/**
 * Copyright IBM Corp. 2020, 2026
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */

import { __toESM } from "../../../_virtual/_rolldown/runtime.js";
import { require_classnames } from "../../../node_modules/classnames/index.js";
import { pkg } from "../../../settings.js";
import { usePageHeader } from "./context.js";
import { scrollableAncestor } from "./utils.js";
import React from "react";
import { IconButton } from "@carbon/react";
import { ChevronUp } from "@carbon/react/icons";

//#region src/components/PageHeader/next/PageHeaderScrollButton.tsx
/**
* Copyright IBM Corp. 2026
*
* This source code is licensed under the Apache-2.0 license found in the
* LICENSE file in the root directory of this source tree.
*/
var import_classnames = /* @__PURE__ */ __toESM(require_classnames());
const PageHeaderScrollButton = React.forwardRef(function PageHeaderExpander({ className, children, label, onClick, collapseText = "Collapse", expandText = "Expand", ...other }, ref) {
	const { refs, observerState } = usePageHeader();
	const fullyCollapsed = observerState.fullyCollapsed;
	const handleScroller = (isFullyCollapsed) => {
		if (!refs?.contentRef?.current) return;
		const scrollableTarget = scrollableAncestor(refs?.contentRef.current);
		if (!isFullyCollapsed) {
			const pageHeaderContentHeight = refs?.contentRef.current.offsetHeight;
			scrollableTarget?.scrollTo({
				top: pageHeaderContentHeight,
				behavior: "smooth"
			});
		} else scrollableTarget?.scrollTo({
			top: 0,
			behavior: "smooth"
		});
	};
	return /* @__PURE__ */ React.createElement(IconButton, {
		ref,
		label: fullyCollapsed ? expandText : collapseText,
		size: "md",
		kind: "ghost",
		autoAlign: true,
		...other,
		onClick: (event) => {
			onClick?.(event);
			handleScroller(!!fullyCollapsed);
		},
		className: (0, import_classnames.default)(className, `${pkg.prefix}--page-header--scroller-button`)
	}, /* @__PURE__ */ React.createElement(ChevronUp, { className: (0, import_classnames.default)(`${pkg.prefix}--page-header--scroller-button-icon`, { [`${pkg.prefix}--page-header--scroller-button-icon-collapsed`]: fullyCollapsed }) }));
});
PageHeaderScrollButton.displayName = "PageHeaderScrollButton";

//#endregion
export { PageHeaderScrollButton };