root / drupal7 / sites / all / libraries / flexslider-2.5.0 / bower_components / jquery / src / offset.js @ 0aee3c58
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define([ |
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"./core",
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"./var/strundefined",
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"./core/access",
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"./css/var/rnumnonpx",
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"./css/curCSS",
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"./css/addGetHookIf",
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"./css/support",
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"./core/init",
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"./css",
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"./selector" // contains |
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], function( jQuery, strundefined, access, rnumnonpx, curCSS, addGetHookIf, support ) {
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// BuildExclude
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curCSS = curCSS.curCSS; |
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var docElem = window.document.documentElement;
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/**
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* Gets a window from an element
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*/
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function getWindow( elem ) { |
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return jQuery.isWindow( elem ) ?
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elem : |
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elem.nodeType === 9 ?
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elem.defaultView || elem.parentWindow : |
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false;
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} |
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jQuery.offset = {
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setOffset: function( elem, options, i ) { |
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var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
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position = jQuery.css( elem, "position" ),
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curElem = jQuery( elem ), |
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props = {};
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// set position first, in-case top/left are set even on static elem
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if ( position === "static" ) { |
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elem.style.position = "relative";
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} |
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curOffset = curElem.offset(); |
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curCSSTop = jQuery.css( elem, "top" );
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curCSSLeft = jQuery.css( elem, "left" );
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calculatePosition = ( position === "absolute" || position === "fixed" ) && |
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jQuery.inArray("auto", [ curCSSTop, curCSSLeft ] ) > -1; |
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// need to be able to calculate position if either top or left is auto and position is either absolute or fixed
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if ( calculatePosition ) {
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curPosition = curElem.position(); |
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curTop = curPosition.top; |
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curLeft = curPosition.left; |
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} else {
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curTop = parseFloat( curCSSTop ) || 0;
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curLeft = parseFloat( curCSSLeft ) || 0;
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} |
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if ( jQuery.isFunction( options ) ) {
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options = options.call( elem, i, curOffset ); |
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} |
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if ( options.top != null ) { |
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props.top = ( options.top - curOffset.top ) + curTop; |
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} |
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if ( options.left != null ) { |
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props.left = ( options.left - curOffset.left ) + curLeft; |
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} |
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if ( "using" in options ) { |
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options.using.call( elem, props ); |
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} else {
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curElem.css( props ); |
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} |
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} |
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}; |
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jQuery.fn.extend({
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offset: function( options ) { |
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if ( arguments.length ) { |
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return options === undefined ? |
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this :
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this.each(function( i ) { |
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jQuery.offset.setOffset( this, options, i );
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}); |
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} |
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var docElem, win,
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box = { top: 0, left: 0 },
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elem = this[ 0 ], |
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doc = elem && elem.ownerDocument; |
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if ( !doc ) {
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return;
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} |
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docElem = doc.documentElement; |
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// Make sure it's not a disconnected DOM node
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if ( !jQuery.contains( docElem, elem ) ) {
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return box;
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} |
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// If we don't have gBCR, just use 0,0 rather than error
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// BlackBerry 5, iOS 3 (original iPhone)
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if ( typeof elem.getBoundingClientRect !== strundefined ) { |
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box = elem.getBoundingClientRect(); |
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} |
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win = getWindow( doc ); |
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return {
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top: box.top + ( win.pageYOffset || docElem.scrollTop ) - ( docElem.clientTop || 0 ), |
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left: box.left + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 ) |
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}; |
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}, |
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position: function() { |
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if ( !this[ 0 ] ) { |
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return;
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} |
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var offsetParent, offset,
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parentOffset = { top: 0, left: 0 },
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elem = this[ 0 ]; |
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// fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is its only offset parent
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if ( jQuery.css( elem, "position" ) === "fixed" ) { |
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// we assume that getBoundingClientRect is available when computed position is fixed
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offset = elem.getBoundingClientRect(); |
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} else {
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// Get *real* offsetParent
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offsetParent = this.offsetParent();
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// Get correct offsets
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offset = this.offset();
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if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) { |
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parentOffset = offsetParent.offset(); |
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} |
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// Add offsetParent borders
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parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ); |
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parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true ); |
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} |
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// Subtract parent offsets and element margins
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// note: when an element has margin: auto the offsetLeft and marginLeft
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// are the same in Safari causing offset.left to incorrectly be 0
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return {
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top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ), |
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left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true) |
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}; |
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}, |
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offsetParent: function() { |
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return this.map(function() { |
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var offsetParent = this.offsetParent || docElem; |
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while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) && jQuery.css( offsetParent, "position" ) === "static" ) ) { |
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offsetParent = offsetParent.offsetParent; |
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} |
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return offsetParent || docElem;
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}); |
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} |
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}); |
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// Create scrollLeft and scrollTop methods
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jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
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var top = /Y/.test( prop ); |
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jQuery.fn[ method ] = function( val ) {
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return access( this, function( elem, method, val ) { |
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var win = getWindow( elem );
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if ( val === undefined ) { |
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return win ? (prop in win) ? win[ prop ] : |
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win.document.documentElement[ method ] : |
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elem[ method ]; |
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} |
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if ( win ) {
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win.scrollTo( |
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!top ? val : jQuery( win ).scrollLeft(), |
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top ? val : jQuery( win ).scrollTop() |
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); |
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} else {
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elem[ method ] = val; |
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} |
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}, method, val, arguments.length, null ); |
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}; |
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}); |
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// Add the top/left cssHooks using jQuery.fn.position
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// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
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// getComputedStyle returns percent when specified for top/left/bottom/right
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// rather than make the css module depend on the offset module, we just check for it here
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jQuery.each( [ "top", "left" ], function( i, prop ) { |
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jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition, |
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function( elem, computed ) {
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if ( computed ) {
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computed = curCSS( elem, prop ); |
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// if curCSS returns percentage, fallback to offset
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return rnumnonpx.test( computed ) ?
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jQuery( elem ).position()[ prop ] + "px" :
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computed; |
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} |
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} |
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); |
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}); |
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return jQuery;
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}); |