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TUIKit/TUICallKit/TUICallKit-Swift/View/Component/TimerView.swift

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+//
+//  TimerView.swift
+//  TUICallKit
+//
+//  Created by vincepzhang on 2023/2/15.
+//
+
+import Foundation
+import TUICallEngine
+
+class TimerView: UIView {
+    
+    let timeCountObserver = Observer()
+    
+    lazy var timerLabel: UILabel = {
+        let timerLabel = UILabel(frame: CGRect.zero)
+        timerLabel.font = UIFont.boldSystemFont(ofSize: 15.0)
+        timerLabel.backgroundColor = UIColor.clear
+        timerLabel.textAlignment = .center
+        timerLabel.textColor = UIColor.t_colorWithHexString(color: "#D5E0F2")
+        timerLabel.text = GCDTimer.secondToHMSString(second: TUICallState.instance.timeCount.value)
+        return timerLabel
+    }()
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        registerObserveState()
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    deinit {
+        TUICallState.instance.timeCount.removeObserver(timeCountObserver)
+    }
+    
+    // MARK: UI Specification Processing
+    
+    private var isViewReady: Bool = false
+    override func didMoveToWindow() {
+        super.didMoveToWindow()
+        if isViewReady { return }
+        constructViewHierarchy()
+        activateConstraints()
+        isViewReady = true
+    }
+    
+    func constructViewHierarchy() {
+        addSubview(timerLabel)
+    }
+    
+    func activateConstraints() {
+        timerLabel.snp.makeConstraints { make in
+            make.edges.equalTo(self)
+        }
+    }
+    
+    // MARK: Register TUICallState Observer && Update UI
+    
+    func registerObserveState() {
+        callTimeChange()
+    }
+    
+    func callTimeChange() {
+        TUICallState.instance.timeCount.addObserver(timeCountObserver, closure: { [weak self] newValue, _ in
+            guard let self = self else { return }
+            DispatchCallKitMainAsyncSafe {
+                self.timerLabel.text = GCDTimer.secondToHMSString(second: newValue)
+            }
+        })
+    }
+    
+}