实现订单 Tab 并接入扫码核销流程

suixinkan/UI/Orders/OrderListView.swift

@@ -0,0 +1,73 @@
+//
+//  OrderListView.swift
+//  suixinkan
+//
+
+import SnapKit
+import UIKit
+
+/// 订单列表容器，含下拉刷新与分页。
+final class OrderListView: UIView {
+
+    enum Mode {
+        case photographer
+        case store
+    }
+
+    var onRefresh: (() -> Void)?
+    var onLoadMore: ((Int) -> Void)?
+
+    let tableView = UITableView(frame: .zero, style: .plain)
+    private let refreshControl = UIRefreshControl()
+    private let footerLabel = UILabel()
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        backgroundColor = UIColor(hex: 0xF5F5F5)
+        tableView.backgroundColor = .clear
+        tableView.separatorStyle = .none
+        tableView.keyboardDismissMode = .onDrag
+        tableView.refreshControl = refreshControl
+        refreshControl.addTarget(self, action: #selector(refreshTriggered), for: .valueChanged)
+
+        footerLabel.font = .systemFont(ofSize: 12)
+        footerLabel.textColor = UIColor(hex: 0x9CA3AF)
+        footerLabel.textAlignment = .center
+        footerLabel.text = "没有更多"
+
+        addSubview(tableView)
+        tableView.snp.makeConstraints { make in
+            make.edges.equalToSuperview()
+        }
+    }
+
+    @available(*, unavailable)
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    func apply(isRefreshing: Bool, canLoadMore: Bool, isEmpty: Bool) {
+        if isRefreshing {
+            if !refreshControl.isRefreshing { refreshControl.beginRefreshing() }
+        } else {
+            refreshControl.endRefreshing()
+        }
+        footerLabel.text = isEmpty ? "暂无订单" : (canLoadMore ? "" : "没有更多")
+        tableView.tableFooterView = footerLabelFrame(isEmpty: isEmpty, canLoadMore: canLoadMore)
+    }
+
+    private func footerLabelFrame(isEmpty: Bool, canLoadMore: Bool) -> UIView? {
+        guard !canLoadMore || isEmpty else { return nil }
+        footerLabel.frame = CGRect(x: 0, y: 0, width: bounds.width, height: 44)
+        return footerLabel
+    }
+
+    @objc private func refreshTriggered() {
+        onRefresh?()
+    }
+
+    func notifyLoadMoreIfNeeded(at index: Int, shouldLoad: Bool) {
+        guard shouldLoad else { return }
+        onLoadMore?(index)
+    }
+}