development: added FABButton to BottomSheet

Sources/iOS/BottomSheetController.swift

@@ -30,10 +30,11 @@
 
 import UIKit
 
-@objc(BottomSheetPosition)
-public enum BottomSheetPosition: Int {
+@objc(BottomSheetFABButtonPosition)
+public enum BottomSheetFABButtonPosition: Int {
     case left
     case right
+    case center
 }
 
 open class BottomSheet: View {
@@ -43,6 +44,23 @@ open class BottomSheet: View {
             layoutSubviews()
         }
     }
+
+    /// A reference to the BottomSheetFABButtonPosition.
+    open var fabButtonPostion = BottomSheetFABButtonPosition.right
+    
+    /// A reference to the fabButtonEdgeInsetsPreset.
+    open var fabButtonEdgeInsetsPreset = EdgeInsetsPreset.none {
+        didSet {
+            fabButtonEdgeInsets = EdgeInsetsPresetToValue(preset: fabButtonEdgeInsetsPreset)
+        }
+    }
+        
+    /// A reference to the fabButtonEdgeInsets.
+    open var fabButtonEdgeInsets = EdgeInsets.zero {
+        didSet {
+            layoutSubviews()
+        }
+    }
     
     open override func layoutSubviews() {
         super.layoutSubviews()
@@ -52,9 +70,26 @@ open class BottomSheet: View {
                 v.removeFromSuperview()
                 addSubview(v)
             }
-            v.center = CGPoint(x: 20, y: 0)
+            
+            var point = center
+            point.y = fabButtonEdgeInsets.top - fabButtonEdgeInsets.bottom
+            
+            switch fabButtonPostion {
+            case .left:
+                point.x = v.bounds.width / 2 + fabButtonEdgeInsets.left
+            case .right:
+                point.x = bounds.width - v.bounds.width / 2 - fabButtonEdgeInsets.right
+            case .center:break
+            }
+            
+            v.center = point
         }
     }
+    
+    open override func prepare() {
+        super.prepare()
+        fabButtonEdgeInsetsPreset = .horizontally5
+    }
 }
 
 extension BottomSheet {

Sources/iOS/EdgeInsets.swift

@@ -66,6 +66,20 @@ public enum EdgeInsetsPreset: Int {
     case tallRectangle7
     case tallRectangle8
     case tallRectangle9
+    
+    /// horizontally
+    case horizontally1
+    case horizontally2
+    case horizontally3
+    case horizontally4
+    case horizontally5
+    
+    /// vertically
+    case vertically1
+    case vertically2
+    case vertically3
+    case vertically4
+    case vertically5
 }
 
 public typealias EdgeInsets = UIEdgeInsets
@@ -135,5 +149,29 @@ public func EdgeInsetsPresetToValue(preset: EdgeInsetsPreset) -> EdgeInsets {
         return EdgeInsets(top: 56, left: 28, bottom: 56, right: 28)
     case .tallRectangle9:
         return EdgeInsets(top: 64, left: 32, bottom: 64, right: 32)
+        
+    /// horizontally
+    case .horizontally1:
+        return EdgeInsets(top: 0, left: 2, bottom: 0, right: 2)
+    case .horizontally2:
+        return EdgeInsets(top: 0, left: 4, bottom: 0, right: 4)
+    case .horizontally3:
+        return EdgeInsets(top: 0, left: 8, bottom: 0, right: 8)
+    case .horizontally4:
+        return EdgeInsets(top: 0, left: 16, bottom: 0, right: 16)
+    case .horizontally5:
+        return EdgeInsets(top: 0, left: 24, bottom: 0, right: 24)
+        
+    /// vertically
+    case .vertically1:
+        return EdgeInsets(top: 2, left: 0, bottom: 2, right: 0)
+    case .vertically2:
+        return EdgeInsets(top: 4, left: 0, bottom: 4, right: 0)
+    case .vertically3:
+        return EdgeInsets(top: 8, left: 0, bottom: 8, right: 0)
+    case .vertically4:
+        return EdgeInsets(top: 16, left: 0, bottom: 16, right: 0)
+    case .vertically5:
+        return EdgeInsets(top: 24, left: 0, bottom: 24, right: 0)
     }
 }