Move to separate files for behavior logic

decode molecule for headline in eyebrowheadlinebody
behaviors have models and handlers now, not just one

MVMCoreUI/Atomic/Atoms/Views/Video/ScrollBehaviorForVideo.swift

@@ -0,0 +1,25 @@
+//
+//  ScrollBehaviorForVideo.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+open class ScrollBehaviorForVideo: PageScrolledBehavior {
+    var model: PageBehaviorModelProtocol
+    
+    required public init(model: PageBehaviorModelProtocol, delegateObject: MVMCoreUIDelegateObject?) {
+        self.model = model
+    }
+
+    public func pageScrolled(scrollView: UIScrollView) {
+        // If visible to not visible, pause video.
+        // If not visible to visible, unpause if needed, add visible behavior
+        guard let model = (model as? VisibleBehaviorForVideoModel)?.videoModel,
+              let view = model.view else { return }
+        model.halted = !view.isVisible(in: scrollView)
+    }
+}

MVMCoreUI/Atomic/Atoms/Views/Video/ScrollBehaviorForVideoModel.swift

@@ -0,0 +1,20 @@
+//
+//  ScrollBehaviorForVideoModel.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+open class ScrollBehaviorForVideoModel: PageBehaviorModelProtocol {
+    
+    public static var identifier: String = "visibleBehaviorForVideoModel"
+    public var shouldAllowMultipleInstances: Bool = true
+    public weak var videoModel: VideoModel?
+    
+    init(with videoModel: VideoModel) {
+        self.videoModel = videoModel
+    }
+}

MVMCoreUI/Atomic/Atoms/Views/Video/VideoModel.swift

@@ -8,7 +8,7 @@
 
 import Foundation
 
-open class VideoModel: MoleculeModelProtocol {
+open class VideoModel: MoleculeModelProtocol, PageBehaviorProtocolRequirer {
     public static var identifier = "video"
     public var backgroundColor: Color?
     public var video: String
@@ -39,8 +39,6 @@ open class VideoModel: MoleculeModelProtocol {
     /// Keeps a reference to the video data.
     public var videoDataManager: VideoDataManager
     
-    private weak var visibleBehavior: PageVisibilityClosureBehavior?
-    private weak var scrollBehavior: PageScrolledClosureBehavior?
     private var activeListener: Any?
     private var resignActiveListener: Any?
 
@@ -81,61 +79,16 @@ open class VideoModel: MoleculeModelProtocol {
         try container.encode(alwaysReset, forKey: .alwaysReset)
     }
     
+    public func getRequiredBehaviors() -> [PageBehaviorModelProtocol] {
+        return [VisibleBehaviorForVideoModel(with: self), ScrollBehaviorForVideoModel(with: self)]
+    }
+    
     open func addVisibilityHalting(for view: Video, delegateObject: MVMCoreUIDelegateObject?) {
         self.view = view
         halted = false
-        addVisibleBehavior(for: view, delegateObject: delegateObject)
-        addScrollBehavior(for: view, delegateObject: delegateObject)
         addActiveListener(for: view, delegateObject: delegateObject)
     }
     
-    /// Adds a behavior to pause the video on page hidden behavior and unpause if necessary on page shown.
-    open func addVisibleBehavior(for view: Video, delegateObject: MVMCoreUIDelegateObject?) {
-
-        let onShow = { [weak self] in
-            guard let self = self,
-                  let view = self.view,
-                  view.isVisibleInDelegate() else { return }
-            self.halted = false
-        }
-        let onHide: () -> Void = { [weak self] in
-            self?.halted = true
-        }
-        
-        guard visibleBehavior == nil else {
-            visibleBehavior?.pageShownHandler = onShow
-            visibleBehavior?.pageHiddenHandler = onHide
-            return
-        }
-
-        guard var delegate = delegateObject?.behaviorTemplateDelegate else { return }
-        let pauseBehavior = PageVisibilityClosureBehavior(with: onShow, onPageHiddenHandler: onHide)
-        delegate.add(behavior: pauseBehavior)
-        self.visibleBehavior = pauseBehavior
-    }
-    
-    /// Adds a behavior to pause the video if scrolled off of the page and unpause if necessary if scrolled on.
-    open func addScrollBehavior(for view: Video, delegateObject: MVMCoreUIDelegateObject?) {
-
-        let onScroll = { [weak self] (scrollView: UIScrollView) in
-            // If visible to not visible, pause video.
-            // If not visible to visible, unpause if needed, add visible behavior
-            guard let self = self,
-                  let view = self.view else { return }
-            self.halted = !view.isVisible(in: scrollView)
-        }
-        
-        guard scrollBehavior == nil else {
-            scrollBehavior?.pageScrolledHandler = onScroll
-            return
-        }
-
-        guard var delegate = delegateObject?.behaviorTemplateDelegate else { return }
-        let scrollBehavior = PageScrolledClosureBehavior(with: onScroll)
-        delegate.add(behavior: scrollBehavior)
-        self.scrollBehavior = scrollBehavior
-    }
-    
     open func addActiveListener(for view: Video, delegateObject: MVMCoreUIDelegateObject?) {
         removeActiveListener()
         

MVMCoreUI/Atomic/Atoms/Views/Video/VisibleBehaviorForVideo.swift

@@ -0,0 +1,28 @@
+//
+//  VisibleBehaviorForVideo.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+open class VisibleBehaviorForVideo: PageVisibilityBehavior {
+    var model: PageBehaviorModelProtocol
+    
+    required public init(model: PageBehaviorModelProtocol, delegateObject: MVMCoreUIDelegateObject?) {
+        self.model = model
+    }
+
+    public func onPageShown() {
+        guard let model = (model as? VisibleBehaviorForVideoModel)?.videoModel,
+              let view = model.view,
+              view.isVisibleInDelegate() else { return }
+        model.halted = false
+    }
+    
+    public func onPageHidden() {
+        (model as? VisibleBehaviorForVideoModel)?.videoModel?.halted = true
+    }
+}

MVMCoreUI/Atomic/Atoms/Views/Video/VisibleBehaviorForVideoModel.swift

@@ -0,0 +1,20 @@
+//
+//  VisibleBehaviorForVideoModel.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+open class VisibleBehaviorForVideoModel: PageBehaviorModelProtocol {
+    
+    public static var identifier: String = "visibleBehaviorForVideoModel"
+    public var shouldAllowMultipleInstances: Bool = true
+    public weak var videoModel: VideoModel?
+    
+    init(with videoModel: VideoModel) {
+        self.videoModel = videoModel
+    }
+}

MVMCoreUI/Atomic/MoleculeObjectMapping.swift

@@ -243,6 +243,7 @@ import Foundation
         MoleculeObjectMapping.shared()?.register(viewClass: NotificationView.self, viewModelClass: NotificationModel.self)
         MoleculeObjectMapping.shared()?.register(viewClass: CollapsableNotification.self, viewModelClass: CollapsableNotificationModel.self)
 
+        // TODO: move all of these out of here.
         // MARK:- Helper models
         try? ModelRegistry.register(RuleRequiredModel.self)
         try? ModelRegistry.register(RuleAnyRequiredModel.self)
@@ -261,7 +262,9 @@ import Foundation
         try? ModelRegistry.register(ActionTopNotificationModel.self)
         
         // MARK:- Behaviors
-        try? ModelRegistry.register(ScreenBrightnessModifierBehavior.self)
+        try? ModelRegistry.register(handler: ScreenBrightnessModifierBehavior.self, for: ScreenBrightnessModifierBehaviorModel.self)
+        try? ModelRegistry.register(handler: PageGetContactBehavior.self, for: PageGetContactBehaviorModel.self)
+        MoleculeObjectMapping.shared()?.register(viewClass: Label.self, viewModelClass: SwapMDNWithContactNameLabelModel.self)
     }
     
     /// Convenience function to get required modules for a give model

MVMCoreUI/Atomic/Molecules/VerticalCombinationViews/EyebrowHeadlineBodyLinkModel.swift

@@ -68,7 +68,7 @@ public class EyebrowHeadlineBodyLinkModel: MoleculeModelProtocol {
         let typeContainer = try decoder.container(keyedBy: CodingKeys.self)
         backgroundColor = try typeContainer.decodeIfPresent(Color.self, forKey: .backgroundColor)
         eyebrow = try typeContainer.decodeIfPresent(LabelModel.self, forKey: .eyebrow)
-        headline = try typeContainer.decodeIfPresent(LabelModel.self, forKey: .headline)
+        headline = try typeContainer.decodeMoleculeIfPresent(codingKey: .headline)
         body = try typeContainer.decodeIfPresent(LabelModel.self, forKey: .body)
         link = try typeContainer.decodeIfPresent(LinkModel.self, forKey: .link)
         setDefaults()
@@ -83,7 +83,7 @@ public class EyebrowHeadlineBodyLinkModel: MoleculeModelProtocol {
         try container.encode(moleculeName, forKey: .moleculeName)
         try container.encodeIfPresent(backgroundColor, forKey: .backgroundColor)
         try container.encodeIfPresent(eyebrow, forKey: .eyebrow)
-        try container.encodeIfPresent(headline, forKey: .headline)
+        try container.encodeModelIfPresent(headline, forKey: .headline)
         try container.encodeIfPresent(body, forKey: .body)
         try container.encodeIfPresent(link, forKey: .link)
     }

MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift

@@ -20,3 +20,17 @@ public extension MoleculeModelProtocol {
     
     static var categoryCodingKey: String { "moleculeName" }
 }
+
+extension KeyedDecodingContainer where Key: CodingKey {
+    /// Decodes to a registered molecule based on the identifier
+    public func decodeMoleculeIfPresent<T>(codingKey: KeyedDecodingContainer<K>.Key) throws -> T? {
+        
+        guard let model: MoleculeModelProtocol = try decodeModelIfPresent(codingKey: codingKey) else { return nil }
+        guard let modelT = model as? T else {
+            let message = "ModelRegistry Error wrong type: \(codingKey.stringValue)"
+            MVMCoreLoggingHandler.logDebugMessage(withDelegate: message)
+            throw ModelRegistry.Error.decoderOther(message: message)
+        }
+        return modelT
+    }
+}

MVMCoreUI/Atomic/Protocols/TemplateProtocol.swift

@@ -22,12 +22,15 @@ public extension TemplateProtocol where Self: ViewController {
         let data = try JSONSerialization.data(withJSONObject: pageJSON)
         let decoder = JSONDecoder()
         try decoder.add(delegateObject: delegateObjectIVar)
-        self.templateModel = try decodeTemplate(using: decoder, from: data)
-        self.model = templateModel as? MVMControllerModelProtocol
+        templateModel = try decodeTemplate(using: decoder, from: data)
+        model = templateModel as? MVMControllerModelProtocol
+        guard var model = model else { return }
+        model.traverseAndAdd(with: self)
+        var behaviorHandler = self
+        behaviorHandler.createBehaviors(for: model, delegateObject: delegateObjectIVar)
     }
     
     func decodeTemplate(using decoder: JSONDecoder, from data: Data) throws -> TemplateModel {
         return try decoder.decode(TemplateModel.self, from: data)
     }
-    
 }

MVMCoreUI/Atomic/Templates/TemplateModel.swift

@@ -29,7 +29,7 @@ import Foundation
     public var screenHeading: String?
     public var navigationBar: (NavigationItemModelProtocol & MoleculeModelProtocol)?
     public var formRules: [FormGroupRule]?
-    public var behaviors: [PageBehaviorProtocol]?
+    public var behaviors: [PageBehaviorModelProtocol]?
     
     public var tabBarHidden: Bool = false
     public var tabBarIndex: Int?

MVMCoreUI/BaseControllers/MVMControllerModelProtocol.swift

@@ -9,6 +9,6 @@
 
 import Foundation
 
-public protocol MVMControllerModelProtocol: TemplateModelProtocol, FormHolderModelProtocol, PageBehaviorsTemplateProtocol {
+public protocol MVMControllerModelProtocol: TemplateModelProtocol, FormHolderModelProtocol, PageBehaviorHandlerModelProtocol {
 
 }

MVMCoreUI/BaseControllers/ViewController.swift

@@ -8,7 +8,7 @@
 
 import UIKit
 
-@objc open class ViewController: UIViewController, MVMCoreViewControllerProtocol, MVMCoreViewManagerViewControllerProtocol, MoleculeDelegateProtocol, FormHolderProtocol, MVMCoreActionDelegateProtocol, MVMCoreLoadDelegateProtocol, UITextFieldDelegate, UITextViewDelegate, ObservingTextFieldDelegate, MVMCoreUIDetailViewProtocol, PageProtocol {
+@objc open class ViewController: UIViewController, MVMCoreViewControllerProtocol, MVMCoreViewManagerViewControllerProtocol, MoleculeDelegateProtocol, FormHolderProtocol, MVMCoreActionDelegateProtocol, MVMCoreLoadDelegateProtocol, UITextFieldDelegate, UITextViewDelegate, ObservingTextFieldDelegate, MVMCoreUIDetailViewProtocol, PageProtocol, PageBehaviorHandlerProtocol {
     
     //--------------------------------------------------
     // MARK: - Properties
@@ -34,6 +34,8 @@ import UIKit
     
     public var formValidator: FormValidator?
     
+    public var behaviors: [PageBehaviorProtocol]?
+    
     public var needsUpdateUI = false
     private var observingForResponses = false
     private var initialLoadFinished = false
@@ -620,6 +622,6 @@ import UIKit
     //--------------------------------------------------
     
     func executeBehaviors<T>(_ behaviorBlock:(_ behavior:T)->Void) {
-        model?.behaviors?.compactMap { $0 as? T }.forEach { behaviorBlock($0) }
+        behaviors?.compactMap { $0 as? T }.forEach { behaviorBlock($0) }
     }
 }

MVMCoreUI/Behaviors/PageBehaviorHandlerModelProtocol.swift

@@ -0,0 +1,36 @@
+//
+//  PageBehaviorHandlerModelProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+public protocol PageBehaviorHandlerModelProtocol {
+    var behaviors: [PageBehaviorModelProtocol]? { get set }
+}
+
+public extension PageBehaviorHandlerModelProtocol {
+    
+    /// Adds the behavior model to the behaviors if possible.
+    mutating func add(behavior: PageBehaviorModelProtocol) {
+        var newBehaviors = behaviors ?? []
+        guard !behavior.shouldAllowMultipleInstances,
+              !newBehaviors.contains(where: { $0.behaviorName == behavior.behaviorName
+              }) else { return }
+        newBehaviors.append(behavior)
+        self.behaviors = newBehaviors
+    }
+    
+    /// Traverses all models and adds any required behavior models.
+    mutating func traverseAndAdd(with page: PageProtocol?) {
+        PageGetContactBehavior.traverse(with: page, closure: { (model) in
+          guard let behaviorRequirer = model as? PageBehaviorProtocolRequirer,
+                var pageModel = page?.pageModel as? PageBehaviorHandlerModelProtocol else { return }
+            for behavior in behaviorRequirer.getRequiredBehaviors() {
+                pageModel.add(behavior: behavior)
+            }
+        })
+    }
+}
+

MVMCoreUI/Behaviors/PageBehaviorHandlerProtocol.swift

@@ -0,0 +1,30 @@
+//
+//  PageBehaviorHandlerProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+public protocol PageBehaviorHandlerProtocol {
+    var behaviors: [PageBehaviorProtocol]? { get set }
+}
+
+public extension PageBehaviorHandlerProtocol {
+    /// Creates the behaviors and sets the variable.
+    mutating func createBehaviors(for model: PageBehaviorHandlerModelProtocol, delegateObject: MVMCoreUIDelegateObject?) {
+        guard let behaviorModels = model.behaviors else {
+            behaviors = nil
+            return
+        }
+        var behaviors: [PageBehaviorProtocol] = []
+        for behaviorModel in behaviorModels {
+            guard let handlerType = ModelRegistry.getHandler(behaviorModel) as? PageBehaviorProtocol.Type else { continue }
+            let behavior = handlerType.init(model: behaviorModel, delegateObject: delegateObject)
+            behaviors.append(behavior)
+        }
+        self.behaviors = behaviors.count > 0 ? behaviors : nil
+    }
+}

MVMCoreUI/Behaviors/PageBehaviorModelProtocol.swift

@@ -0,0 +1,35 @@
+//
+//  PageBehaviorModelProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+public protocol PageBehaviorModelProtocol: ModelProtocol {
+    
+    /// The type of rule
+    var behaviorName: String { get }
+    
+    /// If the behavior should allow multiple instances
+    var shouldAllowMultipleInstances: Bool { get }
+}
+
+public extension PageBehaviorModelProtocol {
+    
+    var behaviorName: String {
+        get { type(of:self).identifier }
+    }
+    
+    static var shouldAllowMultipleInstances: Bool {
+        get { true }
+    }
+    
+    static var categoryCodingKey: String {
+        "behaviorName"
+    }
+    
+    static var categoryName: String {
+        "\(PageBehaviorModelProtocol.self)"
+    }
+}

MVMCoreUI/Behaviors/PageBehaviorProtocol.swift

@@ -0,0 +1,34 @@
+//
+//  PageBehaviorProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Kyle on 5/8/20.
+//  Copyright © 2020 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+public protocol PageBehaviorProtocol: ModelHandlerProtocol {
+    
+    /// Initializes the behavior with the model
+    init(model: PageBehaviorModelProtocol, delegateObject: MVMCoreUIDelegateObject?)
+}
+
+public protocol PageVisibilityBehavior: PageBehaviorProtocol {
+    
+    func onPageShown()
+    func onPageHidden()
+}
+
+public protocol PageScrolledBehavior: PageBehaviorProtocol {
+    
+    func pageScrolled(scrollView: UIScrollView)    
+}
+
+public extension MVMCoreUIDelegateObject {
+    weak var behaviorTemplateDelegate: (PageBehaviorHandlerProtocol & NSObjectProtocol)? {
+        get {
+            return (moleculeDelegate as? PageProtocol)?.pageModel as? (PageBehaviorHandlerProtocol & NSObjectProtocol)
+        }
+    }
+}

MVMCoreUI/Behaviors/PageBehaviorProtocolRequirer.swift

@@ -0,0 +1,11 @@
+//
+//  PageBehaviorProtocolRequirer.swift
+//  MVMCoreUI
+//
+//  Created by Scott Pfeil on 3/29/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+public protocol PageBehaviorProtocolRequirer {
+    func getRequiredBehaviors() -> [PageBehaviorModelProtocol]
+}

MVMCoreUI/Behaviors/PageScrolledClosureBehavior.swift

@@ -1,33 +0,0 @@
-//
-//  PageScrolledClosureBehavior.swift
-//  MVMCoreUI
-//
-//  Created by Scott Pfeil on 2/11/21.
-//  Copyright © 2021 Verizon Wireless. All rights reserved.
-//
-
-import Foundation
-
-public class PageScrolledClosureBehavior: PageScrolledBehavior {
-    
-    public static var identifier = "pageScrolledClosureBehavior"
-    
-    public var pageScrolledHandler: (_ scrollView: UIScrollView) -> Void
-
-    public init(with onPageScrolledHandler: @escaping (_ scrollView: UIScrollView) -> Void) {
-        self.pageScrolledHandler = onPageScrolledHandler
-    }
-    
-    // This class is not meant to be decoded and encoded really.
-    public required init(from decoder: Decoder) throws {
-        throw ModelRegistry.Error.decoderOther(message: "PageScrolledClosureBehavior does not decode.")
-    }
-    
-    public func encode(to encoder: Encoder) throws {
-        throw ModelRegistry.Error.decoderOther(message: "PageScrolledClosureBehavior does not encode.")
-    }
-    
-    public func pageScrolled(scrollView: UIScrollView) {
-        pageScrolledHandler(scrollView)
-    }
-}

MVMCoreUI/Behaviors/PageVisibilityClosureBehavior.swift

@@ -1,40 +0,0 @@
-//
-//  PageVisibilityClosureBehavior.swift
-//  MVMCoreUI
-//
-//  Created by Scott Pfeil on 2/11/21.
-//  Copyright © 2021 Verizon Wireless. All rights reserved.
-//
-
-import Foundation
-
-public class PageVisibilityClosureBehavior: PageVisibilityBehavior {
-    
-    public static var identifier = "pageVisibilityClosureBehavior"
-    
-    public var pageShownHandler: () -> Void
-    public var pageHiddenHandler: () -> Void
-
-    public init(with onPageShownHandler: @escaping () -> Void, onPageHiddenHandler: @escaping () -> Void) {
-        self.pageShownHandler = onPageShownHandler
-        self.pageHiddenHandler = onPageHiddenHandler
-    }
-    
-    // This class is not meant to be decoded and encoded really.
-    public required init(from decoder: Decoder) throws {
-        throw ModelRegistry.Error.decoderOther(message: "PageVisibilityClosureBehavior does not decode.")
-    }
-    
-    public func encode(to encoder: Encoder) throws {
-        throw ModelRegistry.Error.decoderOther(message: "PageVisibilityClosureBehavior does not encode.")
-    }
-            
-    //MARK:- PageVisibilityBehavior
-    public func onPageShown() {
-        pageShownHandler()
-    }
-    
-    public func onPageHidden() {
-        pageHiddenHandler()
-    }
-}

MVMCoreUI/Behaviors/ScreenBrightnessModifierBehavior.swift

@@ -6,52 +6,14 @@
 //  Copyright © 2020 Verizon Wireless. All rights reserved.
 //
 
-public class ScreenBrightnessModifierBehavior: PageVisibilityBehavior {
-    
+public class ScreenBrightnessModifierBehaviorModel: PageBehaviorModelProtocol {
+    public var shouldAllowMultipleInstances: Bool = false
     public static var identifier = "screenBrightnessModifier"
-    
     @Clamping(range: 0...1) var screenBrightness: CGFloat
-    
     var originalScreenBrightness: CGFloat?
     
-    //MARK:- PageVisibilityBehavior
-    
-    public func onPageShown() {
-        changeScreenBrightness()
-    }
-    
-    public func onPageHidden() {
-        restoreScreenBrightness()
-    }
-    
-    //MARK:- Behavior
-    
-    func changeScreenBrightness() {
-        guard originalScreenBrightness == nil else { return }
-        originalScreenBrightness = UIScreen.main.brightness
-        UIScreen.main.brightness = screenBrightness
-        NotificationCenter.default.addObserver(self, selector: #selector(willResignActive), name: UIApplication.willResignActiveNotification, object: nil)
-    }
-    
-    func restoreScreenBrightness() {
-        guard let originalScreenBrightness = originalScreenBrightness else { return }
-        UIScreen.main.brightness = originalScreenBrightness
-        self.originalScreenBrightness = nil
-        NotificationCenter.default.removeObserver(self, name: UIApplication.willResignActiveNotification, object: nil)
-    }
-    
-    @objc func willResignActive() {
-        restoreScreenBrightness()
-        NotificationCenter.default.addObserver(self, selector: #selector(didBecomeActive), name: UIApplication.didBecomeActiveNotification, object: nil)
-    }
-    
-    @objc func didBecomeActive() {
-        NotificationCenter.default.removeObserver(self, name: UIApplication.didBecomeActiveNotification, object: nil)
-        changeScreenBrightness()
-    }
-
     //MARK:- Codable
-    
+
     private enum CodingKeys: String, CodingKey {
         case screenBrightness
     }
@@ -66,3 +28,49 @@ public class ScreenBrightnessModifierBehavior: PageVisibilityBehavior {
         try container.encode(screenBrightness, forKey: .screenBrightness)
     }
 }
+
+public class ScreenBrightnessModifierBehavior: PageVisibilityBehavior {
+    var model: PageBehaviorModelProtocol
+    
+    required public init(model: PageBehaviorModelProtocol, delegateObject: MVMCoreUIDelegateObject?) {
+        self.model = model
+    }
+    
+    //MARK:- PageVisibilityBehavior
+    
+    public func onPageShown() {
+        changeScreenBrightness()
+    }
+    
+    public func onPageHidden() {
+        restoreScreenBrightness()
+    }
+    
+    //MARK:- Behavior
+    
+    func changeScreenBrightness() {
+        guard let model = model as? ScreenBrightnessModifierBehaviorModel,
+              model.originalScreenBrightness == nil else { return }
+        model.originalScreenBrightness = UIScreen.main.brightness
+        UIScreen.main.brightness = model.screenBrightness
+        NotificationCenter.default.addObserver(self, selector: #selector(willResignActive), name: UIApplication.willResignActiveNotification, object: nil)
+    }
+    
+    func restoreScreenBrightness() {
+        guard let model = model as? ScreenBrightnessModifierBehaviorModel,
+              let originalScreenBrightness = model.originalScreenBrightness else { return }
+        UIScreen.main.brightness = originalScreenBrightness
+        model.originalScreenBrightness = nil
+        NotificationCenter.default.removeObserver(self, name: UIApplication.willResignActiveNotification, object: nil)
+    }
+    
+    @objc func willResignActive() {
+        restoreScreenBrightness()
+        NotificationCenter.default.addObserver(self, selector: #selector(didBecomeActive), name: UIApplication.didBecomeActiveNotification, object: nil)
+    }
+    
+    @objc func didBecomeActive() {
+        NotificationCenter.default.removeObserver(self, name: UIApplication.didBecomeActiveNotification, object: nil)
+        changeScreenBrightness()
+    }
+}