Disable all widget assets on widget removal.

src/ScalarAuthClient.js

@@ -148,6 +148,33 @@ class ScalarAuthClient {
         return defer.promise;
     }
 
+    disableWidgetAssets(widgetType, widgetId) {
+        let url = SdkConfig.get().integrations_rest_url + '/widgets/set_assets_state';
+        url = this.getStarterLink(url);
+        return new Promise((resolve, reject) => {
+            request({
+                method: 'GET',
+                uri: url,
+                json: true,
+                qs: {
+                    'widget_type': widgetType,
+                    'widget_id': widgetId,
+                    'state': 'disable',
+                },
+            }, (err, response, body) => {
+                if (err) {
+                    reject(err);
+                } else if (response.statusCode / 100 !== 2) {
+                    reject({statusCode: response.statusCode});
+                } else if (!body) {
+                    reject(new Error("Failed to set widget assets state"));
+                } else {
+                    resolve();
+                }
+            });
+        });
+    }
+
     getScalarInterfaceUrlForRoom(room, screen, id) {
         const roomId = room.roomId;
         const roomName = room.name;

src/components/views/rooms/Stickerpack.js

@@ -55,6 +55,15 @@ export default class Stickerpack extends React.Component {
 
     _removeStickerpackWidgets() {
         console.warn('Removing stickerpack widgets');
+        if (this.widgetId) {
+            this.scalarClient.disableWidgetAssets('stickerpack', this.widgetId).then(() => {
+                console.warn('Assets disabled');
+            }).catch((err) => {
+                console.error('Failed to disable assets');
+            });
+        } else {
+            console.warn('No widget ID specified, not disabling assets');
+        }
         Widgets.removeStickerpackWidgets();
         this._getStickerPickerWidget();
         this.stickersMenu.close();
@@ -151,6 +160,7 @@ export default class Stickerpack extends React.Component {
             // Default content to show if stickerpack widget not added
             console.warn("No available sticker picker widgets");
             stickersContent = this.defaultStickersContent;
+            this.widgetId = null;
             this.forceUpdate();
         }
         this.setState({