Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/ProgressNavigationButtonNode/Sources/ProgressNavigationButtonNode.h

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+//
+//  ProgressNavigationButtonNode.h
+//  ProgressNavigationButtonNode
+//
+//  Created by Peter on 8/1/19.
+//  Copyright © 2019 Telegram Messenger LLP. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+//! Project version number for ProgressNavigationButtonNode.
+FOUNDATION_EXPORT double ProgressNavigationButtonNodeVersionNumber;
+
+//! Project version string for ProgressNavigationButtonNode.
+FOUNDATION_EXPORT const unsigned char ProgressNavigationButtonNodeVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <ProgressNavigationButtonNode/PublicHeader.h>
+
+

submodules/ProgressNavigationButtonNode/Sources/ProgressNavigationButtonNode.swift

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+import Foundation
+import UIKit
+import AsyncDisplayKit
+import Display
+import ActivityIndicator
+
+public final class ProgressNavigationButtonNode: ASDisplayNode {
+    private var indicatorNode: ActivityIndicator
+    
+    public init(color: UIColor) {
+        self.indicatorNode = ActivityIndicator(type: .custom(color, 22.0, 1.0, false))
+        
+        super.init()
+        
+        self.addSubnode(self.indicatorNode)
+    }
+    
+    override public func calculateSizeThatFits(_ constrainedSize: CGSize) -> CGSize {
+        return CGSize(width: 26.0, height: 22.0)
+    }
+    
+    override public func layout() {
+        super.layout()
+        
+        let size = self.bounds.size
+        
+        let indicatorSize = CGSize(width: 22.0, height: 22.0)
+        self.indicatorNode.frame = CGRect(origin: CGPoint(x: floor((size.width - indicatorSize.width) / 2.0), y: floor((size.height - indicatorSize.height) / 2.0)), size: indicatorSize)
+    }
+}