Unlike iOS, where views need to be transitioned on and off screen, due to limited physical display space.

In macOS, most apps tend to group their views together within the same window using UI elements such as Split Views and Tabs. This differs from macOS, when Segues usually define ' Containment', where one Scene is the child of a parent Scene. If you are familiar with working in Storyboards in iOS, you know that Segues for iOS usually define transitions between full screen views. Segues provide the relationships between all of the Scenes that define your app's UI. The Collection View Controller contains an array of Collection View Items, each of which contain one or more View Controllers that contain their own Views. In Storyboards, View Controllers (such as the Split View Controller and the Tab View Controller) can now implement Containment, such that they can 'contain' other sub View Controllers:Ĭhild View Controllers contain methods and properties to tie them back to their Parent View Controller and to work with displaying and removing Views from the screen.Īll Container View Controllers built into macOS have a specific layout which Apple suggest that you follow if creating your own custom Container View Controllers: This automatic View Controller wire-up only occurs on apps running on macOS Sierra (10.12) and greater. ViewDidLayout - This method is called directly after the subviews of view are laid out on screen.Īdditionally, NSViewControllers are now part of the Window's Responder Chain:Īnd as such they are wired-up to receive and respond to events such as Cut, Copy and Paste menu item selections.ViewWillLayout - This method is called just before the subviews of this view are laid out on screen.UpdateViewConstraints - This method is called when the constraints that define a view auto layout position and size need to be updated.ViewDidDisappear - This method is called directly after the view has been removed from the screen.ViewWillDisappear - This method is called just before the view is removed from the screen.ViewDidAppear - This method is called directly after the view has been displayed on screen.ViewWillAppear - This method is called just before the view is displayed on screen.ViewDidLoad - This method is called when the view is loaded from the Storyboard file.Most importantly are the follow methods use to respond to the lifecycle of the View being controlled by the given View Controller: Several new methods have been added to the NSViewController class to support Storyboards in macOS. Each top level scene in the Storyboard represents one View Controller in the Xamarin.Mac app's code. View Controllers define the relationships between a given View of information within a Mac app and the data model that provides that information.

It's marked by the Storyboard Entry Point and the open ended arrow above. Optionally, you can use the InstantiateInitialController method to load the View Controller that has been assigned the Initial Controller in Interface Builder: You set the Identity in Xcode's Interface Builder when designing the UI: The InstantiateControllerWithIdentifier creates an instance of the View Controller with the given Identity. The FromName loads the Storyboard file with the given name that has been included in the app's bundle. Var controller = storyboard.InstantiateControllerWithIdentifier ('MainWindow') as NSWindowController Var storyboard = NSStoryboard.FromName ('Main', null) You can use the following code to perform this action: // Get new window There might be times when you need to load a specific Storyboard from code and create a View Controller manually. To define the starting Storyboard for your app, edit it's ist file and select the Main Interface from the dropdown box: storyboard) that gets included in the Xamarin.Mac app's bundle when it is compiled and shipped.

The storyboard is a resource file (with the extensions of. In Xcode's Interface Builder, each of these controllers lives in its own Scene. A storyboard defines all of the UI for a given app broken down into a functional overview of its view controllers.

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