Fix the hangup button and other custom actions

src/stores/widgets/ElementWidgetActions.ts

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2020 The Matrix.org Foundation C.I.C.
+ *
+ * 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.
+ */
+
+export enum ElementWidgetActions {
+    ClientReady = "im.vector.ready",
+    HangupCall = "im.vector.hangup",
+    OpenIntegrationManager = "integration_manager_open",
+}

src/stores/widgets/StopGapWidget.ts

@@ -38,6 +38,7 @@ import ActiveWidgetStore from "../ActiveWidgetStore";
 import { objectShallowClone } from "../../utils/objects";
 import defaultDispatcher from "../../dispatcher/dispatcher";
 import dis from "../../dispatcher/dispatcher";
+import { ElementWidgetActions } from "./ElementWidgetActions";
 
 // TODO: Destroy all of this code
 
@@ -178,7 +179,7 @@ export class StopGapWidget extends EventEmitter {
                 },
             );
         } else if (WidgetType.STICKERPICKER.matches(this.mockWidget.type)) {
-            this.messaging.addEventListener("action:integration_manager_open",
+            this.messaging.addEventListener(`action:${ElementWidgetActions.OpenIntegrationManager}`,
                 (ev: CustomEvent<IWidgetApiRequest>) => {
                     // Acknowledge first
                     ev.preventDefault();