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src/css.js
Maintainability
61.12
Lines of code
426
Difficulty
64.49
Estimated Errors
3.09
Function weight
By Complexity
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define( [ "./core", "./var/pnum", "./core/access", "./css/var/rmargin", "./var/document", "./var/rcssNum", "./css/var/rnumnonpx", "./css/var/cssExpand", "./css/var/getStyles", "./css/var/swap", "./css/curCSS", "./css/adjustCSS", "./css/addGetHookIf", "./css/support", "./core/init", "./core/ready", "./selector" // contains ], function( jQuery, pnum, access, rmargin, document, rcssNum, rnumnonpx, cssExpand, getStyles, swap, curCSS, adjustCSS, addGetHookIf, support ) { "use strict"; var // Swappable if display is none or starts with table // except "table", "table-cell", or "table-caption" // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display rdisplayswap = /^(none|table(?!-c[ea]).+)/, cssShow = { position: "absolute", visibility: "hidden", display: "block" }, cssNormalTransform = { letterSpacing: "0", fontWeight: "400" }, cssPrefixes = [ "Webkit", "Moz", "ms" ], emptyStyle = document.createElement( "div" ).style; // Return a css property mapped to a potentially vendor prefixed property function vendorPropName( name ) { // Shortcut for names that are not vendor prefixed if ( name in emptyStyle ) { return name; } // Check for vendor prefixed names var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), i = cssPrefixes.length; while ( i-- ) { name = cssPrefixes[ i ] + capName; if ( name in emptyStyle ) { return name; } } } function setPositiveNumber( elem, value, subtract ) { // Any relative (+/-) values have already been // normalized at this point var matches = rcssNum.exec( value ); return matches ? // Guard against undefined "subtract", e.g., when used as in cssHooks Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : value; } function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) { var i, val = 0; // If we already have the right measurement, avoid augmentation if ( extra === ( isBorderBox ? "border" : "content" ) ) { i = 4; // Otherwise initialize for horizontal or vertical properties } else { i = name === "width" ? 1 : 0; } for ( ; i < 4; i += 2 ) { // Both box models exclude margin, so add it if we want it if ( extra === "margin" ) { val += jQuery.css( elem, extra + cssExpand[ i ], true, styles ); } if ( isBorderBox ) { // border-box includes padding, so remove it if we want content if ( extra === "content" ) { val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); } // At this point, extra isn't border nor margin, so remove border if ( extra !== "margin" ) { val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); } } else { // At this point, extra isn't content, so add padding val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); // At this point, extra isn't content nor padding, so add border if ( extra !== "padding" ) { val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); } } } return val; } function getWidthOrHeight( elem, name, extra ) { // Start with offset property, which is equivalent to the border-box value var val, valueIsBorderBox = true, styles = getStyles( elem ), isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; // Support: IE <=11 only // Running getBoundingClientRect on a disconnected node // in IE throws an error. if ( elem.getClientRects().length ) { val = elem.getBoundingClientRect()[ name ]; } // Some non-html elements return undefined for offsetWidth, so check for null/undefined // svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285 // MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668 if ( val <= 0 || val == null ) { // Fall back to computed then uncomputed css if necessary val = curCSS( elem, name, styles ); if ( val < 0 || val == null ) { val = elem.style[ name ]; } // Computed unit is not pixels. Stop here and return. if ( rnumnonpx.test( val ) ) { return val; } // Check for style in case a browser which returns unreliable values // for getComputedStyle silently falls back to the reliable elem.style valueIsBorderBox = isBorderBox && ( support.boxSizingReliable() || val === elem.style[ name ] ); // Normalize "", auto, and prepare for extra val = parseFloat( val ) || 0; } // Use the active box-sizing model to add/subtract irrelevant styles return ( val + augmentWidthOrHeight( elem, name, extra || ( isBorderBox ? "border" : "content" ), valueIsBorderBox, styles ) ) + "px"; } jQuery.extend( { // Add in style property hooks for overriding the default // behavior of getting and setting a style property cssHooks: { opacity: { get: function( elem, computed ) { if ( computed ) { // We should always get a number back from opacity var ret = curCSS( elem, "opacity" ); return ret === "" ? "1" : ret; } } } }, // Don't automatically add "px" to these possibly-unitless properties cssNumber: { "animationIterationCount": true, "columnCount": true, "fillOpacity": true, "flexGrow": true, "flexShrink": true, "fontWeight": true, "lineHeight": true, "opacity": true, "order": true, "orphans": true, "widows": true, "zIndex": true, "zoom": true }, // Add in properties whose names you wish to fix before // setting or getting the value cssProps: { "float": "cssFloat" }, // Get and set the style property on a DOM Node style: function( elem, name, value, extra ) { // Don't set styles on text and comment nodes if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { return; } // Make sure that we're working with the right name var ret, type, hooks, origName = jQuery.camelCase( name ), style = elem.style; name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName ); // Gets hook for the prefixed version, then unprefixed version hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; // Check if we're setting a value if ( value !== undefined ) { type = typeof value; // Convert "+=" or "-=" to relative numbers (#7345) if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { value = adjustCSS( elem, name, ret ); // Fixes bug #9237 type = "number"; } // Make sure that null and NaN values aren't set (#7116) if ( value == null || value !== value ) { return; } // If a number was passed in, add the unit (except for certain CSS properties) if ( type === "number" ) { value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); } // background-* props affect original clone's values if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { style[ name ] = "inherit"; } // If a hook was provided, use that value, otherwise just set the specified value if ( !hooks || !( "set" in hooks ) || ( value = hooks.set( elem, value, extra ) ) !== undefined ) { style[ name ] = value; } } else { // If a hook was provided get the non-computed value from there if ( hooks && "get" in hooks && ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { return ret; } // Otherwise just get the value from the style object return style[ name ]; } }, css: function( elem, name, extra, styles ) { var val, num, hooks, origName = jQuery.camelCase( name ); // Make sure that we're working with the right name name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName ); // Try prefixed name followed by the unprefixed name hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; // If a hook was provided get the computed value from there if ( hooks && "get" in hooks ) { val = hooks.get( elem, true, extra ); } // Otherwise, if a way to get the computed value exists, use that if ( val === undefined ) { val = curCSS( elem, name, styles ); } // Convert "normal" to computed value if ( val === "normal" && name in cssNormalTransform ) { val = cssNormalTransform[ name ]; } // Make numeric if forced or a qualifier was provided and val looks numeric if ( extra === "" || extra ) { num = parseFloat( val ); return extra === true || isFinite( num ) ? num || 0 : val; } return val; } } ); jQuery.each( [ "height", "width" ], function( i, name ) { jQuery.cssHooks[ name ] = { get: function( elem, computed, extra ) { if ( computed ) { // Certain elements can have dimension info if we invisibly show them // but it must have a current display style that would benefit return rdisplayswap.test( jQuery.css( elem, "display" ) ) && // Support: Safari 8+ // Table columns in Safari have non-zero offsetWidth & zero // getBoundingClientRect().width unless display is changed. // Support: IE <=11 only // Running getBoundingClientRect on a disconnected node // in IE throws an error. ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? swap( elem, cssShow, function() { return getWidthOrHeight( elem, name, extra ); } ) : getWidthOrHeight( elem, name, extra ); } }, set: function( elem, value, extra ) { var matches, styles = extra && getStyles( elem ), subtract = extra && augmentWidthOrHeight( elem, name, extra, jQuery.css( elem, "boxSizing", false, styles ) === "border-box", styles ); // Convert to pixels if value adjustment is needed if ( subtract && ( matches = rcssNum.exec( value ) ) && ( matches[ 3 ] || "px" ) !== "px" ) { elem.style[ name ] = value; value = jQuery.css( elem, name ); } return setPositiveNumber( elem, value, subtract ); } }; } ); jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, function( elem, computed ) { if ( computed ) { return ( parseFloat( curCSS( elem, "marginLeft" ) ) || elem.getBoundingClientRect().left - swap( elem, { marginLeft: 0 }, function() { return elem.getBoundingClientRect().left; } ) ) + "px"; } } ); // These hooks are used by animate to expand properties jQuery.each( { margin: "", padding: "", border: "Width" }, function( prefix, suffix ) { jQuery.cssHooks[ prefix + suffix ] = { expand: function( value ) { var i = 0, expanded = {}, // Assumes a single number if not a string parts = typeof value === "string" ? value.split( " " ) : [ value ]; for ( ; i < 4; i++ ) { expanded[ prefix + cssExpand[ i ] + suffix ] = parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; } return expanded; } }; if ( !rmargin.test( prefix ) ) { jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; } } ); jQuery.fn.extend( { css: function( name, value ) { return access( this, function( elem, name, value ) { var styles, len, map = {}, i = 0; if ( jQuery.isArray( name ) ) { styles = getStyles( elem ); len = name.length; for ( ; i < len; i++ ) { map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); } return map; } return value !== undefined ? jQuery.style( elem, name, value ) : jQuery.css( elem, name ); }, name, value, arguments.length > 1 ); } } ); return jQuery; } );