54 lines
1.9 KiB
Swift
54 lines
1.9 KiB
Swift
internal import CPlaydate
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extension System {
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/// An item added to the system menu. Keep no more than three items at once.
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public final class MenuItem {
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let pointer: OpaquePointer
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var onSelect: (MenuItem) -> Void
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/// Retains C strings passed to the OS for option titles.
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private var retainedOptionTitles: [UnsafeMutablePointer<CChar>] = []
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init?(pointer: OpaquePointer?,
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retainedOptionTitles: [UnsafeMutablePointer<CChar>] = [],
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onSelect: @escaping (MenuItem) -> Void) {
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guard let pointer else {
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for title in retainedOptionTitles { title.deallocate() }
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return nil
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}
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self.pointer = pointer
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self.retainedOptionTitles = retainedOptionTitles
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self.onSelect = onSelect
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}
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/// The menu item's title.
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public var title: String {
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get {
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String(playdateCString: Playdate.systemAPI.pointee.getMenuItemTitle.unsafelyUnwrapped(pointer)) ?? ""
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}
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set {
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newValue.withPlaydateCString {
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Playdate.systemAPI.pointee.setMenuItemTitle.unsafelyUnwrapped(pointer, $0)
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}
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}
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}
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/// For checkmark items this is 0 or 1; for option items it is the
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/// index of the selected option.
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public var value: Int {
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get { Int(Playdate.systemAPI.pointee.getMenuItemValue.unsafelyUnwrapped(pointer)) }
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set { Playdate.systemAPI.pointee.setMenuItemValue.unsafelyUnwrapped(pointer, Int32(newValue)) }
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}
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/// Convenience view of `value` for checkmark items.
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public var isChecked: Bool {
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get { value != 0 }
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set { value = newValue ? 1 : 0 }
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}
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func deallocateRetainedTitles() {
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for title in retainedOptionTitles { title.deallocate() }
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retainedOptionTitles = []
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}
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}
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}
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