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script.js
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var doc = document;
var initTextarea = doc.querySelector('#init');
var resultTextarea = doc.querySelector('#result');
var resultCssTextarea = doc.querySelector('#result-css');
var resultDemo = doc.querySelector('#demo');
var demoWrapper = doc.querySelector('.demo-wrapper');
var contrastButtons = doc.querySelectorAll('.contrast-button');
var contrastButtonCurrent = null;
var backgroundColor = '';
var expanders = doc.querySelectorAll('.expander');
var expandedClass = 'expanded';
var demoContrastClass = 'demo-contrast-on';
var symbols = /[\r\n%#()<>?\[\\\]^`{|}]/g;
const quotesInputs = document.querySelectorAll('.options__input');
let externalQuotesValue = document.querySelector('.options__input:checked').value;
let quotes = getQuotes();
const buttonExample = document.querySelector('.button-example');
// Textarea Actions
//----------------------------------------
initTextarea.oninput = function() {
resultTextarea.value = encodeSVG(initTextarea.value);
getResults();
};
initTextarea.onkeyup = function() {
getResults();
};
function getResults() {
if (!initTextarea.value) {
resultCssTextarea.value = '';
resultDemo.setAttribute('style', '');
return;
}
var namespaced = addNameSpace(initTextarea.value);
var escaped = encodeSVG(namespaced);
resultTextarea.value = escaped;
var resultCss = `background-image: url(${quotes.level1}data:image/svg+xml,${escaped}${quotes.level1});`;
resultCss
8000
Textarea.value = resultCss;
resultDemo.setAttribute('style', resultCss);
}
// Tabs Actions
//----------------------------------------
for (var i = 0; i < expanders.length; i++) {
var expander = expanders[i];
expander.onclick = function() {
var parent = this.parentNode;
var expanded = parent.querySelector('.' + expandedClass);
expanded.classList.toggle('hidden');
this.classList.toggle('opened');
};
}
// Switch quotes
//----------------------------------------
quotesInputs.forEach(input => {
input.addEventListener('input', function() {
externalQuotesValue = this.value;
quotes = getQuotes();
getResults();
});
});
// Set example
//----------------------------------------
buttonExample.addEventListener('click', () => {
initTextarea.value = `<svg>
<circle r="50" cx="50" cy="50" fill="tomato"/>
<circle r="41" cx="47" cy="50" fill="orange"/>
<circle r="33" cx="48" cy="53" fill="gold"/>
<circle r="25" cx="49" cy="51" fill="yellowgreen"/>
<circle r="17" cx="52" cy="50" fill="lightseagreen"/>
<circle r="9" cx="55" cy="48" fill="teal"/>
<circle r="8" cx="62" cy="53" fill="gold"/>
<circle r="7" cx="67" cy="51" fill="yellowgreen"/>
<circle r="6" cx="70" cy="50" fill="orange"/>
<circle r="4" cx="75" cy="50" fill="tomato"/>
</svg>`;
getResults();
})
// Demo Background Switch
//----------------------------------------
function contrastButtonsSetCurrent(button) {
const classCurrent = 'contrast-button--current';
if (contrastButtonCurrent) {
contrastButtonCurrent.classList.remove(classCurrent);
}
backgroundColor = button.dataset.color;
contrastButtonCurrent = button;
button.classList.add(classCurrent);
}
contrastButtons.forEach(button => {
if (!backgroundColor) {
contrastButtonsSetCurrent(button);
}
button.addEventListener('click', function() {
contrastButtonsSetCurrent(this);
demoWrapper.style.background = backgroundColor;
});
});
// Namespace
//----------------------------------------
function addNameSpace(data) {
if (data.indexOf('http://www.w3.org/2000/svg') < 0) {
data = data.replace(/<svg/g, `<svg xmlns=${quotes.level2}http://www.w3.org/2000/svg${quotes.level2}`);
}
return data;
}
// Encoding
//----------------------------------------
function encodeSVG(data) {
// Use single quotes instead of double to avoid encoding.
if (externalQuotesValue === 'double') {
data = data.replace(/"/g, '\'');
} else {
data = data.replace(/'/g, '"');
}
data = data.replace(/>\s{1,}</g, "><");
data = data.replace(/\s{2,}/g, " ");
return data.replace(symbols, encodeURIComponent);
}
// Get quotes for levels
//----------------------------------------
function getQuotes() {
const double = `"`;
const single = `'`;
return {
level1: externalQuotesValue === 'double' ? double : single,
level2: externalQuotesValue === 'double' ? single : double
};
}
// Common
//----------------------------------------
function out(data) {
console.log(data);
}