igniteui-webcomponents/theming/theming-decorator.js

Ignite UI for Web Components is a complete library of UI components, giving you the ability to build modern web applications using encapsulation and the concept of reusable components in a dependency-free approach.

import { createThemeController } from './theming-controller.js';
export function themes(themes, options) {
    return (proto) => {
        proto.addInitializer((instance) => {
            const controller = createThemeController(instance, themes);
            if (options?.exposeController) {
                Object.defineProperty(instance, themeSymbol, {
                    get() {
                        return controller;
                    },
                    configurable: true,
                    enumerable: false,
                });
            }
        });
    };
}
export function getThemeController(host) {
    return isControllerExposed(host) ? host[themeSymbol] : undefined;
}
function isControllerExposed(host) {
    return Object.getOwnPropertySymbols(host).includes(themeSymbol);
}
const themeSymbol = Symbol('Theming Controller');
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