pull out editor-client and editor-api

packages/node_modules/@node-red/editor-client/src/js/events.js

@@ -0,0 +1,53 @@
+/**
+ * Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * 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.
+ **/
+
+ RED.events = (function() {
+     var handlers = {};
+
+     function on(evt,func) {
+         handlers[evt] = handlers[evt]||[];
+         handlers[evt].push(func);
+     }
+     function off(evt,func) {
+         var handler = handlers[evt];
+         if (handler) {
+             for (var i=0;i<handler.length;i++) {
+                 if (handler[i] === func) {
+                     handler.splice(i,1);
+                     return;
+                 }
+             }
+         }
+     }
+     function emit(evt,arg) {
+         if (handlers[evt]) {
+             for (var i=0;i<handlers[evt].length;i++) {
+                 try {
+                     handlers[evt][i](arg);
+                 } catch(err) {
+                     console.log("RED.events.emit error: ["+evt+"] "+(err.toString()));
+                     console.log(err);
+                 }
+             }
+
+         }
+     }
+     return {
+         on: on,
+         off: off,
+         emit: emit
+     }
+ })();