mirror of
https://github.com/ether/etherpad-lite.git
synced 2025-10-31 08:11:10 +01:00
422 lines
9.5 KiB
JavaScript
422 lines
9.5 KiB
JavaScript
/**
|
||
* StyleFix 1.0.1
|
||
* @author Lea Verou
|
||
* MIT license
|
||
*/
|
||
|
||
(function(){
|
||
|
||
if(!window.addEventListener) {
|
||
return;
|
||
}
|
||
|
||
var self = window.StyleFix = {
|
||
link: function(link) {
|
||
try {
|
||
// Ignore stylesheets with data-noprefix attribute as well as alternate stylesheets
|
||
if(link.rel !== 'stylesheet' || !link.sheet.cssRules || link.hasAttribute('data-noprefix')) {
|
||
return;
|
||
}
|
||
}
|
||
catch(e) {
|
||
return;
|
||
}
|
||
if(link.href == "data:text/css,"){
|
||
return false;
|
||
}
|
||
var url = link.href || link.getAttribute('data-href'),
|
||
base = url.replace(/[^\/]+$/, ''),
|
||
parent = link.parentNode,
|
||
xhr = new XMLHttpRequest();
|
||
|
||
xhr.open('GET', url);
|
||
|
||
xhr.onreadystatechange = function() {
|
||
if(xhr.readyState === 4) {
|
||
var css = xhr.responseText;
|
||
|
||
if(css && link.parentNode) {
|
||
css = self.fix(css, true, link);
|
||
|
||
// Convert relative URLs to absolute, if needed
|
||
if(base) {
|
||
css = css.replace(/url\((?:'|")?(.+?)(?:'|")?\)/gi, function($0, url) {
|
||
if(!/^([a-z]{3,10}:|\/|#)/i.test(url)) { // If url not absolute & not a hash
|
||
// May contain sequences like /../ and /./ but those DO work
|
||
return 'url("' + base + url + '")';
|
||
}
|
||
|
||
return $0;
|
||
});
|
||
|
||
// behavior URLs shoudn’t be converted (Issue #19)
|
||
css = css.replace(RegExp('\\b(behavior:\\s*?url\\(\'?"?)' + base, 'gi'), '$1');
|
||
}
|
||
|
||
var style = document.createElement('style');
|
||
style.textContent = css;
|
||
style.media = link.media;
|
||
style.disabled = link.disabled;
|
||
style.setAttribute('data-href', link.getAttribute('href'));
|
||
|
||
parent.insertBefore(style, link);
|
||
parent.removeChild(link);
|
||
}
|
||
}
|
||
};
|
||
|
||
xhr.send(null);
|
||
|
||
link.setAttribute('data-inprogress', '');
|
||
},
|
||
|
||
styleElement: function(style) {
|
||
var disabled = style.disabled;
|
||
|
||
style.textContent = self.fix(style.textContent, true, style);
|
||
|
||
style.disabled = disabled;
|
||
},
|
||
|
||
styleAttribute: function(element) {
|
||
var css = element.getAttribute('style');
|
||
|
||
css = self.fix(css, false, element);
|
||
|
||
element.setAttribute('style', css);
|
||
},
|
||
|
||
process: function() {
|
||
// Linked stylesheets
|
||
$('link[rel="stylesheet"]:not([data-inprogress])').forEach(StyleFix.link);
|
||
|
||
// Inline stylesheets
|
||
$('style').forEach(StyleFix.styleElement);
|
||
|
||
// Inline styles
|
||
$('[style]').forEach(StyleFix.styleAttribute);
|
||
},
|
||
|
||
register: function(fixer, index) {
|
||
(self.fixers = self.fixers || [])
|
||
.splice(index === undefined? self.fixers.length : index, 0, fixer);
|
||
},
|
||
|
||
fix: function(css, raw) {
|
||
for(var i=0; i<self.fixers.length; i++) {
|
||
css = self.fixers[i](css, raw) || css;
|
||
}
|
||
|
||
return css;
|
||
},
|
||
|
||
camelCase: function(str) {
|
||
return str.replace(/-([a-z])/g, function($0, $1) { return $1.toUpperCase(); }).replace('-','');
|
||
},
|
||
|
||
deCamelCase: function(str) {
|
||
return str.replace(/[A-Z]/g, function($0) { return '-' + $0.toLowerCase() });
|
||
}
|
||
};
|
||
|
||
/**************************************
|
||
* Process styles
|
||
**************************************/
|
||
(function(){
|
||
setTimeout(function(){
|
||
$('link[rel="stylesheet"]').forEach(StyleFix.link);
|
||
}, 10);
|
||
|
||
document.addEventListener('DOMContentLoaded', StyleFix.process, false);
|
||
})();
|
||
|
||
function $(expr, con) {
|
||
return [].slice.call((con || document).querySelectorAll(expr));
|
||
}
|
||
|
||
})();
|
||
|
||
/**
|
||
* PrefixFree 1.0.4
|
||
* @author Lea Verou
|
||
* MIT license
|
||
*/
|
||
(function(root, undefined){
|
||
|
||
if(!window.StyleFix || !window.getComputedStyle) {
|
||
return;
|
||
}
|
||
|
||
var self = window.PrefixFree = {
|
||
prefixCSS: function(css, raw) {
|
||
var prefix = self.prefix;
|
||
|
||
function fix(what, before, after, replacement) {
|
||
what = self[what];
|
||
|
||
if(what.length) {
|
||
var regex = RegExp(before + '(' + what.join('|') + ')' + after, 'gi');
|
||
|
||
css = css.replace(regex, replacement);
|
||
}
|
||
}
|
||
|
||
fix('functions', '(\\s|:|,)', '\\s*\\(', '$1' + prefix + '$2(');
|
||
fix('keywords', '(\\s|:)', '(\\s|;|\\}|$)', '$1' + prefix + '$2$3');
|
||
fix('properties', '(^|\\{|\\s|;)', '\\s*:', '$1' + prefix + '$2:');
|
||
|
||
// Prefix properties *inside* values (issue #8)
|
||
if (self.properties.length) {
|
||
var regex = RegExp('\\b(' + self.properties.join('|') + ')(?!:)', 'gi');
|
||
|
||
fix('valueProperties', '\\b', ':(.+?);', function($0) {
|
||
return $0.replace(regex, prefix + "$1")
|
||
});
|
||
}
|
||
|
||
if(raw) {
|
||
fix('selectors', '', '\\b', self.prefixSelector);
|
||
fix('atrules', '@', '\\b', '@' + prefix + '$1');
|
||
}
|
||
|
||
// Fix double prefixing
|
||
css = css.replace(RegExp('-' + prefix, 'g'), '-');
|
||
|
||
return css;
|
||
},
|
||
|
||
// Warning: prefixXXX functions prefix no matter what, even if the XXX is supported prefix-less
|
||
prefixSelector: function(selector) {
|
||
return selector.replace(/^:{1,2}/, function($0) { return $0 + self.prefix })
|
||
},
|
||
|
||
prefixProperty: function(property, camelCase) {
|
||
var prefixed = self.prefix + property;
|
||
|
||
return camelCase? StyleFix.camelCase(prefixed) : prefixed;
|
||
}
|
||
};
|
||
|
||
/**************************************
|
||
* Properties
|
||
**************************************/
|
||
(function() {
|
||
var prefixes = {},
|
||
properties = [],
|
||
shorthands = {},
|
||
style = getComputedStyle(document.documentElement, null),
|
||
dummy = document.createElement('div').style;
|
||
|
||
// Why are we doing this instead of iterating over properties in a .style object? Cause Webkit won't iterate over those.
|
||
var iterate = function(property) {
|
||
if(property.charAt(0) === '-') {
|
||
properties.push(property);
|
||
|
||
var parts = property.split('-'),
|
||
prefix = parts[1];
|
||
|
||
// Count prefix uses
|
||
prefixes[prefix] = ++prefixes[prefix] || 1;
|
||
|
||
// This helps determining shorthands
|
||
while(parts.length > 3) {
|
||
parts.pop();
|
||
|
||
var shorthand = parts.join('-');
|
||
|
||
if(supported(shorthand) && properties.indexOf(shorthand) === -1) {
|
||
properties.push(shorthand);
|
||
}
|
||
}
|
||
}
|
||
},
|
||
supported = function(property) {
|
||
return StyleFix.camelCase(property) in dummy;
|
||
}
|
||
|
||
// Some browsers have numerical indices for the properties, some don't
|
||
if(style.length > 0) {
|
||
for(var i=0; i<style.length; i++) {
|
||
iterate(style[i])
|
||
}
|
||
}
|
||
else {
|
||
for(var property in style) {
|
||
iterate(StyleFix.deCamelCase(property));
|
||
}
|
||
}
|
||
|
||
// Find most frequently used prefix
|
||
var highest = {uses:0};
|
||
for(var prefix in prefixes) {
|
||
var uses = prefixes[prefix];
|
||
|
||
if(highest.uses < uses) {
|
||
highest = {prefix: prefix, uses: uses};
|
||
}
|
||
}
|
||
|
||
self.prefix = '-' + highest.prefix + '-';
|
||
self.Prefix = StyleFix.camelCase(self.prefix);
|
||
|
||
self.properties = [];
|
||
|
||
// Get properties ONLY supported with a prefix
|
||
for(var i=0; i<properties.length; i++) {
|
||
var property = properties[i];
|
||
|
||
if(property.indexOf(self.prefix) === 0) { // we might have multiple prefixes, like Opera
|
||
var unprefixed = property.slice(self.prefix.length);
|
||
|
||
if(!supported(unprefixed)) {
|
||
self.properties.push(unprefixed);
|
||
}
|
||
}
|
||
}
|
||
|
||
// IE fix
|
||
if(self.Prefix == 'Ms'
|
||
&& !('transform' in dummy)
|
||
&& !('MsTransform' in dummy)
|
||
&& ('msTransform' in dummy)) {
|
||
self.properties.push('transform', 'transform-origin');
|
||
}
|
||
|
||
self.properties.sort();
|
||
})();
|
||
|
||
/**************************************
|
||
* Values
|
||
**************************************/
|
||
(function() {
|
||
// Values that might need prefixing
|
||
var functions = {
|
||
'linear-gradient': {
|
||
property: 'backgroundImage',
|
||
params: 'red, teal'
|
||
},
|
||
'calc': {
|
||
property: 'width',
|
||
params: '1px + 5%'
|
||
},
|
||
'element': {
|
||
property: 'backgroundImage',
|
||
params: '#foo'
|
||
}
|
||
};
|
||
|
||
|
||
functions['repeating-linear-gradient'] =
|
||
functions['repeating-radial-gradient'] =
|
||
functions['radial-gradient'] =
|
||
functions['linear-gradient'];
|
||
|
||
var keywords = {
|
||
'initial': 'color',
|
||
'zoom-in': 'cursor',
|
||
'zoom-out': 'cursor',
|
||
'box': 'display',
|
||
'flexbox': 'display',
|
||
'inline-flexbox': 'display'
|
||
};
|
||
|
||
self.functions = [];
|
||
self.keywords = [];
|
||
|
||
var style = document.createElement('div').style;
|
||
|
||
function supported(value, property) {
|
||
style[property] = '';
|
||
style[property] = value;
|
||
|
||
return !!style[property];
|
||
}
|
||
|
||
for (var func in functions) {
|
||
var test = functions[func],
|
||
property = test.property,
|
||
value = func + '(' + test.params + ')';
|
||
|
||
if (!supported(value, property)
|
||
&& supported(self.prefix + value, property)) {
|
||
// It's supported, but with a prefix
|
||
self.functions.push(func);
|
||
}
|
||
}
|
||
|
||
for (var keyword in keywords) {
|
||
var property = keywords[keyword];
|
||
|
||
if (!supported(keyword, property)
|
||
&& supported(self.prefix + keyword, property)) {
|
||
// It's supported, but with a prefix
|
||
self.keywords.push(keyword);
|
||
}
|
||
}
|
||
|
||
})();
|
||
|
||
/**************************************
|
||
* Selectors and @-rules
|
||
**************************************/
|
||
(function() {
|
||
|
||
var
|
||
selectors = {
|
||
':read-only': null,
|
||
':read-write': null,
|
||
':any-link': null,
|
||
'::selection': null
|
||
},
|
||
|
||
atrules = {
|
||
'keyframes': 'name',
|
||
'viewport': null,
|
||
'document': 'regexp(".")'
|
||
};
|
||
|
||
self.selectors = [];
|
||
self.atrules = [];
|
||
|
||
var style = root.appendChild(document.createElement('style'));
|
||
|
||
function supported(selector) {
|
||
style.textContent = selector + '{}'; // Safari 4 has issues with style.innerHTML
|
||
|
||
return !!style.sheet.cssRules.length;
|
||
}
|
||
|
||
for(var selector in selectors) {
|
||
var test = selector + (selectors[selector]? '(' + selectors[selector] + ')' : '');
|
||
|
||
if(!supported(test) && supported(self.prefixSelector(test))) {
|
||
self.selectors.push(selector);
|
||
}
|
||
}
|
||
|
||
for(var atrule in atrules) {
|
||
var test = atrule + ' ' + (atrules[atrule] || '');
|
||
|
||
if(!supported('@' + test) && supported('@' + self.prefix + test)) {
|
||
self.atrules.push(atrule);
|
||
}
|
||
}
|
||
|
||
root.removeChild(style);
|
||
|
||
})();
|
||
|
||
// Properties that accept properties as their value
|
||
self.valueProperties = [
|
||
'transition',
|
||
'transition-property'
|
||
]
|
||
|
||
// Add class for current prefix
|
||
root.className += ' ' + self.prefix;
|
||
|
||
StyleFix.register(self.prefixCSS);
|
||
|
||
|
||
})(document.documentElement);
|