[WIP] Video chats

submodules/TelegramCallsUI/Sources/VideoChatPinStatusComponent.swift

@@ -0,0 +1,99 @@
+import Foundation
+import UIKit
+import Display
+import ComponentFlow
+import TelegramPresentationData
+import ComponentDisplayAdapters
+
+final class VideoChatPinStatusComponent: Component {
+    let theme: PresentationTheme
+    let strings: PresentationStrings
+    let isPinned: Bool
+    let action: () -> Void
+
+    init(
+        theme: PresentationTheme,
+        strings: PresentationStrings,
+        isPinned: Bool,
+        action: @escaping () -> Void
+    ) {
+        self.theme = theme
+        self.strings = strings
+        self.isPinned = isPinned
+        self.action = action
+    }
+
+    static func ==(lhs: VideoChatPinStatusComponent, rhs: VideoChatPinStatusComponent) -> Bool {
+        if lhs.theme !== rhs.theme {
+            return false
+        }
+        if lhs.strings !== rhs.strings {
+            return false
+        }
+        if lhs.isPinned != rhs.isPinned {
+            return false
+        }
+        return true
+    }
+
+    final class View: UIView {
+        private var pinNode: VoiceChatPinButtonNode?
+
+        private var component: VideoChatPinStatusComponent?
+        private var isUpdating: Bool = false
+        
+        override init(frame: CGRect) {
+            super.init(frame: frame)
+        }
+        
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
+        
+        deinit {
+        }
+        
+        @objc private func pinPressed() {
+            guard let component = self.component else {
+                return
+            }
+            component.action()
+        }
+        
+        func update(component: VideoChatPinStatusComponent, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+            self.isUpdating = true
+            defer {
+                self.isUpdating = false
+            }
+            
+            self.component = component
+            
+            let pinNode: VoiceChatPinButtonNode
+            if let current = self.pinNode {
+                pinNode = current
+            } else {
+                pinNode = VoiceChatPinButtonNode(theme: component.theme, strings: component.strings)
+                self.pinNode = pinNode
+                self.addSubview(pinNode.view)
+                pinNode.addTarget(self, action: #selector(self.pinPressed), forControlEvents: .touchUpInside)
+            }
+            let pinNodeSize = pinNode.update(size: availableSize, transition: transition.containedViewLayoutTransition)
+            let pinNodeFrame = CGRect(origin: CGPoint(), size: pinNodeSize)
+            transition.setFrame(view: pinNode.view, frame: pinNodeFrame)
+            
+            pinNode.update(pinned: component.isPinned, animated: !transition.animation.isImmediate)
+            
+            let size = pinNodeSize
+            
+            return size
+        }
+    }
+
+    func makeView() -> View {
+        return View()
+    }
+
+    func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<Empty>, transition: ComponentTransition) -> CGSize {
+        return view.update(component: self, availableSize: availableSize, state: state, environment: environment, transition: transition)
+    }
+}