Use a callback prop instead of `window.`

src/components/structures/MatrixChat.js

@@ -975,6 +975,11 @@ module.exports = React.createClass({
         this._setPage(PageTypes.UserSettings);
     },
 
+    onTeamMemberRegistered: function(teamToken) {
+        this._teamToken = teamToken;
+        this._setPage(PageTypes.HomePage);
+    },
+
     onFinishPostRegistration: function() {
         // Don't confuse this with "PageType" which is the middle window to show
         this.setState({
@@ -1103,6 +1108,7 @@ module.exports = React.createClass({
                     customIsUrl={this.getCurrentIsUrl()}
                     registrationUrl={this.props.registrationUrl}
                     defaultDeviceDisplayName={this.props.defaultDeviceDisplayName}
+                    onTeamMemberRegistered={this.onTeamMemberRegistered}
                     onLoggedIn={this.onRegistered}
                     onLoginClick={this.onLoginClick}
                     onRegisterClick={this.onRegisterClick}

src/components/structures/login/Registration.js

@@ -58,6 +58,7 @@ module.exports = React.createClass({
             teamServerURL: React.PropTypes.string.isRequired,
         }),
         teamSelected: React.PropTypes.object,
+        onTeamMemberRegistered: React.PropTypes.func.isRequired,
 
         defaultDeviceDisplayName: React.PropTypes.string,
 
@@ -227,9 +228,7 @@ module.exports = React.createClass({
                     const teamToken = data.team_token;
                     // Store for use /w welcome pages
                     window.localStorage.setItem('mx_team_token', teamToken);
-                    // Set the team token and view homepage
-                    window.matrixChat._teamToken = teamToken;
-                    window.mxDispatcher.dispatch({action: 'view_home_page'});
+                    self.props.onTeamMemberRegistered(teamToken);
 
                     self._rtsClient.getTeam(teamToken).then((team) => {
                         console.log(