jquery-ui/ui/ui.resizable.js

/*
 * jQuery UI Resizable
 *
 * Copyright (c) 2008 Paul Bakaus
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * http://docs.jquery.com/UI/Resizables
 *
 * Depends:
 *	ui.core.js
 */
(function($) {

$.widget("ui.resizable", $.extend($.ui.mouse, {
	init: function() {

		var self = this, o = this.options;

		var elpos = this.element.css('position');
		
		this.originalElement = this.element;
		
		// simulate .ui-resizable { position: relative; }
		this.element.addClass("ui-resizable").css({ position: /static/.test(elpos) ? 'relative' : elpos });
		
		$.extend(o, {
			_aspectRatio: !!(o.aspectRatio),
			helper: o.helper || o.ghost || o.animate ? o.helper || 'proxy' : null,
			knobHandles: o.knobHandles === true ? 'ui-resizable-knob-handle' : o.knobHandles
		});
		
		//Default Theme
		var aBorder = '1px solid #DEDEDE';
		
		o.defaultTheme = {
			'ui-resizable': { display: 'block' },
			'ui-resizable-handle': { position: 'absolute', background: '#F2F2F2', fontSize: '0.1px' },
			'ui-resizable-n': { cursor: 'n-resize', height: '4px', left: '0px', right: '0px', borderTop: aBorder },
			'ui-resizable-s': { cursor: 's-resize', height: '4px', left: '0px', right: '0px', borderBottom: aBorder },
			'ui-resizable-e': { cursor: 'e-resize', width: '4px', top: '0px', bottom: '0px', borderRight: aBorder },
			'ui-resizable-w': { cursor: 'w-resize', width: '4px', top: '0px', bottom: '0px', borderLeft: aBorder },
			'ui-resizable-se': { cursor: 'se-resize', width: '4px', height: '4px', borderRight: aBorder, borderBottom: aBorder },
			'ui-resizable-sw': { cursor: 'sw-resize', width: '4px', height: '4px', borderBottom: aBorder, borderLeft: aBorder },
			'ui-resizable-ne': { cursor: 'ne-resize', width: '4px', height: '4px', borderRight: aBorder, borderTop: aBorder },
			'ui-resizable-nw': { cursor: 'nw-resize', width: '4px', height: '4px', borderLeft: aBorder, borderTop: aBorder }
		};
		
		o.knobTheme = {
			'ui-resizable-handle': { background: '#F2F2F2', border: '1px solid #808080', height: '8px', width: '8px' },
			'ui-resizable-n': { cursor: 'n-resize', top: '0px', left: '45%' },
			'ui-resizable-s': { cursor: 's-resize', bottom: '0px', left: '45%' },
			'ui-resizable-e': { cursor: 'e-resize', right: '0px', top: '45%' },
			'ui-resizable-w': { cursor: 'w-resize', left: '0px', top: '45%' },
			'ui-resizable-se': { cursor: 'se-resize', right: '0px', bottom: '0px' },
			'ui-resizable-sw': { cursor: 'sw-resize', left: '0px', bottom: '0px' },
			'ui-resizable-nw': { cursor: 'nw-resize', left: '0px', top: '0px' },
			'ui-resizable-ne': { cursor: 'ne-resize', right: '0px', top: '0px' }
		};
		
		o._nodeName = this.element[0].nodeName;
		
		//Wrap the element if it cannot hold child nodes
		if(o._nodeName.match(/canvas|textarea|input|select|button|img/i)) {
			var el = this.element;
			
			//Opera fixing relative position
			if (/relative/.test(el.css('position')) && $.browser.opera)
				el.css({ position: 'relative', top: 'auto', left: 'auto' });
			
			//Create a wrapper element and set the wrapper to the new current internal element
			el.wrap(
				$('<div class="ui-wrapper"	style="overflow: hidden;"></div>').css( {
					position: el.css('position'),
					width: el.outerWidth(),
					height: el.outerHeight(),
					top: el.css('top'),
					left: el.css('left')
				})
			);
			
			var oel = this.element; this.element = this.element.parent();
			
			// store instance on wrapper
			this.element.data('resizable', this); 
			
			//Move margins to the wrapper
			this.element.css({ marginLeft: oel.css("marginLeft"), marginTop: oel.css("marginTop"),
				marginRight: oel.css("marginRight"), marginBottom: oel.css("marginBottom")
			});
			
			oel.css({ marginLeft: 0, marginTop: 0, marginRight: 0, marginBottom: 0});
			
			//Prevent Safari textarea resize
			if ($.browser.safari && o.preventDefault) oel.css('resize', 'none');
			
			o.proportionallyResize = oel.css({ position: 'static', zoom: 1, display: 'block' });
			
			// avoid IE jump
			this.element.css({ margin: oel.css('margin') });
			
			// fix handlers offset
			this._proportionallyResize();
		}
		
		if(!o.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(o.handles.constructor == String) {
			
			o.zIndex = o.zIndex || 1000;
			
			if(o.handles == 'all') o.handles = 'n,e,s,w,se,sw,ne,nw';
			
			var n = o.handles.split(","); o.handles = {};
			
			// insertions are applied when don't have theme loaded
			var insertionsDefault = {
				handle: 'position: absolute; display: none; overflow:hidden;',
				n: 'top: 0pt; width:100%;',
				e: 'right: 0pt; height:100%;',
				s: 'bottom: 0pt; width:100%;',
				w: 'left: 0pt; height:100%;',
				se: 'bottom: 0pt; right: 0px;',
				sw: 'bottom: 0pt; left: 0px;',
				ne: 'top: 0pt; right: 0px;',
				nw: 'top: 0pt; left: 0px;'
			};
			
			for(var i = 0; i < n.length; i++) {
				var handle = $.trim(n[i]), dt = o.defaultTheme, hname = 'ui-resizable-'+handle, loadDefault = !$.ui.css(hname) && !o.knobHandles, userKnobClass = $.ui.css('ui-resizable-knob-handle'), 
							allDefTheme = $.extend(dt[hname], dt['ui-resizable-handle']), allKnobTheme = $.extend(o.knobTheme[hname], !userKnobClass ? o.knobTheme['ui-resizable-handle'] : {});
				
				// increase zIndex of sw, se, ne, nw axis
				var applyZIndex = /sw|se|ne|nw/.test(handle) ? { zIndex: ++o.zIndex } : {};
				
				var defCss = (loadDefault ? insertionsDefault[handle] : ''), 
					axis = $(['<div class="ui-resizable-handle ', hname, '" style="', defCss, insertionsDefault.handle, '"></div>'].join('')).css( applyZIndex );
				o.handles[handle] = '.ui-resizable-'+handle;
				
				this.element.append(
					//Theme detection, if not loaded, load o.defaultTheme
					axis.css( loadDefault ? allDefTheme : {} )
						// Load the knobHandle css, fix width, height, top, left...
						.css( o.knobHandles ? allKnobTheme : {} ).addClass(o.knobHandles ? 'ui-resizable-knob-handle' : '').addClass(o.knobHandles)
				);
			}
			
			if (o.knobHandles) this.element.addClass('ui-resizable-knob').css( !$.ui.css('ui-resizable-knob') ? { /*border: '1px #fff dashed'*/ } : {} );
		}
		
		this._renderAxis = function(target) {
			target = target || this.element;
			
			for(var i in o.handles) {
				if(o.handles[i].constructor == String) 
					o.handles[i] = $(o.handles[i], this.element).show();
				
				if (o.transparent)
					o.handles[i].css({opacity:0});
				
				//Apply pad to wrapper element, needed to fix axis position (textarea, inputs, scrolls)
				if (this.element.is('.ui-wrapper') && 
					o._nodeName.match(/textarea|input|select|button/i)) {
					
					var axis = $(o.handles[i], this.element), padWrapper = 0;
					
					//Checking the correct pad and border
					padWrapper = /sw|ne|nw|se|n|s/.test(i) ? axis.outerHeight() : axis.outerWidth();
					
					//The padding type i have to apply...
					var padPos = [ 'padding', 
						/ne|nw|n/.test(i) ? 'Top' :
						/se|sw|s/.test(i) ? 'Bottom' : 
						/^e$/.test(i) ? 'Right' : 'Left' ].join(""); 
					
					if (!o.transparent)
						target.css(padPos, padWrapper);
					
					this._proportionallyResize();
				}
				if(!$(o.handles[i]).length) continue;
			}
		};
		
		this._renderAxis(this.element);
		o._handles = $('.ui-resizable-handle', self.element);
		
		if (o.disableSelection)
			o._handles.each(function(i, e) { $.ui.disableSelection(e); });
		
		//Matching axis name
		o._handles.mouseover(function() {
			if (!o.resizing) {
				if (this.className) 
					var axis = this.className.match(/ui-resizable-(se|sw|ne|nw|n|e|s|w)/i);
				//Axis, default = se
				self.axis = o.axis = axis && axis[1] ? axis[1] : 'se';
			}
		});
		
		//If we want to auto hide the elements
		if (o.autoHide) {
			o._handles.hide();
			$(self.element).addClass("ui-resizable-autohide").hover(function() {
				$(this).removeClass("ui-resizable-autohide");
				o._handles.show();
			},
			function(){
				if (!o.resizing) {
					$(this).addClass("ui-resizable-autohide");
					o._handles.hide();
				}
			});
		}
		
		this.mouseInit();
	},
	plugins: {},
	ui: function() {
		return {
			originalElement: this.originalElement,
			element: this.element,
			helper: this.helper,
			position: this.position,
			size: this.size,
			options: this.options,
			originalSize: this.originalSize,
			originalPosition: this.originalPosition
		};
	},
	propagate: function(n,e) {
		$.ui.plugin.call(this, n, [e, this.ui()]);
		if (n != "resize") this.element.triggerHandler(["resize", n].join(""), [e, this.ui()], this.options[n]);
	},
	destroy: function() {
		var el = this.element, wrapped = el.children(".ui-resizable").get(0);
		
		this.mouseDestroy();
		
		var _destroy = function(exp) {
			$(exp).removeClass("ui-resizable ui-resizable-disabled")
				.removeData("resizable").unbind(".resizable").find('.ui-resizable-handle').remove();
		};
		
		_destroy(el);
		
		if (el.is('.ui-wrapper') && wrapped) {
			el.parent().append(
				$(wrapped).css({
					position: el.css('position'),
					width: el.outerWidth(),
					height: el.outerHeight(),
					top: el.css('top'),
					left: el.css('left')
				})
			).end().remove();
			
			_destroy(wrapped);
		}
	},
	mouseStart: function(e) {
		if(this.options.disabled) return false;
		
		var handle = false;
		for(var i in this.options.handles) {
			if($(this.options.handles[i])[0] == e.target) handle = true;
		}
		if (!handle) return false;
		
		var o = this.options, iniPos = this.element.position(), el = this.element, 
			num = function(v) { return parseInt(v, 10) || 0; }, ie6 = $.browser.msie && $.browser.version < 7;
		o.resizing = true;
		o.documentScroll = { top: $(document).scrollTop(), left: $(document).scrollLeft() };
		
		// bugfix #1749
		if (el.is('.ui-draggable') || (/absolute/).test(el.css('position'))) {
			
			// sOffset decides if document scrollOffset will be added to the top/left of the resizable element
			var sOffset = $.browser.msie && !o.containment && (/absolute/).test(el.css('position')) && !(/relative/).test(el.parent().css('position'));
			var dscrollt = sOffset ? o.documentScroll.top : 0, dscrolll = sOffset ? o.documentScroll.left : 0;
			
			el.css({ position: 'absolute', top: (iniPos.top + dscrollt), left: (iniPos.left + dscrolll) });
		}
		
		//Opera fixing relative position
		if ($.browser.opera && /relative/.test(el.css('position')))
			el.css({ position: 'relative', top: 'auto', left: 'auto' });
		
		this._renderProxy();
		
		var curleft = num(this.helper.css('left')), curtop = num(this.helper.css('top'));
		
		//Store needed variables
		this.offset = this.helper.offset();
		this.position = { left: curleft, top: curtop };
		this.size = o.helper || ie6 ? { width: el.outerWidth(), height: el.outerHeight() } : { width: el.width(), height: el.height() };
		this.originalSize = o.helper || ie6 ? { width: el.outerWidth(), height: el.outerHeight() } : { width: el.width(), height: el.height() };
		this.originalPosition = { left: curleft, top: curtop };
		this.sizeDiff = { width: el.outerWidth() - el.width(), height: el.outerHeight() - el.height() };
		this.originalMousePosition = { left: e.pageX, top: e.pageY };
		
		//Aspect Ratio
		o.aspectRatio = (typeof o.aspectRatio == 'number') ? o.aspectRatio : ((this.originalSize.height / this.originalSize.width)||1);
		
		if (o.preserveCursor)
			$('body').css('cursor', this.axis + '-resize');
			
		this.propagate("start", e);
		return true;
	},
	mouseDrag: function(e) {
		
		//Increase performance, avoid regex
		var el = this.helper, o = this.options, props = {},
			self = this, smp = this.originalMousePosition, a = this.axis;
		
		var dx = (e.pageX-smp.left)||0, dy = (e.pageY-smp.top)||0;
		var trigger = this._change[a];
		if (!trigger) return false;
		
		// Calculate the attrs that will be change
		var data = trigger.apply(this, [e, dx, dy]), ie6 = $.browser.msie && $.browser.version < 7, csdif = this.sizeDiff;
		
		if (o._aspectRatio || e.shiftKey)
			data = this._updateRatio(data, e);
		
		data = this._respectSize(data, e);
		
		// plugins callbacks need to be called first
		this.propagate("resize", e);
		
		el.css({
			top: this.position.top + "px", left: this.position.left + "px", 
			width: this.size.width + "px", height: this.size.height + "px"
		});
		
		if (!o.helper && o.proportionallyResize)
			this._proportionallyResize();
		
		this._updateCache(data);
		
		// calling the user callback at the end
		this.element.triggerHandler("resize", [e, this.ui()], this.options["resize"]);
		
		return false;
	},
	mouseStop: function(e) {
		
		this.options.resizing = false;
		var o = this.options, num = function(v) { return parseInt(v, 10) || 0; }, self = this;
		
		if(o.helper) {
			var pr = o.proportionallyResize, ista = pr && (/textarea/i).test(pr.get(0).nodeName), 
						soffseth = ista && $.ui.hasScroll(pr.get(0), 'left') /* TODO - jump height */ ? 0 : self.sizeDiff.height,
							soffsetw = ista ? 0 : self.sizeDiff.width;
			
			var s = { width: (self.size.width - soffsetw), height: (self.size.height - soffseth) },
				left = (parseInt(self.element.css('left'), 10) + (self.position.left - self.originalPosition.left)) || null, 
				top = (parseInt(self.element.css('top'), 10) + (self.position.top - self.originalPosition.top)) || null;
			
			if (!o.animate)
				this.element.css($.extend(s, { top: top, left: left }));
			
			if (o.helper && !o.animate) this._proportionallyResize();
		}
		
		if (o.preserveCursor)
			$('body').css('cursor', 'auto');
		
		this.propagate("stop", e);
		
		if (o.helper) this.helper.remove();
		
		return false;
	},
	_updateCache: function(data) {
		var o = this.options;
		this.offset = this.helper.offset();
		if (data.left) this.position.left = data.left;
		if (data.top) this.position.top = data.top;
		if (data.height) this.size.height = data.height;
		if (data.width) this.size.width = data.width;
	},
	_updateRatio: function(data, e) {
		var o = this.options, cpos = this.position, csize = this.size, a = this.axis;
		
		if (data.height) data.width = (csize.height / o.aspectRatio);
		else if (data.width) data.height = (csize.width * o.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, e) {
		
		var el = this.helper, o = this.options, pRatio = o._aspectRatio || e.shiftKey, a = this.axis, 
				ismaxw = data.width && o.maxWidth && o.maxWidth < data.width, ismaxh = data.height && o.maxHeight && o.maxHeight < data.height,
					isminw = data.width && o.minWidth && o.minWidth > data.width, isminh = data.height && o.minHeight && o.minHeight > data.height;
		
		if (isminw) data.width = o.minWidth;
		if (isminh) data.height = o.minHeight;
		if (ismaxw) data.width = o.maxWidth;
		if (ismaxh) data.height = o.maxHeight;
		
		var dw = this.originalPosition.left + this.originalSize.width, dh = this.position.top + this.size.height;
		var cw = /sw|nw|w/.test(a), ch = /nw|ne|n/.test(a);
		
		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
		var isNotwh = !data.width && !data.height;
		if (isNotwh && !data.left && data.top) data.top = null;
		else if (isNotwh && !data.top && data.left) data.left = null;
		
		return data;
	},
	_proportionallyResize: function() {
		var o = this.options;
		if (!o.proportionallyResize) return;
		var prel = o.proportionallyResize, el = this.helper || this.element;
		
		if (!o.borderDif) {
			var b = [prel.css('borderTopWidth'), prel.css('borderRightWidth'), prel.css('borderBottomWidth'), prel.css('borderLeftWidth')],
				p = [prel.css('paddingTop'), prel.css('paddingRight'), prel.css('paddingBottom'), prel.css('paddingLeft')];
			
			o.borderDif = $.map(b, function(v, i) {
				var border = parseInt(v,10)||0, padding = parseInt(p[i],10)||0;
				return border + padding; 
			});
		}
		prel.css({
			height: (el.height() - o.borderDif[0] - o.borderDif[2]) + "px",
			width: (el.width() - o.borderDif[1] - o.borderDif[3]) + "px"
		});
	},
	_renderProxy: function() {
		var el = this.element, o = this.options;
		this.elementOffset = el.offset();
		
		if(o.helper) {
			this.helper = this.helper || $('<div style="overflow:hidden;"></div>');
			
			// fix ie6 offset
			var ie6 = $.browser.msie && $.browser.version < 7, ie6offset = (ie6 ? 1 : 0),
			pxyoffset = ( ie6 ? 2 : -1 );
			
			this.helper.addClass(o.helper).css({
				width: el.outerWidth() + pxyoffset,
				height: el.outerHeight() + pxyoffset,
				position: 'absolute',
				left: this.elementOffset.left - ie6offset +'px',
				top: this.elementOffset.top - ie6offset +'px',
				zIndex: ++o.zIndex
			});
			
			this.helper.appendTo("body");
			
			if (o.disableSelection)
				$.ui.disableSelection(this.helper.get(0));
			
		} else {
			this.helper = el; 
		}
	},
	_change: {
		e: function(e, dx, dy) {
			return { width: this.originalSize.width + dx };
		},
		w: function(e, dx, dy) {
			var o = this.options, cs = this.originalSize, sp = this.originalPosition;
			return { left: sp.left + dx, width: cs.width - dx };
		},
		n: function(e, dx, dy) {
			var o = this.options, cs = this.originalSize, sp = this.originalPosition;
			return { top: sp.top + dy, height: cs.height - dy };
		},
		s: function(e, dx, dy) {
			return { height: this.originalSize.height + dy };
		},
		se: function(e, dx, dy) {
			return $.extend(this._change.s.apply(this, arguments), this._change.e.apply(this, [e, dx, dy]));
		},
		sw: function(e, dx, dy) {
			return $.extend(this._change.s.apply(this, arguments), this._change.w.apply(this, [e, dx, dy]));
		},
		ne: function(e, dx, dy) {
			return $.extend(this._change.n.apply(this, arguments), this._change.e.apply(this, [e, dx, dy]));
		},
		nw: function(e, dx, dy) {
			return $.extend(this._change.n.apply(this, arguments), this._change.w.apply(this, [e, dx, dy]));
		}
	}
}));

$.extend($.ui.resizable, {
	defaults: {
		cancel: ":input",
		distance: 1,
		delay: 0,
		preventDefault: true,
		transparent: false,
		minWidth: 10,
		minHeight: 10,
		aspectRatio: false,
		disableSelection: true,
		preserveCursor: true,
		autoHide: false,
		knobHandles: false
	}
});

/*
 * Resizable Extensions
 */

$.ui.plugin.add("resizable", "containment", {
	
	start: function(e, ui) {
		var o = ui.options, self = $(this).data("resizable"), el = self.element;
		var oc = o.containment,	ce = (oc instanceof $) ? oc.get(0) : (/parent/.test(oc)) ? el.parent().get(0) : oc;
		if (!ce) return;
		
		self.containerElement = $(ce);
		
		if (/document/.test(oc) || oc == document) {
			self.containerOffset = { left: 0, top: 0 };
			self.containerPosition = { left: 0, top: 0 };
			
			self.parentData = { 
				element: $(document), left: 0, top: 0, 
				width: $(document).width(), height: $(document).height() || document.body.parentNode.scrollHeight
			};
		}
		
				
		// i'm a node, so compute top, left, right, bottom
		else{
			self.containerOffset = $(ce).offset();
			self.containerPosition = $(ce).position();
			self.containerSize = { height: $(ce).innerHeight(), width: $(ce).innerWidth() };
		
			var co = self.containerOffset, ch = self.containerSize.height,	cw = self.containerSize.width, 
						width = ($.ui.hasScroll(ce, "left") ? ce.scrollWidth : cw ), height = ($.ui.hasScroll(ce) ? ce.scrollHeight : ch);
		
			self.parentData = { 
				element: ce, left: co.left, top: co.top, width: width, height: height
			};
		}
	},
	
	resize: function(e, ui) {
		var o = ui.options, self = $(this).data("resizable"), 
				ps = self.containerSize, co = self.containerOffset, cs = self.size, cp = self.position,
				pRatio = o._aspectRatio || e.shiftKey, cop = { top:0, left:0 }, ce = self.containerElement;
		
		if (ce[0] != document && /static/.test(ce.css('position')))
			cop = self.containerPosition;
		
		if (cp.left < (o.helper ? co.left : cop.left)) {
			self.size.width = self.size.width + (o.helper ? (self.position.left - co.left) : (self.position.left - cop.left));
			if (pRatio) self.size.height = self.size.width * o.aspectRatio;
			self.position.left = o.helper ? co.left : cop.left;
		}
		
		if (cp.top < (o.helper ? co.top : 0)) {
			self.size.height = self.size.height + (o.helper ? (self.position.top - co.top) : self.position.top);
			if (pRatio) self.size.width = self.size.height / o.aspectRatio;
			self.position.top = o.helper ? co.top : 0;
		}
		
		var woset = (o.helper ? self.offset.left - co.left : (self.position.left - cop.left)) + self.sizeDiff.width, 
					hoset = (o.helper ? self.offset.top - co.top : self.position.top) + self.sizeDiff.height;
		
		if (woset + self.size.width >= self.parentData.width) {
			self.size.width = self.parentData.width - woset;
			if (pRatio) self.size.height = self.size.width * o.aspectRatio;
		}
		
		if (hoset + self.size.height >= self.parentData.height) {
			self.size.height = self.parentData.height - hoset;
			if (pRatio) self.size.width = self.size.height / o.aspectRatio;
		}
	},
	
	stop: function(e, ui){
		var o = ui.options, self = $(this).data("resizable"), cp = self.position,
				co = self.containerOffset, cop = self.containerPosition, ce = self.containerElement;
		
		var helper = $(self.helper), ho = helper.offset(), w = helper.innerWidth(), h = helper.innerHeight();
		
		
		if (o.helper && !o.animate && /relative/.test(ce.css('position')))
			$(this).css({ left: (ho.left - co.left), top: (ho.top - co.top), width: w, height: h });
		
		if (o.helper && !o.animate && /static/.test(ce.css('position')))
			$(this).css({ left: cop.left + (ho.left - co.left), top: cop.top + (ho.top - co.top), width: w, height: h });
		
	}
});

$.ui.plugin.add("resizable", "grid", {
	
	resize: function(e, ui) {
		var o = ui.options, self = $(this).data("resizable"), cs = self.size, os = self.originalSize, op = self.originalPosition, a = self.axis, ratio = o._aspectRatio || e.shiftKey;
		o.grid = typeof o.grid == "number" ? [o.grid, o.grid] : o.grid;
		var ox = Math.round((cs.width - os.width) / (o.grid[0]||1)) * (o.grid[0]||1), oy = Math.round((cs.height - os.height) / (o.grid[1]||1)) * (o.grid[1]||1);
		
		if (/^(se|s|e)$/.test(a)) {
			self.size.width = os.width + ox;
			self.size.height = os.height + oy;
		}
		else if (/^(ne)$/.test(a)) {
			self.size.width = os.width + ox;
			self.size.height = os.height + oy;
			self.position.top = op.top - oy;
		}
		else if (/^(sw)$/.test(a)) {
			self.size.width = os.width + ox;
			self.size.height = os.height + oy;
			self.position.left = op.left - ox;
		}
		else {
			self.size.width = os.width + ox;
			self.size.height = os.height + oy;
			self.position.top = op.top - oy;
			self.position.left = op.left - ox;
		}
	}
	
});

$.ui.plugin.add("resizable", "animate", {
	
	stop: function(e, ui) {
		var o = ui.options, self = $(this).data("resizable");
		
		var pr = o.proportionallyResize, ista = pr && (/textarea/i).test(pr.get(0).nodeName), 
						soffseth = ista && $.ui.hasScroll(pr.get(0), 'left') /* TODO - jump height */ ? 0 : self.sizeDiff.height,
							soffsetw = ista ? 0 : self.sizeDiff.width;
		
		var style = { width: (self.size.width - soffsetw), height: (self.size.height - soffseth) },
					left = (parseInt(self.element.css('left'), 10) + (self.position.left - self.originalPosition.left)) || null, 
						top = (parseInt(self.element.css('top'), 10) + (self.position.top - self.originalPosition.top)) || null; 
		
		self.element.animate(
			$.extend(style, top && left ? { top: top, left: left } : {}), { 
				duration: o.animateDuration || "slow", easing: o.animateEasing || "swing", 
				step: function() {
					
					var data = {
						width: parseInt(self.element.css('width'), 10),
						height: parseInt(self.element.css('height'), 10),
						top: parseInt(self.element.css('top'), 10),
						left: parseInt(self.element.css('left'), 10)
					};
					
					if (pr) pr.css({ width: data.width, height: data.height });
					
					// propagating resize, and updating values for each animation step
					self._updateCache(data);
					self.propagate("animate", e);
					
				}
			}
		);
	}
	
});

$.ui.plugin.add("resizable", "ghost", {
	
	start: function(e, ui) {
		var o = ui.options, self = $(this).data("resizable"), pr = o.proportionallyResize, cs = self.size;
		
		if (!pr) self.ghost = self.element.clone();
		else self.ghost = pr.clone();
		
		self.ghost.css(
			{ opacity: .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 : '');
		
		self.ghost.appendTo(self.helper);
		
	},
	
	resize: function(e, ui){
		var o = ui.options, self = $(this).data("resizable"), pr = o.proportionallyResize;
		
		if (self.ghost) self.ghost.css({ position: 'relative', height: self.size.height, width: self.size.width });
		
	},
	
	stop: function(e, ui){
		var o = ui.options, self = $(this).data("resizable"), pr = o.proportionallyResize;
		if (self.ghost && self.helper) self.helper.get(0).removeChild(self.ghost.get(0));
	}
	
});

$.ui.plugin.add("resizable", "alsoResize", {
	
	start: function(e, ui) {
		var o = ui.options, self = $(this).data("resizable"), 
		
		_store = function(exp) {
			$(exp).each(function() {
				$(this).data("resizable-alsoresize", {
					width: parseInt($(this).width(), 10), height: parseInt($(this).height(), 10),
					left: parseInt($(this).css('left'), 10), top: parseInt($(this).css('top'), 10)
				});
			});
		};
		
		if (typeof(o.alsoResize) == 'object') {
			if (o.alsoResize.length) { o.alsoResize = o.alsoResize[0];	_store(o.alsoResize); }
			else { $.each(o.alsoResize, function(exp, c) { _store(exp); }); }
		}else{
			_store(o.alsoResize);
		} 
	},
	
	resize: function(e, ui){
		var o = ui.options, self = $(this).data("resizable"), os = self.originalSize, op = self.originalPosition;
		
		var delta = { 
			height: (self.size.height - os.height) || 0, width: (self.size.width - os.width) || 0,
			top: (self.position.top - op.top) || 0, left: (self.position.left - op.left) || 0
		},
		
		_alsoResize = function(exp, c) {
			$(exp).each(function() {
				var start = $(this).data("resizable-alsoresize"), style = {}, css = c && c.length ? c : ['width', 'height', 'top', 'left'];
				
				$.each(css || ['width', 'height', 'top', 'left'], function(i, prop) {
					var sum = (start[prop]||0) + (delta[prop]||0);
					if (sum && sum >= 0)
						style[prop] = sum || null;
				});
				$(this).css(style);
			});
		};
		
		if (typeof(o.alsoResize) == 'object') {
			$.each(o.alsoResize, function(exp, c) { _alsoResize(exp, c); });
		}else{
			_alsoResize(o.alsoResize);
		}
	},
	
	stop: function(e, ui){
		$(this).removeData("resizable-alsoresize-start");
	}
});

})(jQuery);