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Diffstat (limited to 'bower_components/jquery/src/offset.js')
-rw-r--r-- | bower_components/jquery/src/offset.js | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/bower_components/jquery/src/offset.js b/bower_components/jquery/src/offset.js new file mode 100644 index 00000000..dc7bb955 --- /dev/null +++ b/bower_components/jquery/src/offset.js @@ -0,0 +1,204 @@ +define([ + "./core", + "./var/strundefined", + "./core/access", + "./css/var/rnumnonpx", + "./css/curCSS", + "./css/addGetHookIf", + "./css/support", + + "./core/init", + "./css", + "./selector" // contains +], function( jQuery, strundefined, access, rnumnonpx, curCSS, addGetHookIf, support ) { + +var docElem = window.document.documentElement; + +/** + * Gets a window from an element + */ +function getWindow( elem ) { + return jQuery.isWindow( elem ) ? elem : elem.nodeType === 9 && elem.defaultView; +} + +jQuery.offset = { + setOffset: function( elem, options, i ) { + var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition, + position = jQuery.css( elem, "position" ), + curElem = jQuery( elem ), + props = {}; + + // Set position first, in-case top/left are set even on static elem + if ( position === "static" ) { + elem.style.position = "relative"; + } + + curOffset = curElem.offset(); + curCSSTop = jQuery.css( elem, "top" ); + curCSSLeft = jQuery.css( elem, "left" ); + calculatePosition = ( position === "absolute" || position === "fixed" ) && + ( curCSSTop + curCSSLeft ).indexOf("auto") > -1; + + // Need to be able to calculate position if either top or left is auto and position is either absolute or fixed + if ( calculatePosition ) { + curPosition = curElem.position(); + curTop = curPosition.top; + curLeft = curPosition.left; + + } else { + curTop = parseFloat( curCSSTop ) || 0; + curLeft = parseFloat( curCSSLeft ) || 0; + } + + if ( jQuery.isFunction( options ) ) { + options = options.call( elem, i, curOffset ); + } + + if ( options.top != null ) { + props.top = ( options.top - curOffset.top ) + curTop; + } + if ( options.left != null ) { + props.left = ( options.left - curOffset.left ) + curLeft; + } + + if ( "using" in options ) { + options.using.call( elem, props ); + + } else { + curElem.css( props ); + } + } +}; + +jQuery.fn.extend({ + offset: function( options ) { + if ( arguments.length ) { + return options === undefined ? + this : + this.each(function( i ) { + jQuery.offset.setOffset( this, options, i ); + }); + } + + var docElem, win, + elem = this[ 0 ], + box = { top: 0, left: 0 }, + doc = elem && elem.ownerDocument; + + if ( !doc ) { + return; + } + + docElem = doc.documentElement; + + // Make sure it's not a disconnected DOM node + if ( !jQuery.contains( docElem, elem ) ) { + return box; + } + + // If we don't have gBCR, just use 0,0 rather than error + // BlackBerry 5, iOS 3 (original iPhone) + if ( typeof elem.getBoundingClientRect !== strundefined ) { + box = elem.getBoundingClientRect(); + } + win = getWindow( doc ); + return { + top: box.top + win.pageYOffset - docElem.clientTop, + left: box.left + win.pageXOffset - docElem.clientLeft + }; + }, + + position: function() { + if ( !this[ 0 ] ) { + return; + } + + var offsetParent, offset, + elem = this[ 0 ], + parentOffset = { top: 0, left: 0 }; + + // Fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is its only offset parent + if ( jQuery.css( elem, "position" ) === "fixed" ) { + // We assume that getBoundingClientRect is available when computed position is fixed + offset = elem.getBoundingClientRect(); + + } else { + // Get *real* offsetParent + offsetParent = this.offsetParent(); + + // Get correct offsets + offset = this.offset(); + if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) { + parentOffset = offsetParent.offset(); + } + + // Add offsetParent borders + parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ); + parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true ); + } + + // Subtract parent offsets and element margins + return { + top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ), + left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true ) + }; + }, + + offsetParent: function() { + return this.map(function() { + var offsetParent = this.offsetParent || docElem; + + while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) && jQuery.css( offsetParent, "position" ) === "static" ) ) { + offsetParent = offsetParent.offsetParent; + } + + return offsetParent || docElem; + }); + } +}); + +// Create scrollLeft and scrollTop methods +jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) { + var top = "pageYOffset" === prop; + + jQuery.fn[ method ] = function( val ) { + return access( this, function( elem, method, val ) { + var win = getWindow( elem ); + + if ( val === undefined ) { + return win ? win[ prop ] : elem[ method ]; + } + + if ( win ) { + win.scrollTo( + !top ? val : window.pageXOffset, + top ? val : window.pageYOffset + ); + + } else { + elem[ method ] = val; + } + }, method, val, arguments.length, null ); + }; +}); + +// Add the top/left cssHooks using jQuery.fn.position +// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084 +// getComputedStyle returns percent when specified for top/left/bottom/right +// rather than make the css module depend on the offset module, we just check for it here +jQuery.each( [ "top", "left" ], function( i, prop ) { + jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition, + function( elem, computed ) { + if ( computed ) { + computed = curCSS( elem, prop ); + // if curCSS returns percentage, fallback to offset + return rnumnonpx.test( computed ) ? + jQuery( elem ).position()[ prop ] + "px" : + computed; + } + } + ); +}); + +return jQuery; +}); |