth = ista && this._hasScroll(pr[0], "left") ? 0 : that.sizeDiff.height;
			soffsetw = ista ? 0 : that.sizeDiff.width;

			s = {
				width: (that.helper.width()  - soffsetw),
				height: (that.helper.height() - soffseth)
			};
			left = (parseInt(that.element.css("left"), 10) +
				(that.position.left - that.originalPosition.left)) || null;
			top = (parseInt(that.element.css("top"), 10) +
				(that.position.top - that.originalPosition.top)) || null;

			if (!o.animate) {
				this.element.css($.extend(s, { top: top, left: left }));
			}

			that.helper.height(that.size.height);
			that.helper.width(that.size.width);

			if (this._helper && !o.animate) {
				this._proportionallyResize();
			}
		}

		$("body").css("cursor", "auto");

		this.element.removeClass("ui-resizable-resizing");

		this._propagate("stop", event);

		if (this._helper) {
			this.helper.remove();
		}

		return false;

	},

	_updatePrevProperties: function() {
		this.prevPosition = {
			top: this.position.top,
			left: this.position.left
		};
		this.prevSize = {
			width: this.size.width,
			height: this.size.height
		};
	},

	_applyChanges: function() {
		var props = {};

		if ( this.position.top !== this.prevPosition.top ) {
			props.top = this.position.top + "px";
		}
		if ( this.position.left !== this.prevPosition.left ) {
			props.left = this.position.left + "px";
		}
		if ( this.size.width !== this.prevSize.width ) {
			props.width = this.size.width + "px";
		}
		if ( this.size.height !== this.prevSize.height ) {
			props.height = this.size.height + "px";
		}

		this.helper.css( props );

		return props;
	},

	_updateVirtualBoundaries: function(forceAspectRatio) {
		var pMinWidth, pMaxWidth, pMinHeight, pMaxHeight, b,
			o = this.options;

		b = {
			minWidth: this._isNumber(o.minWidth) ? o.minWidth : 0,
			maxWidth: this._isNumber(o.maxWidth) ? o.maxWidth : Infinity,
			minHeight: this._isNumber(o.minHeight) ? o.minHeight : 0,
			maxHeight: this._isNumber(o.maxHeight) ? o.maxHeight : Infinity
		};

		if (this._aspectRatio || forceAspectRatio) {
			pMinWidth = b.minHeight * this.aspectRatio;
			pMinHeight = b.minWidth / this.aspectRatio;
			pMaxWidth = b.maxHeight * this.aspectRatio;
			pMaxHeight = b.maxWidth / this.aspectRatio;

			if (pMinWidth > b.minWidth) {
				b.minWidth = pMinWidth;
			}
			if (pMinHeight > b.minHeight) {
				b.minHeight = pMinHeight;
			}
			if (pMaxWidth < b.maxWidth) {
				b.maxWidth = pMaxWidth;
			}
			if (pMaxHeight < b.maxHeight) {
				b.maxHeight = pMaxHeight;
			}
		}
		this._vBoundaries = b;
	},

	_updateCache: function(data) {
		this.offset = this.helper.offset();
		if (this._isNumber(data.left)) {
			this.position.left = data.left;
		}
		if (this._isNumber(data.top)) {
			this.position.top = data.top;
		}
		if (this._isNumber(data.height)) {
			this.size.height = data.height;
		}
		if (this._isNumber(data.width)) {
			this.size.width = data.width;
		}
	},

	_updateRatio: function( data ) {

		var cpos = this.position,
			csize = this.size,
			a = this.axis;

		if (this._isNumber(data.height)) {
			data.width = (data.height * this.aspectRatio);
		} else if (this._isNumber(data.width)) {
			data.height = (data.width / this.aspectRatio);
		}

		if (a === "sw") {
			data.left = cpos.left + (csize.width - data.width);
			data.top = null;
		}
		if (a === "nw") {
			data.top = cpos.top + (csize.height - data.height);
			data.left = cpos.left + (csize.width - data.width);
		}

		return data;
	},

	_respectSize: function( data ) {

		var o = this._vBoundaries,
			a = this.axis,
			ismaxw = this._isNumber(data.width) && o.maxWidth && (o.maxWidth < data.width),
			ismaxh = this._isNumber(data.height) && o.maxHeight && (o.maxHeight < data.height),
			isminw = this._isNumber(data.width) && o.minWidth && (o.minWidth > data.width),
			isminh = this._isNumber(data.height) && o.minHeight && (o.minHeight > data.height),
			dw = this.originalPosition.left + this.originalSize.width,
			dh = this.position.top + this.size.height,
			cw = /sw|nw|w/.test(a), ch = /nw|ne|n/.test(a);
		if (isminw) {
			data.width = o.minWidth;
		}
		if (isminh) {
			data.height = o.minHeight;
		}
		if (ismaxw) {
			data.width = o.maxWidth;
		}
		if (ismaxh) {
			data.height = o.maxHeight;
		}

		if (isminw && cw) {
			data.left = dw - o.minWidth;
		}
		if (ismaxw && cw) {
			data.left = dw - o.maxWidth;
		}
		if (isminh && ch) {
			data.top = dh - o.minHeight;
		}
		if (ismaxh && ch) {
			data.top = dh - o.maxHeight;
		}

		// Fixing jump error on top/left - bug #2330
		if (!data.width && !data.height && !data.left && data.top) {
			data.top = null;
		} else if (!data.width && !data.height && !data.top && data.left) {
			data.left = null;
		}

		return data;
	},

	_getPaddingPlusBorderDimensions: function( element ) {
		var i = 0,
			widths = [],
			borders = [
				element.css( "borderTopWidth" ),
				element.css( "borderRightWidth" ),
				element.css( "borderBottomWidth" ),
				element.css( "borderLeftWidth" )
			],
			paddings = [
				element.css( "paddingTop" ),
				element.css( "paddingRight" ),
				element.css( "paddingBottom" ),
				element.css( "paddingLeft" )
			];

		for ( ; i < 4; i++ ) {
			widths[ i ] = ( parseInt( borders[ i ], 10 ) || 0 );
			widths[ i ] += ( parseInt( paddings[ i ], 10 ) || 0 );
		}

		return {
			height: widths[ 0 ] + widths[ 2 ],
			width: widths[ 1 ] + widths[ 3 ]
		};
	},

	_proportionallyResize: function() {

		if (!this._proportionallyResizeElements.length) {
			return;
		}

		var prel,
			i = 0,
			element = this.helper || this.element;

		for ( ; i < this._proportionallyResizeElements.length; i++) {

			prel = this._proportionallyResizeElements[i];

			// TODO: Seems like a bug to cache this.outerDimensions
			// considering that we are in a loop.
			if (!this.outerDimensions) {
				this.outerDimensions = this._getPaddingPlusBorderDimensions( prel );
			}

			prel.css({
				height: (element.height() - this.outerDimensions.height) || 0,
				width: (element.width() - this.outerDimensions.width) || 0
			});

		}

	},

	_renderProxy: function() {

		var el = this.element, o = this.options;
		this.elementOffset = el.offset();

		if (this._helper) {

			this.helper = this.helper || $("<div style='overflow:hidden;'></div>");

			this.helper.addClass(this._helper).css({
				width: this.element.outerWidth() - 1,
				height: this.element.outerHeight() - 1,
				position: "absolute",
				left: this.elementOffset.left + "px",
				top: this.elementOffset.top + "px",
				zIndex: ++o.zIndex //TODO: Don't modify option
			});

			this.helper
				.appendTo("body")
				.disableSelection();

		} else {
			this.helper = this.element;
		}

	},

	_change: {
		e: function(event, dx) {
			return { width: this.originalSize.width + dx };
		},
		w: function(event, dx) {
			var cs = this.originalSize, sp = this.originalPosition;
			return { left: sp.left + dx, width: cs.width - dx };
		},
		n: function(event, dx, dy) {
			var cs = this.originalSize, sp = this.originalPosition;
			return { top: sp.top + dy, height: cs.height - dy };
		},
		s: function(event, dx, dy) {
			return { height: this.originalSize.height + dy };
		},
		se: function(event, dx, dy) {
			return $.extend(this._change.s.apply(this, arguments),
				this._change.e.apply(this, [ event, dx, dy ]));
		},
		sw: function(event, dx, dy) {
			return $.extend(this._change.s.apply(this, arguments),
				this._change.w.apply(this, [ event, dx, dy ]));
		},
		ne: function(event, dx, dy) {
			return $.extend(this._change.n.apply(this, arguments),
				this._change.e.apply(this, [ event, dx, dy ]));
		},
		nw: function(event, dx, dy) {
			return $.extend(this._change.n.apply(this, arguments),
				this._change.w.apply(this, [ event, dx, dy ]));
		}
	},

	_propagate: function(n, event) {
		$.ui.plugin.call(this, n, [ event, this.ui() ]);
		(n !== "resize" && this._trigger(n, event, this.ui()));
	},

	plugins: {},

	ui: function() {
		return {
			originalElement: this.originalElement,
			element: this.element,
			helper: this.helper,
			position: this.position,
			size: this.size,
			originalSize: this.originalSize,
			originalPosition: this.originalPosition
		};
	}

});

/*
 * Resizable Extensions
 */

$.ui.plugin.add("resizable", "animate", {

	stop: function( event ) {
		var that = $(this).resizable( "instance" ),
			o = that.options,
			pr = that._proportionallyResizeElements,
			ista = pr.length && (/textarea/i).test(pr[0].nodeName),
			soffseth = ista && that._hasScroll(pr[0], "left") ? 0 : that.sizeDiff.height,
			soffsetw = ista ? 0 : that.sizeDiff.width,
			style = { width: (that.size.width - soffsetw), height: (that.size.height - soffseth) },
			left = (parseInt(that.element.css("left"), 10) +
				(that.position.left - that.originalPosition.left)) || null,
			top = (parseInt(that.element.css("top"), 10) +
				(that.position.top - that.originalPosition.top)) || null;

		that.element.animate(
			$.extend(style, top && left ? { top: top, left: left } : {}), {
				duration: o.animateDuration,
				easing: o.animateEasing,
				step: function() {

					var data = {
						width: parseInt(that.element.css("width"), 10),
						height: parseInt(that.element.css("height"), 10),
						top: parseInt(that.element.css("top"), 10),
						left: parseInt(that.element.css("left"), 10)
					};

					if (pr && pr.length) {
						$(pr[0]).css({ width: data.width, height: data.height });
					}

					// propagating resize, and updating values for each animation step
					that._updateCache(data);
					that._propagate("resize", event);

				}
			}
		);
	}

});

$.ui.plugin.add( "resizable", "containment", {

	start: function() {
		var element, p, co, ch, cw, width, height,
			that = $( this ).resizable( "instance" ),
			o = that.options,
			el = that.element,
			oc = o.containment,
			ce = ( oc instanceof $ ) ? oc.get( 0 ) : ( /parent/.test( oc ) ) ? el.parent().get( 0 ) : oc;

		if ( !ce ) {
			return;
		}

		that.containerElement = $( ce );

		if ( /document/.test( oc ) || oc === document ) {
			that.containerOffset = {
				left: 0,
				top: 0
			};
			that.containerPosition = {
				left: 0,
				top: 0
			};

			that.parentData = {
				element: $( document ),
				left: 0,
				top: 0,
				width: $( document ).width(),
				height: $( document ).height() || document.body.parentNode.scrollHeight
			};
		} else {
			element = $( ce );
			p = [];
			$([ "Top", "Right", "Left", "Bottom" ]).each(function( i, name ) {
				p[ i ] = that._num( element.css( "padding" + name ) );
			});

			that.containerOffset = element.offset();
			that.containerPosition = element.position();
			that.containerSize = {
				height: ( element.innerHeight() - p[ 3 ] ),
				width: ( element.innerWidth() - p[ 1 ] )
			};

			co = that.containerOffset;
			ch = that.containerSize.height;
			cw = that.containerSize.width;
			width = ( that._hasScroll ( ce, "left" ) ? ce.scrollWidth : cw );
			height = ( that._hasScroll ( ce ) ? ce.scrollHeight : ch ) ;

			that.parentData = {
				element: ce,
				left: co.left,
				top: co.top,
				width: width,
				height: height
			};
		}
	},

	resize: function( event ) {
		var woset, hoset, isParent, isOffsetRelative,
			that = $( this ).resizable( "instance" ),
			o = that.options,
			co = that.containerOffset,
			cp = that.position,
			pRatio = that._aspectRatio || event.shiftKey,
			cop = {
				top: 0,
				left: 0
			},
			ce = that.containerElement,
			continueResize = true;

		if ( ce[ 0 ] !== document && ( /static/ ).test( ce.css( "position" ) ) ) {
			cop = co;
		}

		if ( cp.left < ( that._helper ? co.left : 0 ) ) {
			that.size.width = that.size.width +
				( that._helper ?
					( that.position.left - co.left ) :
					( that.position.left - cop.left ) );

			if ( pRatio ) {
				that.size.height = that.size.width / that.aspectRatio;
				continueResize = false;
			}
			that.position.left = o.helper ? co.left : 0;
		}

		if ( cp.top < ( that._helper ? co.top : 0 ) ) {
			that.size.height = that.size.height +
				( that._helper ?
					( that.position.top - co.top ) :
					that.position.top );

			if ( pRatio ) {
				that.size.width = that.size.height * that.aspectRatio;
				continueResize = false;
			}
			that.position.top = that._helper ? co.top : 0;
		}

		isParent = that.containerElement.get( 0 ) === that.element.parent().get( 0 );
		isOffsetRelative = /relative|absolute/.test( that.containerElement.css( "position" ) );

		if ( isParent && isOffsetRelative ) {
			that.offset.left = that.parentData.left + that.position.left;
			that.offset.top = that.parentData.top + that.position.top;
		} else {
			that.offset.left = that.element.offset().left;
			that.offset.top = that.element.offset().top;
		}

		woset = Math.abs( that.sizeDiff.width +
			(that._helper ?
				that.offset.left - cop.left :
				(that.offset.left - co.left)) );

		hoset = Math.abs( that.sizeDiff.height +
			(that._helper ?
				that.offset.top - cop.top :
				(that.offset.top - co.top)) );

		if ( woset + that.size.width >= that.parentData.width ) {
			that.size.width = that.parentData.width - woset;
			if ( pRatio ) {
				that.size.height = that.size.width / that.aspectRatio;
				continueResize = false;
			}
		}

		if ( hoset + that.size.height >= that.parentData.height ) {
			that.size.height = that.parentData.height - hoset;
			if ( pRatio ) {
				that.size.width = that.size.height * that.aspectRatio;
				continueResize = false;
			}
		}

		if ( !continueResize ) {
			that.position.left = that.prevPosition.left;
			that.position.top = that.prevPosition.top;
			that.size.width = that.prevSize.width;
			that.size.height = that.prevSize.height;
		}
	},

	stop: function() {
		var that = $( this ).resizable( "instance" ),
			o = that.options,
			co = that.containerOffset,
			cop = that.containerPosition,
			ce = that.containerElement,
			helper = $( that.helper ),
			ho = helper.offset(),
			w = helper.outerWidth() - that.sizeDiff.width,
			h = helper.outerHeight() - that.sizeDiff.height;

		if ( that._helper && !o.animate && ( /relative/ ).test( ce.css( "position" ) ) ) {
			$( this ).css({
				left: ho.left - cop.left - co.left,
				width: w,
				height: h
			});
		}

		if ( that._helper && !o.animate && ( /static/ ).test( ce.css( "position" ) ) ) {
			$( this ).css({
				left: ho.left - cop.left - co.left,
				width: w,
				height: h
			});
		}
	}
});

$.ui.plugin.add("resizable", "alsoResize", {

	start: function() {
		var that = $(this).resizable( "instance" ),
			o = that.options,
			_store = function(exp) {
				$(exp).each(function() {
					var el = $(this);
					el.data("ui-resizable-alsoresize", {
						width: parseInt(el.width(), 10), height: parseInt(el.height(), 10),
						left: parseInt(el.css("left"), 10), top: parseInt(el.css("top"), 10)
					});
				});
			};

		if (typeof(o.alsoResize) === "object" && !o.alsoResize.parentNode) {
			if (o.alsoResize.length) {
				o.alsoResize = o.alsoResize[0];
				_store(o.alsoResize);
			} else {
				$.each(o.alsoResize, function(exp) {
					_store(exp);
				});
			}
		} else {
			_store(o.alsoResize);
		}
	},

	resize: function(event, ui) {
		var that = $(this).resizable( "instance" ),
			o = that.options,
			os = that.originalSize,
			op = that.originalPosition,
			delta = {
				height: (that.size.height - os.height) || 0,
				width: (that.size.width - os.width) || 0,
				top: (that.position.top - op.top) || 0,
				left: (that.position.left - op.left) || 0
			},

			_alsoResize = function(exp, c) {
				$(exp).each(function() {
					var el = $(this), start = $(this).data("ui-resizable-alsoresize"), style = {},
						css = c && c.length ?
							c :
							el.parents(ui.originalElement[0]).length ?
								[ "width", "height" ] :
								[ "width", "height", "top", "left" ];

					$.each(css, function(i, prop) {
						var sum = (start[prop] || 0) + (delta[prop] || 0);
						if (sum && sum >= 0) {
							style[prop] = sum || null;
						}
					});

					el.css(style);
				});
			};

		if (typeof(o.alsoResize) === "object" && !o.alsoResize.nodeType) {
			$.each(o.alsoResize, function(exp, c) {
				_alsoResize(exp, c);
			});
		} else {
			_alsoResize(o.alsoResize);
		}
	},

	stop: function() {
		$(this).removeData("resizable-alsoresize");
	}
});

$.ui.plugin.add("resizable", "ghost", {

	start: function() {

		var that = $(this).resizable( "instance" ), o = that.options, cs = that.size;

		that.ghost = that.originalElement.clone();
		that.ghost
			.css({
				opacity: 0.25,
				display: "block",
				position: "relative",
				height: cs.height,
				width: cs.width,
				margin: 0,
				left: 0,
				top: 0
			})
			.addClass("ui-resizable-ghost")
			.addClass(typeof o.ghost === "string" ? o.ghost : "");

		that.ghost.appendTo(that.helper);

	},

	resize: function() {
		var that = $(this).resizable( "instance" );
		if (that.ghost) {
			that.ghost.css({
				position: "relative",
				height: that.size.height,
				width: that.size.width
			});
		}
	},

	stop: function() {
		var that = $(this).resizable( "instance" );
		if (that.ghost && that.helper) {
			that.helper.get(0).removeChild(that.ghost.get(0));
		}
	}

});

$.ui.plugin.add("resizable", "grid", {

	resize: function() {
		var outerDimensions,
			that = $(this).resizable( "instance" ),
			o = that.options,
			cs = that.size,
			os = that.originalSize,
			op = that.originalPosition,
			a = that.axis,
			grid = typeof o.grid === "number" ? [ o.grid, o.grid ] : o.grid,
			gridX = (grid[0] || 1),
			gridY = (grid[1] || 1),
			ox = Math.round((cs.width - os.width) / gridX) * gridX,
			oy = Math.round((cs.height - os.height) / gridY) * gridY,
			newWidth = os.width + ox,
			newHeight = os.height + oy,
			isMaxWidth = o.maxWidth && (o.maxWidth < newWidth),
			isMaxHeight = o.maxHeight && (o.maxHeight < newHeight),
			isMinWidth = o.minWidth && (o.minWidth > newWidth),
			isMinHeight = o.minHeight && (o.minHeight > newHeight);

		o.grid = grid;

		if (isMinWidth) {
			newWidth += gridX;
		}
		if (isMinHeight) {
			newHeight += gridY;
		}
		if (isMaxWidth) {
			newWidth -= gridX;
		}
		if (isMaxHeight) {
			newHeight -= gridY;
		}

		if (/^(se|s|e)$/.test(a)) {
			that.size.width = newWidth;
			that.size.height = newHeight;
		} else if (/^(ne)$/.test(a)) {
			that.size.width = newWidth;
			that.size.height = newHeight;
			that.position.top = op.top - oy;
		} else if (/^(sw)$/.test(a)) {
			that.size.width = newWidth;
			that.size.height = newHeight;
			that.position.left = op.left - ox;
		} else {
			if ( newHeight - gridY <= 0 || newWidth - gridX <= 0) {
				outerDimensions = that._getPaddingPlusBorderDimensions( this );
			}

			if ( newHeight - gridY > 0 ) {
				that.size.height = newHeight;
				that.position.top = op.top - oy;
			} else {
				newHeight = gridY - outerDimensions.height;
				that.size.height = newHeight;
				that.position.top = op.top + os.height - newHeight;
			}
			if ( newWidth - gridX > 0 ) {
				that.size.width = newWidth;
				that.position.left = op.left - ox;
			} else {
				newWidth = gridX - outerDimensions.width;
				that.size.width = newWidth;
				that.position.left = op.left + os.width - newWidth;
			}
		}
	}

});

return $.ui.resizable;

}));