css.js
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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/isHidden",
"./css/var/getStyles",
"./css/var/swap",
"./css/curCSS",
"./css/adjustCSS",
"./css/defaultDisplay",
"./css/addGetHookIf",
"./css/support",
"./data/var/dataPriv",
"./core/init",
"./core/ready",
"./selector" // contains
], function( jQuery, pnum, access, rmargin, document, rcssNum, rnumnonpx, cssExpand, isHidden,
getStyles, swap, curCSS, adjustCSS, defaultDisplay, addGetHookIf, support, dataPriv ) {
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", "O", "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 = extra === ( isBorderBox ? "border" : "content" ) ?
// If we already have the right measurement, avoid augmentation
4 :
// Otherwise initialize for horizontal or vertical properties
name === "width" ? 1 : 0,
val = 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 valueIsBorderBox = true,
val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
styles = getStyles( elem ),
isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
// 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";
}
function showHide( elements, show ) {
var display, elem, hidden,
values = [],
index = 0,
length = elements.length;
for ( ; index < length; index++ ) {
elem = elements[ index ];
if ( !elem.style ) {
continue;
}
values[ index ] = dataPriv.get( elem, "olddisplay" );
display = elem.style.display;
if ( show ) {
// Reset the inline display of this element to learn if it is
// being hidden by cascaded rules or not
if ( !values[ index ] && display === "none" ) {
elem.style.display = "";
}
// Set elements which have been overridden with display: none
// in a stylesheet to whatever the default browser style is
// for such an element
if ( elem.style.display === "" && isHidden( elem ) ) {
values[ index ] = dataPriv.access(
elem,
"olddisplay",
defaultDisplay( elem.nodeName )
);
}
} else {
hidden = isHidden( elem );
if ( display !== "none" || !hidden ) {
dataPriv.set(
elem,
"olddisplay",
hidden ? display : jQuery.css( elem, "display" )
);
}
}
}
// Set the display of most of the elements in a second loop
// to avoid the constant reflow
for ( index = 0; index < length; index++ ) {
elem = elements[ index ];
if ( !elem.style ) {
continue;
}
if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
elem.style.display = show ? values[ index ] || "" : "none";
}
}
return elements;
}
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" );
}
// Support: IE9-11+
// 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" ) ) &&
elem.offsetWidth === 0 ?
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";
}
}
);
// Support: Android 2.3
jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
function( elem, computed ) {
if ( computed ) {
return swap( elem, { "display": "inline-block" },
curCSS, [ elem, "marginRight" ] );
}
}
);
// 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 );
},
show: function() {
return showHide( this, true );
},
hide: function() {
return showHide( this );
},
toggle: function( state ) {
if ( typeof state === "boolean" ) {
return state ? this.show() : this.hide();
}
return this.each( function() {
if ( isHidden( this ) ) {
jQuery( this ).show();
} else {
jQuery( this ).hide();
}
} );
}
} );
return jQuery;
} );