Added documentation for Radio/Check things

Sources/iOS/BaseButtonGroup.swift

@@ -6,7 +6,11 @@
 //  Copyright © 2017 CosmicMind, Inc. All rights reserved.
 //
 
+import UIKit
+
 open class BaseButtonGroup<T: Button>: View {
+    
+    /// Holds reference to buttons within the group.
     open var buttons: [T] = [] {
         didSet {
             oldValue.forEach {
@@ -19,6 +23,9 @@ open class BaseButtonGroup<T: Button>: View {
         }
     }
     
+    /// Initializes group with the provided buttons.
+    ///
+    /// - Parameter buttons: Array of buttons.
     public convenience init(buttons: [T]) {
         self.init(frame: .zero)
         defer { self.buttons = buttons } // defer allows didSet to be called

Sources/iOS/BaseIconLayerButton.swift

@@ -14,18 +14,28 @@ open class BaseIconLayerButton: Button {
     class var iconLayer: BaseIconLayer { fatalError("Has to be implemented by subclasses") }
     lazy var iconLayer: BaseIconLayer = { return type(of: self).iconLayer }()
     
+    /// A Boolean value indicating whether the button is in the selected state
+    ///
+    /// Use `setSelected(_:, animated:)` if the state change needs to be animated
     open override var isSelected: Bool {
         didSet {
             iconLayer.setSelected(isSelected, animated: false)
         }
     }
     
+    /// A Boolean value indicating whether the control is enabled.
     open override var isEnabled: Bool {
         didSet {
             iconLayer.isEnabled = isEnabled
         }
     }
     
+    
+    /// Sets the color of the icon to use for the specified state.
+    ///
+    /// - Parameters:
+    ///   - color: The color of the icon to use for the specified state.
+    ///   - state: The state that uses the specified color. Supports only (.normal, .selected, .disabled)
     open func setIconColor(_ color: UIColor, for state: UIControlState) {
         switch state {
         case .normal:
@@ -38,7 +48,11 @@ open class BaseIconLayerButton: Button {
             fatalError("unsupported state")
         }
     }
-
+    
+    /// Returns the icon color used for a state.
+    ///
+    /// - Parameter state: The state that uses the icon color. Supports only (.normal, .selected, .disabled)
+    /// - Returns: The color of the title for the specified state.
     open func iconColor(for state: UIControlState) -> UIColor {
         switch state {
         case .normal:
@@ -52,7 +66,15 @@ open class BaseIconLayerButton: Button {
         }
     }
     
+    /// A Boolean value indicating whether the button is being animated
     open var isAnimating: Bool { return iconLayer.isAnimating }
+    
+    
+    /// Sets the `selected` state of the button, optionally animating the transition.
+    ///
+    /// - Parameters:
+    ///   - isSelected: A Boolean value indicating new `selected` state
+    ///   - animated: true if the state change should be animated, otherwise false.
     open func setSelected(_ isSelected: Bool, animated: Bool) {
         guard !isAnimating else { return }
         iconLayer.setSelected(isSelected, animated: animated)
@@ -99,7 +121,7 @@ open class BaseIconLayerButton: Button {
         visualLayer.frame.center = iconLayer.frame.center
         visualLayer.cornerRadius = s / 2
     }
-
+    
     private let margin: CGFloat = 5
     private let iconSize: CGFloat = 16
 }

Sources/iOS/CheckButton.swift

@@ -11,6 +11,7 @@ import UIKit
 open class CheckButton: BaseIconLayerButton {
     class override var iconLayer: BaseIconLayer { return CheckBoxLayer() }
     
+    /// Color of the checkmark (✓)
     open var checkmarkColor: UIColor {
         get {
             return (iconLayer as! CheckBoxLayer).checkmarkColor

Sources/iOS/CheckButtonGroup.swift

@@ -6,16 +6,32 @@
 //  Copyright © 2017 CosmicMind, Inc. All rights reserved.
 //
 
+/// Lays out provided check buttons within itself.
+///
+/// Unlike RadioButtonGroup, checking one check button that belongs to a check group *does not* unchecks any previously checked
+/// check button within the same group. Intially, all of the check buttons are unchecked.
+///
+/// The buttons are layout out by `Grid` system, so that changing properites of grid instance
+/// (e.g interimSpace) are reflected.
 open class CheckButtonGroup: BaseButtonGroup<CheckButton> {
+    
+    /// Initializes CheckButtonGroup with an array of check buttons each having
+    /// title equal to corresponding string in the `titles` parameter.
+    ///
+    /// - Parameter titles: An array of title strings
     public convenience init(titles: [String]) {
         let buttons = titles.map { CheckButton(title: $0) }
         self.init(buttons: buttons)
     }
     
+    /// Returns all selected check buttons within the group
+    /// or empty array if none is seleceted.
     open var selecetedButtons: [CheckButton] {
         return buttons.filter { $0.isSelected }
     }
     
+    /// Returns indexes of all selected check buttons within the group
+    /// or empty array if none is seleceted.
     open var selectedIndices: [Int] {
         return selecetedButtons.map { buttons.index(of: $0)! }
     }

Sources/iOS/RadioButtonGroup.swift

@@ -6,16 +6,33 @@
 //  Copyright © 2017 CosmicMind, Inc. All rights reserved.
 //
 
+
+/// Lays out provided radio buttons within itself.
+///
+/// Checking one radio button that belongs to a radio group unchecks any previously checked
+/// radio button within the same group. Intially, all of the radio buttons are unchecked.
+///
+/// The buttons are layout out by `Grid` system, so that changing properites of grid instance
+/// (e.g interimSpace) are reflected.
 open class RadioButtonGroup: BaseButtonGroup<RadioButton> {
+    
+    /// Initializes RadioButtonGroup with an array of radio buttons each having
+    /// title equal to corresponding string in the `titles` parameter.
+    ///
+    /// - Parameter titles: An array of title strings.
     public convenience init(titles: [String]) {
         let buttons = titles.map { RadioButton(title: $0) }
         self.init(buttons: buttons)
     }
     
+    /// Returns selected radio button within the group.
+    /// If none is selected (e.g in initial state), nil is returned.
     open var selectedButton: RadioButton? {
         return buttons.first { $0.isSelected }
     }
     
+    /// Returns index of selected radio button within the group.
+    /// If none is selected (e.g in initial state), -1 is returned.
     open var selectedIndex: Int {
         guard let b = selectedButton else { return -1 }
         return buttons.index(of: b)!