X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Foffset.js;h=c27dc5a8dcbce3c7bf2bca2e8e89b845566a7109;hb=3d8ceaf2f21f4782ff21746887e2bcf56025e704;hp=6216b69d6cf9e667c2cce72656ec9875b7920e60;hpb=a0d079f430db0c67a2af60bd4e01da02e711d372;p=jquery.git
diff --git a/src/offset.js b/src/offset.js
index 6216b69..c27dc5a 100644
--- a/src/offset.js
+++ b/src/offset.js
@@ -1,19 +1,25 @@
-if ( "getBoundingClientRect" in document.documentElement )
+if ( "getBoundingClientRect" in document.documentElement ) {
jQuery.fn.offset = function() {
var elem = this[0];
- if ( !elem ) 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 ) 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,
@@ -23,50 +29,66 @@ else
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)$/i.test(elem.tagName)) )
- top += parseFloat( computedStyle.borderTopWidth, 10 ) || 0,
- left += parseFloat( computedStyle.borderLeftWidth, 10 ) || 0;
+ top += elem.offsetTop;
+ left += elem.offsetLeft;
+
+ if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.nodeName)) ) {
+ top += parseFloat( computedStyle.borderTopWidth ) || 0;
+ left += parseFloat( computedStyle.borderLeftWidth ) || 0;
+ }
+
prevOffsetParent = offsetParent, offsetParent = elem.offsetParent;
}
- if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" )
- top += parseFloat( computedStyle.borderTopWidth, 10 ) || 0,
- left += parseFloat( computedStyle.borderLeftWidth, 10 ) || 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() {
- var body = document.body, container = document.createElement('div'), innerDiv, checkDiv, table, td, bodyMarginTop = parseFloat( jQuery.curCSS(body, 'marginTop', true), 10 ) || 0,
+ var body = document.body, container = document.createElement('div'), innerDiv, checkDiv, table, td, bodyMarginTop = parseFloat( jQuery.curCSS(body, 'marginTop', true) ) || 0,
html = '';
jQuery.extend( container.style, { position: 'absolute', top: 0, left: 0, margin: 0, border: 0, width: '1px', height: '1px', visibility: 'hidden' } );
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';
- this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15); // safari subtracts parent border width here which is 5px
- checkDiv.style.position = '', checkDiv.style.top = '';
+ // safari subtracts parent border width here which is 5px
+ this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15);
+ checkDiv.style.position = checkDiv.style.top = '';
innerDiv.style.overflow = 'hidden', innerDiv.style.position = 'relative';
this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5);
@@ -75,14 +97,20 @@ jQuery.offset = {
body.removeChild( container );
jQuery.offset.initialize = function(){};
+
+ body = container = innerDiv = checkDiv = table = td = null;
},
bodyOffset: function(body) {
- jQuery.offset.initialize();
var top = body.offsetTop, left = body.offsetLeft;
- if ( jQuery.offset.doesNotIncludeMarginInBodyOffset )
- top += parseFloat( jQuery.curCSS(body, 'marginTop', true), 10 ) || 0,
- left += parseFloat( jQuery.curCSS(body, 'marginLeft', true), 10 ) || 0;
+
+ jQuery.offset.initialize();
+
+ 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 };
}
};
@@ -90,7 +118,7 @@ jQuery.offset = {
jQuery.fn.extend({
position: function() {
- if ( !this[0] ) return null;
+ if ( !this[0] ) { return null; }
var elem = this[0],
@@ -99,17 +127,17 @@ jQuery.fn.extend({
// Get correct offsets
offset = this.offset(),
- parentOffset = /^body|html$/i.test(offsetParent[0].tagName) ? { top: 0, left: 0 } : offsetParent.offset();
+ parentOffset = /^body|html$/i.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset();
// Subtract element margins
// note: when an element has margin: auto the offsetLeft and marginLeft
// are the same in Safari causing offset.left to incorrectly be 0
- offset.top -= parseFloat( jQuery.curCSS(elem, 'marginTop', true), 10 ) || 0;
- offset.left -= parseFloat( jQuery.curCSS(elem, 'marginLeft', true), 10 ) || 0;
+ offset.top -= parseFloat( jQuery.curCSS(elem, 'marginTop', true) ) || 0;
+ offset.left -= parseFloat( jQuery.curCSS(elem, 'marginLeft', true) ) || 0;
// Add offsetParent borders
- parentOffset.top += parseFloat( jQuery.curCSS(offsetParent[0], 'borderTopWidth', true), 10 ) || 0;
- parentOffset.left += parseFloat( jQuery.curCSS(offsetParent[0], 'borderLeftWidth', true), 10 ) || 0;
+ parentOffset.top += parseFloat( jQuery.curCSS(offsetParent[0], 'borderTopWidth', true) ) || 0;
+ parentOffset.left += parseFloat( jQuery.curCSS(offsetParent[0], 'borderLeftWidth', true) ) || 0;
// Subtract the two offsets
return {
@@ -119,10 +147,13 @@ jQuery.fn.extend({
},
offsetParent: function() {
- var offsetParent = this[0].offsetParent || document.body;
- while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && jQuery.css(offsetParent, 'position') === 'static') )
- offsetParent = offsetParent.offsetParent;
- return jQuery( offsetParent );
+ return this.map(function(){
+ var offsetParent = this.offsetParent || document.body;
+ while ( offsetParent && (!/^body|html$/i.test(offsetParent.nodeName) && jQuery.css(offsetParent, 'position') === 'static') ) {
+ offsetParent = offsetParent.offsetParent;
+ }
+ return offsetParent;
+ });
}
});
@@ -132,25 +163,38 @@ jQuery.each( ['Left', 'Top'], function(i, name) {
var method = 'scroll' + name;
jQuery.fn[ method ] = function(val) {
- if ( !this[0] ) return null;
-
- return val !== undefined ?
+ var elem = this[0], win;
+
+ if ( !elem ) { return null; }
+ if ( val !== undefined ) {
// Set the scroll offset
- this.each(function() {
- this == window || this == document ?
- window.scrollTo(
- !i ? val : jQuery(window).scrollLeft(),
- i ? val : jQuery(window).scrollTop()
+ return this.each(function() {
+ win = getWindow( this );
+
+ win ?
+ win.scrollTo(
+ !i ? val : jQuery(win).scrollLeft(),
+ i ? val : jQuery(win).scrollTop()
) :
this[ method ] = val;
- }) :
+ });
+ } else {
+ win = getWindow( elem );
// Return the scroll offset
- this[0] == window || this[0] == document ?
- self[ i ? 'pageYOffset' : 'pageXOffset' ] ||
- jQuery.support.boxModel && document.documentElement[ method ] ||
- document.body[ method ] :
- this[0][ 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;
+}