Refactor PasswordSetupUI, PassportUI, GalleryUI and related modules

submodules/PassportUI/Sources/Form/FormControllerHeaderItem.swift

@@ -0,0 +1,70 @@
+import Foundation
+import UIKit
+import AsyncDisplayKit
+import Display
+import TelegramPresentationData
+
+private let titleFont = Font.regular(14.0)
+
+final class FormControllerHeaderItem: FormControllerItem {
+    let text: String
+    
+    init(text: String) {
+        self.text = text
+    }
+    
+    func node() -> ASDisplayNode & FormControllerItemNode {
+        return FormControllerHeaderItemNode()
+    }
+    
+    func update(node: ASDisplayNode & FormControllerItemNode, theme: PresentationTheme, strings: PresentationStrings, dateTimeFormat: PresentationDateTimeFormat, width: CGFloat, previousNeighbor: FormControllerItemNeighbor, nextNeighbor: FormControllerItemNeighbor, transition: ContainedViewLayoutTransition) -> (FormControllerItemPreLayout, (FormControllerItemLayoutParams) -> CGFloat) {
+        return (FormControllerItemPreLayout(aligningInset: 0.0), { _ in
+            guard let node = node as? FormControllerHeaderItemNode else {
+                assertionFailure()
+                return 0.0
+            }
+            return node.update(item: self, previousNeighbor: previousNeighbor, width: width, theme: theme, transition: transition)
+        })
+    }
+}
+
+final class FormControllerHeaderItemNode: ASDisplayNode, FormControllerItemNode {
+    private let textNode: ImmediateTextNode
+    
+    override init() {
+        self.textNode = ImmediateTextNode()
+        self.textNode.maximumNumberOfLines = 1
+        
+        super.init()
+        
+        self.addSubnode(self.textNode)
+    }
+    
+    func update(item: FormControllerHeaderItem, previousNeighbor: FormControllerItemNeighbor, width: CGFloat, theme: PresentationTheme, transition: ContainedViewLayoutTransition) -> CGFloat {
+        self.textNode.attributedText = NSAttributedString(string: item.text, font: titleFont, textColor: theme.list.sectionHeaderTextColor)
+        let leftInset: CGFloat = 16.0
+        
+        let textSize = self.textNode.updateLayout(CGSize(width: width - leftInset - 10.0, height: CGFloat.greatestFiniteMagnitude))
+        
+        let height: CGFloat
+        switch previousNeighbor {
+            case .none:
+                height = 20.0 + 30.0
+            case .spacer:
+                height = 14.0
+            case .item:
+                height = 14.0
+        }
+        
+        transition.updateFrame(node: self.textNode, frame: CGRect(origin: CGPoint(x: leftInset, y: height - 23.0), size: textSize))
+        
+        return height
+    }
+    
+    var preventsTouchesToOtherItems: Bool {
+        return false
+    }
+    
+    func touchesToOtherItemsPrevented() {
+    }
+}