Some fixes and optimizations in sandboxes.

Start of a sandbox for GrapeJS

client/src/lib/sandboxed-grapesjs.js

@@ -0,0 +1,73 @@
+'use strict';
+
+import React, {Component} from 'react';
+import {translate} from 'react-i18next';
+import PropTypes
+    from "prop-types";
+import styles
+    from "./sandboxed-grapesjs.scss";
+
+import {UntrustedContentHost} from './untrusted';
+import {Icon} from "./bootstrap-components";
+import {getTrustedUrl} from "./urls";
+
+@translate(null, { withRef: true })
+export class GrapesJSHost extends Component {
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            fullscreen: false
+        }
+    }
+
+    static propTypes = {
+        entityTypeId: PropTypes.string,
+        entity: PropTypes.object,
+        initialModel: PropTypes.object,
+        title: PropTypes.string,
+        onFullscreenAsync: PropTypes.func
+    }
+
+    async toggleFullscreenAsync() {
+        const fullscreen = !this.state.fullscreen;
+        this.setState({
+            fullscreen
+        });
+        await this.props.onFullscreenAsync(fullscreen);
+    }
+
+    async exportState() {
+        return await this.contentNode.ask('exportState');
+    }
+
+    render() {
+        const t = this.props.t;
+
+        const editorData = {
+            entityTypeId: this.props.entityTypeId,
+            entityId: this.props.entity.id,
+            initialModel: this.props.initialModel
+        };
+
+        const tokenData = {
+            entityTypeId: this.props.entityTypeId,
+            entityId: this.props.entity.id
+        };
+
+        return (
+            <div className={this.state.fullscreen ? styles.editorFullscreen : styles.editor}>
+                <div className={styles.navbar}>
+                    {this.state.fullscreen && <img className={styles.logo} src={getTrustedUrl('static/mailtrain-notext.png')}/>}
+                    <div className={styles.title}>{this.props.title}</div>
+                    <a className={styles.btn} onClick={::this.toggleFullscreenAsync}><Icon icon="fullscreen"/></a>
+                </div>
+                <UntrustedContentHost ref={node => this.contentNode = node} className={styles.host} singleToken={true} contentProps={editorData} contentSrc="grapesjs/editor" tokenMethod="grapesjs" tokenParams={tokenData}/>
+            </div>
+        );
+    }
+}
+
+GrapesJSHost.prototype.exportState = async function() {
+    return await this.getWrappedInstance().exportState();
+};