import React from 'react'; import { pick } from '@utils'; import withGGEditorContext from '@common/context/GGEditorContext/withGGEditorContext'; import Item from './Item'; class ItemPanel extends React.Component { page = null; constructor(props) { super(props); this.bindEvent(); } handleMouseUp = () => { this.page.cancelAdd(); } bindEvent() { const { onAfterAddPage } = this.props; onAfterAddPage(({ page }) => { this.page = page; document.addEventListener('mouseup', this.handleMouseUp); }); } componentWillUnmount() { document.removeEventListener('mouseup', this.handleMouseUp); } render() { const { children } = this.props; return (