@ribajs/core/dist/src/binders/add-class.binder.js

Core module of Riba.js

import { Binder } from "../binder.js";
export class AddClassBinder extends Binder {
    static key = "add-class";
    function = true;
    priority = 1000;
    staticClasses;
    bind(el) {
        const className = el.getAttribute("class") || "";
        this.staticClasses = className.split(" ");
    }
    unbind() {
        delete this.staticClasses;
    }
    routine(el, newValue) {
        if (newValue) {
            if (this.staticClasses?.indexOf(newValue) === -1) {
                el.setAttribute("class", this.staticClasses.join(" ") + " " + newValue);
            }
        }
        else {
            if (this.staticClasses) {
                el.setAttribute("class", this.staticClasses.join(" "));
            }
        }
        const className = el.getAttribute("class");
        if (className) {
            el.setAttribute("class", className.trim());
        }
    }
}
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