Dynamic initial value for ACSlider

ACSlider/Classes/ACSlider.swift

@@ -9,22 +9,26 @@
 import UIKit
 
 
+protocol TitleValueProvider {
+    var title: String? { get set }
+    var value: CGFloat { get set }
+}
+
 @IBDesignable
-public final class ACSlider: UIControl {
+public final class ACSlider: UIControl, TitleValueProvider {
 
-    @IBInspectable var title: String? {
+    @IBInspectable public var title: String? {
         get { return thumbView.title }
         set { thumbView.title = newValue }
     }
+    @IBInspectable public var value: CGFloat {
+        get { return thumbView.value }
+        set { thumbView.value = newValue }
+    }
     @IBInspectable public var maxValue: CGFloat = 23
-
 
     // MARK: -
 
-    private(set) public var value: CGFloat = 0 {
-        didSet { thumbView.value = String(format: "%02.0f", value) }
-    }
-
     private var thumbSize: CGSize {
         return thumbView.intrinsicContentSize
     }
@@ -73,11 +77,6 @@ public final class ACSlider: UIControl {
         addSubview(thumbView)
     }
 
-    override public func prepareForInterfaceBuilder() {
-        super.prepareForInterfaceBuilder()
-        value = CGFloat(Int.random(in: 0..<Int(maxValue)))
-    }
-
     override public func tintColorDidChange() {
         super.tintColorDidChange()
         tintColorUpdate()

ACSlider/Classes/ThumbView.swift

@@ -10,35 +10,38 @@ import UIKit
 
 
 @IBDesignable
-final class ThumbView: UIView {
+final class ThumbView: UIView, TitleValueProvider {
 
     var title: String? {
         get { return titleLabel.text }
         set { titleLabel.text = newValue }
     }
 
-    var value: String? {
-        get { return valueLabel.text }
-        set { valueLabel.text = newValue }
+    private static let valueFormat = "%02.0f"
+
+    private var rawValue: CGFloat = 0
+
+    var value: CGFloat {
+        get { return rawValue }
+        set {
+            rawValue = newValue
+            valueLabel.text = String(format: ThumbView.valueFormat, newValue)
+        }
     }
 
 
     // MARK: -
 
-    private let valueLabel: UILabel = {
-        let label = UILabel(frame: .zero)
-        label.textAlignment = .center
-        label.text = "00"
-
-        return label
-    }()
+    private let valueLabel = ThumbView.createLabel()
+
+    private let titleLabel = ThumbView.createLabel()
 
-    private let titleLabel: UILabel = {
+    private static func createLabel() -> UILabel {
         let label = UILabel(frame: .zero)
         label.textAlignment = .center
 
         return label
-    }()
+    }
 
     private let thumbView: UIView = {
         return CircleView(frame: .zero)
@@ -70,6 +73,8 @@ final class ThumbView: UIView {
         addSubview(valueLabel)
         addSubview(thumbView)
 
+        value = 0
+
         configureLayout()
         configureTintColor()
 

Example/ACSlider/Base.lproj/Main.storyboard

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="vXZ-lx-hvc">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="vXZ-lx-hvc">
     <device id="retina4_0" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14490.49"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -29,6 +29,9 @@
                                         <real key="value" value="23"/>
                                     </userDefinedRuntimeAttribute>
                                     <userDefinedRuntimeAttribute type="string" keyPath="title" value="hours"/>
+                                    <userDefinedRuntimeAttribute type="number" keyPath="value">
+                                        <real key="value" value="5"/>
+                                    </userDefinedRuntimeAttribute>
                                 </userDefinedRuntimeAttributes>
                             </view>
                             <segmentedControl opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="top" segmentControlStyle="plain" selectedSegmentIndex="0" translatesAutoresizingMaskIntoConstraints="NO" id="B5b-VE-y0w">

Example/Podfile

@@ -1,5 +1,5 @@
 use_frameworks!
-
+platform :ios, '10.0'
 
 target 'ACSlider_Example' do
 

Example/Podfile.lock

@@ -9,8 +9,8 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  ACSlider: dfc421d970c21c2546f1cfb3b2d6fa241bca1c43
+  ACSlider: 073fa27f6e8de51f0e971235ddc65f0dcc3e5cb4
 
-PODFILE CHECKSUM: 9369b59a92972a0bcc86321dd5a8a2e36da80f40
+PODFILE CHECKSUM: 0f45066dcfce2e95e72674ebcbff779073e085c0
 
-COCOAPODS: 1.6.0
+COCOAPODS: 1.7.1