import { _ as h, n as x } from "./class-map-CwiboTfb.mjs";
/**
 * @license
 * Copyright 2023 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
const s = Symbol("isFocusable"), r = Symbol("privateIsFocusable"), a = Symbol("externalTabIndex"), n = Symbol("isUpdatingTabIndex"), i = Symbol("updateTabIndex");
function m(l) {
  var b, o, c;
  class u extends l {
    constructor() {
      super(...arguments), this[b] = !0, this[o] = null, this[c] = !1;
    }
    get [s]() {
      return this[r];
    }
    set [s](t) {
      this[s] !== t && (this[r] = t, this[i]());
    }
    connectedCallback() {
      super.connectedCallback(), this[i]();
    }
    attributeChangedCallback(t, e, d) {
      if (t !== "tabindex") {
        super.attributeChangedCallback(t, e, d);
        return;
      }
      if (this.requestUpdate("tabIndex", Number(e ?? -1)), !this[n]) {
        if (!this.hasAttribute("tabindex")) {
          this[a] = null, this[i]();
          return;
        }
        this[a] = this.tabIndex;
      }
    }
    [(b = r, o = a, c = n, i)]() {
      const t = this[s] ? 0 : -1, e = this[a] ?? t;
      this[n] = !0, this.tabIndex = e, this[n] = !1;
    }
  }
  return h([
    x({ noAccessor: !0 })
  ], u.prototype, "tabIndex", void 0), u;
}
export {
  m
};