wire up measurement service "removed" event w/ cornerstone ext

platform/core/src/services/MeasurementService/MeasurementService.js

@@ -47,6 +47,7 @@ const MEASUREMENT_SCHEMA_KEYS = [
 const EVENTS = {
   MEASUREMENT_UPDATED: 'event::measurement_updated',
   MEASUREMENT_ADDED: 'event::measurement_added',
+  MEASUREMENT_REMOVED: 'event::measurement_removed',
 };
 
 const VALUE_TYPES = {
@@ -136,6 +137,9 @@ class MeasurementService {
     source.addOrUpdate = (definition, measurement) => {
       return this.addOrUpdate(source, definition, measurement);
     };
+    source.remove = id => {
+      return this.remove(source, id);
+    };
     source.getAnnotation = (definition, measurementId) => {
       return this.getAnnotation(source, definition, measurementId);
     };
@@ -338,6 +342,16 @@ class MeasurementService {
     return newMeasurement.id;
   }
 
+  remove(source, id) {
+    if (!id || !this.measurements[id]) {
+      log.warn(`No id provided, or unable to find measurement by id.`);
+      return;
+    }
+
+    delete this.measurements[id];
+    this._broadcastChange(this.EVENTS.MEASUREMENT_REMOVED, source, id);
+  }
+
   _getMappingByMeasurementSource(measurementId, definition) {
     const measurement = this.getMeasurement(measurementId);
     if (this._isValidSource(measurement.source)) {