fix: [react-native-sdk] Adds screen share support on iOS

ios/sdk/sdk.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -33,8 +33,8 @@
 		4E0EF63A28CA4069005D1B03 /* JMCallKitProxy.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E0EF63728CA4069005D1B03 /* JMCallKitProxy.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		4E0EF63B28CA4069005D1B03 /* JMCallKitProxy.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E0EF63828CA4069005D1B03 /* JMCallKitProxy.m */; };
 		4E0EF63C28CA4069005D1B03 /* JMCallKitProxy.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E0EF63828CA4069005D1B03 /* JMCallKitProxy.m */; };
-		4E51B76425E5345E0038575A /* ScheenshareEventEmiter.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E51B76225E5345E0038575A /* ScheenshareEventEmiter.h */; };
-		4E51B76525E5345E0038575A /* ScheenshareEventEmiter.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E51B76325E5345E0038575A /* ScheenshareEventEmiter.m */; };
+		4E51B76425E5345E0038575A /* ScreenShareEventEmitter.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E51B76225E5345E0038575A /* ScreenShareEventEmitter.h */; };
+		4E51B76525E5345E0038575A /* ScreenShareEventEmitter.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E51B76325E5345E0038575A /* ScreenShareEventEmitter.m */; };
 		4E812F3328F9A4290087ACC9 /* JitsiMeetView+Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E812F3228F9A4290087ACC9 /* JitsiMeetView+Private.h */; };
 		4E812F3428F9A4290087ACC9 /* JitsiMeetView+Private.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E812F3228F9A4290087ACC9 /* JitsiMeetView+Private.h */; };
 		4E812F3928F9A4ED0087ACC9 /* JitsiMeetView+Private.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E812F3628F9A4ED0087ACC9 /* JitsiMeetView+Private.m */; };
@@ -66,7 +66,7 @@
 		DE9A0132289A9A9A00E41CBB /* RCTBridgeWrapper.h in Headers */ = {isa = PBXBuildFile; fileRef = 0B93EF7C1EC9DDCD0030D24D /* RCTBridgeWrapper.h */; };
 		DE9A0133289A9A9A00E41CBB /* JitsiMeetBaseLogHandler.h in Headers */ = {isa = PBXBuildFile; fileRef = DE81A2DC2317ED5400AE1940 /* JitsiMeetBaseLogHandler.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		DE9A0134289A9A9A00E41CBB /* JitsiMeetSDK.h in Headers */ = {isa = PBXBuildFile; fileRef = DEA9F283258A5D9900D4CD74 /* JitsiMeetSDK.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		DE9A0135289A9A9A00E41CBB /* ScheenshareEventEmiter.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E51B76225E5345E0038575A /* ScheenshareEventEmiter.h */; };
+		DE9A0135289A9A9A00E41CBB /* ScreenShareEventEmitter.h in Headers */ = {isa = PBXBuildFile; fileRef = 4E51B76225E5345E0038575A /* ScreenShareEventEmitter.h */; };
 		DE9A0136289A9A9A00E41CBB /* JitsiMeetBaseLogHandler+Private.h in Headers */ = {isa = PBXBuildFile; fileRef = DE65AACB2318028300290BEC /* JitsiMeetBaseLogHandler+Private.h */; };
 		DE9A0138289A9A9A00E41CBB /* JitsiMeetViewDelegate.h in Headers */ = {isa = PBXBuildFile; fileRef = 0B412F1B1EDEC80100B1A0A6 /* JitsiMeetViewDelegate.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		DE9A0139289A9A9A00E41CBB /* JitsiAudioSession.h in Headers */ = {isa = PBXBuildFile; fileRef = 4ED4FFF12721B9B90074E620 /* JitsiAudioSession.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -94,7 +94,7 @@
 		DE9A0153289A9A9A00E41CBB /* Proximity.m in Sources */ = {isa = PBXBuildFile; fileRef = 0BCA495E1EC4B6C600B793EE /* Proximity.m */; };
 		DE9A0155289A9A9A00E41CBB /* ReactUtils.m in Sources */ = {isa = PBXBuildFile; fileRef = DEFE535521FB2E8300011A3A /* ReactUtils.m */; };
 		DE9A0157289A9A9A00E41CBB /* DragGestureController.swift in Sources */ = {isa = PBXBuildFile; fileRef = C6A3425E204EF76800E062DD /* DragGestureController.swift */; };
-		DE9A0158289A9A9A00E41CBB /* ScheenshareEventEmiter.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E51B76325E5345E0038575A /* ScheenshareEventEmiter.m */; };
+		DE9A0158289A9A9A00E41CBB /* ScreenShareEventEmitter.m in Sources */ = {isa = PBXBuildFile; fileRef = 4E51B76325E5345E0038575A /* ScreenShareEventEmitter.m */; };
 		DE9A015C289A9A9A00E41CBB /* JitsiMeetLogger.m in Sources */ = {isa = PBXBuildFile; fileRef = DE81A2D32316AC4D00AE1940 /* JitsiMeetLogger.m */; };
 		DE9A015E289A9A9A00E41CBB /* JitsiMeetView.m in Sources */ = {isa = PBXBuildFile; fileRef = 0B412F171EDEC65D00B1A0A6 /* JitsiMeetView.m */; };
 		DE9A015F289A9A9A00E41CBB /* JitsiMeet.m in Sources */ = {isa = PBXBuildFile; fileRef = DEFE535321FB1BF800011A3A /* JitsiMeet.m */; };
@@ -138,8 +138,8 @@
 		4E0EF63428CA317E005D1B03 /* JMCallKitListener.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = JMCallKitListener.h; sourceTree = "<group>"; };
 		4E0EF63728CA4069005D1B03 /* JMCallKitProxy.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = JMCallKitProxy.h; sourceTree = "<group>"; };
 		4E0EF63828CA4069005D1B03 /* JMCallKitProxy.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = JMCallKitProxy.m; sourceTree = "<group>"; };
-		4E51B76225E5345E0038575A /* ScheenshareEventEmiter.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ScheenshareEventEmiter.h; sourceTree = "<group>"; };
-		4E51B76325E5345E0038575A /* ScheenshareEventEmiter.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ScheenshareEventEmiter.m; sourceTree = "<group>"; };
+		4E51B76225E5345E0038575A /* ScreenShareEventEmitter.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ScreenShareEventEmitter.h; sourceTree = "<group>"; };
+		4E51B76325E5345E0038575A /* ScreenShareEventEmitter.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ScreenShareEventEmitter.m; sourceTree = "<group>"; };
 		4E812F3228F9A4290087ACC9 /* JitsiMeetView+Private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "JitsiMeetView+Private.h"; sourceTree = "<group>"; };
 		4E812F3628F9A4ED0087ACC9 /* JitsiMeetView+Private.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "JitsiMeetView+Private.m"; sourceTree = "<group>"; };
 		4ED4FFF12721B9B90074E620 /* JitsiAudioSession.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = JitsiAudioSession.h; sourceTree = "<group>"; };
@@ -292,8 +292,8 @@
 				C8AFD27E2462C613000293D2 /* InfoPlistUtil.m */,
 				C81E9AB825AC5AD800B134D9 /* ExternalAPI.h */,
 				0BA13D301EE83FF8007BEF7F /* ExternalAPI.m */,
-				4E51B76225E5345E0038575A /* ScheenshareEventEmiter.h */,
-				4E51B76325E5345E0038575A /* ScheenshareEventEmiter.m */,
+				4E51B76225E5345E0038575A /* ScreenShareEventEmitter.h */,
+				4E51B76325E5345E0038575A /* ScreenShareEventEmitter.m */,
 				DE9A0170289A9A9A00E41CBB /* Lite-Info.plist */,
 			);
 			path = src;
@@ -367,7 +367,7 @@
 				0B93EF7E1EC9DDCD0030D24D /* RCTBridgeWrapper.h in Headers */,
 				DE81A2DE2317ED5400AE1940 /* JitsiMeetBaseLogHandler.h in Headers */,
 				DEA9F284258A5D9900D4CD74 /* JitsiMeetSDK.h in Headers */,
-				4E51B76425E5345E0038575A /* ScheenshareEventEmiter.h in Headers */,
+				4E51B76425E5345E0038575A /* ScreenShareEventEmitter.h in Headers */,
 				DE65AACC2318028300290BEC /* JitsiMeetBaseLogHandler+Private.h in Headers */,
 				0B412F221EDEF6EA00B1A0A6 /* JitsiMeetViewDelegate.h in Headers */,
 				4E0EF63528CA317E005D1B03 /* JMCallKitListener.h in Headers */,
@@ -393,7 +393,7 @@
 				DE9A0132289A9A9A00E41CBB /* RCTBridgeWrapper.h in Headers */,
 				DE9A0133289A9A9A00E41CBB /* JitsiMeetBaseLogHandler.h in Headers */,
 				DE9A0134289A9A9A00E41CBB /* JitsiMeetSDK.h in Headers */,
-				DE9A0135289A9A9A00E41CBB /* ScheenshareEventEmiter.h in Headers */,
+				DE9A0135289A9A9A00E41CBB /* ScreenShareEventEmitter.h in Headers */,
 				DE9A0136289A9A9A00E41CBB /* JitsiMeetBaseLogHandler+Private.h in Headers */,
 				DE9A0138289A9A9A00E41CBB /* JitsiMeetViewDelegate.h in Headers */,
 				4E0EF63628CA317E005D1B03 /* JMCallKitListener.h in Headers */,
@@ -678,7 +678,7 @@
 				4E0EF63228CA2FB3005D1B03 /* JMCallKitEmitter.m in Sources */,
 				DEFE535621FB2E8300011A3A /* ReactUtils.m in Sources */,
 				C6A34261204EF76800E062DD /* DragGestureController.swift in Sources */,
-				4E51B76525E5345E0038575A /* ScheenshareEventEmiter.m in Sources */,
+				4E51B76525E5345E0038575A /* ScreenShareEventEmitter.m in Sources */,
 				A4A934E9212F3ADB001E9388 /* Dropbox.m in Sources */,
 				DE81A2D52316AC4D00AE1940 /* JitsiMeetLogger.m in Sources */,
 				0B412F191EDEC65D00B1A0A6 /* JitsiMeetView.m in Sources */,
@@ -711,7 +711,7 @@
 				4E812F3A28F9A4ED0087ACC9 /* JitsiMeetView+Private.m in Sources */,
 				DE9A0155289A9A9A00E41CBB /* ReactUtils.m in Sources */,
 				DE9A0157289A9A9A00E41CBB /* DragGestureController.swift in Sources */,
-				DE9A0158289A9A9A00E41CBB /* ScheenshareEventEmiter.m in Sources */,
+				DE9A0158289A9A9A00E41CBB /* ScreenShareEventEmitter.m in Sources */,
 				DE9A015C289A9A9A00E41CBB /* JitsiMeetLogger.m in Sources */,
 				4E0EF63328CA2FB3005D1B03 /* JMCallKitEmitter.m in Sources */,
 				DE9A015E289A9A9A00E41CBB /* JitsiMeetView.m in Sources */,
@@ -873,7 +873,11 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "";
 				INFOPLIST_FILE = src/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
 				PRODUCT_BUNDLE_IDENTIFIER = org.jitsi.JitsiMeetSDK.ios;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -902,7 +906,11 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "";
 				INFOPLIST_FILE = src/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
 				PRODUCT_BUNDLE_IDENTIFIER = org.jitsi.JitsiMeetSDK.ios;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -935,7 +943,11 @@
 					"JITSI_MEET_SDK_LITE=1",
 				);
 				INFOPLIST_FILE = "src/Lite-Info.plist";
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
 				PRODUCT_BUNDLE_IDENTIFIER = org.jitsi.JitsiMeetSDK.ios;
 				PRODUCT_NAME = JitsiMeetSDK;
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -969,7 +981,11 @@
 					JITSI_MEET_SDK_LITE,
 				);
 				INFOPLIST_FILE = "src/Lite-Info.plist";
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
 				PRODUCT_BUNDLE_IDENTIFIER = org.jitsi.JitsiMeetSDK.ios;
 				PRODUCT_NAME = JitsiMeetSDK;
 				PROVISIONING_PROFILE_SPECIFIER = "";

ios/sdk/src/JitsiMeet.m

@@ -24,7 +24,7 @@
 #import "RCTBridgeWrapper.h"
 #import "ReactUtils.h"
 #import "RNSplashScreen.h"
-#import "ScheenshareEventEmiter.h"
+#import "ScreenShareEventEmitter.h"
 
 #import <react-native-webrtc/WebRTCModuleOptions.h>
 
@@ -36,7 +36,7 @@
 @implementation JitsiMeet {
     RCTBridgeWrapper *_bridgeWrapper;
     NSDictionary *_launchOptions;
-    ScheenshareEventEmiter *_screenshareEventEmiter;
+    ScreenShareEventEmitter *_screenShareEventEmitter;
 }
 
 #pragma mak - This class is a singleton
@@ -64,7 +64,7 @@ - (instancetype)init {
         _bridgeWrapper = [[RCTBridgeWrapper alloc] init];
 
         // Initialize the listener for handling start/stop screensharing notifications.
-        _screenshareEventEmiter = [[ScheenshareEventEmiter alloc] init];
+        _screenShareEventEmitter = [[ScreenShareEventEmitter alloc] init];
 
         // Register a fatal error handler for React.
         registerReactFatalErrorHandler();

ios/sdk/src/ScheenshareEventEmiter.h → ios/sdk/src/ScreenShareEventEmitter.h

@@ -13,13 +13,14 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 #import <Foundation/Foundation.h>
 
-NS_ASSUME_NONNULL_BEGIN
+#import <React/RCTBridgeModule.h>
+#import <React/RCTEventEmitter.h>
 
-@interface ScheenshareEventEmiter : NSObject
+NS_ASSUME_NONNULL_BEGIN
 
+@interface ScreenShareEventEmitter : RCTEventEmitter <RCTBridgeModule>
 @end
 
 NS_ASSUME_NONNULL_END

ios/sdk/src/ScheenshareEventEmiter.m → ios/sdk/src/ScreenShareEventEmitter.m

@@ -14,24 +14,34 @@
  * limitations under the License.
  */
 
-#import "ScheenshareEventEmiter.h"
-#import "JitsiMeet+Private.h"
-#import "ExternalAPI.h"
+#import "ScreenShareEventEmitter.h"
+#import <React/RCTLog.h>
+#import <React/RCTBridge.h>
 
 NSNotificationName const kBroadcastStartedNotification = @"iOS_BroadcastStarted";
 NSNotificationName const kBroadcastStoppedNotification = @"iOS_BroadcastStopped";
 
-@implementation ScheenshareEventEmiter {
+static NSString * const toggleScreenShareAction = @"org.jitsi.meet.TOGGLE_SCREEN_SHARE";
+
+@implementation ScreenShareEventEmitter {
     CFNotificationCenterRef _notificationCenter;
+    bool hasListeners;
 }
 
+RCT_EXPORT_MODULE();
+
+- (NSDictionary *)constantsToExport {
+    return @{
+        @"TOGGLE_SCREEN_SHARE": toggleScreenShareAction,
+    };
+};
+
 - (instancetype)init {
     self = [super init];
     if (self) {
         _notificationCenter = CFNotificationCenterGetDarwinNotifyCenter();
         [self setupObserver];
     }
-
     return self;
 }
 
@@ -44,29 +54,46 @@ - (void)dealloc {
 - (void)setupObserver {
     CFNotificationCenterAddObserver(_notificationCenter, (__bridge const void *)(self), broadcastStartedNotificationCallback, (__bridge CFStringRef)kBroadcastStartedNotification, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);
     CFNotificationCenterAddObserver(_notificationCenter, (__bridge const void *)(self), broadcastStoppedNotificationCallback, (__bridge CFStringRef)kBroadcastStoppedNotification, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);
+    hasListeners = YES;
 }
 
 - (void)clearObserver {
     CFNotificationCenterRemoveObserver(_notificationCenter, (__bridge const void *)(self), (__bridge CFStringRef)kBroadcastStartedNotification, NULL);
     CFNotificationCenterRemoveObserver(_notificationCenter, (__bridge const void *)(self), (__bridge CFStringRef)kBroadcastStoppedNotification, NULL);
+    hasListeners = NO;
 }
 
 void broadcastStartedNotificationCallback(CFNotificationCenterRef center,
                                           void *observer,
                                           CFStringRef name,
                                           const void *object,
                                           CFDictionaryRef userInfo) {
-    ExternalAPI *externalAPI = [[JitsiMeet sharedInstance] getExternalAPI];
-    [externalAPI toggleScreenShare:true];
+    ScreenShareEventEmitter *self = (__bridge ScreenShareEventEmitter *)observer;
+    [self handleBroadcastStarted];
 }
 
 void broadcastStoppedNotificationCallback(CFNotificationCenterRef center,
                                           void *observer,
                                           CFStringRef name,
                                           const void *object,
                                           CFDictionaryRef userInfo) {
-    ExternalAPI *externalAPI = [[JitsiMeet sharedInstance] getExternalAPI];
-    [externalAPI toggleScreenShare:false];
+    ScreenShareEventEmitter *self = (__bridge ScreenShareEventEmitter *)observer;
+    [self handleBroadcastStopped];
+}
+
+- (void)handleBroadcastStarted {
+    RCTLogInfo(@"Broadcast started");
+    [self sendEventWithName:toggleScreenShareAction body:@{@"enabled": @TRUE}];
+}
+
+- (void)handleBroadcastStopped {
+    RCTLogInfo(@"Broadcast stopped");
+    [self sendEventWithName:toggleScreenShareAction body:@{@"enabled": @FALSE}];
+}
+
+// Override the supportedEvents method
+- (NSArray<NSString *> *)supportedEvents {
+    return @[toggleScreenShareAction];
 }
 
 @end

react-native-sdk/prepare_sdk.js

@@ -162,6 +162,14 @@ fs.copyFileSync(
     `${iosSrcPath}/LocaleDetector.m`,
     `${iosDestPath}/LocaleDetector.m`
 );
+fs.copyFileSync(
+    `${iosSrcPath}/ScreenShareEventEmitter.m`,
+    `${iosDestPath}/ScreenShareEventEmitter.m`
+);
+fs.copyFileSync(
+    `${iosSrcPath}/ScreenShareEventEmitter.h`,
+    `${iosDestPath}/ScreenShareEventEmitter.h`
+);
 fs.copyFileSync(
     `${iosSrcPath}/POSIX.m`,
     `${iosDestPath}/POSIX.m`

react/features/app/middlewares.native.ts

@@ -10,6 +10,7 @@ import '../mobile/permissions/middleware';
 import '../mobile/proximity/middleware';
 import '../mobile/wake-lock/middleware';
 import '../mobile/react-native-sdk/middleware';
+import '../mobile/screen-share/middleware';
 import '../mobile/watchos/middleware';
 import '../share-room/middleware';
 import '../shared-video/middleware';

react/features/mobile/external-api/middleware.ts

@@ -46,7 +46,6 @@ import {
 } from '../../base/participants/functions';
 import MiddlewareRegistry from '../../base/redux/MiddlewareRegistry';
 import StateListenerRegistry from '../../base/redux/StateListenerRegistry';
-import { toggleScreensharing } from '../../base/tracks/actions.native';
 import { getLocalTracks, isLocalTrackMuted } from '../../base/tracks/functions.native';
 import { ITrack } from '../../base/tracks/types';
 import { CLOSE_CHAT, OPEN_CHAT } from '../../chat/actionTypes';
@@ -373,10 +372,6 @@ function _registerForNativeEvents(store: IStore) {
         }
     });
 
-    eventEmitter.addListener(ExternalAPI.TOGGLE_SCREEN_SHARE, ({ enabled }: any) => {
-        dispatch(toggleScreensharing(enabled));
-    });
-
     eventEmitter.addListener(ExternalAPI.RETRIEVE_PARTICIPANTS_INFO, ({ requestId }: any) => {
 
         const participantsInfo = [];

react/features/mobile/react-native-sdk/middleware.js

@@ -18,7 +18,6 @@ import { isExternalAPIAvailable } from './functions';
 
 const externalAPIEnabled = isExternalAPIAvailable();
 
-
 /**
  * Check if native modules are being used or not.
  * If not, then the init of middleware doesn't happen.

react/features/mobile/screen-share/functions.ts

@@ -0,0 +1,12 @@
+import { NativeModules } from 'react-native';
+
+/**
+ * Determines if the ScreenShareEventEmitter native module is available.
+ *
+ * @returns {boolean} If yes {@code true} otherwise {@code false}.
+ */
+export function isScreenShareAPIAvailable() {
+    const { ScreenShareEventEmitter } = NativeModules;
+
+    return ScreenShareEventEmitter !== null;
+}