{
  "version": 3,
  "sources": ["../../src/y-utilities/y-multidoc-undomanager.js"],
  "sourcesContent": ["// File copied as is from the y-utilities package.\n/* eslint-disable @eslint-community/eslint-comments/disable-enable-pair */\n/* eslint-disable @eslint-community/eslint-comments/no-unlimited-disable */\n/* eslint-disable */\n// @ts-nocheck\n\nimport * as array from 'lib0/array';\nimport * as map from 'lib0/map';\nimport { Observable } from 'lib0/observable';\nimport * as Y from 'yjs';\n\n/**\n * @param {YMultiDocUndoManager} mum\n * @param {'undo' | 'redo'} type\n */\nconst popStackItem = ( mum, type ) => {\n\tconst stack = type === 'undo' ? mum.undoStack : mum.redoStack;\n\twhile ( stack.length > 0 ) {\n\t\tconst um = /** @type {Y.UndoManager} */ ( stack.pop() );\n\t\tconst prevUmStack = type === 'undo' ? um.undoStack : um.redoStack;\n\t\tconst stackItem = /** @type {any} */ ( prevUmStack.pop() );\n\t\tlet actionPerformed = false;\n\t\tif ( type === 'undo' ) {\n\t\t\tum.undoStack = [ stackItem ];\n\t\t\tactionPerformed = um.undo() !== null;\n\t\t\tum.undoStack = prevUmStack;\n\t\t} else {\n\t\t\tum.redoStack = [ stackItem ];\n\t\t\tactionPerformed = um.redo() !== null;\n\t\t\tum.redoStack = prevUmStack;\n\t\t}\n\t\tif ( actionPerformed ) {\n\t\t\treturn stackItem;\n\t\t}\n\t}\n\treturn null;\n};\n\n/**\n * @extends Observable<any>\n */\nexport class YMultiDocUndoManager extends Observable {\n\t/**\n\t * @param {Y.AbstractType<any>|Array<Y.AbstractType<any>>} typeScope Accepts either a single type, or an array of types\n\t * @param {ConstructorParameters<typeof Y.UndoManager>[1]} opts\n\t */\n\tconstructor( typeScope = [], opts = {} ) {\n\t\tsuper();\n\t\t/**\n\t\t * @type {Map<Y.Doc, Y.UndoManager>}\n\t\t */\n\t\tthis.docs = new Map();\n\t\tthis.trackedOrigins = opts.trackedOrigins || new Set( [ null ] );\n\t\topts.trackedOrigins = this.trackedOrigins;\n\t\tthis._defaultOpts = opts;\n\t\t/**\n\t\t * @type {Array<Y.UndoManager>}\n\t\t */\n\t\tthis.undoStack = [];\n\t\t/**\n\t\t * @type {Array<Y.UndoManager>}\n\t\t */\n\t\tthis.redoStack = [];\n\t\tthis.addToScope( typeScope );\n\t}\n\n\t/**\n\t * @param {Array<Y.AbstractType<any>> | Y.AbstractType<any>} ytypes\n\t */\n\taddToScope( ytypes ) {\n\t\tytypes = array.isArray( ytypes ) ? ytypes : [ ytypes ];\n\t\tytypes.forEach( ( ytype ) => {\n\t\t\tconst ydoc = /** @type {Y.Doc} */ ( ytype.doc );\n\t\t\tconst um = map.setIfUndefined( this.docs, ydoc, () => {\n\t\t\t\tconst um = new Y.UndoManager( [ ytype ], this._defaultOpts );\n\t\t\t\tum.on(\n\t\t\t\t\t'stack-cleared',\n\t\t\t\t\t/** @param {any} opts */ ( {\n\t\t\t\t\t\tundoStackCleared,\n\t\t\t\t\t\tredoStackCleared,\n\t\t\t\t\t} ) => {\n\t\t\t\t\t\tthis.clear( undoStackCleared, redoStackCleared );\n\t\t\t\t\t}\n\t\t\t\t);\n\t\t\t\tydoc.on( 'destroy', () => {\n\t\t\t\t\tthis.docs.delete( ydoc );\n\t\t\t\t\tthis.undoStack = this.undoStack.filter(\n\t\t\t\t\t\t( um ) => um.doc !== ydoc\n\t\t\t\t\t);\n\t\t\t\t\tthis.redoStack = this.redoStack.filter(\n\t\t\t\t\t\t( um ) => um.doc !== ydoc\n\t\t\t\t\t);\n\t\t\t\t} );\n\t\t\t\tum.on(\n\t\t\t\t\t'stack-item-added',\n\t\t\t\t\t/** @param {any} change */ ( change ) => {\n\t\t\t\t\t\tconst stack =\n\t\t\t\t\t\t\tchange.type === 'undo'\n\t\t\t\t\t\t\t\t? this.undoStack\n\t\t\t\t\t\t\t\t: this.redoStack;\n\t\t\t\t\t\tstack.push( um );\n\t\t\t\t\t\tthis.emit( 'stack-item-added', [\n\t\t\t\t\t\t\t{ ...change, ydoc: ydoc },\n\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t] );\n\t\t\t\t\t}\n\t\t\t\t);\n\t\t\t\tum.on(\n\t\t\t\t\t'stack-item-updated',\n\t\t\t\t\t/** @param {any} change */ ( change ) => {\n\t\t\t\t\t\tthis.emit( 'stack-item-updated', [\n\t\t\t\t\t\t\t{ ...change, ydoc },\n\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t] );\n\t\t\t\t\t}\n\t\t\t\t);\n\t\t\t\tum.on(\n\t\t\t\t\t'stack-item-popped',\n\t\t\t\t\t/** @param {any} change */ ( change ) => {\n\t\t\t\t\t\tthis.emit( 'stack-item-popped', [\n\t\t\t\t\t\t\t{ ...change, ydoc },\n\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t] );\n\t\t\t\t\t}\n\t\t\t\t);\n\t\t\t\t// if doc is destroyed\n\t\t\t\t// emit events from um to multium\n\t\t\t\treturn um;\n\t\t\t} );\n\t\t\t/* c8 ignore next 4 */\n\t\t\tif ( um.scope.every( ( yt ) => yt !== ytype ) ) {\n\t\t\t\tum.scope.push( ytype );\n\t\t\t}\n\t\t} );\n\t}\n\n\t/**\n\t * @param {any} origin\n\t */\n\t/* c8 ignore next 3 */\n\taddTrackedOrigin( origin ) {\n\t\tthis.trackedOrigins.add( origin );\n\t}\n\n\t/**\n\t * @param {any} origin\n\t */\n\t/* c8 ignore next 3 */\n\tremoveTrackedOrigin( origin ) {\n\t\tthis.trackedOrigins.delete( origin );\n\t}\n\n\t/**\n\t * Undo last changes on type.\n\t *\n\t * @return {any?} Returns StackItem if a change was applied\n\t */\n\tundo() {\n\t\treturn popStackItem( this, 'undo' );\n\t}\n\n\t/**\n\t * Redo last undo operation.\n\t *\n\t * @return {any?} Returns StackItem if a change was applied\n\t */\n\tredo() {\n\t\treturn popStackItem( this, 'redo' );\n\t}\n\n\tclear( clearUndoStack = true, clearRedoStack = true ) {\n\t\t/* c8 ignore next */\n\t\tif (\n\t\t\t( clearUndoStack && this.canUndo() ) ||\n\t\t\t( clearRedoStack && this.canRedo() )\n\t\t) {\n\t\t\tthis.docs.forEach( ( um ) => {\n\t\t\t\t/* c8 ignore next */\n\t\t\t\tclearUndoStack && ( this.undoStack = [] );\n\t\t\t\t/* c8 ignore next */\n\t\t\t\tclearRedoStack && ( this.redoStack = [] );\n\t\t\t\tum.clear( clearUndoStack, clearRedoStack );\n\t\t\t} );\n\t\t\tthis.emit( 'stack-cleared', [\n\t\t\t\t{\n\t\t\t\t\tundoStackCleared: clearUndoStack,\n\t\t\t\t\tredoStackCleared: clearRedoStack,\n\t\t\t\t},\n\t\t\t] );\n\t\t}\n\t}\n\n\t/* c8 ignore next 5 */\n\tstopCapturing() {\n\t\tthis.docs.forEach( ( um ) => {\n\t\t\tum.stopCapturing();\n\t\t} );\n\t}\n\n\t/**\n\t * Are undo steps available?\n\t *\n\t * @return {boolean} `true` if undo is possible\n\t */\n\tcanUndo() {\n\t\treturn this.undoStack.length > 0;\n\t}\n\n\t/**\n\t * Are redo steps available?\n\t *\n\t * @return {boolean} `true` if redo is possible\n\t */\n\tcanRedo() {\n\t\treturn this.redoStack.length > 0;\n\t}\n\n\tdestroy() {\n\t\tthis.docs.forEach( ( um ) => um.destroy() );\n\t\tsuper.destroy();\n\t}\n}\n\n/**\n * @todo remove\n * @deprecated Use YMultiDocUndoManager instead\n */\nexport const MultiDocUndoManager = YMultiDocUndoManager;\n"],
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