shape reporting refcount

Author: Titanium2099

src/helper/collab-live.js

@@ -1,17 +1,22 @@
 let importer = null;
-let reporting = false;
+const reporters = new Set();
 let bitmapReplayer = null;
 
-export const setShapeReporting = value => {
-    reporting = value === true;
+/**
+ * @param {boolean} value on or off
+ * @param {string} [who] requester
+ */
+export const setShapeReporting = (value, who = 'collab') => {
+    if (value === true) reporters.add(who);
+    else reporters.delete(who);
 };
 
 /**
  * Should this commit be split into shapes?
  *
- * @returns {boolean} true while somebody is in a room
+ * @returns {boolean} true while reporting is on
  */
-export const shapeReportingEnabled = () => reporting;
+export const shapeReportingEnabled = () => reporters.size > 0;
 
 /**
  * Register the open editor's bitmap replayer. Called by the update-image HOC on mount.