95 lines
3.3 KiB
Swift
95 lines
3.3 KiB
Swift
//
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// WiredTransferSettingChipButton.swift
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// suixinkan
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//
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import SnapKit
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import UIKit
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/// 有线传输页设置 chip 按钮，通过子视图展示标题与可选下拉箭头，不依赖 `UIButton` 原生 title 样式。
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final class WiredTransferSettingChipButton: UIButton {
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private let titleLabelView = UILabel()
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private let chevronView = UIImageView()
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private var titleTrailingToSuperviewConstraint: Constraint?
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private var titleTrailingToChevronConstraint: Constraint?
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/// 是否展示右侧下拉箭头。
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var showsChevron: Bool {
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didSet { updateChevronLayout() }
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}
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/// 当前展示的标题文案。
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private(set) var titleText: String = ""
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/// 当前值的展示颜色，供状态测试确认不可交互时仍保持清晰。
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var displayedTitleColor: UIColor? {
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titleLabelView.textColor
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}
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/// 创建设置 chip 按钮。
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/// - Parameter showsChevron: 是否展示下拉箭头，默认不展示。
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init(showsChevron: Bool = false) {
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self.showsChevron = showsChevron
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super.init(frame: .zero)
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setupUI()
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updateChevronLayout()
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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/// 更新 chip 标题文案。
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func apply(title: String) {
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titleText = title
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titleLabelView.text = title
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accessibilityLabel = title
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}
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private func setupUI() {
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backgroundColor = AppColor.pageBackground
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layer.cornerRadius = 8
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layer.borderWidth = 1
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layer.borderColor = AppColor.border.cgColor
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titleLabelView.font = .systemFont(ofSize: 11)
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// 当前设置值即使不可点击也代表已经生效，使用主文字色避免呈现为禁用状态。
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titleLabelView.textColor = AppColor.textPrimary
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titleLabelView.lineBreakMode = .byTruncatingTail
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titleLabelView.isUserInteractionEnabled = false
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chevronView.image = UIImage(systemName: "chevron.down")?
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.withConfiguration(UIImage.SymbolConfiguration(pointSize: 13, weight: .semibold))
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chevronView.tintColor = AppColor.textSecondary
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chevronView.contentMode = .scaleAspectFit
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chevronView.isUserInteractionEnabled = false
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addSubview(titleLabelView)
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addSubview(chevronView)
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titleLabelView.snp.makeConstraints { make in
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make.leading.equalToSuperview().offset(10)
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make.centerY.equalToSuperview()
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titleTrailingToSuperviewConstraint = make.trailing.lessThanOrEqualToSuperview().offset(-10).constraint
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titleTrailingToChevronConstraint = make.trailing.lessThanOrEqualTo(chevronView.snp.leading).offset(-4).constraint
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}
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chevronView.snp.makeConstraints { make in
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make.trailing.equalToSuperview().offset(-10)
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make.centerY.equalToSuperview()
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make.size.equalTo(16)
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}
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}
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private func updateChevronLayout() {
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chevronView.isHidden = !showsChevron
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if showsChevron {
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titleTrailingToSuperviewConstraint?.deactivate()
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titleTrailingToChevronConstraint?.activate()
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} else {
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titleTrailingToChevronConstraint?.deactivate()
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titleTrailingToSuperviewConstraint?.activate()
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}
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}
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}
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