Add EnableNotificationButton component

src/components/views/settings/EnableNotificationsButton.js

@@ -0,0 +1,76 @@
+/*
+Copyright 2015 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.
+*/
+
+'use strict';
+var React = require("react");
+var sdk = require('../../../index');
+var dis = require("../../../dispatcher");
+
+module.exports = React.createClass({
+    displayName: 'EnableNotificationsButton',
+
+    componentDidMount: function() {
+        this.dispatcherRef = dis.register(this.onAction);
+    },
+
+    componentWillUnmount: function() {
+        dis.unregister(this.dispatcherRef);
+    },
+
+    onAction: function(payload) {
+        if (payload.action !== "notifier_enabled") {
+            return;
+        }
+        this.forceUpdate();
+    },
+
+    enabled: function() {
+        var Notifier = sdk.getComponent('organisms.Notifier');
+        return Notifier.isEnabled();
+    },
+
+    onClick: function() {
+        var Notifier = sdk.getComponent('organisms.Notifier');
+        var self = this;
+        if (!Notifier.supportsDesktopNotifications()) {
+            return;
+        }
+        if (!Notifier.isEnabled()) {
+            Notifier.setEnabled(true, function() {
+                self.forceUpdate();
+            });
+        } else {
+            Notifier.setEnabled(false);
+        }
+        this.forceUpdate();
+    },
+
+    render: function() {
+        if (this.enabled()) {
+            return (
+                <button className="mx_EnableNotificationsButton" onClick={this.onClick}>
+                    Disable Notifications
+                </button>
+            );
+        } else {
+            return (
+                <button className="mx_EnableNotificationsButton" onClick={this.onClick}>
+                    Enable Notifications
+                </button>
+            );
+        }
+    }
+});