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collaboration.ts
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collaboration.ts
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import { Extension } from '@tiptap/core'
import { EditorView } from '@tiptap/pm/view'
import {
redo,
undo,
ySyncPlugin,
yUndoPlugin,
yUndoPluginKey,
} from 'y-prosemirror'
import { UndoManager } from 'yjs'
type YSyncOpts = Parameters<typeof ySyncPlugin>[1]
declare module '@tiptap/core' {
interface Commands<ReturnType> {
collaboration: {
/**
* Undo recent changes
* @example editor.commands.undo()
*/
undo: () => ReturnType,
/**
* Reapply reverted changes
* @example editor.commands.redo()
*/
redo: () => ReturnType,
}
}
}
export interface CollaborationOptions {
/**
* An initialized Y.js document.
* @example new Y.Doc()
*/
document: any,
/**
* Name of a Y.js fragment, can be changed to sync multiple fields with one Y.js document.
* @default 'default'
* @example 'my-custom-field'
*/
field: string,
/**
* A raw Y.js fragment, can be used instead of `document` and `field`.
* @example new Y.Doc().getXmlFragment('body')
*/
fragment: any,
/**
* Fired when the content from Yjs is initially rendered to Tiptap.
*/
onFirstRender?: () => void,
ySyncOptions?: YSyncOpts
}
/**
* This extension allows you to collaborate with others in real-time.
* @see https://tiptap.dev/api/extensions/collaboration
*/
export const Collaboration = Extension.create<CollaborationOptions>({
name: 'collaboration',
priority: 1000,
addOptions() {
return {
document: null,
field: 'default',
fragment: null,
}
},
onCreate() {
if (this.editor.extensionManager.extensions.find(extension => extension.name === 'history')) {
console.warn('[tiptap warn]: "@tiptap/extension-collaboration" comes with its own history support and is not compatible with "@tiptap/extension-history".')
}
},
addCommands() {
return {
undo: () => ({ tr, state, dispatch }) => {
tr.setMeta('preventDispatch', true)
const undoManager: UndoManager = yUndoPluginKey.getState(state).undoManager
if (undoManager.undoStack.length === 0) {
return false
}
if (!dispatch) {
return true
}
return undo(state)
},
redo: () => ({ tr, state, dispatch }) => {
tr.setMeta('preventDispatch', true)
const undoManager: UndoManager = yUndoPluginKey.getState(state).undoManager
if (undoManager.redoStack.length === 0) {
return false
}
if (!dispatch) {
return true
}
return redo(state)
},
}
},
addKeyboardShortcuts() {
return {
'Mod-z': () => this.editor.commands.undo(),
'Mod-y': () => this.editor.commands.redo(),
'Shift-Mod-z': () => this.editor.commands.redo(),
}
},
addProseMirrorPlugins() {
const fragment = this.options.fragment
? this.options.fragment
: this.options.document.getXmlFragment(this.options.field)
// Quick fix until there is an official implementation (thanks to @hamflx).
// See https://github.com/yjs/y-prosemirror/issues/114 and https://github.com/yjs/y-prosemirror/issues/102
const yUndoPluginInstance = yUndoPlugin()
const originalUndoPluginView = yUndoPluginInstance.spec.view
yUndoPluginInstance.spec.view = (view: EditorView) => {
const { undoManager } = yUndoPluginKey.getState(view.state)
if (undoManager.restore) {
undoManager.restore()
// eslint-disable-next-line
undoManager.restore = () => {}
}
const viewRet = originalUndoPluginView ? originalUndoPluginView(view) : undefined
return {
destroy: () => {
const hasUndoManSelf = undoManager.trackedOrigins.has(undoManager)
// eslint-disable-next-line
const observers = undoManager._observers
undoManager.restore = () => {
if (hasUndoManSelf) {
undoManager.trackedOrigins.add(undoManager)
}
undoManager.doc.on('afterTransaction', undoManager.afterTransactionHandler)
// eslint-disable-next-line
undoManager._observers = observers
}
if (viewRet?.destroy) {
viewRet.destroy()
}
},
}
}
const ySyncPluginOptions: YSyncOpts = {
...this.options.ySyncOptions,
onFirstRender: this.options.onFirstRender,
}
const ySyncPluginInstance = ySyncPlugin(fragment, ySyncPluginOptions)
return [ySyncPluginInstance, yUndoPluginInstance]
},
})