| Path : /var/www/html/tool-ob/ToolsPortal/node_modules/react-style-singleton/dist/es5/ |
|
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| Current File : /var/www/html/tool-ob/ToolsPortal/node_modules/react-style-singleton/dist/es5/singleton.js |
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.stylesheetSingleton = void 0;
var get_nonce_1 = require("get-nonce");
function makeStyleTag() {
if (!document)
return null;
var tag = document.createElement('style');
tag.type = 'text/css';
var nonce = (0, get_nonce_1.getNonce)();
if (nonce) {
tag.setAttribute('nonce', nonce);
}
return tag;
}
function injectStyles(tag, css) {
// @ts-ignore
if (tag.styleSheet) {
// @ts-ignore
tag.styleSheet.cssText = css;
}
else {
tag.appendChild(document.createTextNode(css));
}
}
function insertStyleTag(tag) {
var head = document.head || document.getElementsByTagName('head')[0];
head.appendChild(tag);
}
var stylesheetSingleton = function () {
var counter = 0;
var stylesheet = null;
return {
add: function (style) {
if (counter == 0) {
if ((stylesheet = makeStyleTag())) {
injectStyles(stylesheet, style);
insertStyleTag(stylesheet);
}
}
counter++;
},
remove: function () {
counter--;
if (!counter && stylesheet) {
stylesheet.parentNode && stylesheet.parentNode.removeChild(stylesheet);
stylesheet = null;
}
},
};
};
exports.stylesheetSingleton = stylesheetSingleton;