Added in support for .offset(Function).

[jquery.git] / src / offset.js

diff --git a/src/offset.js b/src/offset.js
index d12921d..7dd7134 100644 (file)
--- a/src/offset.js
+++ b/src/offset.js
@@ -7,8 +7,8 @@ if ( "getBoundingClientRect" in document.documentElement ) {
                }
 
                if ( options ) { 
-                       return this.each(function() {
-                               jQuery.offset.setOffset( this, options );
+                       return this.each(function( i ) {
+                               jQuery.offset.setOffset( this, i, options );
                        });
                }
 
@@ -33,8 +33,8 @@ if ( "getBoundingClientRect" in document.documentElement ) {
                }
 
                if ( options ) { 
-                       return this.each(function() {
-                               jQuery.offset.setOffset( this, options );
+                       return this.each(function( i ) {
+                               jQuery.offset.setOffset( this, i, options );
                        });
                }
 
@@ -137,7 +137,7 @@ jQuery.offset = {
                return { top: top, left: left };
        },
        
-       setOffset: function( elem, options ) {
+       setOffset: function( elem, i, options ) {
                // set position first, in-case top/left are set even on static elem
                if ( /static/.test( jQuery.curCSS( elem, "position" ) ) ) {
                        elem.style.position = "relative";
@@ -145,11 +145,16 @@ jQuery.offset = {
                var curElem   = jQuery( elem ),
                        curOffset = curElem.offset(),
                        curTop    = parseInt( jQuery.curCSS( elem, "top",  true ), 10 ) || 0,
-                       curLeft   = parseInt( jQuery.curCSS( elem, "left", true ), 10)  || 0,
-                       props     = {
-                               top:  (options.top  - curOffset.top)  + curTop,
-                               left: (options.left - curOffset.left) + curLeft
-                       };
+                       curLeft   = parseInt( jQuery.curCSS( elem, "left", true ), 10 ) || 0;
+
+               if ( jQuery.isFunction( options ) ) {
+                       options = options.call( elem, i, curOffset );
+               }
+
+               var props = {
+                       top:  (options.top  - curOffset.top)  + curTop,
+                       left: (options.left - curOffset.left) + curLeft
+               };
                
                if ( "using" in options ) {
                        options.using.call( elem, props );