Upgrade jQuery UI from 1.8.24 to 1.9.2

jQuery UI 1.10 has already been released, and 1.11 is on the
horizon (1.9 is marked "legacy" as of writing). 1.10 drops the
compatibility layer for 1.8 API. So, users should definitely be
encouraged to upgrade their code to move away from the deprecated
1.8 APIs. However, to take it one step at a time, this commit
upgrades us to 1.9 first. That way we're at least not using an
unsupported code base anymore, while at the same time not rolling
out breaking changes.

jQuery UI has redesigned many of its APIs[1], but compatibility
with the jQuery UI 1.8 API is maintained throughout 1.9.x.

* Base theme is now called "Smoothness".

* Sorting the entries in Resources.php alphabetically to make it
  easier to ensure all files are listed when comparing them
  side-by-side.

* Update dependencies to match the "Depends:" header inside
  the javascript files.

* In jQuery UI 1.9, effect files were renamed to match the
  jquery.ui.*.js naming pattern.

* New modules:
  - jquery.ui.menu
  - jquery.ui.spinner
  - jquery.ui.tooltip

* Release notes:
  - http://blog.jqueryui.com/2012/10/jquery-ui-1-9-0/
    - http://jqueryui.com/upgrade-guide/1.9/
    - http://jqueryui.com/changelog/1.9.0/
  - http://blog.jqueryui.com/2012/10/jquery-ui-1-9-1/
    - http://jqueryui.com/changelog/1.9.1/
  - http://blog.jqueryui.com/2012/11/jquery-ui-1-9-2/

[1] http://blog.jqueryui.com/2011/03/api-redesigns-the-past-present-and-future/

Bug: 47076
Change-Id: I0e10b42fb7c25b9d4704719f21c44c08f36ddfa7

1 files changed, 367 insertions, 158 deletions

diff --git a/resources/lib/jquery.ui/jquery.ui.position.js b/resources/lib/jquery.ui/jquery.ui.position.js
index 8b20179b1b30..be99013ef6c6 100644
--- a/resources/lib/jquery.ui/jquery.ui.position.js
+++ b/resources/lib/jquery.ui/jquery.ui.position.js
@@ -1,22 +1,87 @@
 /*!
- * jQuery UI Position 1.8.24
+ * jQuery UI Position 1.9.2
+ * http://jqueryui.com
  *
- * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
- * Dual licensed under the MIT or GPL Version 2 licenses.
+ * Copyright 2012 jQuery Foundation and other contributors
+ * Released under the MIT license.
  * http://jquery.org/license
  *
- * http://docs.jquery.com/UI/Position
+ * http://api.jqueryui.com/position/
  */
 (function( $, undefined ) {
 
 $.ui = $.ui || {};
 
-var horizontalPositions = /left|center|right/,
-	verticalPositions = /top|center|bottom/,
-	center = "center",
-	support = {},
-	_position = $.fn.position,
-	_offset = $.fn.offset;
+var cachedScrollbarWidth,
+	max = Math.max,
+	abs = Math.abs,
+	round = Math.round,
+	rhorizontal = /left|center|right/,
+	rvertical = /top|center|bottom/,
+	roffset = /[\+\-]\d+%?/,
+	rposition = /^\w+/,
+	rpercent = /%$/,
+	_position = $.fn.position;
+
+function getOffsets( offsets, width, height ) {
+	return [
+		parseInt( offsets[ 0 ], 10 ) * ( rpercent.test( offsets[ 0 ] ) ? width / 100 : 1 ),
+		parseInt( offsets[ 1 ], 10 ) * ( rpercent.test( offsets[ 1 ] ) ? height / 100 : 1 )
+	];
+}
+function parseCss( element, property ) {
+	return parseInt( $.css( element, property ), 10 ) || 0;
+}
+
+$.position = {
+	scrollbarWidth: function() {
+		if ( cachedScrollbarWidth !== undefined ) {
+			return cachedScrollbarWidth;
+		}
+		var w1, w2,
+			div = $( "<div style='display:block;width:50px;height:50px;overflow:hidden;'><div style='height:100px;width:auto;'></div></div>" ),
+			innerDiv = div.children()[0];
+
+		$( "body" ).append( div );
+		w1 = innerDiv.offsetWidth;
+		div.css( "overflow", "scroll" );
+
+		w2 = innerDiv.offsetWidth;
+
+		if ( w1 === w2 ) {
+			w2 = div[0].clientWidth;
+		}
+
+		div.remove();
+
+		return (cachedScrollbarWidth = w1 - w2);
+	},
+	getScrollInfo: function( within ) {
+		var overflowX = within.isWindow ? "" : within.element.css( "overflow-x" ),
+			overflowY = within.isWindow ? "" : within.element.css( "overflow-y" ),
+			hasOverflowX = overflowX === "scroll" ||
+				( overflowX === "auto" && within.width < within.element[0].scrollWidth ),
+			hasOverflowY = overflowY === "scroll" ||
+				( overflowY === "auto" && within.height < within.element[0].scrollHeight );
+		return {
+			width: hasOverflowX ? $.position.scrollbarWidth() : 0,
+			height: hasOverflowY ? $.position.scrollbarWidth() : 0
+		};
+	},
+	getWithinInfo: function( element ) {
+		var withinElement = $( element || window ),
+			isWindow = $.isWindow( withinElement[0] );
+		return {
+			element: withinElement,
+			isWindow: isWindow,
+			offset: withinElement.offset() || { left: 0, top: 0 },
+			scrollLeft: withinElement.scrollLeft(),
+			scrollTop: withinElement.scrollTop(),
+			width: isWindow ? withinElement.width() : withinElement.outerWidth(),
+			height: isWindow ? withinElement.height() : withinElement.outerHeight()
+		};
+	}
+};
 
 $.fn.position = function( options ) {
 	if ( !options || !options.of ) {
@@ -26,48 +91,65 @@ $.fn.position = function( options ) {
 	// make a copy, we don't want to modify arguments
 	options = $.extend( {}, options );
 
-	var target = $( options.of ),
+	var atOffset, targetWidth, targetHeight, targetOffset, basePosition,
+		target = $( options.of ),
+		within = $.position.getWithinInfo( options.within ),
+		scrollInfo = $.position.getScrollInfo( within ),
 		targetElem = target[0],
 		collision = ( options.collision || "flip" ).split( " " ),
-		offset = options.offset ? options.offset.split( " " ) : [ 0, 0 ],
-		targetWidth,
-		targetHeight,
-		basePosition;
+		offsets = {};
 
 	if ( targetElem.nodeType === 9 ) {
 		targetWidth = target.width();
 		targetHeight = target.height();
-		basePosition = { top: 0, left: 0 };
-	// TODO: use $.isWindow() in 1.9
-	} else if ( targetElem.setTimeout ) {
+		targetOffset = { top: 0, left: 0 };
+	} else if ( $.isWindow( targetElem ) ) {
 		targetWidth = target.width();
 		targetHeight = target.height();
-		basePosition = { top: target.scrollTop(), left: target.scrollLeft() };
+		targetOffset = { top: target.scrollTop(), left: target.scrollLeft() };
 	} else if ( targetElem.preventDefault ) {
 		// force left top to allow flipping
 		options.at = "left top";
 		targetWidth = targetHeight = 0;
-		basePosition = { top: options.of.pageY, left: options.of.pageX };
+		targetOffset = { top: targetElem.pageY, left: targetElem.pageX };
 	} else {
 		targetWidth = target.outerWidth();
 		targetHeight = target.outerHeight();
-		basePosition = target.offset();
+		targetOffset = target.offset();
 	}
+	// clone to reuse original targetOffset later
+	basePosition = $.extend( {}, targetOffset );
 
-	// force my and at to have valid horizontal and veritcal positions
-	// if a value is missing or invalid, it will be converted to center 
+	// force my and at to have valid horizontal and vertical positions
+	// if a value is missing or invalid, it will be converted to center
 	$.each( [ "my", "at" ], function() {
-		var pos = ( options[this] || "" ).split( " " );
+		var pos = ( options[ this ] || "" ).split( " " ),
+			horizontalOffset,
+			verticalOffset;
+
 		if ( pos.length === 1) {
-			pos = horizontalPositions.test( pos[0] ) ?
-				pos.concat( [center] ) :
-				verticalPositions.test( pos[0] ) ?
-					[ center ].concat( pos ) :
-					[ center, center ];
+			pos = rhorizontal.test( pos[ 0 ] ) ?
+				pos.concat( [ "center" ] ) :
+				rvertical.test( pos[ 0 ] ) ?
+					[ "center" ].concat( pos ) :
+					[ "center", "center" ];
 		}
-		pos[ 0 ] = horizontalPositions.test( pos[0] ) ? pos[ 0 ] : center;
-		pos[ 1 ] = verticalPositions.test( pos[1] ) ? pos[ 1 ] : center;
-		options[ this ] = pos;
+		pos[ 0 ] = rhorizontal.test( pos[ 0 ] ) ? pos[ 0 ] : "center";
+		pos[ 1 ] = rvertical.test( pos[ 1 ] ) ? pos[ 1 ] : "center";
+
+		// calculate offsets
+		horizontalOffset = roffset.exec( pos[ 0 ] );
+		verticalOffset = roffset.exec( pos[ 1 ] );
+		offsets[ this ] = [
+			horizontalOffset ? horizontalOffset[ 0 ] : 0,
+			verticalOffset ? verticalOffset[ 0 ] : 0
+		];
+
+		// reduce to just the positions without the offsets
+		options[ this ] = [
+			rposition.exec( pos[ 0 ] )[ 0 ],
+			rposition.exec( pos[ 1 ] )[ 0 ]
+		];
 	});
 
 	// normalize collision option
@@ -75,67 +157,63 @@ $.fn.position = function( options ) {
 		collision[ 1 ] = collision[ 0 ];
 	}
 
-	// normalize offset option
-	offset[ 0 ] = parseInt( offset[0], 10 ) || 0;
-	if ( offset.length === 1 ) {
-		offset[ 1 ] = offset[ 0 ];
-	}
-	offset[ 1 ] = parseInt( offset[1], 10 ) || 0;
-
-	if ( options.at[0] === "right" ) {
+	if ( options.at[ 0 ] === "right" ) {
 		basePosition.left += targetWidth;
-	} else if ( options.at[0] === center ) {
+	} else if ( options.at[ 0 ] === "center" ) {
 		basePosition.left += targetWidth / 2;
 	}
 
-	if ( options.at[1] === "bottom" ) {
+	if ( options.at[ 1 ] === "bottom" ) {
 		basePosition.top += targetHeight;
-	} else if ( options.at[1] === center ) {
+	} else if ( options.at[ 1 ] === "center" ) {
 		basePosition.top += targetHeight / 2;
 	}
 
-	basePosition.left += offset[ 0 ];
-	basePosition.top += offset[ 1 ];
+	atOffset = getOffsets( offsets.at, targetWidth, targetHeight );
+	basePosition.left += atOffset[ 0 ];
+	basePosition.top += atOffset[ 1 ];
 
 	return this.each(function() {
-		var elem = $( this ),
+		var collisionPosition, using,
+			elem = $( this ),
 			elemWidth = elem.outerWidth(),
 			elemHeight = elem.outerHeight(),
-			marginLeft = parseInt( $.curCSS( this, "marginLeft", true ) ) || 0,
-			marginTop = parseInt( $.curCSS( this, "marginTop", true ) ) || 0,
-			collisionWidth = elemWidth + marginLeft +
-				( parseInt( $.curCSS( this, "marginRight", true ) ) || 0 ),
-			collisionHeight = elemHeight + marginTop +
-				( parseInt( $.curCSS( this, "marginBottom", true ) ) || 0 ),
+			marginLeft = parseCss( this, "marginLeft" ),
+			marginTop = parseCss( this, "marginTop" ),
+			collisionWidth = elemWidth + marginLeft + parseCss( this, "marginRight" ) + scrollInfo.width,
+			collisionHeight = elemHeight + marginTop + parseCss( this, "marginBottom" ) + scrollInfo.height,
 			position = $.extend( {}, basePosition ),
-			collisionPosition;
+			myOffset = getOffsets( offsets.my, elem.outerWidth(), elem.outerHeight() );
 
-		if ( options.my[0] === "right" ) {
+		if ( options.my[ 0 ] === "right" ) {
 			position.left -= elemWidth;
-		} else if ( options.my[0] === center ) {
+		} else if ( options.my[ 0 ] === "center" ) {
 			position.left -= elemWidth / 2;
 		}
 
-		if ( options.my[1] === "bottom" ) {
+		if ( options.my[ 1 ] === "bottom" ) {
 			position.top -= elemHeight;
-		} else if ( options.my[1] === center ) {
+		} else if ( options.my[ 1 ] === "center" ) {
 			position.top -= elemHeight / 2;
 		}
 
-		// prevent fractions if jQuery version doesn't support them (see #5280)
-		if ( !support.fractions ) {
-			position.left = Math.round( position.left );
-			position.top = Math.round( position.top );
+		position.left += myOffset[ 0 ];
+		position.top += myOffset[ 1 ];
+
+		// if the browser doesn't support fractions, then round for consistent results
+		if ( !$.support.offsetFractions ) {
+			position.left = round( position.left );
+			position.top = round( position.top );
 		}
 
 		collisionPosition = {
-			left: position.left - marginLeft,
-			top: position.top - marginTop
+			marginLeft: marginLeft,
+			marginTop: marginTop
 		};
 
 		$.each( [ "left", "top" ], function( i, dir ) {
-			if ( $.ui.position[ collision[i] ] ) {
-				$.ui.position[ collision[i] ][ dir ]( position, {
+			if ( $.ui.position[ collision[ i ] ] ) {
+				$.ui.position[ collision[ i ] ][ dir ]( position, {
 					targetWidth: targetWidth,
 					targetHeight: targetHeight,
 					elemWidth: elemWidth,
@@ -143,9 +221,11 @@ $.fn.position = function( options ) {
 					collisionPosition: collisionPosition,
 					collisionWidth: collisionWidth,
 					collisionHeight: collisionHeight,
-					offset: offset,
+					offset: [ atOffset[ 0 ] + myOffset[ 0 ], atOffset [ 1 ] + myOffset[ 1 ] ],
 					my: options.my,
-					at: options.at
+					at: options.at,
+					within: within,
+					elem : elem
 				});
 			}
 		});
@@ -153,31 +233,137 @@ $.fn.position = function( options ) {
 		if ( $.fn.bgiframe ) {
 			elem.bgiframe();
 		}
-		elem.offset( $.extend( position, { using: options.using } ) );
+
+		if ( options.using ) {
+			// adds feedback as second argument to using callback, if present
+			using = function( props ) {
+				var left = targetOffset.left - position.left,
+					right = left + targetWidth - elemWidth,
+					top = targetOffset.top - position.top,
+					bottom = top + targetHeight - elemHeight,
+					feedback = {
+						target: {
+							element: target,
+							left: targetOffset.left,
+							top: targetOffset.top,
+							width: targetWidth,
+							height: targetHeight
+						},
+						element: {
+							element: elem,
+							left: position.left,
+							top: position.top,
+							width: elemWidth,
+							height: elemHeight
+						},
+						horizontal: right < 0 ? "left" : left > 0 ? "right" : "center",
+						vertical: bottom < 0 ? "top" : top > 0 ? "bottom" : "middle"
+					};
+				if ( targetWidth < elemWidth && abs( left + right ) < targetWidth ) {
+					feedback.horizontal = "center";
+				}
+				if ( targetHeight < elemHeight && abs( top + bottom ) < targetHeight ) {
+					feedback.vertical = "middle";
+				}
+				if ( max( abs( left ), abs( right ) ) > max( abs( top ), abs( bottom ) ) ) {
+					feedback.important = "horizontal";
+				} else {
+					feedback.important = "vertical";
+				}
+				options.using.call( this, props, feedback );
+			};
+		}
+
+		elem.offset( $.extend( position, { using: using } ) );
 	});
 };
 
 $.ui.position = {
 	fit: {
 		left: function( position, data ) {
-			var win = $( window ),
-				over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft();
-			position.left = over > 0 ? position.left - over : Math.max( position.left - data.collisionPosition.left, position.left );
+			var within = data.within,
+				withinOffset = within.isWindow ? within.scrollLeft : within.offset.left,
+				outerWidth = within.width,
+				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
+				overLeft = withinOffset - collisionPosLeft,
+				overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
+				newOverRight;
+
+			// element is wider than within
+			if ( data.collisionWidth > outerWidth ) {
+				// element is initially over the left side of within
+				if ( overLeft > 0 && overRight <= 0 ) {
+					newOverRight = position.left + overLeft + data.collisionWidth - outerWidth - withinOffset;
+					position.left += overLeft - newOverRight;
+				// element is initially over right side of within
+				} else if ( overRight > 0 && overLeft <= 0 ) {
+					position.left = withinOffset;
+				// element is initially over both left and right sides of within
+				} else {
+					if ( overLeft > overRight ) {
+						position.left = withinOffset + outerWidth - data.collisionWidth;
+					} else {
+						position.left = withinOffset;
+					}
+				}
+			// too far left -> align with left edge
+			} else if ( overLeft > 0 ) {
+				position.left += overLeft;
+			// too far right -> align with right edge
+			} else if ( overRight > 0 ) {
+				position.left -= overRight;
+			// adjust based on position and margin
+			} else {
+				position.left = max( position.left - collisionPosLeft, position.left );
+			}
 		},
 		top: function( position, data ) {
-			var win = $( window ),
-				over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop();
-			position.top = over > 0 ? position.top - over : Math.max( position.top - data.collisionPosition.top, position.top );
+			var within = data.within,
+				withinOffset = within.isWindow ? within.scrollTop : within.offset.top,
+				outerHeight = data.within.height,
+				collisionPosTop = position.top - data.collisionPosition.marginTop,
+				overTop = withinOffset - collisionPosTop,
+				overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
+				newOverBottom;
+
+			// element is taller than within
+			if ( data.collisionHeight > outerHeight ) {
+				// element is initially over the top of within
+				if ( overTop > 0 && overBottom <= 0 ) {
+					newOverBottom = position.top + overTop + data.collisionHeight - outerHeight - withinOffset;
+					position.top += overTop - newOverBottom;
+				// element is initially over bottom of within
+				} else if ( overBottom > 0 && overTop <= 0 ) {
+					position.top = withinOffset;
+				// element is initially over both top and bottom of within
+				} else {
+					if ( overTop > overBottom ) {
+						position.top = withinOffset + outerHeight - data.collisionHeight;
+					} else {
+						position.top = withinOffset;
+					}
+				}
+			// too far up -> align with top
+			} else if ( overTop > 0 ) {
+				position.top += overTop;
+			// too far down -> align with bottom edge
+			} else if ( overBottom > 0 ) {
+				position.top -= overBottom;
+			// adjust based on position and margin
+			} else {
+				position.top = max( position.top - collisionPosTop, position.top );
+			}
 		}
 	},
-
 	flip: {
 		left: function( position, data ) {
-			if ( data.at[0] === center ) {
-				return;
-			}
-			var win = $( window ),
-				over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(),
+			var within = data.within,
+				withinOffset = within.offset.left + within.scrollLeft,
+				outerWidth = within.width,
+				offsetLeft = within.isWindow ? within.scrollLeft : within.offset.left,
+				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
+				overLeft = collisionPosLeft - offsetLeft,
+				overRight = collisionPosLeft + data.collisionWidth - outerWidth - offsetLeft,
 				myOffset = data.my[ 0 ] === "left" ?
 					-data.elemWidth :
 					data.my[ 0 ] === "right" ?
@@ -185,88 +371,79 @@ $.ui.position = {
 						0,
 				atOffset = data.at[ 0 ] === "left" ?
 					data.targetWidth :
-					-data.targetWidth,
-				offset = -2 * data.offset[ 0 ];
-			position.left += data.collisionPosition.left < 0 ?
-				myOffset + atOffset + offset :
-				over > 0 ?
-					myOffset + atOffset + offset :
-					0;
+					data.at[ 0 ] === "right" ?
+						-data.targetWidth :
+						0,
+				offset = -2 * data.offset[ 0 ],
+				newOverRight,
+				newOverLeft;
+
+			if ( overLeft < 0 ) {
+				newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth - outerWidth - withinOffset;
+				if ( newOverRight < 0 || newOverRight < abs( overLeft ) ) {
+					position.left += myOffset + atOffset + offset;
+				}
+			}
+			else if ( overRight > 0 ) {
+				newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset + atOffset + offset - offsetLeft;
+				if ( newOverLeft > 0 || abs( newOverLeft ) < overRight ) {
+					position.left += myOffset + atOffset + offset;
+				}
+			}
 		},
 		top: function( position, data ) {
-			if ( data.at[1] === center ) {
-				return;
-			}
-			var win = $( window ),
-				over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(),
-				myOffset = data.my[ 1 ] === "top" ?
+			var within = data.within,
+				withinOffset = within.offset.top + within.scrollTop,
+				outerHeight = within.height,
+				offsetTop = within.isWindow ? within.scrollTop : within.offset.top,
+				collisionPosTop = position.top - data.collisionPosition.marginTop,
+				overTop = collisionPosTop - offsetTop,
+				overBottom = collisionPosTop + data.collisionHeight - outerHeight - offsetTop,
+				top = data.my[ 1 ] === "top",
+				myOffset = top ?
 					-data.elemHeight :
 					data.my[ 1 ] === "bottom" ?
 						data.elemHeight :
 						0,
 				atOffset = data.at[ 1 ] === "top" ?
 					data.targetHeight :
-					-data.targetHeight,
-				offset = -2 * data.offset[ 1 ];
-			position.top += data.collisionPosition.top < 0 ?
-				myOffset + atOffset + offset :
-				over > 0 ?
-					myOffset + atOffset + offset :
-					0;
+					data.at[ 1 ] === "bottom" ?
+						-data.targetHeight :
+						0,
+				offset = -2 * data.offset[ 1 ],
+				newOverTop,
+				newOverBottom;
+			if ( overTop < 0 ) {
+				newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight - outerHeight - withinOffset;
+				if ( ( position.top + myOffset + atOffset + offset) > overTop && ( newOverBottom < 0 || newOverBottom < abs( overTop ) ) ) {
+					position.top += myOffset + atOffset + offset;
+				}
+			}
+			else if ( overBottom > 0 ) {
+				newOverTop = position.top -  data.collisionPosition.marginTop + myOffset + atOffset + offset - offsetTop;
+				if ( ( position.top + myOffset + atOffset + offset) > overBottom && ( newOverTop > 0 || abs( newOverTop ) < overBottom ) ) {
+					position.top += myOffset + atOffset + offset;
+				}
+			}
+		}
+	},
+	flipfit: {
+		left: function() {
+			$.ui.position.flip.left.apply( this, arguments );
+			$.ui.position.fit.left.apply( this, arguments );
+		},
+		top: function() {
+			$.ui.position.flip.top.apply( this, arguments );
+			$.ui.position.fit.top.apply( this, arguments );
 		}
 	}
 };
 
-// offset setter from jQuery 1.4
-if ( !$.offset.setOffset ) {
-	$.offset.setOffset = function( elem, options ) {
-		// set position first, in-case top/left are set even on static elem
-		if ( /static/.test( $.curCSS( elem, "position" ) ) ) {
-			elem.style.position = "relative";
-		}
-		var curElem   = $( elem ),
-			curOffset = curElem.offset(),
-			curTop    = parseInt( $.curCSS( elem, "top",  true ), 10 ) || 0,
-			curLeft   = parseInt( $.curCSS( elem, "left", true ), 10)  || 0,
-			props     = {
-				top:  (options.top  - curOffset.top)  + curTop,
-				left: (options.left - curOffset.left) + curLeft
-			};
-		
-		if ( 'using' in options ) {
-			options.using.call( elem, props );
-		} else {
-			curElem.css( props );
-		}
-	};
-
-	$.fn.offset = function( options ) {
-		var elem = this[ 0 ];
-		if ( !elem || !elem.ownerDocument ) { return null; }
-		if ( options ) {
-			if ( $.isFunction( options ) ) {
-				return this.each(function( i ) {
-					$( this ).offset( options.call( this, i, $( this ).offset() ) );
-				});
-			}
-			return this.each(function() {
-				$.offset.setOffset( this, options );
-			});
-		}
-		return _offset.call( this );
-	};
-}
-
-// jQuery <1.4.3 uses curCSS, in 1.4.3 - 1.7.2 curCSS = css, 1.8+ only has css
-if ( !$.curCSS ) {
-	$.curCSS = $.css;
-}
-
-// fraction support test (older versions of jQuery don't support fractions)
+// fraction support test
 (function () {
-	var body = document.getElementsByTagName( "body" )[ 0 ], 
-		div = document.createElement( "div" ),
-		testElement, testElementParent, testElementStyle, offset, offsetTotal;
+	var testElement, testElementParent, testElementStyle, offsetLeft, i,
+		body = document.getElementsByTagName( "body" )[ 0 ],
+		div = document.createElement( "div" );
 
 	//Create a "fake body" for testing based on method used in jQuery.support
 	testElement = document.createElement( body ? "div" : "body" );
@@ -285,24 +462,56 @@ if ( !$.curCSS ) {
 			top: "-1000px"
 		});
 	}
-	for ( var i in testElementStyle ) {
+	for ( i in testElementStyle ) {
 		testElement.style[ i ] = testElementStyle[ i ];
 	}
 	testElement.appendChild( div );
 	testElementParent = body || document.documentElement;
 	testElementParent.insertBefore( testElement, testElementParent.firstChild );
 
-	div.style.cssText = "position: absolute; left: 10.7432222px; top: 10.432325px; height: 30px; width: 201px;";
+	div.style.cssText = "position: absolute; left: 10.7432222px;";
 
-	offset = $( div ).offset( function( _, offset ) {
-		return offset;
-	}).offset();
+	offsetLeft = $( div ).offset().left;
+	$.support.offsetFractions = offsetLeft > 10 && offsetLeft < 11;
 
 	testElement.innerHTML = "";
 	testElementParent.removeChild( testElement );
-
-	offsetTotal = offset.top + offset.left + ( body ? 2000 : 0 );
-	support.fractions = offsetTotal > 21 && offsetTotal < 22;
 })();
 
-}( jQuery ));
+// DEPRECATED
+if ( $.uiBackCompat !== false ) {
+	// offset option
+	(function( $ ) {
+		var _position = $.fn.position;
+		$.fn.position = function( options ) {
+			if ( !options || !options.offset ) {
+				return _position.call( this, options );
+			}
+			var offset = options.offset.split( " " ),
+				at = options.at.split( " " );
+			if ( offset.length === 1 ) {
+				offset[ 1 ] = offset[ 0 ];
+			}
+			if ( /^\d/.test( offset[ 0 ] ) ) {
+				offset[ 0 ] = "+" + offset[ 0 ];
+			}
+			if ( /^\d/.test( offset[ 1 ] ) ) {
+				offset[ 1 ] = "+" + offset[ 1 ];
+			}
+			if ( at.length === 1 ) {
+				if ( /left|center|right/.test( at[ 0 ] ) ) {
+					at[ 1 ] = "center";
+				} else {
+					at[ 1 ] = at[ 0 ];
+					at[ 0 ] = "center";
+				}
+			}
+			return _position.call( this, $.extend( options, {
+				at: at[ 0 ] + offset[ 0 ] + " " + at[ 1 ] + offset[ 1 ],
+				offset: undefined
+			} ) );
+		};
+	}( jQuery ) );
+}
+
+}( jQuery ) );