[3][corvid-types][Deprecate Codemodel] Allow storing additional compo…

…nent event handlers in runtime (#64)

src/dynamicTypes/eventHandlersService.ts

@@ -9,15 +9,26 @@ export interface EventHandlersService {
   getComponentEventHandlers: (
     componentName: string
   ) => EventHandler[] | undefined;
+  registerComponentEventHandlers: (
+    componentName: string,
+    handlers: EventHandler[]
+  ) => void;
 }
 
-const eventHandlers = eventHandlersJSON as ComponentsEventHandlers;
+const $wEventHandlers = eventHandlersJSON as ComponentsEventHandlers;
+const eventHandlers = { ...$wEventHandlers };
 
 const eventHandlersService: EventHandlersService = {
   getComponentEventHandlers: (
     componentName: string
   ): EventHandler[] | undefined => {
     return eventHandlers[componentName];
+  },
+  registerComponentEventHandlers(
+    componentName: string,
+    handlers: EventHandler[]
+  ): void {
+    eventHandlers[componentName] = handlers;
   }
 };
 

test/it/event-handlers-service.spec.ts

@@ -0,0 +1,42 @@
+import eventHandlersService from "../../src/dynamicTypes/eventHandlersService";
+
+describe("eventHandlersService", () => {
+  it("should allow getting a $w component event handlers", () => {
+    const buttonHandlers = eventHandlersService.getComponentEventHandlers(
+      "$w.Button"
+    );
+    expect(buttonHandlers).toHaveLength(6);
+
+    const onClickHandler = buttonHandlers?.find(
+      handler => handler.name === "onClick"
+    );
+    expect(onClickHandler).not.toBe(undefined);
+  });
+
+  it("should allow adding component event handlers in runtime", () => {
+    eventHandlersService.registerComponentEventHandlers("MyComponent", [
+      {
+        name: "CustomEvent",
+        origin: "MyComponent",
+        description: "My custom event",
+        kind: "function",
+        type: "customEvent",
+        handlerArgs: [
+          {
+            name: "arg",
+            type: "string"
+          }
+        ]
+      }
+    ]);
+    const handlers = eventHandlersService.getComponentEventHandlers(
+      "MyComponent"
+    );
+    expect(handlers).toHaveLength(1);
+
+    const customHandler = handlers?.find(
+      handler => handler.name === "CustomEvent"
+    );
+    expect(customHandler).not.toBe(undefined);
+  });
+});