39 lines
1.1 KiB
Swift
39 lines
1.1 KiB
Swift
import AppKit
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import Carbon
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import OSLog
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protocol KeyDetectorButtonDelegate: AnyObject {
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func keyWasSet(to keyCode: Int)
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}
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final class KeyDetectorButton: NSButton {
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var defaultKey: Int?
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weak var delegate: KeyDetectorButtonDelegate?
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override var acceptsFirstResponder: Bool { true }
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// This removes default bahavior from NSButton, thus allowing mouse up events.
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override func mouseDown(with event: NSEvent) {}
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override func mouseUp(with event: NSEvent) {
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self.window?.makeFirstResponder(self)
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}
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override func keyDown(with event: NSEvent) {
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if event.keyCode == kVK_Escape || event.keyCode == kVK_Return {
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// Ignore escape and return keys.
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} else if event.keyCode == kVK_Delete {
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if let key = defaultKey, let character = keyName(virtualKeyCode: UInt16(key)) {
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title = character
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}
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} else {
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if let character = keyName(virtualKeyCode: UInt16(event.keyCode)) {
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title = character
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}
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delegate?.keyWasSet(to: Int(event.keyCode))
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}
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self.window?.makeFirstResponder(nil)
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}
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}
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