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CLK/OSBindings/Mac/Clock Signal/AppDelegate.swift

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//
// AppDelegate.swift
// Clock Signal
//
// Created by Thomas Harte on 16/07/2015.
// Copyright 2015 Thomas Harte. All rights reserved.
//
import Cocoa
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
func applicationDidFinishLaunching(_ notification: Notification) {
// Check for at least one Metal-capable GPU; this check
// will become unnecessary if/when the minimum OS version
// that this project supports reascends to 10.14.
if (MTLCopyAllDevices().count == 0) {
let alert = NSAlert()
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alert.messageText = "This application requires a Metal-capable GPU."
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alert.addButton(withTitle: "Quit")
alert.runModal()
let application = notification.object as! NSApplication
application.terminate(self)
}
}
private var hasShownOpenDocument = false
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func applicationShouldOpenUntitledFile(_ sender: NSApplication) -> Bool {
// Decline to show the 'New...' selector by default; the 'Open...'
// dialogue has already been shown if this application was started
// without a file.
//
// Obiter: I dislike it when other applications do this for me, but it
// seems to be the new norm, and I've had user feedback that showing
// nothing is confusing. So here it is.
if !hasShownOpenDocument {
NSDocumentController.shared.openDocument(self)
hasShownOpenDocument = true
}
return false
}
}