added focused state

Signed-off-by: Matt Bruce <matt.bruce@verizon.com>

VDS/Components/DropdownSelect/DropdownSelect.swift

@@ -31,6 +31,18 @@ open class DropdownSelect: EntryFieldBase {
     //--------------------------------------------------
     // MARK: - Public Properties
     //--------------------------------------------------
+    /// Override UIControl state to add the .error state if showSuccess is true and if showError is true.
+    open override var state: UIControl.State {
+        get {
+            var state = super.state
+            if dropdownField.isFirstResponder {
+                state.insert(.focused)
+            }
+            
+            return state
+        }
+    }
+    
     /// If true, the label will be displayed inside the dropdown containerView. Otherwise, the label will be above the dropdown containerView like a normal text input.
     open var showInlineLabel: Bool = false { didSet { setNeedsUpdate() }}
 
@@ -339,6 +351,14 @@ open class DropdownSelect: EntryFieldBase {
         titleLabelWidthConstraint?.isActive = helperTextPlacement == .right
     }
     
+    open override var canBecomeFirstResponder: Bool { true }
+
+    open override func resignFirstResponder() -> Bool {
+        if dropdownField.isFirstResponder {
+            dropdownField.resignFirstResponder()
+        }
+        return super.resignFirstResponder()
+    }
 }
 
 //--------------------------------------------------
@@ -354,6 +374,7 @@ extension DropdownSelect: UIPickerViewDelegate, UIPickerViewDataSource {
             dropdownField.resignFirstResponder()
         }
         optionsPicker.isHidden = !optionsPicker.isHidden
+        setNeedsUpdate()
     }
     
     public func numberOfComponents(in pickerView: UIPickerView) -> Int {