Made buttons themeable

Sources/iOS/BaseIconLayerButton.swift

@@ -142,6 +142,14 @@ open class BaseIconLayerButton: Button {
             reloadImage()
         }
     }
+  
+  open override func apply(theme: Theme) {
+    super.apply(theme: theme)
+    
+    setIconColor(theme.secondary, for: .selected)
+    setIconColor(theme.onSurface.withAlphaComponent(0.38), for: .normal)
+    titleColor = theme.onSurface.withAlphaComponent(0.60)
+  }
     
     
     /// This might be considered as a hackish way, but it's just manipulation

Sources/iOS/Button.swift

@@ -31,7 +31,7 @@
 import UIKit
 import Motion
 
-open class Button: UIButton, Pulseable, PulseableLayer {
+open class Button: UIButton, Pulseable, PulseableLayer, Themeable {
   /**
    A CAShapeLayer used to manage elements that would be affected by
    the clipToBounds property of the backing layer. For example, this
@@ -281,7 +281,14 @@ open class Button: UIButton, Pulseable, PulseableLayer {
     contentScaleFactor = Screen.scale
     prepareVisualLayer()
     preparePulse()
+    applyCurrentTheme()
   }
+  
+  /**
+   Applies given theme to the view.
+   - Parameter theme: A Theme.
+  */
+  open func apply(theme: Theme) { }
 }
 
 extension Button {

Sources/iOS/CheckButton.swift

@@ -31,6 +31,12 @@ open class CheckButton: BaseIconLayerButton {
         guard !isAnimating else { return }
         setSelected(!isSelected, animated: true)
     }
+  
+  open override func apply(theme: Theme) {
+    super.apply(theme: theme)
+    
+    checkmarkColor = theme.onSecondary
+  }
 }
 
 internal class CheckBoxLayer: BaseIconLayer {
@@ -86,6 +92,7 @@ internal class CheckBoxLayer: BaseIconLayer {
         if isSelected {
             borderLayer.borderWidth = borderLayerNormalBorderWidth
         } else {
+            borderLayer.borderWidth = 0
             borderLayer.backgroundColor = (isEnabled ? normalColor : disabledColor).cgColor
             checkMarkLeftLayer.strokeEnd = 1
             checkMarkRightLayer.strokeEnd = 1

Sources/iOS/FABButton.swift

@@ -36,6 +36,14 @@ open class FABButton: Button {
     depthPreset = .depth1
     shapePreset = .circle
     pulseAnimation = .centerWithBacking
-    backgroundColor = .white
+  }
+  
+  open override func apply(theme: Theme) {
+    super.apply(theme: theme)
+    
+    backgroundColor = theme.secondary
+    titleColor = theme.onSecondary
+    tintColor = theme.onSecondary
+    pulseColor = theme.onSecondary
   }
 }

Sources/iOS/FlatButton.swift

@@ -35,4 +35,13 @@ open class FlatButton: Button {
     super.prepare()
     cornerRadiusPreset = .cornerRadius1
   }
+  
+  open override func apply(theme: Theme) {
+    super.apply(theme: theme)
+    
+    backgroundColor = .clear
+    titleColor = theme.secondary
+    tintColor = theme.secondary
+    pulseColor = theme.secondary
+  }
 }

Sources/iOS/IconButton.swift

@@ -35,4 +35,11 @@ open class IconButton: Button {
     super.prepare()
     pulseAnimation = .center
   }
+  
+  open override func apply(theme: Theme) {
+    super.apply(theme: theme)
+    
+    tintColor = theme.secondary
+    pulseColor = theme.secondary
+  }
 }

Sources/iOS/RaisedButton.swift

@@ -35,6 +35,14 @@ open class RaisedButton: Button {
     super.prepare()
     depthPreset = .depth1
     cornerRadiusPreset = .cornerRadius1
-    backgroundColor = .white
+  }
+  
+  open override func apply(theme: Theme) {
+    super.apply(theme: theme)
+    
+    backgroundColor = theme.secondary
+    titleColor = theme.onSecondary
+    pulseColor = theme.onSecondary
+    tintColor = theme.onSecondary
   }
 }