Rename a few things, make hosting signup config an object

src/components/structures/HostingProviderDialog.tsx

@@ -1,99 +0,0 @@
-/*
-Copyright 2020 Element
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import * as React from "react";
-import SdkConfig from "../../SdkConfig";
-import {MatrixClientPeg} from "../../MatrixClientPeg";
-
-interface IProps {}
-
-interface IState {
-    error: string,
-}
-
-export default class HostingProviderDialog extends React.PureComponent<IProps, IState> {
-    iframeRef;
-    hostingSignupUrl: string;
-
-    constructor(props: IProps) {
-        super(props);
-
-        this.state = {
-            error: null,
-        };
-
-        this.iframeRef = React.createRef();
-        this.hostingSignupUrl = SdkConfig.get().hosting_signup_iframe;
-    }
-
-    private messageHandler = (message) => {
-        if (!this.hostingSignupUrl.startsWith(message.origin)) {
-            return;
-        }
-
-        switch (message.data.action) {
-            case 'openid_credentials_request':
-                // noinspection JSIgnoredPromiseFromCall
-                this.fetchOpenIDToken();
-                break;
-        }
-    }
-
-    private sendMessage = (message) => {
-        this.iframeRef.contentWindow.postMessage(
-            message,
-            this.hostingSignupUrl,
-        )
-    }
-
-    private async fetchOpenIDToken() {
-        const token = await MatrixClientPeg.get().getOpenIdToken();
-        if (token && token.access_token) {
-            this.sendMessage({
-                action: 'openid_credentials',
-                tokenData: token,
-            });
-        } else {
-            this.setState({
-                error: "Failed to connect to your homeserver. Please close this dialog and try again.",
-            });
-        }
-    }
-
-    public componentDidMount() {
-        window.addEventListener("message", this.messageHandler);
-    }
-
-    public componentWillUnmount() {
-        window.removeEventListener("message", this.messageHandler);
-    }
-
-    public render(): React.ReactNode {
-        return (
-            <div className="mx_HostingProviderDialog_container">
-                <iframe
-                    src={this.hostingSignupUrl}
-                    ref={ref => this.iframeRef = ref}
-                />
-                {this.state.error &&
-                    <div>
-                        {this.state.error}
-                    </div>
-                }
-            </div>
-        );
-    }
-}