added trigger message code

front/src/Api/iframe/Ui/TriggerMessage.ts

@@ -0,0 +1,51 @@
+
+import { removeTriggerMessage, triggerMessage, TriggerMessageEvent } from '../../Events/ui/TriggerMessageEvent';
+import { sendToWorkadventure } from '../IframeApiContribution';
+function uuidv4() {
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+        const r = Math.random() * 16 | 0, v = c === 'x' ? r : (r & 0x3 | 0x8);
+        return v.toString(16);
+    });
+}
+
+export let triggerMessageInstance: TriggerMessage | undefined = undefined
+
+
+
+export class TriggerMessage {
+    uuid: string
+
+    constructor(private message: string, private callback: () => void) {
+        this.uuid = uuidv4()
+        if (triggerMessageInstance) {
+            triggerMessageInstance.remove();
+        }
+        triggerMessageInstance = this;
+        this.create();
+    }
+
+    create(): this {
+        sendToWorkadventure({
+            type: triggerMessage,
+            data: {
+                message: this.message,
+                uuid: this.uuid
+            } as TriggerMessageEvent
+        })
+        return this
+    }
+
+    remove() {
+        sendToWorkadventure({
+            type: removeTriggerMessage,
+            data: {
+                uuid: this.uuid
+            } as TriggerMessageEvent
+        })
+        triggerMessageInstance = undefined
+    }
+
+    trigger() {
+        this.callback();
+    }
+}