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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // | ||
| // ApplicationWindowState.swift | ||
| // WindowTreatment | ||
| // | ||
| // Created by Matt Massicotte on 2019-11-08. | ||
| // Copyright © 2019 Chime Systems Inc. All rights reserved. | ||
| // | ||
|
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| import Foundation | ||
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| public class ApplicationWindowState { | ||
| private var windows: Set<NSWindow> | ||
| private var lastMainWindow: NSWindow? | ||
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| public var changeHandler: (() -> Void)? | ||
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| public init() { | ||
| self.windows = Set() | ||
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| NotificationCenter.default.addObserver(self, selector: #selector(windowsChangedNotification(_:)), name: NSWindow.willCloseNotification, object: nil) | ||
| NotificationCenter.default.addObserver(self, selector: #selector(windowsChangedNotification(_:)), name: NSWindow.didBecomeMainNotification, object: nil) | ||
| } | ||
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| deinit { | ||
| NotificationCenter.default.removeObserver(self) | ||
| } | ||
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| @objc private func windowsChangedNotification(_ notification: NSNotification) { | ||
| let current = Set(currentWindows) | ||
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| if windows == current && mainWindow == lastMainWindow { | ||
| return | ||
| } | ||
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| windows = Set(current) | ||
| lastMainWindow = mainWindow | ||
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| changeHandler?() | ||
| } | ||
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| public var windowsMenu: NSMenu? { | ||
| NSApp.windowsMenu | ||
| } | ||
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| public var currentWindows: [NSWindow] { | ||
| return NSApp.windows | ||
| } | ||
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| public var mainWindow: NSWindow? { | ||
| return NSApp.mainWindow | ||
| } | ||
| } |