define(["require", "exports", "./dom/getWindow"], function (require, exports, getWindow_1) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.setFocusVisibility = exports.IsFocusHiddenClassName = exports.IsFocusVisibleClassName = void 0;
    exports.IsFocusVisibleClassName = 'ms-Fabric--isFocusVisible';
    exports.IsFocusHiddenClassName = 'ms-Fabric--isFocusHidden';
    function updateClassList(el, enabled) {
        if (el) {
            el.classList.add(enabled ? exports.IsFocusVisibleClassName : exports.IsFocusHiddenClassName);
            el.classList.remove(enabled ? exports.IsFocusHiddenClassName : exports.IsFocusVisibleClassName);
        }
    }
    /**
     * Sets the visibility of focus styling.
     *
     * By default, focus styles (the box surrounding a focused Button, for example) only show up when navigational
     * keypresses occur (through Tab, arrows, PgUp/PgDn, Home and End), and are hidden when mouse interactions occur.
     * This API provides an imperative way to turn them on/off.
     *
     * A use case might be when you have a keypress like ctrl-f6 navigate to a particular region on the page,
     * and want focus to show up.
     *
     * @param enabled - Whether to turn focus visibility on or off.
     * @param target - Optional target from which to get window in case no `providerElem` has been specified.
     * @param registeredProviders - Array of provider refs that are associated with a FocusRectsProvider. If no array
     *                              is passed in, the classnames are attached to the document body that contains `target`.
     */
    function setFocusVisibility(enabled, target, registeredProviders) {
        var _a;
        if (registeredProviders) {
            registeredProviders.forEach(function (ref) { return updateClassList(ref.current, enabled); });
        }
        else {
            updateClassList((_a = (0, getWindow_1.getWindow)(target)) === null || _a === void 0 ? void 0 : _a.document.body, enabled);
        }
    }
    exports.setFocusVisibility = setFocusVisibility;
});
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