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Broke more of the property-specific CSS logic out of the jQuery.css() function.

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This commit is contained in:
John Resig 2010-09-05 11:01:27 -04:00
parent 920099b29c
commit b920f0aeb4
1 changed files with 34 additions and 30 deletions
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64
src/css.js
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@ -1,22 +1,18 @@
// exclude the following css properties to add px
var rexclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
ralpha = /alpha\([^)]*\)/,
var ralpha = /alpha\([^)]*\)/,
ropacity = /opacity=([^)]*)/,
rfloat = /float/i,
rdashAlpha = /-([a-z])/ig,
rupper = /([A-Z])/g,
rnumpx = /^-?\d+(?:px)?$/i,
rnum = /^-?\d/,
cssShow = { position: "absolute", visibility: "hidden", display:"block" },
cssShow = { position: "absolute", visibility: "hidden", display: "block" },
cssWidth = [ "Left", "Right" ],
cssHeight = [ "Top", "Bottom" ],
curCSS,
// cache check for defaultView.getComputedStyle
getComputedStyle = document.defaultView && document.defaultView.getComputedStyle,
// normalize float css property
styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat",
fcamelCase = function( all, letter ) {
return letter.toUpperCase();
};
@ -28,7 +24,29 @@ jQuery.fn.css = function( name, value ) {
};
jQuery.extend({
cssHooks: {},
cssHooks: {
opacity: {
get: function( elem ) {
// We should always get a number back from opacity
var ret = curCSS( elem, "opacity", "opacity" );
return ret === "" ? "1" : ret;
}
}
},
// exclude the following css properties to add px
cssNumber: {
"zIndex": true,
"fontWeight": true,
"opacity": true,
"zoom": true,
"lineHeight": true
},
cssProps: {
// normalize float css property
"float": jQuery.support.cssFloat ? "cssFloat" : "styleFloat"
},
css: function( elem, name, value, force, extra ) {
// don't set styles on text and comment nodes
@ -36,17 +54,13 @@ jQuery.extend({
return undefined;
}
// Make sure we're using the right name for getting the float value
if ( rfloat.test( name ) ) {
name = styleFloat;
}
var ret, origName = name.replace( rdashAlpha, fcamelCase ),
style = elem.style || {}, hooks = jQuery.cssHooks[ origName ] || {};
name = name.replace( rdashAlpha, fcamelCase );
var ret, style = elem.style || {}, hooks = jQuery.cssHooks[name] || {};
name = jQuery.cssProps[ origName ] || origName;
if ( value !== undefined ) {
if ( typeof value === "number" && !rexclude.test(name) ) {
if ( typeof value === "number" && !jQuery.cssNumber[ origName ] ) {
value += "px";
}
@ -63,7 +77,7 @@ jQuery.extend({
ret = style[ name ];
} else if ( curCSS ) {
ret = curCSS( elem, name );
ret = curCSS( elem, name, origName );
}
return ret;
@ -104,7 +118,7 @@ jQuery.each(["height", "width"], function( i, name ) {
set: function( elem, value ) {
// ignore negative width and height values #1599
elem.style[ name ] = Math.max( parseFloat(value), 0 );
elem.style[ name ] = Math.max( parseFloat(value), 0 ) + "px";
}
};
});
@ -140,29 +154,19 @@ if ( !jQuery.support.opacity ) {
}
if ( getComputedStyle ) {
curCSS = function( elem, name ) {
curCSS = function( elem, newName, name ) {
var ret, defaultView, computedStyle;
// Only "float" is needed here
if ( rfloat.test( name ) ) {
name = "float";
}
name = name.replace( rupper, "-$1" ).toLowerCase();
if ( !(defaultView = elem.ownerDocument.defaultView) ) {
return null;
return undefined;
}
if ( (computedStyle = defaultView.getComputedStyle( elem, null )) ) {
ret = computedStyle.getPropertyValue( name );
}
// We should always get a number back from opacity
if ( name === "opacity" && ret === "" ) {
ret = "1";
}
return ret;
};