initial progress

MVMCoreUI.xcodeproj/project.pbxproj

@@ -123,6 +123,8 @@
 		0AE98BB523FF18D2004C5109 /* Arrow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0AE98BB423FF18D2004C5109 /* Arrow.swift */; };
 		0AE98BB723FF18E9004C5109 /* ArrowModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0AE98BB623FF18E9004C5109 /* ArrowModel.swift */; };
 		279B1569242BBC2F00921D6C /* ActionModelAdapter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 279B1568242BBC2F00921D6C /* ActionModelAdapter.swift */; };
+		27F6B08826051831008529AA /* MoleculeTreeTraversalProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F6B08726051831008529AA /* MoleculeTreeTraversalProtocol.swift */; };
+		27F6B08C26052AFF008529AA /* ParentMoleculeModelProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F6B08B26052AFF008529AA /* ParentMoleculeModelProtocol.swift */; };
 		27F973532466074500CAB5C5 /* PageBehavior.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F973522466074500CAB5C5 /* PageBehavior.swift */; };
 		27F9736A246750BE00CAB5C5 /* ScreenBrightnessModifierBehavior.swift in Sources */ = {isa = PBXBuildFile; fileRef = 27F97369246750BE00CAB5C5 /* ScreenBrightnessModifierBehavior.swift */; };
 		31BE15CB23D8924D00452370 /* CheckboxLabelModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 31BE15C923D8924C00452370 /* CheckboxLabelModel.swift */; };
@@ -679,6 +681,8 @@
 		0AE98BB423FF18D2004C5109 /* Arrow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Arrow.swift; sourceTree = "<group>"; };
 		0AE98BB623FF18E9004C5109 /* ArrowModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ArrowModel.swift; sourceTree = "<group>"; };
 		279B1568242BBC2F00921D6C /* ActionModelAdapter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ActionModelAdapter.swift; sourceTree = "<group>"; };
+		27F6B08726051831008529AA /* MoleculeTreeTraversalProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MoleculeTreeTraversalProtocol.swift; sourceTree = "<group>"; };
+		27F6B08B26052AFF008529AA /* ParentMoleculeModelProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ParentMoleculeModelProtocol.swift; sourceTree = "<group>"; };
 		27F973522466074500CAB5C5 /* PageBehavior.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PageBehavior.swift; sourceTree = "<group>"; };
 		27F97369246750BE00CAB5C5 /* ScreenBrightnessModifierBehavior.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScreenBrightnessModifierBehavior.swift; sourceTree = "<group>"; };
 		31BE15C923D8924C00452370 /* CheckboxLabelModel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CheckboxLabelModel.swift; sourceTree = "<group>"; };
@@ -1147,6 +1151,7 @@
 				D2092354244FA0FD0044AD09 /* ThreeLayerTemplateModelProtocol.swift */,
 				D2509ED02472ED9B001BFB9D /* NavigationItemModelProtocol.swift */,
 				D28BA74C248589C800B75CB8 /* TabPageModelProtocol.swift */,
+				27F6B08B26052AFF008529AA /* ParentMoleculeModelProtocol.swift */,
 			);
 			path = ModelProtocols;
 			sourceTree = "<group>";
@@ -2275,6 +2280,7 @@
 			isa = PBXGroup;
 			children = (
 				012A88C7238DB02000FE3DA1 /* MoleculeDelegateProtocol.swift */,
+				27F6B08726051831008529AA /* MoleculeTreeTraversalProtocol.swift */,
 				017BEB47236230DB0024EF95 /* MoleculeViewProtocol.swift */,
 				D20F3B43252E00E4004B3F56 /* PageProtocol.swift */,
 				012A88AC238C418100FE3DA1 /* TemplateProtocol.swift */,
@@ -2820,6 +2826,7 @@
 				0AE98BB323FF0934004C5109 /* ExternalLinkModel.swift in Sources */,
 				D20FB165241A5D75004AFC3A /* NavigationItemModel.swift in Sources */,
 				AA2AD118244EE48C00BBFFE3 /* ListDeviceComplexLinkMediumModel.swift in Sources */,
+				27F6B08826051831008529AA /* MoleculeTreeTraversalProtocol.swift in Sources */,
 				D2D3957A252FDBB300047B11 /* ModalSectionListTemplate.swift in Sources */,
 				DB06250B2293456500B72DD3 /* LeftRightLabelView.swift in Sources */,
 				D28BA741248025A300B75CB8 /* TabBarModel.swift in Sources */,
@@ -2945,6 +2952,7 @@
 				8D4687E2242E2DE400802879 /* ListFourColumnDataUsageListItemModel.swift in Sources */,
 				D29E28DD23D7404C00ACEA85 /* ContainerHelper.swift in Sources */,
 				012A88C2238D7BCA00FE3DA1 /* CarouselItemModel.swift in Sources */,
+				27F6B08C26052AFF008529AA /* ParentMoleculeModelProtocol.swift in Sources */,
 				0AB764D324460FA400E7FE72 /* UIPickerView+Extension.swift in Sources */,
 				D29DF29E21E7AE3B003B2FB9 /* MFStyler.m in Sources */,
 				94C661D923CCF4B400D9FE5B /* LeftRightLabelModel.swift in Sources */,

MVMCoreUI/Atomic/Molecules/Items/TabsListItemModel.swift

@@ -12,7 +12,7 @@ public class TabsListItemModel: ListItemModel, MoleculeModelProtocol {
     public static var identifier: String = "tabsListItem"
     var tabs: TabsModel
     var molecules: [[ListItemModelProtocol & MoleculeModelProtocol]]
-
+    
     private enum CodingKeys: String, CodingKey {
         case moleculeName
         case tabs

MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerModel.swift

@@ -48,4 +48,14 @@ open class MoleculeContainerModel: ContainerModel, MoleculeContainerModelProtoco
         try container.encodeModel(molecule, forKey: .molecule)
         try container.encodeIfPresent(backgroundColor, forKey: .backgroundColor)
     }
+    
+    public func reduceDepthFirstTraverse<Result>(initialResult:Result, nextPartialResult: (Result, MoleculeModelProtocol)->Result) -> Result {
+        let result = nextPartialResult(initialResult, molecule)
+        return nextPartialResult(result, self)
+    }
+    
+    public func depthFirstTraverse(_ cb: (MoleculeModelProtocol)->Void) {
+        cb(molecule)
+        cb(self)
+    }
 }

MVMCoreUI/Atomic/Molecules/OtherContainers/MoleculeContainerProtocol.swift

@@ -8,6 +8,14 @@
 
 import Foundation
 
-public protocol MoleculeContainerModelProtocol: ContainerModelProtocol {
+public protocol MoleculeContainerModelProtocol: ContainerModelProtocol, ParentMoleculeModelProtocol {
     var molecule: MoleculeModelProtocol { get set }
 }
+
+public extension MoleculeContainerModelProtocol {
+    
+    var children: [MoleculeModelProtocol] {
+        return [molecule]
+    }
+    
+}

MVMCoreUI/Atomic/Organisms/StackModel.swift

@@ -7,7 +7,8 @@
 //
 
 
-@objcMembers public class StackModel: ContainerModel, StackModelProtocol, MoleculeModelProtocol {
+@objcMembers public class StackModel: ContainerModel, StackModelProtocol {
+    
     //--------------------------------------------------
     // MARK: - Properties
     //--------------------------------------------------
@@ -24,6 +25,10 @@
     public var spacing: CGFloat = StackModel.defaultSpacing
     public var useStackSpacingBeforeFirstItem = false
     
+    public var children: [MoleculeModelProtocol] {
+        return molecules
+    }
+    
     //--------------------------------------------------
     // MARK: - Initializer
     //--------------------------------------------------
@@ -77,4 +82,5 @@
         try container.encode(moleculeName, forKey: .moleculeName)
         try container.encodeIfPresent(backgroundColor, forKey: .backgroundColor)
     }
+    
 }

MVMCoreUI/Atomic/Organisms/StackModelProtocol.swift

@@ -8,9 +8,15 @@
 
 import Foundation
 
-public protocol StackModelProtocol {
+public protocol StackModelProtocol: ParentMoleculeModelProtocol {
     var molecules: [StackItemModelProtocol & MoleculeModelProtocol] { get set }
     var axis: NSLayoutConstraint.Axis { get set }
     var spacing: CGFloat { get set }
     var useStackSpacingBeforeFirstItem: Bool { get set }
 }
+
+extension StackModelProtocol {
+    
+    public var children: [MoleculeModelProtocol] { return molecules }
+    
+}

MVMCoreUI/Atomic/Protocols/ModelProtocols/MoleculeModelProtocol.swift

@@ -7,7 +7,7 @@ public enum MolecularError: Swift.Error {
 }
 
 
-public protocol MoleculeModelProtocol: ModelProtocol, AccessibilityModelProtocol {
+public protocol MoleculeModelProtocol: ModelProtocol, AccessibilityModelProtocol, MoleculeTreeTraversalProtocol {
     var moleculeName: String { get }
     var backgroundColor: Color? { get set }
 }
@@ -20,3 +20,54 @@ public extension MoleculeModelProtocol {
     
     static var categoryCodingKey: String { "moleculeName" }
 }
+
+public extension MoleculeModelProtocol {
+    
+    func reduceDepthFirstTraverse<Result>(initialResult:Result, nextPartialResult: (Result, MoleculeModelProtocol)->Result) -> Result {
+        
+        return nextPartialResult(initialResult, self)
+    }
+    
+    func depthFirstTraverse(callback: (MoleculeModelProtocol)->Void) {
+        callback(self)
+    }
+    
+}
+
+public extension Array where Element == MoleculeModelProtocol {
+    
+    func reduceDepthFirstTraverse<Result>(initialResult:Result, nextPartialResult: (Result, MoleculeModelProtocol)->Result) -> Result {
+        return reduce(initialResult) { (result, molecule) -> Result in
+            return molecule.reduceDepthFirstTraverse(initialResult: result, nextPartialResult: nextPartialResult)
+        }
+    }
+    
+    func depthFirstTraverse(callback: (MoleculeModelProtocol)->Void) {
+        forEach { (molecule) in
+            molecule.depthFirstTraverse(callback: callback)
+        }
+    }
+}
+
+// Would prefer these to be defined in MoleculeTreeTraversalProtocol that MoleculeModelProtocol inherits.
+public extension Array where Element == MoleculeModelProtocol {
+    
+    func countMolecules() -> Int {
+        return reduce(0) { (accumulator, molecule) in
+            return accumulator + molecule.countMolecules()
+        }
+    }
+    
+    func printMolecules() {
+        forEach { (molecule) in
+            molecule.printMolecules()
+        }
+    }
+    
+    func allMoleculesOfType<T>() -> [T] {
+        return reduce([]) { (accumulator, molecule) in
+            return accumulator + molecule.allMoleculesOfType()
+        }
+    }
+    
+}

MVMCoreUI/Atomic/Protocols/ModelProtocols/ParentMoleculeModelProtocol.swift

@@ -0,0 +1,39 @@
+//
+//  ParentModelProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Kyle on 3/19/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+import Foundation
+
+public protocol ParentMoleculeModelProtocol: MoleculeModelProtocol {
+    
+    var children: [MoleculeModelProtocol] { get }
+    
+}
+
+public extension ParentMoleculeModelProtocol {
+    
+    func reduceDepthFirstTraverse<Result>(initialResult: Result, nextPartialResult: (Result, MoleculeModelProtocol) -> Result) -> Result {
+        
+        let result = children.reduce(initialResult) { (result, molecule) -> Result in
+            if let additionalParent = molecule as? ParentMoleculeModelProtocol {
+                return additionalParent.reduceDepthFirstTraverse(initialResult: result, nextPartialResult: nextPartialResult)
+            }
+            return molecule.reduceDepthFirstTraverse(initialResult: result, nextPartialResult: nextPartialResult)
+        }
+        return nextPartialResult(result, self)
+    }
+    
+    func depthFirstTraverse(callback: (MoleculeModelProtocol)->Void) {
+        children.forEach { (molecule) in
+            if let additionalParent = molecule as? ParentMoleculeModelProtocol {
+                additionalParent.depthFirstTraverse(callback: callback)
+            }
+            molecule.depthFirstTraverse(callback: callback)
+        }
+        callback(self)
+    }
+}

MVMCoreUI/Atomic/Protocols/ModelProtocols/TemplateModelProtocol.swift

@@ -11,6 +11,7 @@ import Foundation
 
 public protocol TemplateModelProtocol: PageModelProtocol, ModelProtocol {
     var template: String { get }
+    var rootMolecules: [MoleculeModelProtocol] { get }
 }
 
 public extension TemplateModelProtocol {

MVMCoreUI/Atomic/Protocols/MoleculeTreeTraversalProtocol.swift

@@ -0,0 +1,48 @@
+
+//
+//  TreeTraversalProtocol.swift
+//  MVMCoreUI
+//
+//  Created by Kyle on 3/19/21.
+//  Copyright © 2021 Verizon Wireless. All rights reserved.
+//
+
+public protocol MoleculeTreeTraversalProtocol {
+    
+    // Future options -- Parent first depth first, leaves only.
+    
+    func reduceDepthFirstTraverse<Result>(initialResult:Result, nextPartialResult: (Result, MoleculeModelProtocol)->Result) -> Result
+    
+    func depthFirstTraverse(callback: (MoleculeModelProtocol)->Void)
+    
+    //func breadthFirstTraverse()
+}
+
+//
+// Helper Extensions
+//
+
+extension MoleculeTreeTraversalProtocol {
+    
+    func countMolecules() -> Int {
+        return reduceDepthFirstTraverse(initialResult: 0) { (accumulator, molecule) in
+            return accumulator + 1
+        }
+    }
+    
+    func printMolecules() {
+        depthFirstTraverse { (molecule) in
+            print(molecule)
+        }
+    }
+    
+    func allMoleculesOfType<T>() -> [T] {
+        return reduceDepthFirstTraverse(initialResult: []) { (accumulator, molecule) in
+            if let typedMolecule = molecule as? T {
+                return accumulator + [typedMolecule]
+            }
+            return accumulator
+        }
+    }
+    
+}

MVMCoreUI/Atomic/Templates/CollectionTemplateModel.swift

@@ -18,6 +18,13 @@ import Foundation
     }
     public var molecules: [CollectionItemModelProtocol & MoleculeModelProtocol]?
     public var columns: Int?
+    
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        if let molecules = molecules {
+            return super.rootMolecules + molecules
+        }
+        return super.rootMolecules
+    }
 
     //--------------------------------------------------
     // MARK: - Initializer

MVMCoreUI/Atomic/Templates/ListPageTemplateModel.swift

@@ -20,6 +20,13 @@ import Foundation
     public var line: LineModel?
     public var scrollToRowIndex: Int?
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        if let molecules = molecules {
+            return super.rootMolecules + molecules
+        }
+        return super.rootMolecules
+    }
+    
     /// This template requires content.
     func validateModelHasContent() throws {
         if header == nil,

MVMCoreUI/Atomic/Templates/TemplateModel.swift

@@ -30,6 +30,7 @@ import Foundation
     public var navigationBar: (NavigationItemModelProtocol & MoleculeModelProtocol)?
     public var formRules: [FormGroupRule]?
     public var behaviors: [PageBehaviorProtocol]?
+    public var rootMolecules: [MoleculeModelProtocol] { [] }
     
     public var tabBarHidden: Bool = false
     public var tabBarIndex: Int?

MVMCoreUI/Atomic/Templates/ThreeLayerModelBase.swift

@@ -9,11 +9,23 @@
 import Foundation
 
 @objcMembers open class ThreeLayerModelBase: TemplateModel, ThreeLayerTemplateModelProtocol {
+    
     public var anchorHeader: Bool = false
     public var header: MoleculeModelProtocol?
     public var anchorFooter: Bool = false
     public var footer: MoleculeModelProtocol?
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        var rootMolecules:[MoleculeModelProtocol] = []
+        if let header = header {
+            rootMolecules.append(header)
+        }
+        if let footer = footer {
+            rootMolecules.append(footer)
+        }
+        return rootMolecules
+    }
+    
     public override init(pageType: String) {
         super.init(pageType: pageType)
     }

MVMCoreUI/Atomic/Templates/ThreeLayerPageTemplateModel.swift

@@ -14,6 +14,13 @@ import Foundation
     }
     public var middle: MoleculeModelProtocol?
     
+    public override var rootMolecules: [MoleculeModelProtocol] {
+        if let middle = middle {
+            return super.rootMolecules + [middle]
+        }
+        return super.rootMolecules
+    }
+    
     public init(pageType: String, header: MoleculeModelProtocol?, middle: MoleculeModelProtocol?, footer: MoleculeModelProtocol?) {
         super.init(pageType: pageType)
         self.header = header

MVMCoreUI/BaseControllers/ViewController.swift

@@ -336,6 +336,13 @@ import UIKit
             initialLoad()
         }
         
+        print("total molecules in tree: \(model?.rootMolecules.countMolecules() ?? 0)")
+        
+        model?.rootMolecules.printMolecules()
+        
+        let allVideoMolecules:[BGVideoImageMoleculeModel] = model?.rootMolecules.allMoleculesOfType() ?? []
+        print("video molecules: \(allVideoMolecules.count)")
+        
         handleNewDataAndUpdateUI()
     }