@antv/x6
Version:
JavaScript diagramming library that uses SVG and HTML for rendering.
53 lines • 1.92 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
import { Config } from '../global/config';
import { content } from '../style/raw';
import { Platform } from '../util';
import { Base } from './base';
export class CSSManager extends Base {
init() {
if (Config.autoInsertCSS) {
CSSManager.ensure();
}
}
dispose() {
CSSManager.clean();
}
}
__decorate([
CSSManager.dispose()
], CSSManager.prototype, "dispose", null);
(function (CSSManager) {
let styleElement;
let counter = 0;
function ensure() {
counter += 1;
if (counter > 1)
return;
if (!Platform.isApplyingHMR()) {
styleElement = document.createElement('style');
styleElement.setAttribute('type', 'text/css');
styleElement.textContent = content;
const head = document.querySelector('head');
if (head) {
head.insertBefore(styleElement, head.firstChild);
}
}
}
CSSManager.ensure = ensure;
function clean() {
counter -= 1;
if (counter > 0)
return;
if (styleElement && styleElement.parentNode) {
styleElement.parentNode.removeChild(styleElement);
}
styleElement = null;
}
CSSManager.clean = clean;
})(CSSManager || (CSSManager = {}));
//# sourceMappingURL=css.js.map