ng-prosemirror-adapter

v0.0.6

Published

10 months ago

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ousc

Angular adapter for ProseMirror, only supports Angular 17+.

More detail please move to prosemirror-adapter by @Saul-Mirone.This project is just adding support for Angular.

Example

You can run this example by:

git clone https://github.com/ousc/ng-prosemirror-adapter.git
cd ng-prosemirror-adapter
npm install
npm run start

Online Demo

https://ousc.github.io/ng-prosemirror-adapter

Getting Started

Install the package

npm install ng-prosemirror-adapter

Wrap your component with provider

<ng-prosemirror-adapter-provider>
  <YourAwesomeEditor/>
</ng-prosemirror-adapter-provider>

Play with node view

In this section we will implement a node view for paragraph node.

Build component for node view

import {Component} from '@angular/core';
import {NgProsemirrorNode} from 'ng-prosemirror-adapter';


@Component({
  selector: 'paragraph',
  template: `
      <div role="presentation" [class.selected]="selected"></div>
  `,
  styles: [`
    :host .selected {
      outline: blue solid 1px;
    }
  `],
  standalone: true
})
export class Paragraph extends NgProsemirrorNode {}

Bind node view components with prosemirror

import {AfterViewInit, Component, ElementRef, forwardRef, ViewChild} from '@angular/core';
import {Paragraph} from "../paragraph.component";
import {NgProsemirrorEditor} from 'ng-prosemirror-adapter';

@Component({
  selector: 'editor',
  standalone: true,
  template: `<div class="editor" #editorRef></div>`,
  providers: [{provide: NgProsemirrorEditor, useExisting: forwardRef(() => EditorComponent)}],
})
export class EditorComponent extends NgProsemirrorEditor implements AfterViewInit {
  @ViewChild('editorRef') editorRef: ElementRef;

  async ngAfterViewInit(): Promise<void> {
    const element = this.editorRef.nativeElement;
    if (!element || element.firstChild)
      return

    const editorView = new EditorView(element, {
      state: YourProsemirrorEditorState,
      nodeViews: {
        paragraph: this.provider.createNodeView({
          component: Paragraph,
          as: 'div',
          contentAs: 'p',
        }),
      }
    })
  }
}

🚀 Congratulations! You have built your first angular node view with prosemirror-adapter.

Play with plugin view

In this section we will implement a plugin view that will display the size of the document.

Build component for plugin view

import {Component} from '@angular/core';
import {NgProsemirrorPlugin} from 'ng-prosemirror-adapter';

@Component({
  selector: 'size',
  template: `<div>Size for document: {{ size }}</div>`,
  styles: [],
  standalone: true
})
export class Size extends NgProsemirrorPlugin {

  get size() {
    return this.state?.doc?.nodeSize
  }
}

Bind plugin view components with prosemirror

import {AfterViewInit, Component, ElementRef, forwardRef, ViewChild} from '@angular/core';
import {Size} from "../size.component";
import {NgProsemirrorEditor} from 'ng-prosemirror-adapter';

@Component({
  selector: 'editor',
  standalone: true,
  template: `<div class="editor" #editorRef></div>`,
  providers: [{provide: NgProsemirrorEditor, useExisting: forwardRef(() => EditorComponent)}],
})
export class EditorComponent extends NgProsemirrorEditor implements AfterViewInit {
  @ViewChild('editorRef') editorRef: ElementRef;

  async ngAfterViewInit(): Promise<void> {
    const element = this.editorRef.nativeElement;
    if (!element || element.firstChild)
      return

    const editorView = new EditorView(element, {
      state: YourProsemirrorEditorState,
      plugins: [
        new Plugin({
          view: await this.provider.createPluginView({ component: Size }),
        }),
      ]
    })
  }
}

🚀 Congratulations! You have built your first angular plugin view with prosemirror-adapter.

Play with widget view

In this section we will implement a widget view that will add hashes for heading when selected.

Build component for widget decoration view

import {Component} from '@angular/core';
import {NgProsemirrorWidget} from 'ng-prosemirror-adapter';

@Component({
  selector: 'hashes',
  template: `
      <span class="hash">{{ hashes }}</span>`,
  styles: [`
    .hash {
      color: blue;
      margin-right: 6px;
    }`],
  standalone: true
})
export class Hashes extends NgProsemirrorWidget {
  get level() {
    return this.spec?.['level'];
  }

  get hashes() {
    return Array(this.level || 0).fill('#').join('');
  }
}

Bind widget view components with prosemirror

import {AfterViewInit, Component, ElementRef, forwardRef, ViewChild} from '@angular/core';
import {Hashes} from "../hashes.component";
import {NgProsemirrorEditor} from 'ng-prosemirror-adapter';
import {Plugin} from "prosemirror-state";

@Component({
  selector: 'editor',
  standalone: true,
  template: `<div class="editor" #editorRef></div>`,
  providers: [{provide: NgProsemirrorEditor, useExisting: forwardRef(() => EditorComponent)}],
})
export class EditorComponent extends NgProsemirrorEditor implements AfterViewInit {
  @ViewChild('editorRef') editorRef: ElementRef;

  async ngAfterViewInit(): Promise<void> {
    const element = this.editorRef.nativeElement;
    if (!element || element.firstChild)
      return

    const editorView = new EditorView(element, {
      state: YourProsemirrorEditorState,
      plugins: [
        new Plugin({
          props: {
            decorations: (state) => {
              const getHashWidget = this.provider.createWidgetView({
                as: 'i',
                component: Hashes,
              })
              const {$from} = state.selection
              const node = $from.node()
              if (node.type.name !== 'heading')
                return DecorationSet.empty

              const widget = getHashWidget($from.before() + 1, {
                side: -1,
                level: node.attrs['level'],
              })
              return DecorationSet.create(state.doc, [widget])
            },
          },
        }),
      ]
    })
  }
}

🚀 Congratulations! You have built your first angular widget view with prosemirror-adapter.

API

if you properly wrap your component with NgProsemirrorAdapterProvider, and extends NgProsemirrorEditor or NgProsemirrorNode or NgProsemirrorPlugin or NgProsemirrorWidget, you can use this.provider to access the following APIs. else you can use @ViewChild to access the NgProsemirrorAdapterProvider instance and use the following APIs.

NgProsemirrorNode API

NgProsemirrorEditor.provider.createNodeView: NodeViewFactory => (options: NgNodeViewUserOptions) => NodeViewConstructor

type NgNodeViewUserOptions = {
  component: Type<NgProsemirrorNode>
  as?: string | HTMLElement
  contentAs?: string | HTMLElement
  update?: (node: Node, decorations: readonly Decoration[], innerDecorations: DecorationSource) => boolean | void
  ignoreMutation?: (mutation: MutationRecord) => boolean | void
  selectNode?: () => void
  deselectNode?: () => void
  setSelection?: (anchor: number, head: number, root: Document | ShadowRoot) => void
  stopEvent?: (event: Event) => boolean
  destroy?: () => void

  // Additional
  onUpdate?: () => void
  inputs?: {
    [key: string]: any
  },
  key?: string
}

type NodeViewFactory = (options: NgNodeViewUserOptions) => NodeViewConstructor

NgProsemirrorNode.context: NodeViewContext

interface NodeViewContext {
  // won't change
  contentRef: NodeViewContentRef
  view: EditorView
  getPos: () => number | undefined
  setAttrs: (attrs: Attrs) => void

  // changes between updates
  node: Node
  selected: boolean
  decorations: readonly Decoration[]
  innerDecorations: DecorationSource
}

type NodeViewContentRef = (node: HTMLElement | null) => void

NgProsemirrorNode.view: EditorView

NgProsemirrorNode.contentRef: NodeViewContentRef

NgProsemirrorNode.getPos: () => number | undefined

NgProsemirrorNode.setAttrs: (attrs: Attrs) => void

NgProsemirrorNode.node: Node

NgProsemirrorNode.selected: boolean

NgProsemirrorNode.decorations: readonly Decoration[]

NgProsemirrorNode.innerDecorations: DecorationSource

NgProsemirrorPlugin API

NgProsemirrorEditor.provider.createPluginView: NodeViewFactory => (options: NgNodeViewUserOptions) => NodeViewConstructor

export type NgPluginViewUserOptions = {
  component: Type<NgProsemirrorPlugin>
  root?: (viewDOM: HTMLElement) => HTMLElement
  update?: (view: EditorView, prevState: EditorState) => void
  destroy?: () => void,
  inputs?: {
    [key: string]: any
  },
  key?: string
}

export type PluginViewFactory = (options: NgPluginViewUserOptions) => Promise<PluginViewSpec>

NgProsemirrorPlugin.context: PluginViewContext

export interface PluginViewContext {
  view: EditorView
  prevState: EditorState
}

NgProsemirrorPlugin.view: EditorView

NgProsemirrorPlugin.state: EditorState

NgProsemirrorPlugin.prevState: EditorState

NgProsemirrorWidget API

NgProsemirrorEditor.provider.createWidgetView: WidgetViewFactory => (options: NgWidgetViewUserOptions) => WidgetViewConstructor

export type NgWidgetUserOptions = {
  as: string | HTMLElement
  component: Type<NgProsemirrorWidget>,
  inputs?: {
    [key: string]: any
  },
  key?: string
}

export type WidgetViewFactory = (options: NgWidgetUserOptions) => WidgetDecorationFactory

NgProsemirrorWidget.context: WidgetViewContext

export interface WidgetViewContext {
  view: EditorView
  getPos: () => number | undefined
  spec?: WidgetDecorationSpec
}