import UIKit

/// 自定义 UITextView，替换系统默认的 UIMenuItem 为自定义操作（拷贝、高亮、批注）
final class RDEPUBSelectableTextView: UITextView {
    /// 选择菜单操作回调
    var onSelectionAction: ((RDEPUBAnnotationMenuAction) -> Void)?

    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        switch action {
        case #selector(rd_copy(_:)),
             #selector(rd_highlight(_:)),
             #selector(rd_annotate(_:)):
            return selectedRange.location != NSNotFound && selectedRange.length > 0
        default:
            return false
        }
    }

    @objc func rd_copy(_ sender: Any?) {
        onSelectionAction?(.copy)
    }

    @objc func rd_highlight(_ sender: Any?) {
        onSelectionAction?(.highlight)
    }

    @objc func rd_annotate(_ sender: Any?) {
        onSelectionAction?(.annotate)
    }
}