Merge pull request #240 from TouchInstinct/feature/refresh_control

Rrefresh control

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+### 0.10.2
+- **Add**: `RefreshControl` - a basic UIRefreshControl with fixed refresh action.
+
 ### 0.10.1
 - **Update**: Third party dependencies:  `Alamofire` 5.2.2, `RxAlamofire` 5.6.1
 
@@ -18,7 +21,6 @@
 #### TIFoundationUtils
 - **Add**: `CodableKeyValueStorage` - storage that can get and set codable objects by the key.
 
-
 ### 0.9.43
 - **Fix**: `OTPSwiftView`'s dependencies.
 

LeadKit.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name            = "LeadKit"
-  s.version         = "0.10.1"
+  s.version         = "0.10.2"
   s.summary         = "iOS framework with a bunch of tools for rapid development"
   s.homepage        = "https://github.com/TouchInstinct/LeadKit"
   s.license         = "Apache License, Version 2.0"

TIUIElements/README.md

@@ -1,6 +1,8 @@
 # TIUIElements
 
-Bunch of useful protocols and views.
+Bunch of useful protocols and views:
+
+- `RefreshControl` - a basic UIRefreshControl with fixed refresh action.
 
 # Installation via SPM
 

TIUIElements/Sources/Views/RefreshControl/RefreshControl.swift

@@ -0,0 +1,52 @@
+import UIKit
+
+open class RefreshControl: UIRefreshControl {
+    private var action: Selector?
+    private var target: NSObjectProtocol?
+
+    // Handle .valueChanged event of refresh control
+    public override func addTarget(_ target: Any?, action: Selector, for controlEvents: UIControl.Event) {
+        guard case .valueChanged = controlEvents else {
+            return super.addTarget(target, action: action, for: controlEvents)
+        }
+
+        self.action = action
+        self.target = target as? NSObjectProtocol
+    }
+
+    public override func removeTarget(_ target: Any?, action: Selector?, for controlEvents: UIControl.Event) {
+        guard self.action == action, self.target?.isEqual(target) ?? false else {
+            super.removeTarget(target, action: action, for: controlEvents)
+            return
+        }
+        
+        self.action = nil
+        self.target = nil
+    }
+    
+    public override func sendActions(for controlEvents: UIControl.Event) {
+        guard case .valueChanged = controlEvents else {
+            return super.sendActions(for: controlEvents)
+        }
+
+        // Perform target's action
+        if action != nil, target != nil {
+            performRefreshAction()
+        }
+    }
+    
+    open override func endRefreshing() {
+        // Due to Apple's recommends
+        CFRunLoopPerformBlock(CFRunLoopGetMain(), CFRunLoopMode.defaultMode.rawValue) {
+            super.endRefreshing()
+        }
+    }    
+    
+    private func performRefreshAction() {
+        // It is implemented the combined behavior of `touchUpInside` and `touchUpOutside` using `CFRunLoopPerformBlock`,
+        // which `UIRefreshControl` does not support
+        CFRunLoopPerformBlock(CFRunLoopGetMain(), CFRunLoopMode.defaultMode.rawValue) {
+            self.target?.perform(self.action)
+        }
+    }
+}