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import React from "react";
import { EditorView } from "prosemirror-view";
import { EditorState } from "prosemirror-state";
export interface ProseMirrorEditorViewProps {
/* EditorState instance to use. */
editorState: EditorState;
/* Called when EditorView produces new EditorState. */
onEditorState: (editorState: EditorState) => any;
}
/**
* This wraps ProseMirror's EditorView into React component.
* This code was found on https://discuss.prosemirror.net/t/using-with-react/904
*/
export class ProseMirrorEditorView extends React.Component<ProseMirrorEditorViewProps> {
private _editorView?: EditorView;
_createEditorView = (element: HTMLDivElement | null) => {
if (element !== null) {
this._editorView = new EditorView(element, {
state: this.props.editorState,
dispatchTransaction: this.dispatchTransaction,
});
}
}
dispatchTransaction = (tx: any) => {
// In case EditorView makes any modification to a state we funnel those
// modifications up to the parent and apply to the EditorView itself.
const editorState = this.props.editorState.apply(tx);
if (this._editorView) {
this._editorView.updateState(editorState);
}
this.props.onEditorState(editorState);
}
focus() {
if (this._editorView) {
this._editorView.focus();
}
}
componentWillReceiveProps(nextProps: { editorState: EditorState<any>; }) {
// In case we receive new EditorState through props — we apply it to the
// EditorView instance.
if (this._editorView) {
if (nextProps.editorState !== this.props.editorState) {
this._editorView.updateState(nextProps.editorState);
}
}
}
componentWillUnmount() {
if (this._editorView) {
this._editorView.destroy();
}
}
shouldComponentUpdate() {
// Note that EditorView manages its DOM itself so we'd ratrher don't mess
// with it.
return false;
}
render() {
// Render just an empty div which is then used as a container for an
// EditorView instance.
return (
<div ref={this._createEditorView} />
);
}
}
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