Photo Editor/PhotoSplitViewController.swift
/* |
Copyright (C) 2016 Apple Inc. All Rights Reserved. |
See LICENSE.txt for this sample’s licensing information |
Abstract: |
PhotoSplitViewController allows us to easily access the child controllers as specific types. |
*/ |
import Cocoa |
class PhotoSplitViewController: NSSplitViewController { |
// This method is less generic than our protocol-based approach, but sometimes necessary. |
// Here we assume that at least one child must conform to the desired type; the use of an implicitly-unwrapped optional results in a runtime error if this isn't true. |
var sidebarController: SidebarViewController! { |
return childViewControllers.lazy.filter { $0 is SidebarViewController }.first as? SidebarViewController |
} |
var canvasController: CanvasViewController! { |
return childViewControllers.lazy.filter { $0 is CanvasViewController }.first as? CanvasViewController |
} |
} |
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