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