NativeScript · NathanWalker · Jul 1, 2024 · Oct 25, 2023 · Jan 2, 2024 · Jan 7, 2024
diff --git a/packages/core/.gitignore b/packages/core/.gitignore
@@ -9,4 +9,5 @@ dist
 css/parser.js*
 css/system-classes.js*
 !css-value/**/*.*
-!fetch/**/*.*
+!fetch/**/*.*
+/coverage
diff --git a/packages/core/application/application.android.ts b/packages/core/application/application.android.ts
@@ -1,5 +1,6 @@
 import { profile } from '../profiling';
-import { View } from '../ui';
+import { View } from '../ui/core/view';
+import { isEmbedded } from '../ui/embedding';
 import { AndroidActivityCallbacks, NavigationEntry } from '../ui/frame/frame-common';
 import type { AndroidApplication as IAndroidApplication } from './application';
 import { ApplicationCommon } from './application-common';
@@ -10,6 +11,12 @@ declare namespace com {
 		class NativeScriptApplication extends android.app.Application {
 			static getInstance(): NativeScriptApplication;
 		}
+
+		namespace embedding {
+			class ApplicationHolder {
+				static getInstance(): android.app.Application;
+			}
+		}
 	}
 }
 
@@ -358,6 +365,10 @@ export class AndroidApplication extends ApplicationCommon implements IAndroidApp
 			nativeApp = com.tns.NativeScriptApplication.getInstance();
 		}
 
+		if (!nativeApp && isEmbedded()) {
+			nativeApp = com.tns.embedding.ApplicationHolder.getInstance();
+		}
+
 		// the getInstance might return null if com.tns.NativeScriptApplication exists but is not the starting app type
 		if (!nativeApp) {
 			// TODO: Should we handle the case when a custom application type is provided and the user has not explicitly initialized the application module?

diff --git a/packages/core/application/application.ios.ts b/packages/core/application/application.ios.ts
@@ -1,5 +1,6 @@
 import { profile } from '../profiling';
-import { View } from '../ui';
+import { View } from '../ui/core/view';
+import { isEmbedded } from '../ui/embedding';
 import { IOSHelper } from '../ui/core/view/view-helper';
 import { NavigationEntry } from '../ui/frame/frame-interfaces';
 import * as Utils from '../utils';
@@ -367,7 +368,7 @@ export class iOSApplication extends ApplicationCommon implements IiOSApplication
 		});
 
 		if (this._window) {
-			if (root !== null && !NativeScriptEmbedder.sharedInstance().delegate) {
+			if (root !== null && !isEmbedded()) {
 				this.setWindowContent(root);
 			}
 		} else {

diff --git a/packages/core/package.json b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nativescript/core",
-  "version": "8.8.0",
+  "version": "8.8.0-embed.1",
   "description": "A JavaScript library providing an easy to use api for interacting with iOS and Android platform APIs.",
   "main": "index",
   "types": "index.d.ts",

diff --git a/packages/core/ui/embedding/index.android.ts b/packages/core/ui/embedding/index.android.ts
@@ -0,0 +1,26 @@
+import type { View } from '../../ui/core/view';
+
+declare namespace org {
+	namespace nativescript {
+		class Bootstrap {
+			static isEmbeddedNativeScript: boolean;
+		}
+	}
+}
+
+export function isEmbedded(): boolean {
+	return org.nativescript?.Bootstrap?.isEmbeddedNativeScript;
+}
+
+let embeddedView: View | undefined;
+
+export function setEmbeddedView(view: View | undefined): void {
+	embeddedView = view;
+}
+
+export function getEmbeddedView(): View {
+	if (!embeddedView) {
+		throw new Error("{N} Core: Fragment content view not set or set to 'undefined'");
+	}
+	return embeddedView;
+}
diff --git a/packages/core/ui/embedding/index.d.ts b/packages/core/ui/embedding/index.d.ts
@@ -0,0 +1,10 @@
+import type { View } from '../../ui/core/view';
+
+/**
+ * Whether the app is embedded into a host project or standalone project
+ */
+export function isEmbedded(): boolean;
+
+export function setEmbeddedView(view: View | undefined): void;
+
+export function getEmbeddedView(): View;
diff --git a/packages/core/ui/embedding/index.ios.ts b/packages/core/ui/embedding/index.ios.ts
@@ -0,0 +1,3 @@
+export function isEmbedded(): boolean {
+	return !!NativeScriptEmbedder.sharedInstance().delegate;
+}
diff --git a/packages/core/ui/frame/activity.android.ts b/packages/core/ui/frame/activity.android.ts
@@ -1,62 +1,135 @@
 import '../../globals';
-import { setActivityCallbacks, AndroidActivityCallbacks } from '.';
+import { setActivityCallbacks } from '.';
 import { Application } from '../../application';
+import { isEmbedded } from '../embedding';
 
-/**
- * NOTE: We cannot use NativeClass here because this is used in appComponents in webpack.config
- * Whereby it bypasses the decorator transformation, hence pure es5 style written here
- */
-const superProto = androidx.appcompat.app.AppCompatActivity.prototype;
-(<any>androidx.appcompat.app.AppCompatActivity).extend('com.tns.NativeScriptActivity', {
-	init() {
-		// init must at least be defined
-	},
-	onCreate(savedInstanceState: android.os.Bundle): void {
-		Application.android.init(this.getApplication());
-
-		// Set isNativeScriptActivity in onCreate.
-		// The JS constructor might not be called because the activity is created from Android.
-		this.isNativeScriptActivity = true;
-		if (!this._callbacks) {
-			setActivityCallbacks(this);
-		}
-
-		this._callbacks.onCreate(this, savedInstanceState, this.getIntent(), superProto.onCreate);
-	},
-
-	onNewIntent(intent: android.content.Intent): void {
-		this._callbacks.onNewIntent(this, intent, superProto.setIntent, superProto.onNewIntent);
-	},
-
-	onSaveInstanceState(outState: android.os.Bundle): void {
-		this._callbacks.onSaveInstanceState(this, outState, superProto.onSaveInstanceState);
-	},
-
-	onStart(): void {
-		this._callbacks.onStart(this, superProto.onStart);
-	},
-
-	onStop(): void {
-		this._callbacks.onStop(this, superProto.onStop);
-	},
-
-	onDestroy(): void {
-		this._callbacks.onDestroy(this, superProto.onDestroy);
-	},
-
-	onPostResume(): void {
-		this._callbacks.onPostResume(this, superProto.onPostResume);
-	},
-
-	onBackPressed(): void {
-		this._callbacks.onBackPressed(this, superProto.onBackPressed);
-	},
-
-	onRequestPermissionsResult(requestCode: number, permissions: Array<string>, grantResults: Array<number>): void {
-		this._callbacks.onRequestPermissionsResult(this, requestCode, permissions, grantResults, undefined /*TODO: Enable if needed*/);
-	},
-
-	onActivityResult(requestCode: number, resultCode: number, data: android.content.Intent): void {
-		this._callbacks.onActivityResult(this, requestCode, resultCode, data, superProto.onActivityResult);
-	},
-});
+const EMPTY_FN = () => {};
+declare const com: any;
+
+if (!isEmbedded()) {
+	/**
+	 * NOTE: We cannot use NativeClass here because this is used in appComponents in webpack.config
+	 * Whereby it bypasses the decorator transformation, hence pure es5 style written here
+	 */
+	const superProto = androidx.appcompat.app.AppCompatActivity.prototype;
+	(<any>androidx.appcompat.app.AppCompatActivity).extend('com.tns.NativeScriptActivity', {
+		init() {
+			// init must at least be defined
+		},
+		onCreate(savedInstanceState: android.os.Bundle): void {
+			Application.android.init(this.getApplication());
+
+			// Set isNativeScriptActivity in onCreate.
+			// The JS constructor might not be called because the activity is created from Android.
+			this.isNativeScriptActivity = true;
+			if (!this._callbacks) {
+				setActivityCallbacks(this);
+			}
+
+			this._callbacks.onCreate(this, savedInstanceState, this.getIntent(), superProto.onCreate);
+		},
+
+		onNewIntent(intent: android.content.Intent): void {
+			this._callbacks.onNewIntent(this, intent, superProto.setIntent, superProto.onNewIntent);
+		},
+
+		onSaveInstanceState(outState: android.os.Bundle): void {
+			this._callbacks.onSaveInstanceState(this, outState, superProto.onSaveInstanceState);
+		},
+
+		onStart(): void {
+			this._callbacks.onStart(this, superProto.onStart);
+		},
+
+		onStop(): void {
+			this._callbacks.onStop(this, superProto.onStop);
+		},
+
+		onDestroy(): void {
+			this._callbacks.onDestroy(this, superProto.onDestroy);
+		},
+
+		onPostResume(): void {
+			this._callbacks.onPostResume(this, superProto.onPostResume);
+		},
+
+		onBackPressed(): void {
+			this._callbacks.onBackPressed(this, superProto.onBackPressed);
+		},
+
+		onRequestPermissionsResult(requestCode: number, permissions: Array<string>, grantResults: Array<number>): void {
+			this._callbacks.onRequestPermissionsResult(this, requestCode, permissions, grantResults, undefined /*TODO: Enable if needed*/);
+		},
+
+		onActivityResult(requestCode: number, resultCode: number, data: android.content.Intent): void {
+			this._callbacks.onActivityResult(this, requestCode, resultCode, data, superProto.onActivityResult);
+		},
+	});
+} else {
+	const Callbacks = com.tns.embedding.EmbeddableActivityCallbacks.extend({
+		init() {
+			// init must at least be defined
+		},
+		onCreate(savedInstanceState: android.os.Bundle): void {
+			const activity = this.getActivity();
+
+			Application.android.init(activity.getApplication());
+
+			// Set isNativeScriptActivity in onCreate.
+			// The JS constructor might not be called because the activity is created from Android.
+			activity.isNativeScriptActivity = true;
+			if (!activity._callbacks) {
+				setActivityCallbacks(activity);
+			}
+
+			activity._callbacks.onCreate(activity, savedInstanceState, activity.getIntent(), EMPTY_FN);
+		},
+
+		onNewIntent(intent: android.content.Intent): void {
+			const activity = this.getActivity();
+			activity._callbacks.onNewIntent(activity, intent, EMPTY_FN, EMPTY_FN);
+		},
+
+		onSaveInstanceState(outState: android.os.Bundle): void {
+			const activity = this.getActivity();
+			activity._callbacks.onSaveInstanceState(activity, outState, EMPTY_FN);
+		},
+
+		onStart(): void {
+			const activity = this.getActivity();
+			activity._callbacks.onStart(activity, EMPTY_FN);
+		},
+
+		onStop(): void {
+			const activity = this.getActivity();
+			activity._callbacks.onStop(activity, EMPTY_FN);
+		},
+
+		onDestroy(): void {
+			const activity = this.getActivity();
+			activity._callbacks.onDestroy(activity, EMPTY_FN);
+		},
+
+		onPostResume(): void {
+			const activity = this.getActivity();
+			activity._callbacks.onPostResume(activity, EMPTY_FN);
+		},
+
+		onBackPressed(): void {
+			const activity = this.getActivity();
+			activity._callbacks.onBackPressed(activity, EMPTY_FN);
+		},
+
+		onRequestPermissionsResult(requestCode: number, permissions: Array<string>, grantResults: Array<number>): void {
+			const activity = this.getActivity();
+			activity._callbacks.onRequestPermissionsResult(activity, requestCode, permissions, grantResults, undefined /*TODO: Enable if needed*/);
+		},
+
+		onActivityResult(requestCode: number, resultCode: number, data: android.content.Intent): void {
+			const activity = this.getActivity();
+			activity._callbacks.onActivityResult(activity, requestCode, resultCode, data, EMPTY_FN);
+		},
+	});
+
+	com.tns.embedding.CallbacksStore.setActivityCallbacks(new Callbacks());
+}