Initial implementation: SetDisplayName -> SetMxIdDialog

- Replaces SetDisplayNameDialog with SetMxIdDialog. This new dialog will use InteractiveAuth to authenticate a user with their chosen mxid.

De-scoped:
 - style tweaks for the InteractiveAuth in the dialog (capcha) and error message.
 - checking for mxid availability

src/components/views/dialogs/SetMxIdDialog.js

@@ -0,0 +1,153 @@
+/*
+Copyright 2016 OpenMarket Ltd
+
+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 q from 'q';
+import React from 'react';
+import sdk from '../../../index';
+import MatrixClientPeg from '../../../MatrixClientPeg';
+
+/**
+ * Prompt the user to set a display name.
+ *
+ * On success, `onFinished(true, newDisplayName)` is called.
+ */
+export default React.createClass({
+    displayName: 'SetMxIdDialog',
+    propTypes: {
+        onFinished: React.PropTypes.func.isRequired,
+    },
+
+    getInitialState: function() {
+        return {
+            username : '',
+            doingUIAuth: false,
+        }
+    },
+
+    componentDidMount: function() {
+        this.refs.input_value.select();
+
+        this._matrixClient = MatrixClientPeg.get();
+    },
+
+    onValueChange: function(ev) {
+        this.setState({
+            username: ev.target.value
+        });
+    },
+
+    onSubmit: function(ev) {
+        this.setState({
+            doingUIAuth: true,
+        });
+    },
+
+    _generateAndCachePassword: function() {
+        const pass = Math.random().toString(36).slice(2);
+        if (localStorage) {
+            localStorage.setItem('mx_pass', pass);
+        }
+        return pass;
+    },
+
+    _makeRegisterRequest: function(auth) {
+        // Not upgrading - changing mxids
+        const guestAccessToken = null;
+
+        return this._matrixClient.register(
+            this.state.username,
+            this._generateAndCachePassword(),
+            undefined, // session id: included in the auth dict already
+            auth,
+            {},
+            guestAccessToken,
+        );
+    },
+
+    _onUIAuthFinished: function(success, response) {
+        this.setState({
+            doingUIAuth: false,
+        });
+        console.info('Auth Finsihed', arguments);
+
+        if (!success) {
+            this.setState({ errorText : response.message });
+            return;
+        }
+
+        // XXX Implement RTS /register here
+        const teamToken = null;
+
+        this.props.onFinished(true, {
+            userId: response.user_id,
+            deviceId: response.device_id,
+            homeserverUrl: this._matrixClient.getHomeserverUrl(),
+            identityServerUrl: this._matrixClient.getIdentityServerUrl(),
+            accessToken: response.access_token,
+            teamToken: teamToken,
+        });
+    },
+
+    render: function() {
+        const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
+        const InteractiveAuth = sdk.getComponent('structures.InteractiveAuth');
+        const Spinner = sdk.getComponent('elements.Spinner');
+        let auth;
+        if (this.state.doingUIAuth) {
+            auth = <InteractiveAuth
+                matrixClient={this._matrixClient}
+                makeRequest={this._makeRegisterRequest}
+                onAuthFinished={this._onUIAuthFinished}
+                inputs={{}}
+                poll={true}
+            />;
+        }
+        return (
+            <BaseDialog className="mx_SetMxIdDialog"
+                onFinished={this.props.onFinished}
+                title="Choose a Username"
+            >
+                <div className="mx_Dialog_content">
+                    <p>
+                        Beyond this point you're going to need to pick a username - your
+                        unique identifire in Riot.
+                    </p>
+                    <p>
+                        <small>
+                            You can't change your username, but you can always choose how you
+                            appear to other people in Riot by changing your display name.
+                        </small>
+                    </p>
+                    <input type="text" ref="input_value" value={this.state.username}
+                        autoFocus={true} onChange={this.onValueChange} size="30"
+                        className="mx_SetMxIdDialog_input"
+                    />
+                    { auth }
+                    <div>
+                        { this.state.errorText }
+                    </div>
+                </div>
+                <div className="mx_Dialog_buttons">
+                    <input className="mx_Dialog_primary"
+                        type="submit"
+                        value="Continue"
+                        onClick={this.onSubmit}
+                    />
+                </div>
+            </BaseDialog>
+        );
+    },
+});