add scrollTop/Left tests and fix for IE

diff --git a/src/offset.js b/src/offset.js
index 3f616ba..d15a0d5 100644 (file)
--- a/src/offset.js
+++ b/src/offset.js
@@ -1,25 +1,19 @@
-if ( "getBoundingClientRect" in document.documentElement ) {
+if ( "getBoundingClientRect" in document.documentElement )
        jQuery.fn.offset = function() {
                var elem = this[0];
-               if ( !elem || !elem.ownerDocument ) { return null; }
-               if ( elem === elem.ownerDocument.body ) {
-                       return jQuery.offset.bodyOffset( elem );
-               }
-
+               if ( !elem || !elem.ownerDocument ) return null;
+               if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem );
                var box = elem.getBoundingClientRect(), doc = elem.ownerDocument, body = doc.body, docElem = doc.documentElement,
                        clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0,
                        top  = box.top  + (self.pageYOffset || jQuery.support.boxModel && docElem.scrollTop  || body.scrollTop ) - clientTop,
                        left = box.left + (self.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft) - clientLeft;
                return { top: top, left: left };
        };
-} else {
+else
        jQuery.fn.offset = function() {
                var elem = this[0];
-               if ( !elem || !elem.ownerDocument ) { return null; }
-               if ( elem === elem.ownerDocument.body ) {
-                       return jQuery.offset.bodyOffset( elem );
-               }
-
+               if ( !elem || !elem.ownerDocument ) return null;
+               if ( elem === elem.ownerDocument.body ) return jQuery.offset.bodyOffset( elem );
                jQuery.offset.initialize();
 
                var offsetParent = elem.offsetParent, prevOffsetParent = elem,
@@ -29,45 +23,32 @@ if ( "getBoundingClientRect" in document.documentElement ) {
                        top = elem.offsetTop, left = elem.offsetLeft;
 
                while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) {
-                       if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) { break; }
-
+                       if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) break;
                        computedStyle = defaultView.getComputedStyle(elem, null);
-                       top -= elem.scrollTop;
-                       left -= elem.scrollLeft;
-
+                       top -= elem.scrollTop, left -= elem.scrollLeft;
                        if ( elem === offsetParent ) {
-                               top += elem.offsetTop;
-                               left += elem.offsetLeft;
-
-                               if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.nodeName)) ) {
-                                       top  += parseFloat( computedStyle.borderTopWidth  ) || 0;
+                               top += elem.offsetTop, left += elem.offsetLeft;
+                               if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.tagName)) )
+                                       top  += parseFloat( computedStyle.borderTopWidth  ) || 0,
                                        left += parseFloat( computedStyle.borderLeftWidth ) || 0;
-                               }
-
                                prevOffsetParent = offsetParent, offsetParent = elem.offsetParent;
                        }
-
-                       if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) {
-                               top  += parseFloat( computedStyle.borderTopWidth  ) || 0;
+                       if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" )
+                               top  += parseFloat( computedStyle.borderTopWidth  ) || 0,
                                left += parseFloat( computedStyle.borderLeftWidth ) || 0;
-                       }
-
                        prevComputedStyle = computedStyle;
                }
 
-               if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" ) {
-                       top  += body.offsetTop;
+               if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" )
+                       top  += body.offsetTop,
                        left += body.offsetLeft;
-               }
 
-               if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) {
-                       top  += Math.max( docElem.scrollTop, body.scrollTop );
+               if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" )
+                       top  += Math.max( docElem.scrollTop, body.scrollTop ),
                        left += Math.max( docElem.scrollLeft, body.scrollLeft );
-               }
 
                return { top: top, left: left };
        };
-}
 
 jQuery.offset = {
        initialize: function() {
@@ -78,17 +59,14 @@ jQuery.offset = {
 
                container.innerHTML = html;
                body.insertBefore( container, body.firstChild );
-               innerDiv = container.firstChild;
-               checkDiv = innerDiv.firstChild;
-               td = innerDiv.nextSibling.firstChild.firstChild;
+               innerDiv = container.firstChild, checkDiv = innerDiv.firstChild, td = innerDiv.nextSibling.firstChild.firstChild;
 
                this.doesNotAddBorder = (checkDiv.offsetTop !== 5);
                this.doesAddBorderForTableAndCells = (td.offsetTop === 5);
 
                checkDiv.style.position = 'fixed', checkDiv.style.top = '20px';
-               // safari subtracts parent border width here which is 5px
-               this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15);
-               checkDiv.style.position = checkDiv.style.top = '';
+               this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15); // safari subtracts parent border width here which is 5px
+               checkDiv.style.position = '', checkDiv.style.top = '';
 
                innerDiv.style.overflow = 'hidden', innerDiv.style.position = 'relative';
                this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5);
@@ -102,15 +80,11 @@ jQuery.offset = {
        },
 
        bodyOffset: function(body) {
-               var top = body.offsetTop, left = body.offsetLeft;
-
                jQuery.offset.initialize();
-
-               if ( jQuery.offset.doesNotIncludeMarginInBodyOffset ) {
-                       top  += parseFloat( jQuery.curCSS(body, 'marginTop',  true) ) || 0;
+               var top = body.offsetTop, left = body.offsetLeft;
+               if ( jQuery.offset.doesNotIncludeMarginInBodyOffset )
+                       top  += parseFloat( jQuery.curCSS(body, 'marginTop',  true) ) || 0,
                        left += parseFloat( jQuery.curCSS(body, 'marginLeft', true) ) || 0;
-               }
-
                return { top: top, left: left };
        }
 };
@@ -118,7 +92,7 @@ jQuery.offset = {
 
 jQuery.fn.extend({
        position: function() {
-               if ( !this[0] ) { return null; }
+               if ( !this[0] ) return null;
 
                var elem = this[0],
 
@@ -127,7 +101,7 @@ jQuery.fn.extend({
 
                // Get correct offsets
                offset       = this.offset(),
-               parentOffset = /^body|html$/i.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset();
+               parentOffset = /^body|html$/i.test(offsetParent[0].tagName) ? { top: 0, left: 0 } : offsetParent.offset();
 
                // Subtract element margins
                // note: when an element has margin: auto the offsetLeft and marginLeft
@@ -147,13 +121,10 @@ jQuery.fn.extend({
        },
 
        offsetParent: function() {
-               return this.map(function(){
-                       var offsetParent = this.offsetParent || document.body;
-                       while ( offsetParent && (!/^body|html$/i.test(offsetParent.nodeName) && jQuery.css(offsetParent, 'position') === 'static') ) {
-                               offsetParent = offsetParent.offsetParent;
-                       }
-                       return offsetParent;
-               });
+               var offsetParent = this[0].offsetParent || document.body;
+               while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && jQuery.css(offsetParent, 'position') === 'static') )
+                       offsetParent = offsetParent.offsetParent;
+               return jQuery( offsetParent );
        }
 });
 
@@ -163,40 +134,36 @@ jQuery.each( ['Left', 'Top'], function(i, name) {
        var method = 'scroll' + name;
 
        jQuery.fn[ method ] = function(val) {
-               if ( !this[0] ) { return null; }
+               var elem = this[0], win;
+               
+               if ( !elem ) return null;
 
                if ( val !== undefined ) {
                        // Set the scroll offset
                        return this.each(function() {
                                win = getWindow( this );
 
-                               if ( win ) {
+                               win ?
                                        win.scrollTo(
                                                !i ? val : jQuery(win).scrollLeft(),
                                                 i ? val : jQuery(win).scrollTop()
-                                       );
-                               } else {
+                                       ) :
                                        this[ method ] = val;
-                               }
                        });
                } else {
-                       var elem = this[0],
-                               win  = getWindow( elem );
+                       win = getWindow( elem );
 
                        // Return the scroll offset
-                       return win && 'pageXOffset' in win ?
-                               win[ i ? 'pageYOffset' : 'pageXOffset' ] ||
-                                       jQuery.support.boxModel && win.document.documentElement[ method ] ||
+                       return win ? ('pageXOffset' in win) ? win[ i ? 'pageYOffset' : 'pageXOffset' ] :
+                               jQuery.support.boxModel && win.document.documentElement[ method ] ||
                                        win.document.body[ method ] :
                                elem[ method ];
                }
        };
-
-       function getWindow( elem ) {
-               return ("scrollTo" in elem && elem.document) ?
-                       elem :
-                       elem.nodeType === 9 ?
-                               elem.defaultView || elem.parentWindow :
-                               false;
-       }
 });
+
+function getWindow( elem ) {
+       return ("scrollTo" in elem && elem.document) ? elem :
+               (elem.nodeName === "#document") ? elem.defaultView || elem.parentWindow :
+                       false;
+}

diff --git a/test/unit/offset.js b/test/unit/offset.js
index f9747de..61dd93a 100644 (file)
--- a/test/unit/offset.js
+++ b/test/unit/offset.js
@@ -128,7 +128,7 @@ testoffset("table", function( jQuery ) {
        // equals( jQuery('#td-3').offset().left, 222, "jQuery('#td-3').offset().left" );
 });
 
-testoffset("scroll", function( jQuery ) {
+testoffset("scroll", function( jQuery, win ) {
        var ie = jQuery.browser.msie && parseInt( jQuery.browser.version ) < 8;
        
        // IE is collapsing the top margin of 1px
@@ -138,6 +138,25 @@ testoffset("scroll", function( jQuery ) {
        // IE is collapsing the top margin of 1px
        equals( jQuery('#scroll-1-1').offset().top, ie ? 9 : 11, "jQuery('#scroll-1-1').offset().top" );
        equals( jQuery('#scroll-1-1').offset().left, 11, "jQuery('#scroll-1-1').offset().left" );
+       
+       
+       // scroll offset tests .scrollTop/Left
+       equals( jQuery('#scroll-1').scrollTop(), 5, "jQuery('#scroll-1').scrollTop()" );
+       equals( jQuery('#scroll-1').scrollLeft(), 5, "jQuery('#scroll-1').scrollLeft()" );
+       
+       equals( jQuery('#scroll-1-1').scrollTop(), 0, "jQuery('#scroll-1-1').scrollTop()" );
+       equals( jQuery('#scroll-1-1').scrollLeft(), 0, "jQuery('#scroll-1-1').scrollLeft()" );
+       
+       // equals( jQuery('body').scrollTop(), 0, "jQuery('body').scrollTop()" );
+       // equals( jQuery('body').scrollLeft(), 0, "jQuery('body').scrollTop()" );
+       
+       win.name = "test";
+       
+       equals( jQuery(win).scrollTop(), 1000, "jQuery(window).scrollTop()" );
+       equals( jQuery(win).scrollLeft(), 1000, "jQuery(window).scrollLeft()" );
+       
+       equals( jQuery(win.document).scrollTop(), 1000, "jQuery(document).scrollTop()" );
+       equals( jQuery(win.document).scrollLeft(), 1000, "jQuery(document).scrollLeft()" );
 });
 
 testoffset("body", function( jQuery ) {
@@ -187,7 +206,7 @@ function testoffset(name, fn) {
                                        // continue
                                        start();
                                        // call actual tests passing the correct jQuery isntance to use
-                                       fn.call( this, win.jQuery );
+                                       fn.call( this, win.jQuery, win );
                                        document.body.removeChild( iframe );
                                        iframe = null;
                                }