|
|
/*
|
|
|
Copyright (c) 2010, Yahoo! Inc. All rights reserved.
|
|
|
Code licensed under the BSD License:
|
|
|
http://developer.yahoo.com/yui/license.html
|
|
|
version: 2.8.2r1
|
|
|
*/
|
|
|
/**
|
|
|
* The StyleSheet component is a utility for managing css rules at the
|
|
|
* stylesheet level
|
|
|
*
|
|
|
* @module stylesheet
|
|
|
* @namespace YAHOO.util
|
|
|
* @requires yahoo
|
|
|
* @beta
|
|
|
*/
|
|
|
(function () {
|
|
|
|
|
|
var d = document,
|
|
|
p = d.createElement('p'), // Have to hold the node (see notes)
|
|
|
workerStyle = p.style, // worker style collection
|
|
|
lang = YAHOO.lang,
|
|
|
selectors = {},
|
|
|
sheets = {},
|
|
|
ssId = 0,
|
|
|
floatAttr = ('cssFloat' in workerStyle) ? 'cssFloat' : 'styleFloat',
|
|
|
_toCssText,
|
|
|
_unsetOpacity,
|
|
|
_unsetProperty;
|
|
|
|
|
|
/*
|
|
|
* Normalizes the removal of an assigned style for opacity. IE uses the filter property.
|
|
|
*/
|
|
|
_unsetOpacity = ('opacity' in workerStyle) ?
|
|
|
function (style) { style.opacity = ''; } :
|
|
|
function (style) { style.filter = ''; };
|
|
|
|
|
|
/*
|
|
|
* Normalizes the removal of an assigned style for a given property. Expands
|
|
|
* shortcut properties if necessary and handles the various names for the float property.
|
|
|
*/
|
|
|
workerStyle.border = "1px solid red";
|
|
|
workerStyle.border = ''; // IE doesn't unset child properties
|
|
|
_unsetProperty = workerStyle.borderLeft ?
|
|
|
function (style,prop) {
|
|
|
var p;
|
|
|
if (prop !== floatAttr && prop.toLowerCase().indexOf('float') != -1) {
|
|
|
prop = floatAttr;
|
|
|
}
|
|
|
if (typeof style[prop] === 'string') {
|
|
|
switch (prop) {
|
|
|
case 'opacity':
|
|
|
case 'filter' : _unsetOpacity(style); break;
|
|
|
case 'font' :
|
|
|
style.font = style.fontStyle = style.fontVariant =
|
|
|
style.fontWeight = style.fontSize = style.lineHeight =
|
|
|
style.fontFamily = '';
|
|
|
break;
|
|
|
default :
|
|
|
for (p in style) {
|
|
|
if (p.indexOf(prop) === 0) {
|
|
|
style[p] = '';
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
} :
|
|
|
function (style,prop) {
|
|
|
if (prop !== floatAttr && prop.toLowerCase().indexOf('float') != -1) {
|
|
|
prop = floatAttr;
|
|
|
}
|
|
|
if (lang.isString(style[prop])) {
|
|
|
if (prop === 'opacity') {
|
|
|
_unsetOpacity(style);
|
|
|
} else {
|
|
|
style[prop] = '';
|
|
|
}
|
|
|
}
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* Create an instance of YAHOO.util.StyleSheet to encapsulate a css stylesheet.
|
|
|
* The constructor can be called using function or constructor syntax.
|
|
|
* <pre><code>var sheet = YAHOO.util.StyleSheet(..);</pre></code>
|
|
|
* or
|
|
|
* <pre><code>var sheet = new YAHOO.util.StyleSheet(..);</pre></code>
|
|
|
*
|
|
|
* The first parameter passed can be any of the following things:
|
|
|
* <ul>
|
|
|
* <li>The desired string name to register a new empty sheet</li>
|
|
|
* <li>The string name of an existing YAHOO.util.StyleSheet instance</li>
|
|
|
* <li>The unique yuiSSID generated for an existing YAHOO.util.StyleSheet instance</li>
|
|
|
* <li>The id of an existing <code><link></code> or <code><style></code> node</li>
|
|
|
* <li>The node reference for an existing <code><link></code> or <code><style></code> node</li>
|
|
|
* <li>A chunk of css text to create a new stylesheet from</li>
|
|
|
* </ul>
|
|
|
*
|
|
|
* <p>If a string is passed, StyleSheet will first look in its static name
|
|
|
* registry for an existing sheet, then in the DOM for an element with that id.
|
|
|
* If neither are found and the string contains the { character, it will be
|
|
|
* used as a the initial cssText for a new StyleSheet. Otherwise, a new empty
|
|
|
* StyleSheet is created, assigned the string value as a name, and registered
|
|
|
* statically by that name.</p>
|
|
|
*
|
|
|
* <p>The optional second parameter is a string name to register the sheet as.
|
|
|
* This param is largely useful when providing a node id/ref or chunk of css
|
|
|
* text to create a populated instance.</p>
|
|
|
*
|
|
|
* @class StyleSheet
|
|
|
* @constructor
|
|
|
* @param seed {String|HTMLElement} a style or link node, its id, or a name or
|
|
|
* yuiSSID of a StyleSheet, or a string of css text (see above)
|
|
|
* @param name {String} OPTIONAL name to register instance for future static
|
|
|
* access
|
|
|
*/
|
|
|
function StyleSheet(seed, name) {
|
|
|
var head,
|
|
|
node,
|
|
|
sheet,
|
|
|
cssRules = {},
|
|
|
_rules,
|
|
|
_insertRule,
|
|
|
_deleteRule,
|
|
|
i,r,sel;
|
|
|
|
|
|
// Factory or constructor
|
|
|
if (!(this instanceof StyleSheet)) {
|
|
|
return new StyleSheet(seed,name);
|
|
|
}
|
|
|
|
|
|
// capture the DOM node if the string is an id
|
|
|
node = seed && (seed.nodeName ? seed : d.getElementById(seed));
|
|
|
|
|
|
// Check for the StyleSheet in the static registry
|
|
|
if (seed && sheets[seed]) {
|
|
|
return sheets[seed];
|
|
|
} else if (node && node.yuiSSID && sheets[node.yuiSSID]) {
|
|
|
return sheets[node.yuiSSID];
|
|
|
}
|
|
|
|
|
|
// Create a style node if necessary
|
|
|
if (!node || !/^(?:style|link)$/i.test(node.nodeName)) {
|
|
|
node = d.createElement('style');
|
|
|
node.type = 'text/css';
|
|
|
}
|
|
|
|
|
|
if (lang.isString(seed)) {
|
|
|
// Create entire sheet from seed cssText
|
|
|
if (seed.indexOf('{') != -1) {
|
|
|
// Not a load-time fork because low run-time impact and IE fails
|
|
|
// test for s.styleSheet at page load time (oddly)
|
|
|
if (node.styleSheet) {
|
|
|
node.styleSheet.cssText = seed;
|
|
|
} else {
|
|
|
node.appendChild(d.createTextNode(seed));
|
|
|
}
|
|
|
} else if (!name) {
|
|
|
name = seed;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (!node.parentNode || node.parentNode.nodeName.toLowerCase() !== 'head') {
|
|
|
head = (node.ownerDocument || d).getElementsByTagName('head')[0];
|
|
|
// styleSheet isn't available on the style node in FF2 until appended
|
|
|
// to the head element. style nodes appended to body do not affect
|
|
|
// change in Safari.
|
|
|
head.appendChild(node);
|
|
|
}
|
|
|
|
|
|
// Begin setting up private aliases to the important moving parts
|
|
|
// 1. The stylesheet object
|
|
|
// IE stores StyleSheet under the "styleSheet" property
|
|
|
// Safari doesn't populate sheet for xdomain link elements
|
|
|
sheet = node.sheet || node.styleSheet;
|
|
|
|
|
|
// 2. The style rules collection
|
|
|
// IE stores the rules collection under the "rules" property
|
|
|
_rules = sheet && ('cssRules' in sheet) ? 'cssRules' : 'rules';
|
|
|
|
|
|
// 3. The method to remove a rule from the stylesheet
|
|
|
// IE supports removeRule
|
|
|
_deleteRule = ('deleteRule' in sheet) ?
|
|
|
function (i) { sheet.deleteRule(i); } :
|
|
|
function (i) { sheet.removeRule(i); };
|
|
|
|
|
|
// 4. The method to add a new rule to the stylesheet
|
|
|
// IE supports addRule with different signature
|
|
|
_insertRule = ('insertRule' in sheet) ?
|
|
|
function (sel,css,i) { sheet.insertRule(sel+' {'+css+'}',i); } :
|
|
|
function (sel,css,i) { sheet.addRule(sel,css,i); };
|
|
|
|
|
|
// 5. Initialize the cssRules map from the node
|
|
|
// xdomain link nodes forbid access to the cssRules collection, so this
|
|
|
// will throw an error.
|
|
|
// TODO: research alternate stylesheet, @media
|
|
|
for (i = sheet[_rules].length - 1; i >= 0; --i) {
|
|
|
r = sheet[_rules][i];
|
|
|
sel = r.selectorText;
|
|
|
|
|
|
if (cssRules[sel]) {
|
|
|
cssRules[sel].style.cssText += ';' + r.style.cssText;
|
|
|
_deleteRule(i);
|
|
|
} else {
|
|
|
cssRules[sel] = r;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Cache the instance by the generated Id
|
|
|
node.yuiSSID = 'yui-stylesheet-' + (ssId++);
|
|
|
StyleSheet.register(node.yuiSSID,this);
|
|
|
|
|
|
// Register the instance by name if provided or defaulted from seed
|
|
|
if (name) {
|
|
|
StyleSheet.register(name,this);
|
|
|
}
|
|
|
|
|
|
// Public API
|
|
|
lang.augmentObject(this,{
|
|
|
/**
|
|
|
* Get the unique yuiSSID for this StyleSheet instance
|
|
|
*
|
|
|
* @method getId
|
|
|
* @return {Number} the static id
|
|
|
*/
|
|
|
getId : function () { return node.yuiSSID; },
|
|
|
|
|
|
/**
|
|
|
* The HTMLElement that this instance encapsulates
|
|
|
*
|
|
|
* @property node
|
|
|
* @type HTMLElement
|
|
|
*/
|
|
|
node : node,
|
|
|
|
|
|
/**
|
|
|
* Enable all the rules in the sheet
|
|
|
*
|
|
|
* @method enable
|
|
|
* @return {StyleSheet} the instance
|
|
|
* @chainable
|
|
|
*/
|
|
|
// Enabling/disabling the stylesheet. Changes may be made to rules
|
|
|
// while disabled.
|
|
|
enable : function () { sheet.disabled = false; return this; },
|
|
|
|
|
|
/**
|
|
|
* Disable all the rules in the sheet. Rules may be changed while the
|
|
|
* StyleSheet is disabled.
|
|
|
*
|
|
|
* @method disable
|
|
|
* @return {StyleSheet} the instance
|
|
|
* @chainable
|
|
|
*/
|
|
|
disable : function () { sheet.disabled = true; return this; },
|
|
|
|
|
|
/**
|
|
|
* Returns boolean indicating whether the StyleSheet is enabled
|
|
|
*
|
|
|
* @method isEnabled
|
|
|
* @return {Boolean} is it enabled?
|
|
|
*/
|
|
|
isEnabled : function () { return !sheet.disabled; },
|
|
|
|
|
|
/**
|
|
|
* <p>Set style properties for a provided selector string.
|
|
|
* If the selector includes commas, it will be split into individual
|
|
|
* selectors and applied accordingly. If the selector string does not
|
|
|
* have a corresponding rule in the sheet, it will be added.</p>
|
|
|
*
|
|
|
* <p>The second parameter can be either a string of CSS text,
|
|
|
* formatted as CSS ("font-size: 10px;"), or an object collection of
|
|
|
* properties and their new values. Object properties must be in
|
|
|
* JavaScript format ({ fontSize: "10px" }).</p>
|
|
|
*
|
|
|
* <p>The float style property will be set by any of "float",
|
|
|
* "styleFloat", or "cssFloat" if passed in the
|
|
|
* object map. Use "float: left;" format when passing a CSS text
|
|
|
* string.</p>
|
|
|
*
|
|
|
* @method set
|
|
|
* @param sel {String} the selector string to apply the changes to
|
|
|
* @param css {Object|String} Object literal of style properties and
|
|
|
* new values, or a string of cssText
|
|
|
* @return {StyleSheet} the StyleSheet instance
|
|
|
* @chainable
|
|
|
*/
|
|
|
set : function (sel,css) {
|
|
|
var rule = cssRules[sel],
|
|
|
multi = sel.split(/\s*,\s*/),i,
|
|
|
idx;
|
|
|
|
|
|
// IE's addRule doesn't support multiple comma delimited selectors
|
|
|
if (multi.length > 1) {
|
|
|
for (i = multi.length - 1; i >= 0; --i) {
|
|
|
this.set(multi[i], css);
|
|
|
}
|
|
|
return this;
|
|
|
}
|
|
|
|
|
|
// Some selector values can cause IE to hang
|
|
|
if (!StyleSheet.isValidSelector(sel)) {
|
|
|
return this;
|
|
|
}
|
|
|
|
|
|
// Opera throws an error if there's a syntax error in assigned
|
|
|
// cssText. Avoid this using a worker style collection, then
|
|
|
// assigning the resulting cssText.
|
|
|
if (rule) {
|
|
|
rule.style.cssText = StyleSheet.toCssText(css,rule.style.cssText);
|
|
|
} else {
|
|
|
idx = sheet[_rules].length;
|
|
|
css = StyleSheet.toCssText(css);
|
|
|
|
|
|
// IE throws an error when attempting to addRule(sel,'',n)
|
|
|
// which would crop up if no, or only invalid values are used
|
|
|
if (css) {
|
|
|
_insertRule(sel, css, idx);
|
|
|
|
|
|
// Safari replaces the rules collection, but maintains the
|
|
|
// rule instances in the new collection when rules are
|
|
|
// added/removed
|
|
|
cssRules[sel] = sheet[_rules][idx];
|
|
|
}
|
|
|
}
|
|
|
return this;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* <p>Unset style properties for a provided selector string, removing
|
|
|
* their effect from the style cascade.</p>
|
|
|
*
|
|
|
* <p>If the selector includes commas, it will be split into individual
|
|
|
* selectors and applied accordingly. If there are no properties
|
|
|
* remaining in the rule after unsetting, the rule is removed.</p>
|
|
|
*
|
|
|
* <p>The style property or properties in the second parameter must be the
|
|
|
* <p>JavaScript style property names. E.g. fontSize rather than font-size.</p>
|
|
|
*
|
|
|
* <p>The float style property will be unset by any of "float",
|
|
|
* "styleFloat", or "cssFloat".</p>
|
|
|
*
|
|
|
* @method unset
|
|
|
* @param sel {String} the selector string to apply the changes to
|
|
|
* @param css {String|Array} style property name or Array of names
|
|
|
* @return {StyleSheet} the StyleSheet instance
|
|
|
* @chainable
|
|
|
*/
|
|
|
unset : function (sel,css) {
|
|
|
var rule = cssRules[sel],
|
|
|
multi = sel.split(/\s*,\s*/),
|
|
|
remove = !css,
|
|
|
rules, i;
|
|
|
|
|
|
// IE's addRule doesn't support multiple comma delimited selectors
|
|
|
// so rules are mapped internally by atomic selectors
|
|
|
if (multi.length > 1) {
|
|
|
for (i = multi.length - 1; i >= 0; --i) {
|
|
|
this.unset(multi[i], css);
|
|
|
}
|
|
|
return this;
|
|
|
}
|
|
|
|
|
|
if (rule) {
|
|
|
if (!remove) {
|
|
|
if (!lang.isArray(css)) {
|
|
|
css = [css];
|
|
|
}
|
|
|
|
|
|
workerStyle.cssText = rule.style.cssText;
|
|
|
for (i = css.length - 1; i >= 0; --i) {
|
|
|
_unsetProperty(workerStyle,css[i]);
|
|
|
}
|
|
|
|
|
|
if (workerStyle.cssText) {
|
|
|
rule.style.cssText = workerStyle.cssText;
|
|
|
} else {
|
|
|
remove = true;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (remove) { // remove the rule altogether
|
|
|
rules = sheet[_rules];
|
|
|
for (i = rules.length - 1; i >= 0; --i) {
|
|
|
if (rules[i] === rule) {
|
|
|
delete cssRules[sel];
|
|
|
_deleteRule(i);
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return this;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Get the current cssText for a rule or the entire sheet. If the
|
|
|
* selector param is supplied, only the cssText for that rule will be
|
|
|
* returned, if found. If the selector string targets multiple
|
|
|
* selectors separated by commas, the cssText of the first rule only
|
|
|
* will be returned. If no selector string, the stylesheet's full
|
|
|
* cssText will be returned.
|
|
|
*
|
|
|
* @method getCssText
|
|
|
* @param sel {String} Selector string
|
|
|
* @return {String}
|
|
|
*/
|
|
|
getCssText : function (sel) {
|
|
|
var rule,css;
|
|
|
|
|
|
if (lang.isString(sel)) {
|
|
|
// IE's addRule doesn't support multiple comma delimited
|
|
|
// selectors so rules are mapped internally by atomic selectors
|
|
|
rule = cssRules[sel.split(/\s*,\s*/)[0]];
|
|
|
|
|
|
return rule ? rule.style.cssText : null;
|
|
|
} else {
|
|
|
css = [];
|
|
|
for (sel in cssRules) {
|
|
|
if (cssRules.hasOwnProperty(sel)) {
|
|
|
rule = cssRules[sel];
|
|
|
css.push(rule.selectorText+" {"+rule.style.cssText+"}");
|
|
|
}
|
|
|
}
|
|
|
return css.join("\n");
|
|
|
}
|
|
|
}
|
|
|
},true);
|
|
|
|
|
|
}
|
|
|
|
|
|
_toCssText = function (css,base) {
|
|
|
var f = css.styleFloat || css.cssFloat || css['float'],
|
|
|
prop;
|
|
|
|
|
|
workerStyle.cssText = base || '';
|
|
|
|
|
|
if (lang.isString(css)) {
|
|
|
// There is a danger here of incremental memory consumption in Opera
|
|
|
workerStyle.cssText += ';' + css;
|
|
|
} else {
|
|
|
if (f && !css[floatAttr]) {
|
|
|
css = lang.merge(css);
|
|
|
delete css.styleFloat; delete css.cssFloat; delete css['float'];
|
|
|
css[floatAttr] = f;
|
|
|
}
|
|
|
|
|
|
for (prop in css) {
|
|
|
if (css.hasOwnProperty(prop)) {
|
|
|
try {
|
|
|
// IE throws Invalid Value errors and doesn't like whitespace
|
|
|
// in values ala ' red' or 'red '
|
|
|
workerStyle[prop] = lang.trim(css[prop]);
|
|
|
}
|
|
|
catch (e) {
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return workerStyle.cssText;
|
|
|
};
|
|
|
|
|
|
lang.augmentObject(StyleSheet, {
|
|
|
/**
|
|
|
* <p>Converts an object literal of style properties and values into a string
|
|
|
* of css text. This can then be assigned to el.style.cssText.</p>
|
|
|
*
|
|
|
* <p>The optional second parameter is a cssText string representing the
|
|
|
* starting state of the style prior to alterations. This is most often
|
|
|
* extracted from the eventual target's current el.style.cssText.</p>
|
|
|
*
|
|
|
* @method StyleSheet.toCssText
|
|
|
* @param css {Object} object literal of style properties and values
|
|
|
* @param cssText {String} OPTIONAL starting cssText value
|
|
|
* @return {String} the resulting cssText string
|
|
|
* @static
|
|
|
*/
|
|
|
toCssText : (('opacity' in workerStyle) ? _toCssText :
|
|
|
// Wrap IE's toCssText to catch opacity. The copy/merge is to preserve
|
|
|
// the input object's integrity, but if float and opacity are set, the
|
|
|
// input will be copied twice in IE. Is there a way to avoid this
|
|
|
// without increasing the byte count?
|
|
|
function (css, cssText) {
|
|
|
if (lang.isObject(css) && 'opacity' in css) {
|
|
|
css = lang.merge(css,{
|
|
|
filter: 'alpha(opacity='+(css.opacity*100)+')'
|
|
|
});
|
|
|
delete css.opacity;
|
|
|
}
|
|
|
return _toCssText(css,cssText);
|
|
|
}),
|
|
|
|
|
|
/**
|
|
|
* Registers a StyleSheet instance in the static registry by the given name
|
|
|
*
|
|
|
* @method StyleSheet.register
|
|
|
* @param name {String} the name to assign the StyleSheet in the registry
|
|
|
* @param sheet {StyleSheet} The StyleSheet instance
|
|
|
* @return {Boolean} false if no name or sheet is not a StyleSheet
|
|
|
* instance. true otherwise.
|
|
|
* @static
|
|
|
*/
|
|
|
register : function (name,sheet) {
|
|
|
return !!(name && sheet instanceof StyleSheet &&
|
|
|
!sheets[name] && (sheets[name] = sheet));
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* <p>Determines if a selector string is safe to use. Used internally
|
|
|
* in set to prevent IE from locking up when attempting to add a rule for a
|
|
|
* "bad selector".</p>
|
|
|
*
|
|
|
* <p>Bad selectors are considered to be any string containing unescaped
|
|
|
* `~!@$%^&()+=|{}[];'"?< or space. Also forbidden are . or # followed by
|
|
|
* anything other than an alphanumeric. Additionally -abc or .-abc or
|
|
|
* #_abc or '# ' all fail. There are likely more failure cases, so
|
|
|
* please file a bug if you encounter one.</p>
|
|
|
*
|
|
|
* @method StyleSheet.isValidSelector
|
|
|
* @param sel {String} the selector string
|
|
|
* @return {Boolean}
|
|
|
* @static
|
|
|
*/
|
|
|
isValidSelector : function (sel) {
|
|
|
var valid = false;
|
|
|
|
|
|
if (sel && lang.isString(sel)) {
|
|
|
|
|
|
if (!selectors.hasOwnProperty(sel)) {
|
|
|
// TEST: there should be nothing but white-space left after
|
|
|
// these destructive regexs
|
|
|
selectors[sel] = !/\S/.test(
|
|
|
// combinators
|
|
|
sel.replace(/\s+|\s*[+~>]\s*/g,' ').
|
|
|
// attribute selectors (contents not validated)
|
|
|
replace(/([^ ])\[.*?\]/g,'$1').
|
|
|
// pseudo-class|element selectors (contents of parens
|
|
|
// such as :nth-of-type(2) or :not(...) not validated)
|
|
|
replace(/([^ ])::?[a-z][a-z\-]+[a-z](?:\(.*?\))?/ig,'$1').
|
|
|
// element tags
|
|
|
replace(/(?:^| )[a-z0-6]+/ig,' ').
|
|
|
// escaped characters
|
|
|
replace(/\\./g,'').
|
|
|
// class and id identifiers
|
|
|
replace(/[.#]\w[\w\-]*/g,''));
|
|
|
}
|
|
|
|
|
|
valid = selectors[sel];
|
|
|
}
|
|
|
|
|
|
return valid;
|
|
|
}
|
|
|
},true);
|
|
|
|
|
|
YAHOO.util.StyleSheet = StyleSheet;
|
|
|
|
|
|
})();
|
|
|
|
|
|
/*
|
|
|
|
|
|
NOTES
|
|
|
* Style node must be added to the head element. Safari does not honor styles
|
|
|
applied to StyleSheet objects on style nodes in the body.
|
|
|
* StyleSheet object is created on the style node when the style node is added
|
|
|
to the head element in Firefox 2 (and maybe 3?)
|
|
|
* The cssRules collection is replaced after insertRule/deleteRule calls in
|
|
|
Safari 3.1. Existing Rules are used in the new collection, so the collection
|
|
|
cannot be cached, but the rules can be.
|
|
|
* Opera requires that the index be passed with insertRule.
|
|
|
* Same-domain restrictions prevent modifying StyleSheet objects attached to
|
|
|
link elements with remote href (or "about:blank" or "javascript:false")
|
|
|
* Same-domain restrictions prevent reading StyleSheet cssRules/rules
|
|
|
collection of link elements with remote href (or "about:blank" or
|
|
|
"javascript:false")
|
|
|
* Same-domain restrictions result in Safari not populating node.sheet property
|
|
|
for link elements with remote href (et.al)
|
|
|
* IE names StyleSheet related properties and methods differently (see code)
|
|
|
* IE converts tag names to upper case in the Rule's selectorText
|
|
|
* IE converts empty string assignment to complex properties to value settings
|
|
|
for all child properties. E.g. style.background = '' sets non-'' values on
|
|
|
style.backgroundPosition, style.backgroundColor, etc. All else clear
|
|
|
style.background and all child properties.
|
|
|
* IE assignment style.filter = '' will result in style.cssText == 'FILTER:'
|
|
|
* All browsers support Rule.style.cssText as a read/write property, leaving
|
|
|
only opacity needing to be accounted for.
|
|
|
* Benchmarks of style.property = value vs style.cssText += 'property: value'
|
|
|
indicate cssText is slightly slower for single property assignment. For
|
|
|
multiple property assignment, cssText speed stays relatively the same where
|
|
|
style.property speed decreases linearly by the number of properties set.
|
|
|
Exception being Opera 9.27, where style.property is always faster than
|
|
|
style.cssText.
|
|
|
* Opera 9.5b throws a syntax error when assigning cssText with a syntax error.
|
|
|
* Opera 9.5 doesn't honor rule.style.cssText = ''. Previous style persists.
|
|
|
You have to remove the rule altogether.
|
|
|
* Stylesheet properties set with !important will trump inline style set on an
|
|
|
element or in el.style.property.
|
|
|
* Creating a worker style collection like document.createElement('p').style;
|
|
|
will fail after a time in FF (~5secs of inactivity). Property assignments
|
|
|
will not alter the property or cssText. It may be the generated node is
|
|
|
garbage collected and the style collection becomes inert (speculation).
|
|
|
* IE locks up when attempting to add a rule with a selector including at least
|
|
|
characters {[]}~`!@%^&*()+=|? (unescaped) and leading _ or -
|
|
|
such as addRule('-foo','{ color: red }') or addRule('._abc','{...}')
|
|
|
* IE's addRule doesn't support comma separated selectors such as
|
|
|
addRule('.foo, .bar','{..}')
|
|
|
* IE throws an error on valid values with leading/trailing white space.
|
|
|
* When creating an entire sheet at once, only FF2/3 & Opera allow creating a
|
|
|
style node, setting its innerHTML and appending to head.
|
|
|
* When creating an entire sheet at once, Safari requires the style node to be
|
|
|
created with content in innerHTML of another element.
|
|
|
* When creating an entire sheet at once, IE requires the style node content to
|
|
|
be set via node.styleSheet.cssText
|
|
|
* When creating an entire sheet at once in IE, styleSheet.cssText can't be
|
|
|
written until node.type = 'text/css'; is performed.
|
|
|
* When creating an entire sheet at once in IE, load-time fork on
|
|
|
var styleNode = d.createElement('style'); _method = styleNode.styleSheet ?..
|
|
|
fails (falsey). During run-time, the test for .styleSheet works fine
|
|
|
* Setting complex properties in cssText will SOMETIMES allow child properties
|
|
|
to be unset
|
|
|
set unset FF2 FF3 S3.1 IE6 IE7 Op9.27 Op9.5
|
|
|
---------- ----------------- --- --- ---- --- --- ------ -----
|
|
|
border -top NO NO YES YES YES YES YES
|
|
|
-top-color NO NO YES YES YES
|
|
|
-color NO NO NO NO NO
|
|
|
background -color NO NO YES YES YES
|
|
|
-position NO NO YES YES YES
|
|
|
-position-x NO NO NO NO NO
|
|
|
font line-height YES YES NO NO NO NO YES
|
|
|
-style YES YES NO YES YES
|
|
|
-size YES YES NO YES YES
|
|
|
-size-adjust ??? ??? n/a n/a n/a ??? ???
|
|
|
padding -top NO NO YES YES YES
|
|
|
margin -top NO NO YES YES YES
|
|
|
list-style -type YES YES YES YES YES
|
|
|
-position YES YES YES YES YES
|
|
|
overflow -x NO NO YES n/a YES
|
|
|
|
|
|
??? - unsetting font-size-adjust has the same effect as unsetting font-size
|
|
|
* FireFox and WebKit populate rule.cssText as "SELECTOR { CSSTEXT }", but
|
|
|
Opera and IE do not.
|
|
|
* IE6 and IE7 silently ignore the { and } if passed into addRule('.foo','{
|
|
|
color:#000}',0). IE8 does not and creates an empty rule.
|
|
|
* IE6-8 addRule('.foo','',n) throws an error. Must supply *some* cssText
|
|
|
*/
|
|
|
|
|
|
YAHOO.register("stylesheet", YAHOO.util.StyleSheet, {version: "2.8.2r1", build: "7"});
|
|
|
|
