First stage of host signup flow now sits here

Need to make things configurable, image and text for the first step should be configurable.

Also missing privacy related words, though they should be configurable too.

res/css/views/dialogs/_HostSignupDialog.scss

@@ -14,22 +14,27 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-.mx_HostSignupDialog .mx_Dialog {
-    height: 66%;
-    min-width: 50%;
-}
-
 .mx_HostSignupBaseDialog {
-    height: 100%;
-}
+    max-height: 600px;
+    width: 580px;
 
-.mx_HostSignupDialog_container {
-    height: 90%;
+    .mx_HostSignupDialog_container {
+        height: 90%;
 
-    iframe {
-        width: 100%;
-        height: 100%;
-        border: none;
-        background-color: #fff;
+        .mx_HostSignupDialog_info {
+            text-align: center;
+
+            .mx_HostSignupDialog_content {
+                margin-top: 64px;
+                margin-bottom: 45px;
+            }
+        }
+
+        iframe {
+            width: 100%;
+            height: 100%;
+            border: none;
+            background-color: #fff;
+        }
     }
 }

src/components/views/dialogs/HostSignupDialog.tsx

@@ -31,6 +31,7 @@ interface IProps {
 interface IState {
     completed: boolean;
     error: string;
+    loadIframe: boolean;
 }
 
 export default class HostSignupDialog extends React.PureComponent<IProps, IState> {
@@ -43,33 +44,19 @@ export default class HostSignupDialog extends React.PureComponent<IProps, IState
         this.state = {
             completed: false,
             error: null,
+            loadIframe: false,
         };
 
         this.hostSignupSetupUrl = SdkConfig.get().host_signup.url;
     }
 
-    private messageHandler = (message: IPostmessage) => {
+    private messageHandler = async (message: IPostmessage) => {
         if (!this.hostSignupSetupUrl.startsWith(message.origin)) {
             return;
         }
         switch (message.data.action) {
             case PostmessageAction.HostSignupAccountDetailsRequest:
-                Modal.createDialog(
-                    QuestionDialog,
-                    {
-                        title: _t("Confirm Account Data Transfer"),
-                        description: _t(
-                            "Please accept transfer of data to the host signup wizard to continue. " +
-                            "The setup wizard will be able to access your account for the duration of the " +
-                            "setup process."),
-                        button: _t("Accept"),
-                        onFinished: result => {
-                            if (result) {
-                                return this.sendAccountDetails();
-                            }
-                        },
-                    },
-                );
+                await this.sendAccountDetails();
                 break;
             case PostmessageAction.SetupComplete:
                 // Set as completed but let the user close the modal themselves
@@ -132,8 +119,11 @@ export default class HostSignupDialog extends React.PureComponent<IProps, IState
         });
     }
 
-    public componentDidMount() {
+    private loadIframe = () => {
         window.addEventListener("message", this.messageHandler);
+        this.setState({
+            loadIframe: true,
+        });
     }
 
     public componentWillUnmount() {
@@ -145,16 +135,39 @@ export default class HostSignupDialog extends React.PureComponent<IProps, IState
             <BaseDialog
                 className="mx_HostSignupBaseDialog"
                 onFinished={this.onFinished}
-                title={_t("Set up your own personal Element host")}
+                title=""
                 hasCancel={true}
-                fixedWidth={false}
             >
                 <div className="mx_HostSignupDialog_container">
-                    <iframe
-                        src={this.hostSignupSetupUrl}
-                        ref={this.iframeRef}
-                        sandbox="allow-forms allow-scripts allow-same-origin"
-                    />
+                    {this.state.loadIframe &&
+                        <iframe
+                            src={this.hostSignupSetupUrl}
+                            ref={this.iframeRef}
+                            sandbox="allow-forms allow-scripts allow-same-origin"
+                        />
+                    }
+                    {!this.state.loadIframe &&
+                        <div className="mx_HostSignupDialog_info">
+                            <img
+                                alt="image of planet"
+                                src={require("../../../../res/img/host_signup.png")}
+                            />
+                            <div className="mx_HostSignupDialog_content">
+                                <h1>Unlock the power of Element</h1>
+                                <p>
+                                    Congratulations! You taken your first steps into unlocking the full power of&nbsp;
+                                    the Element app. In a few minutes, you'll be able to see how powerful our&nbsp;
+                                    Matrix services are and take control of your conversation data.
+                                </p>
+                            </div>
+                            <div>
+                                <button onClick={this.props.requestClose}>Maybe later</button>
+                                <button onClick={this.loadIframe} className="mx_Dialog_primary">
+                                    Lets get started
+                                </button>
+                            </div>
+                        </div>
+                    }
                     {this.state.error &&
                         <div>
                             {this.state.error}