Firt commit of timer module

utils/index.js

@@ -4,5 +4,6 @@ console.log('Load utils')
 module.exports = {
     get equipment() { return require('./equipment') },
     get lib() { return require('./lib') },
+    get timer() { return require('./timer')},
     get watch() { return require('./watch') },
 } 

utils/timer.js

@@ -0,0 +1,54 @@
+console.loggerName = 'js.timer';
+console.log('Load timer module');
+
+class Timer {
+
+    #timers = new Object();
+
+    constructor() {
+        console.log('Initialization of timer');
+    }
+
+    create(identifier, timeout, func) {
+        console.debug(`Create timer with identifier ${identifier}`);
+        this.#timers[identifier] = actions.ScriptExecution.createTimer(identifier, timeout, func);
+    }
+
+    cancel(identifier) {
+        if (!this.#timers.hasOwnProperty(identifier)) {
+            console.debug(`No timer with identifier ${identifier} available to cancel`);
+            return false;
+        }
+
+        if (!this.#timers[identifier].isActive()) {
+            console.debug(`Timer with identifier ${identifier} not running. Cancel anyway`);
+        } else {
+            console.debug(`Cancel timer with identifier ${identifier}`);  
+        }
+
+        this.#timers[identifier].cancel();
+        delete this.#timers[identifier];
+    }
+
+    cancelAll() {
+
+        let timers = Object.keys(this.#timers);
+
+        if (timers.length == 0) {
+            console.debug('No timers available to cancel');
+            return false;
+        }
+        
+        for (let timer of timers) {
+           this.cancel(timer);
+        }
+    }
+}
+
+
+
+module.exports = {
+    Timer,
+};
+
+