Function EditorManager

src/lib/editorManager.js:94–3066

* Represents an editor manager that handles multiple files and provides various editor configurations and event listeners. * @param {HTMLElement} $header - The header element. * @param {HTMLElement} $body - The body element. * @returns {Promise } A promise that resolves to the editor manag

($header, $body)

 * @returns {Promise<Object>} A promise that resolves to the editor manager object.
 */
async function EditorManager($header, $body) {
	/**
	 * @type {Collapsible & HTMLElement}
	 */
	let $openFileList;
	let TIMEOUT_VALUE = 500;
	let preventScrollbarV = false;
	let preventScrollbarH = false;
	let scrollBarVisibilityCount = 0;
	let timeoutQuicktoolsToggler;
	let timeoutHeaderToggler;
	let isScrolling = false;
	let lastScrollTop = 0;
	let lastScrollLeft = 0;
	let suppressCursorRevealUntil = 0;
	let scrollbarScrollLockUntil = 0;
	let scrollbarScrollLockTop = null;
	let scrollbarScrollLockLeft = null;
	let scrollRestoreFrame = 0;
	let scrollRestoreNestedFrame = 0;
	let scrollRestoreTimeout = 0;

	// Debounce timers for CodeMirror change handling
	let checkTimeout = null;
	let autosaveTimeout = null;
	let touchSelectionController = null;
	let touchSelectionSyncRaf = 0;
	let nativeContextMenuDisabled = null;
	const recoverableWarningKeys = new Set();

	function warnRecoverable(message, error, key) {
		if (key) {
			if (recoverableWarningKeys.has(key)) return;
			recoverableWarningKeys.add(key);
		}
		console.warn(message, error);
	}

	function isCoarsePointerDevice() {
		if (typeof window !== "undefined") {
			try {
				if (window.matchMedia?.("(pointer: coarse)").matches) {
					return true;
				}
			} catch (_) {
				// Ignore matchMedia capability errors and fall through.
			}
		}
		return (
			typeof navigator !== "undefined" &&
			Number(navigator.maxTouchPoints || 0) > 0
		);
	}

	const setNativeContextMenuDisabled = (disabled) => {
		const value = !!disabled;
		if (nativeContextMenuDisabled === value) return;
		nativeContextMenuDisabled = value;