Refactor 1

html/src/classes/apiInit.js

@@ -0,0 +1,53 @@
+import { baseClass, $app, API, $t } from './baseClass.js';
+
+export default class extends baseClass {
+    constructor(_app) {
+        super(_app);
+    }
+
+    eventHandlers = new Map();
+
+    $emit = function (name, ...args) {
+        if ($app.debug) {
+            console.log(name, ...args);
+        }
+        var handlers = this.eventHandlers.get(name);
+        if (typeof handlers === 'undefined') {
+            return;
+        }
+        try {
+            for (var handler of handlers) {
+                handler.apply(this, args);
+            }
+        } catch (err) {
+            console.error(err);
+        }
+    };
+
+    $on = function (name, handler) {
+        var handlers = this.eventHandlers.get(name);
+        if (typeof handlers === 'undefined') {
+            handlers = [];
+            this.eventHandlers.set(name, handlers);
+        }
+        handlers.push(handler);
+    };
+
+    $off = function (name, handler) {
+        var handlers = this.eventHandlers.get(name);
+        if (typeof handlers === 'undefined') {
+            return;
+        }
+        var { length } = handlers;
+        for (var i = 0; i < length; ++i) {
+            if (handlers[i] === handler) {
+                if (length > 1) {
+                    handlers.splice(i, 1);
+                } else {
+                    this.eventHandlers.delete(name);
+                }
+                break;
+            }
+        }
+    };
+}