diff --git a/src/components/views/dialogs/DevtoolsDialog.js b/src/components/views/dialogs/DevtoolsDialog.js
new file mode 100644
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--- /dev/null
+++ b/src/components/views/dialogs/DevtoolsDialog.js
@@ -0,0 +1,206 @@
+/*
+Copyright 2017 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 React from 'react';
+import sdk from 'matrix-react-sdk';
+import Modal from 'matrix-react-sdk/lib/Modal';
+import MatrixClientPeg from 'matrix-react-sdk/lib/MatrixClientPeg';
+
+class SendCustomEvent extends React.Component {
+ static propTypes = {
+ roomId: React.PropTypes.string.isRequired,
+ onFinished: React.PropTypes.func.isRequired,
+ };
+
+ constructor(props, context) {
+ super(props, context);
+ this._send = this._send.bind(this);
+ this.onCancel = this.onCancel.bind(this);
+ }
+
+ async _send() {
+ try {
+ const content = JSON.parse(this.refs.evContent.value);
+ await MatrixClientPeg.get().sendEvent(this.refs.roomId.value, this.refs.eventType.value, content);
+ this.props.onFinished(true);
+ } catch (e) {
+ this.props.onFinished(false);
+ const ErrorDialog = sdk.getComponent('dialogs.ErrorDialog');
+ Modal.createDialog(ErrorDialog, {
+ title: 'Failed to send custom event',
+ description: e.toString(),
+ });
+ }
+ }
+
+ onCancel() {
+ this.props.onFinished(false);
+ }
+
+ render() {
+ return <div>
+ <div className="mx_Dialog_content">
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="roomId"> Room ID </label>
+ </div>
+ <div>
+ <input id="roomId" ref="roomId" className="mx_TextInputDialog_input" defaultValue={this.props.roomId} size="64" />
+ </div>
+
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="eventType"> Event Type </label>
+ </div>
+ <div>
+ <input id="eventType" ref="eventType" className="mx_TextInputDialog_input" size="64" />
+ </div>
+
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="evContent"> Event Content </label>
+ </div>
+ <div>
+ <textarea id="evContent" ref="evContent" className="mx_TextInputDialog_input" defaultValue={"{\n\n}"} size="64" />
+ </div>
+ </div>
+ <div className="mx_Dialog_buttons">
+ <button onClick={this._send}>Send</button>
+ <button onClick={this.onCancel}>Cancel</button>
+ </div>
+ </div>;
+ }
+}
+
+class SendCustomStateEvent extends React.Component {
+ static propTypes = {
+ roomId: React.PropTypes.string.isRequired,
+ onFinished: React.PropTypes.func.isRequired,
+ };
+
+ constructor(props, context) {
+ super(props, context);
+ this._send = this._send.bind(this);
+ this.onCancel = this.onCancel.bind(this);
+ }
+
+ async _send() {
+ try {
+ const content = JSON.parse(this.refs.evContent.value);
+ await MatrixClientPeg.get().sendStateEvent(this.refs.roomId.value, this.refs.eventType.value, content, this.refs.stateKey.value);
+ this.props.onFinished(true);
+ } catch (e) {
+ this.props.onFinished(false);
+ const ErrorDialog = sdk.getComponent('dialogs.ErrorDialog');
+ Modal.createDialog(ErrorDialog, {
+ title: 'Failed to send custom event',
+ description: e.toString(),
+ });
+ }
+ }
+
+ onCancel() {
+ this.props.onFinished(false);
+ }
+
+ render() {
+ return <div>
+ <div className="mx_Dialog_content">
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="roomId"> Room ID </label>
+ </div>
+ <div>
+ <input id="roomId" ref="roomId" className="mx_TextInputDialog_input" defaultValue={this.props.roomId} size="64" />
+ </div>
+
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="stateKey"> State Key </label>
+ </div>
+ <div>
+ <input id="stateKey" ref="stateKey" className="mx_TextInputDialog_input" size="64" />
+ </div>
+
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="eventType"> Event Type </label>
+ </div>
+ <div>
+ <input id="eventType" ref="eventType" className="mx_TextInputDialog_input" size="64" />
+ </div>
+
+ <div className="mx_TextInputDialog_label">
+ <label htmlFor="evContent"> Event Content </label>
+ </div>
+ <div>
+ <textarea id="evContent" ref="evContent" className="mx_TextInputDialog_input" defaultValue={"{\n\n}"} size="64" />
+ </div>
+ </div>
+ <div className="mx_Dialog_buttons">
+ <button onClick={this._send}>Send</button>
+ <button onClick={this.onCancel}>Cancel</button>
+ </div>
+ </div>;
+ }
+}
+
+export default class DevtoolsDialog extends React.Component {
+ static propTypes = {
+ roomId: React.PropTypes.string.isRequired,
+ onFinished: React.PropTypes.func.isRequired,
+ };
+
+ state = {
+ mode: null,
+ };
+
+ constructor(props, context) {
+ super(props, context);
+ this.onCancel = this.onCancel.bind(this);
+ }
+
+ componentWillUnmount() {
+ this._unmounted = true;
+ }
+
+ _setMode(mode) {
+ return () => {
+ this.setState({ mode });
+ };
+ }
+
+ onCancel() {
+ this.props.onFinished(false);
+ }
+
+ render() {
+ let body;
+
+ if (this.state.mode) {
+ body = <this.state.mode {...this.props} />;
+ } else {
+ body = <div>
+ <div className="mx_Dialog_content">
+ <button onClick={this._setMode(SendCustomEvent)}>Send Custom Event</button>
+ <button onClick={this._setMode(SendCustomStateEvent)}>Send Custom State Event</button>
+ </div>
+ <div className="mx_Dialog_buttons">
+ <button onClick={this.onCancel}>Cancel</button>
+ </div>
+ </div>;
+ }
+
+ const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
+ return <BaseDialog className="mx_QuestionDialog" onFinished={this.props.onFinished} title="Developer Tools">
+ { body }
+ </BaseDialog>;
+ }
+}