sj-miniprogram/merchant-chat-pc/node_modules/element-plus/es/hooks/use-lockscreen/index.mjs

import { throwError } from "../../utils/error.mjs";
import { addClass, getStyle, hasClass, removeClass } from "../../utils/dom/style.mjs";
import { getScrollBarWidth } from "../../utils/dom/scroll.mjs";
import { useNamespace } from "../use-namespace/index.mjs";
import { computed, isRef, onScopeDispose, watch } from "vue";

//#region ../../packages/hooks/use-lockscreen/index.ts
/**
* Hook that monitoring the ref value to lock or unlock the screen.
* When the trigger became true, it assumes modal is now opened and vice versa.
* @param trigger {Ref<boolean>}
*/
const useLockscreen = (trigger, options = {}) => {
	if (!isRef(trigger)) throwError("[useLockscreen]", "You need to pass a ref param to this function");
	const ns = options.ns || useNamespace("popup");
	const hiddenCls = computed(() => ns.bm("parent", "hidden"));
	let scrollBarWidth = 0;
	let withoutHiddenClass = false;
	let bodyWidth = "0";
	let cleaned = false;
	const cleanup = () => {
		if (cleaned) return;
		cleaned = true;
		setTimeout(() => {
			if (typeof document === "undefined") return;
			if (withoutHiddenClass && document) {
				document.body.style.width = bodyWidth;
				removeClass(document.body, hiddenCls.value);
			}
		}, 200);
	};
	watch(trigger, (val) => {
		if (!val) {
			cleanup();
			return;
		}
		cleaned = false;
		withoutHiddenClass = !hasClass(document.body, hiddenCls.value);
		if (withoutHiddenClass) {
			bodyWidth = document.body.style.width;
			addClass(document.body, hiddenCls.value);
		}
		scrollBarWidth = getScrollBarWidth(ns.namespace.value);
		const bodyHasOverflow = document.documentElement.clientHeight < document.body.scrollHeight;
		const bodyOverflowY = getStyle(document.body, "overflowY");
		if (scrollBarWidth > 0 && (bodyHasOverflow || bodyOverflowY === "scroll") && withoutHiddenClass) document.body.style.width = `calc(100% - ${scrollBarWidth}px)`;
	});
	onScopeDispose(() => cleanup());
};

//#endregion
export { useLockscreen };
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