feat: add support for uitextview autocapture (#195)

* Fix indentation issue

* feat: add user interactions capture

* fix: fix typo

* fix: remove support for UITextField action message capture

* refactor: add dispatch once for method swizzling

* fix: remove support for UISlider to reduce noise

* feat: add support for UITextField and UISlider event capture

* style: remove return keyword for one line functions

* fix: fix typo

* feat: add support for text field gained/lost focus

* fix: fix lint

* fix: remove tag as textfield title

* refactor: refactor title and shouldTrack

* refactor: add a protocol to track control elements

* refactor: guard on action name

* feat: add support for uitextview capture

* fix: disable action method tracking support for UITextView

* fix: fix lint issue

* style: remove amp_ prefix from objc methods

Author: PouriaAmini

Sources/Amplitude/Plugins/iOS/UIKitUserInteractions.swift

@@ -6,24 +6,14 @@ class UIKitUserInteractions {
 
     private static let lock = NSLock()
 
-    private static let initializeSwizzle: () = {
-        swizzleSendAction()
+    private static let addNotificationObservers: () = {
+        NotificationCenter.default.addObserver(UIKitUserInteractions.self, selector: #selector(didBeginEditing), name: UITextField.textDidBeginEditingNotification, object: nil)
+        NotificationCenter.default.addObserver(UIKitUserInteractions.self, selector: #selector(didEndEditing), name: UITextField.textDidEndEditingNotification, object: nil)
+        NotificationCenter.default.addObserver(UIKitUserInteractions.self, selector: #selector(didBeginEditing), name: UITextView.textDidBeginEditingNotification, object: nil)
+        NotificationCenter.default.addObserver(UIKitUserInteractions.self, selector: #selector(didEndEditing), name: UITextView.textDidEndEditingNotification, object: nil)
     }()
 
-    private static let initializeNotificationListeners: () = {
-        NotificationCenter.default.addObserver(UIKitUserInteractions.self, selector: #selector(UIKitUserInteractions.amp_textFieldDidBeginEditing), name: UITextField.textDidBeginEditingNotification, object: nil)
-        NotificationCenter.default.addObserver(UIKitUserInteractions.self, selector: #selector(UIKitUserInteractions.amp_textFieldDidEndEditing), name: UITextField.textDidEndEditingNotification, object: nil)
-    }()
-
-    static func register(_ amplitude: Amplitude) {
-        lock.withLock {
-            amplitudeInstances.add(amplitude)
-        }
-        initializeSwizzle
-        initializeNotificationListeners
-    }
-
-    private static func swizzleSendAction() {
+    private static let swizzleSendAction: () = {
         let applicationClass = UIApplication.self
 
         let originalSelector = #selector(UIApplication.sendAction)
@@ -45,19 +35,27 @@ class UIKitUserInteractions {
             originalSelector,
             swizzledImp,
             method_getTypeEncoding(swizzledMethod))
+    }()
+
+    static func register(_ amplitude: Amplitude) {
+        lock.withLock {
+            amplitudeInstances.add(amplitude)
+        }
+        swizzleSendAction
+        addNotificationObservers
     }
 
-    @objc static func amp_textFieldDidBeginEditing(_ notification: NSNotification) {
-        guard let textField = notification.object as? UITextField else { return }
-        let userInteractionEvent = textField.eventFromData(with: "didBeginEditing")
+    @objc static func didBeginEditing(_ notification: NSNotification) {
+        guard let view = notification.object as? UIView else { return }
+        let userInteractionEvent = view.eventFromData(with: "didBeginEditing")
         amplitudeInstances.allObjects.forEach {
             $0.track(event: userInteractionEvent)
         }
     }
 
-    @objc static func amp_textFieldDidEndEditing(_ notification: NSNotification) {
-        guard let textField = notification.object as? UITextField else { return }
-        let userInteractionEvent = textField.eventFromData(with: "didEndEditing")
+    @objc static func didEndEditing(_ notification: NSNotification) {
+        guard let view = notification.object as? UIView else { return }
+        let userInteractionEvent = view.eventFromData(with: "didEndEditing")
         amplitudeInstances.allObjects.forEach {
             $0.track(event: userInteractionEvent)
         }
@@ -68,13 +66,15 @@ extension UIApplication {
     @objc func amp_sendAction(_ action: Selector, to target: Any?, from sender: Any?, for event: UIEvent?) -> Bool {
         let sendActionResult = amp_sendAction(action, to: target, from: sender, for: event)
 
-        guard
-            sendActionResult,
+        guard sendActionResult,
             let view = sender as? UIView,
-            view.amp_shouldTrack(action, for: event)
+            view.amp_shouldTrack(action, for: event),
+            let actionName = NSStringFromSelector(action)
+                .components(separatedBy: ":")
+                .first
         else { return sendActionResult }
 
-        let userInteractionEvent = view.eventFromData(with: NSStringFromSelector(action).components(separatedBy: ":").first ?? "")
+        let userInteractionEvent = view.eventFromData(with: actionName)
 
         UIKitUserInteractions.amplitudeInstances.allObjects.forEach {
             $0.track(event: userInteractionEvent)
@@ -156,6 +156,10 @@ extension UITextField {
     override func amp_shouldTrack(_ action: Selector, for event: UIEvent?) -> Bool { false }
 }
 
+extension UITextView {
+    override func amp_shouldTrack(_ action: Selector, for event: UIEvent?) -> Bool { false }
+}
+
 #if !os(tvOS)
 extension UISlider {
     override func amp_shouldTrack(_ action: Selector, for event: UIEvent?) -> Bool {