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misc updates WIP

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Alex Adam 2020-02-24 10:50:00 +02:00
parent 5d1ff43012
commit 74673b5449
1 changed files with 34 additions and 10 deletions
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40
web-extension/extractHtml.js
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@ -18,16 +18,22 @@ var mathMLTags = [
]
var cssClassesToTmpIds = {};
var tmpIdsToNewCss = {};
var tmpIdsToNewCssSTRING = {};
// src: https://idpf.github.io/a11y-guidelines/content/style/reference.html
var supportedCss = [
'background-color',
'border',
'color',
'font',
'letter-spacing', 'line-height',
// 'letter-spacing',
'line-height',
'list-style',
'padding', 'quotes',
'text-decoration', 'text-transform', 'text-align', 'word-spacing',
'padding',
// 'text-decoration',
// 'text-transform',
'text-align',
// 'word-spacing',
];
//////
@ -290,23 +296,41 @@ function extractCss(includeStyle, appliedStyles) {
if (!tmpName) {
// TODO - collision between class names when multiple pages
// rename 'class-' to 'c'
tmpName = 'c' + Math.floor(Math.random()*100000);
tmpName = 'c' + i // Math.floor(Math.random()*100000);
cssClassesToTmpIds[classNames] = tmpName;
}
if (!tmpNewCss) {
// var style = window.getComputedStyle(pre);
tmpNewCss = {};
for (let cssTagName of supportedCss) {
let cssValue = $pre.css(cssTagName);
if (cssValue && cssValue.length > 0) {
// TODO - optimisation IF no css value, skip it (smaller css output file)
// create a filter function based on css-tag and skip values
// if (cssValue.indexOf('none') === -1 || cssValue.indexOf('0px') === -1) {
tmpNewCss[cssTagName] = cssValue;
// }
}
}
// Reuse CSS - if the same css code was generated for another element, reuse it's class name
var tcss = JSON.stringify(tmpNewCss)
var found = false
if (Object.keys(tmpIdsToNewCssSTRING).length === 0) {
tmpIdsToNewCssSTRING[tmpName] = tcss;
tmpIdsToNewCss[tmpName] = tmpNewCss;
} else {
for (const key in tmpIdsToNewCssSTRING) {
if (tmpIdsToNewCssSTRING[key] === tcss) {
tmpName = key
found = true
break
}
}
if (!found) {
tmpIdsToNewCssSTRING[tmpName] = tcss;
tmpIdsToNewCss[tmpName] = tmpNewCss;
}
}
}
pre.setAttribute('data-class', tmpName);
}