ngx-editor
Version:
Rich Text Editor for angular using ProseMirror
107 lines • 13.1 kB
JavaScript
import { EditorState } from 'prosemirror-state';
import { EditorView } from 'prosemirror-view';
import { Subject } from 'rxjs';
import { isNil } from 'ngx-editor/utils';
import EditorCommands from './EditorCommands';
import defautlSchema from './schema';
import { parseContent } from './parsers';
import getDefaultPlugins from './defaultPlugins';
const defaultFeatures = {
linkOnPaste: true,
resizeImage: true,
};
const DEFAULT_OPTIONS = {
content: null,
history: true,
keyboardShortcuts: true,
inputRules: true,
schema: defautlSchema,
plugins: [],
nodeViews: {},
attributes: {},
features: defaultFeatures,
};
class Editor {
constructor(options = DEFAULT_OPTIONS) {
this.valueChangesSubject = new Subject();
this.updateSubject = new Subject();
this.options = { ...DEFAULT_OPTIONS, ...options };
this.createEditor();
}
get valueChanges() {
return this.valueChangesSubject.asObservable();
}
get update() {
return this.updateSubject.asObservable();
}
get schema() {
return this.options.schema || defautlSchema;
}
get commands() {
return new EditorCommands(this.view);
}
get features() {
return { ...defaultFeatures, ...this.options.features };
}
handleTransactions(tr) {
const state = this.view.state.apply(tr);
this.view.updateState(state);
this.updateSubject.next(this.view);
if (!tr.docChanged && !tr.getMeta('FORCE_EMIT')) {
return;
}
const json = state.doc.toJSON();
this.valueChangesSubject.next(json);
}
createEditor() {
const { options, schema } = this;
const { content = null, nodeViews } = options;
const { history = true, keyboardShortcuts = true, inputRules = true } = options;
const doc = parseContent(content, schema);
const plugins = options.plugins ?? [];
const attributes = options.attributes ?? {};
const defaultPlugins = getDefaultPlugins(schema, {
history,
keyboardShortcuts,
inputRules,
});
this.view = new EditorView(null, {
state: EditorState.create({
doc,
schema,
plugins: [...defaultPlugins, ...plugins],
}),
nodeViews,
dispatchTransaction: this.handleTransactions.bind(this),
attributes,
});
}
setContent(content) {
if (isNil(content)) {
return;
}
const { state } = this.view;
const { tr, doc } = state;
const newDoc = parseContent(content, this.schema);
tr.replaceWith(0, state.doc.content.size, newDoc);
// don't emit if both content is same
if (doc.eq(tr.doc)) {
return;
}
if (!tr.docChanged) {
return;
}
this.view.dispatch(tr);
}
registerPlugin(plugin) {
const { state } = this.view;
const plugins = [...state.plugins, plugin];
const newState = state.reconfigure({ plugins });
this.view.updateState(newState);
}
destroy() {
this.view.destroy();
}
}
export default Editor;
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{ Schema } from 'prosemirror-model';\nimport { EditorState, Plugin, Transaction } from 'prosemirror-state';\nimport { EditorProps, EditorView } from 'prosemirror-view';\nimport { Observable, Subject } from 'rxjs';\n\nimport { isNil } from 'ngx-editor/utils';\n\nimport EditorCommands from './EditorCommands';\nimport defautlSchema from './schema';\nimport { parseContent } from './parsers';\nimport getDefaultPlugins from './defaultPlugins';\n\ntype JSONDoc = Record<string, any>;\ntype Content = string | null | JSONDoc;\n\ninterface Options {\n  content?: Content;\n  history?: boolean;\n  keyboardShortcuts?: boolean;\n  inputRules?: boolean;\n  schema?: Schema;\n  plugins?: Plugin[];\n  nodeViews?: EditorProps['nodeViews'];\n  attributes?: Record<string, string>;\n  features?: EditorFeatures;\n}\n\ninterface EditorFeatures {\n  linkOnPaste?: boolean;\n  resizeImage?: boolean;\n}\n\nconst defaultFeatures = {\n  linkOnPaste: true,\n  resizeImage: true,\n};\n\nconst DEFAULT_OPTIONS: Options = {\n  content: null,\n  history: true,\n  keyboardShortcuts: true,\n  inputRules: true,\n  schema: defautlSchema,\n  plugins: [],\n  nodeViews: {},\n  attributes: {},\n  features: defaultFeatures,\n};\n\nclass Editor {\n  private options: Options;\n  view: EditorView;\n\n  constructor(options: Options = DEFAULT_OPTIONS) {\n    this.options = { ...DEFAULT_OPTIONS, ...options };\n    this.createEditor();\n  }\n\n  private valueChangesSubject = new Subject<JSONDoc>();\n  private updateSubject = new Subject<EditorView>();\n\n  get valueChanges(): Observable<JSONDoc> {\n    return this.valueChangesSubject.asObservable();\n  }\n\n  get update(): Observable<EditorView> {\n    return this.updateSubject.asObservable();\n  }\n\n  get schema(): Schema {\n    return this.options.schema || defautlSchema;\n  }\n\n  get commands(): EditorCommands {\n    return new EditorCommands(this.view);\n  }\n\n  get features(): EditorFeatures {\n    return { ...defaultFeatures, ...this.options.features };\n  }\n\n  private handleTransactions(tr: Transaction): void {\n    const state = this.view.state.apply(tr);\n    this.view.updateState(state);\n\n    this.updateSubject.next(this.view);\n\n    if (!tr.docChanged && !tr.getMeta('FORCE_EMIT')) {\n      return;\n    }\n\n    const json = state.doc.toJSON();\n    this.valueChangesSubject.next(json);\n  }\n\n  private createEditor(): void {\n    const { options, schema } = this;\n    const { content = null, nodeViews } = options;\n    const { history = true, keyboardShortcuts = true, inputRules = true } = options;\n\n    const doc = parseContent(content, schema);\n\n    const plugins: Plugin[] = options.plugins ?? [];\n    const attributes: Record<string, string> = options.attributes ?? {};\n\n    const defaultPlugins = getDefaultPlugins(schema, {\n      history,\n      keyboardShortcuts,\n      inputRules,\n    });\n\n    this.view = new EditorView(null, {\n      state: EditorState.create({\n        doc,\n        schema,\n        plugins: [...defaultPlugins, ...plugins],\n      }),\n      nodeViews,\n      dispatchTransaction: this.handleTransactions.bind(this),\n      attributes,\n    });\n  }\n\n  setContent(content: Content): void {\n    if (isNil(content)) {\n      return;\n    }\n\n    const { state } = this.view;\n    const { tr, doc } = state;\n\n    const newDoc = parseContent(content, this.schema);\n\n    tr.replaceWith(0, state.doc.content.size, newDoc);\n\n    // don't emit if both content is same\n    if (doc.eq(tr.doc)) {\n      return;\n    }\n\n    if (!tr.docChanged) {\n      return;\n    }\n\n    this.view.dispatch(tr);\n  }\n\n  registerPlugin(plugin: Plugin): void {\n    const { state } = this.view;\n    const plugins = [...state.plugins, plugin];\n\n    const newState = state.reconfigure({ plugins });\n    this.view.updateState(newState);\n  }\n\n  destroy(): void {\n    this.view.destroy();\n  }\n}\n\nexport default Editor;\n"]}