shahnevis-core/dist/core/historyManager.js

**Shahnevis Core** is a lightweight and flexible library for building custom code editors. It provides essential features like syntax highlighting, a minimap, multi-cursor support, line numbering, and plugin management. This library is framework-agnostic,

import { saveState as _saveState, debounceSaveState as _debounceSaveState, undo as _undo, redo as _redo, handleUndoRedo as handleUndoRedoAction } from "../utils/stackManager";

/**
 * Factory to create an isolated history manager for each editor instance.
 * @param {number} maxSize - Maximum number of history entries to keep.
 */
export function createHistoryManager() {
  var maxSize = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 100;
  var manager = {
    undoStack: [],
    redoStack: [],
    isUndoingOrRedoing: false,
    maxHistory: maxSize,
    debounceTimeout: null
  };
  return {
    /** Snapshot the current state */
    saveState: function saveState(editor, foldingUtils) {
      return _saveState(manager, editor, foldingUtils, maxSize);
    },
    /** Debounced snapshot */
    debounceSaveState: function debounceSaveState(editor, foldingUtils) {
      return _debounceSaveState(manager, editor, foldingUtils);
    },
    /** Undo action */
    undo: function undo(editor, foldingUtils) {
      return _undo(manager, editor, foldingUtils);
    },
    /** Redo action */
    redo: function redo(editor, foldingUtils) {
      return _redo(manager, editor, foldingUtils);
    },
    /** Keydown handler for undo/redo */
    handleUndoRedo: function handleUndoRedo(e, editor, foldingUtils) {
      return handleUndoRedoAction(manager, e, editor, foldingUtils);
    }
  };
}