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111 lines
3.8 KiB
Swift
111 lines
3.8 KiB
Swift
import Foundation
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import UIKit
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import AsyncDisplayKit
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import Markdown
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public class ActionSheetTextItem: ActionSheetItem {
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public enum Font {
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case `default`
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case large
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}
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public let title: String
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public let font: Font
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public let parseMarkdown: Bool
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public init(title: String, font: Font = .default, parseMarkdown: Bool = true) {
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self.title = title
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self.font = font
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self.parseMarkdown = parseMarkdown
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}
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public func node(theme: ActionSheetControllerTheme) -> ActionSheetItemNode {
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let node = ActionSheetTextNode(theme: theme)
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node.setItem(self)
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return node
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}
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public func updateNode(_ node: ActionSheetItemNode) {
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guard let node = node as? ActionSheetTextNode else {
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assertionFailure()
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return
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}
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node.setItem(self)
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node.requestLayoutUpdate()
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}
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}
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public class ActionSheetTextNode: ActionSheetItemNode {
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private let theme: ActionSheetControllerTheme
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private var item: ActionSheetTextItem?
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private let label: ImmediateTextNode
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private let accessibilityArea: AccessibilityAreaNode
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override public init(theme: ActionSheetControllerTheme) {
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self.theme = theme
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self.label = ImmediateTextNode()
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self.label.isUserInteractionEnabled = false
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self.label.maximumNumberOfLines = 0
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self.label.displaysAsynchronously = false
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self.label.truncationType = .end
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self.label.isAccessibilityElement = false
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self.label.textAlignment = .center
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self.accessibilityArea = AccessibilityAreaNode()
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self.accessibilityArea.accessibilityTraits = .staticText
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super.init(theme: theme)
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self.label.isUserInteractionEnabled = false
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self.addSubnode(self.label)
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self.addSubnode(self.accessibilityArea)
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}
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func setItem(_ item: ActionSheetTextItem) {
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self.item = item
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let fontSize: CGFloat
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switch item.font {
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case .default:
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fontSize = 13.0
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case .large:
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fontSize = 15.0
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}
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let defaultFont = Font.regular(floor(self.theme.baseFontSize * fontSize / 17.0))
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let boldFont = Font.semibold(floor(self.theme.baseFontSize * fontSize / 17.0))
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if item.parseMarkdown {
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let body = MarkdownAttributeSet(font: defaultFont, textColor: self.theme.secondaryTextColor)
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let bold = MarkdownAttributeSet(font: boldFont, textColor: self.theme.secondaryTextColor)
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let link = body
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self.label.attributedText = parseMarkdownIntoAttributedString(item.title, attributes: MarkdownAttributes(body: body, bold: bold, link: link, linkAttribute: { _ in
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return nil
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}))
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} else {
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self.label.attributedText = NSAttributedString(string: item.title, font: defaultFont, textColor: self.theme.secondaryTextColor, paragraphAlignment: .center)
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}
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self.accessibilityArea.accessibilityLabel = item.title
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}
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public override func updateLayout(constrainedSize: CGSize, transition: ContainedViewLayoutTransition) -> CGSize {
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let labelSize = self.label.updateLayout(CGSize(width: max(1.0, constrainedSize.width - 20.0), height: constrainedSize.height))
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let size = CGSize(width: constrainedSize.width, height: max(57.0, labelSize.height + 32.0))
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self.label.frame = CGRect(origin: CGPoint(x: floorToScreenPixels((size.width - labelSize.width) / 2.0), y: floorToScreenPixels((size.height - labelSize.height) / 2.0)), size: labelSize)
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self.accessibilityArea.frame = CGRect(origin: CGPoint(), size: size)
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self.updateInternalLayout(size, constrainedSize: constrainedSize)
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return size
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}
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}
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