mirror of
https://github.com/vector-im/element-web.git
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98 lines
3.3 KiB
TypeScript
98 lines
3.3 KiB
TypeScript
/*
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Copyright 2015-2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React, { ComponentType } from "react";
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import * as sdk from './index';
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import { _t } from './languageHandler';
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import { IDialogProps } from "./components/views/dialogs/IDialogProps";
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type AsyncImport<T> = { default: T };
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interface IProps extends IDialogProps {
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// A promise which resolves with the real component
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prom: Promise<ComponentType | AsyncImport<ComponentType>>;
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}
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interface IState {
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component?: ComponentType;
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error?: Error;
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}
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/**
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* Wrap an asynchronous loader function with a react component which shows a
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* spinner until the real component loads.
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*/
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export default class AsyncWrapper extends React.Component<IProps, IState> {
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private unmounted = false;
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public state = {
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component: null,
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error: null,
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};
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componentDidMount() {
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// XXX: temporary logging to try to diagnose
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// https://github.com/vector-im/element-web/issues/3148
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console.log('Starting load of AsyncWrapper for modal');
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this.props.prom.then((result) => {
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if (this.unmounted) return;
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// Take the 'default' member if it's there, then we support
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// passing in just an import()ed module, since ES6 async import
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// always returns a module *namespace*.
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const component = (result as AsyncImport<ComponentType>).default
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? (result as AsyncImport<ComponentType>).default
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: result as ComponentType;
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this.setState({ component });
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}).catch((e) => {
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console.warn('AsyncWrapper promise failed', e);
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this.setState({ error: e });
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});
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}
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componentWillUnmount() {
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this.unmounted = true;
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}
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private onWrapperCancelClick = () => {
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this.props.onFinished(false);
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};
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render() {
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if (this.state.component) {
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const Component = this.state.component;
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return <Component {...this.props} />;
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} else if (this.state.error) {
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// FIXME: Using an import will result in test failures
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const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
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const DialogButtons = sdk.getComponent('views.elements.DialogButtons');
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return <BaseDialog onFinished={this.props.onFinished} title={_t("Error")}>
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{ _t("Unable to load! Check your network connectivity and try again.") }
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<DialogButtons primaryButton={_t("Dismiss")}
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onPrimaryButtonClick={this.onWrapperCancelClick}
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hasCancel={false}
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/>
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</BaseDialog>;
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} else {
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// show a spinner until the component is loaded.
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const Spinner = sdk.getComponent("elements.Spinner");
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return <Spinner />;
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}
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}
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}
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