From a332515f520987b084af6b831907d741ef7ace6f Mon Sep 17 00:00:00 2001
From: ashutosh16 <ashutosh_singh@intuit.com>
Date: Thu, 22 Aug 2024 13:07:07 -0700
Subject: [PATCH] add actio nmenu  ext

---
 .../app/shared/services/extensions-service.ts | 61 ++++++++++++++++---
 1 file changed, 52 insertions(+), 9 deletions(-)

diff --git a/ui/src/app/shared/services/extensions-service.ts b/ui/src/app/shared/services/extensions-service.ts
index 0a03a3bc6f356..0f3ad41b360e8 100644
--- a/ui/src/app/shared/services/extensions-service.ts
+++ b/ui/src/app/shared/services/extensions-service.ts
@@ -3,7 +3,34 @@ import * as minimatch from 'minimatch';
 
 import {Application, ApplicationTree, State} from '../models';
 
+type ExtensionsEventType = 'resource' | 'systemLevel' | 'appView' | 'statusPanel'| 'topBar';
+type ExtensionsType = ResourceTabExtension | SystemLevelExtension | AppViewExtension | StatusPanelExtension | TopBarExtension;
+
+class ExtensionsEventTarget {
+    private listeners: Map<ExtensionsEventType, Array<(extension: ExtensionsType) => void>> = new Map();
+
+    addEventListener(eventName: ExtensionsEventType, listener: (extension: ExtensionsType) => void) {
+        if (!this.listeners.has(eventName)) {
+            this.listeners.set(eventName, []);
+        }
+        this.listeners.get(eventName)?.push(listener);
+    }
+
+    removeEventListener(eventName: ExtensionsEventType, listenerToRemove: (extension: ExtensionsType) => void) {
+        const listeners = this.listeners.get(eventName);
+        if (!listeners) return;
+
+        const filteredListeners = listeners.filter(listener => listener !== listenerToRemove);
+        this.listeners.set(eventName, filteredListeners);
+    }
+
+    emit(eventName: ExtensionsEventType, extension: ExtensionsType) {
+        this.listeners.get(eventName)?.forEach(listener => listener(extension));
+    }
+}
+
 const extensions = {
+    eventTarget: new ExtensionsEventTarget(),
     resourceExtentions: new Array<ResourceTabExtension>(),
     systemLevelExtensions: new Array<SystemLevelExtension>(),
     appViewExtensions: new Array<AppViewExtension>(),
@@ -12,23 +39,33 @@ const extensions = {
 };
 
 function registerResourceExtension(component: ExtensionComponent, group: string, kind: string, tabTitle: string, opts?: {icon: string}) {
-    extensions.resourceExtentions.push({component, group, kind, title: tabTitle, icon: opts?.icon});
+    const ext = {component, group, kind, title: tabTitle, icon: opts?.icon};
+    extensions.resourceExtentions.push(ext);
+    extensions.eventTarget.emit('resource', ext);
 }
 
 function registerSystemLevelExtension(component: ExtensionComponent, title: string, path: string, icon: string) {
-    extensions.systemLevelExtensions.push({component, title, icon, path});
+    const ext = {component, title, icon, path};
+    extensions.systemLevelExtensions.push(ext);
+    extensions.eventTarget.emit('systemLevel', ext);
 }
 
 function registerAppViewExtension(component: ExtensionComponent, title: string, icon: string) {
-    extensions.appViewExtensions.push({component, title, icon});
+    const ext = {component, title, icon};
+    extensions.appViewExtensions.push(ext);
+    extensions.eventTarget.emit('appView', ext);
 }
 
-function registerStatusPanelExtension(component: StatusPanelExtensionComponent, title: string, id: string, flyout?: ExtensionComponent, isMiddle = false, isNarrow = false) {
-    extensions.statusPanelExtensions.push({component, flyout, title, id, isMiddle, isNarrow});
+function registerStatusPanelExtension(component: StatusPanelExtensionComponent, title: string, id: string, flyout?: ExtensionComponent) {
+    const ext = {component, flyout, title, id};
+    extensions.statusPanelExtensions.push(ext);
+    extensions.eventTarget.emit('statusPanel', ext);
 }
 
 function registerTopBarExtension(component: TopBarExtensionComponent, title: string, id: string, flyout?: ExtensionComponent, isMiddle = false, isNarrow = false) {
-    extensions.TopBarExtensions.push({component, flyout, title, id, isMiddle, isNarrow});
+    const ext = {component, flyout, title, id, isMiddle, isNarrow};
+    extensions.TopBarExtensions.push(ext);
+    extensions.eventTarget.emit('topBar', ext);
 }
 
 let legacyInitialized = false;
@@ -71,8 +108,6 @@ export interface StatusPanelExtension {
     flyout?: StatusPanelExtensionFlyoutComponent;
     title: string;
     id: string;
-    isMiddle: boolean;
-    isNarrow: boolean;
 }
 
 export interface TopBarExtension {
@@ -129,6 +164,14 @@ export interface TopBarExtensionFlyoutProps {
 }
 
 export class ExtensionsService {
+    public addEventListener(evtType: ExtensionsEventType, cb: (ext: ExtensionsType) => void) {
+        extensions.eventTarget.addEventListener(evtType, cb);
+    }
+
+    public removeEventListener(evtType: ExtensionsEventType, cb: (ext: ExtensionsType) => void) {
+        extensions.eventTarget.removeEventListener(evtType, cb);
+    }
+
     public getResourceTabs(group: string, kind: string): ResourceTabExtension[] {
         initLegacyExtensions();
         const items = extensions.resourceExtentions.filter(extension => minimatch(group, extension.group) && minimatch(kind, extension.kind)).slice();
@@ -161,4 +204,4 @@ export class ExtensionsService {
         registerStatusPanelExtension,
         registerTopBarExtension
     };
-})(window);
+})(window);
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