Main menu in SwiftUI App

Question

Maybe I missed something — is it possible to somehow edit / change / customise main menu in SwiftUI App lifecycle? I made a document based App, I can read, write, even Recent Documents have for free. But how to add or remove Items, and connect them with app in pure SwiftUI way? With no AppKit, pure?

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Posted by

ludzik

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Answer 1

Use the .commands modifier, such as:

Code Block 	@main
	struct MyApp: App {
	var body: some Scene {
		WindowGroup {
				ContentView()
		}.commands {
				CommandGroup(replacing: .help) {
						Button(action: {....}) {
								Text("MyApp Help")
						}
				}
				CommandMenu("Edit") {
					...
				}
		}
}
}

Posted by

workingdogintokyo

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Answer 2

Thanks, it look promising. But if I use this code (filled dots with {print ("hello")} and Text("..."), app hangs up and prints in console:

Code Block 2020-11-20 11:44:39.064295+0100 GlyphDesigner[45633:2671193] [Layout] Unable to simultaneously satisfy constraints:
    "<NSAutoresizingMaskLayoutConstraint:0x60000119abc0 h=-&- v=-&- _NSTextContentView:0x7fee4561c870.minX == 0   (active, names: '|':NSTextView:0x7fee45673c80 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x60000119ada0 h=-&- v=-&- H:[_NSTextContentView:0x7fee4561c870]-(380)-|   (active, names: '|':NSTextView:0x7fee45673c80 )>",
    "<NSAutoresizingMaskLayoutConstraint:0x60000119ae90 h=--& v=--& NSTextView:0x7fee45673c80.width == 318   (active)>"
)
Will attempt to recover by breaking constraint 
<NSAutoresizingMaskLayoutConstraint:0x60000119ada0 h=-&- v=-&- H:[_NSTextContentView:0x7fee4561c870]-(380)-|   (active, names: '|':NSTextView:0x7fee45673c80 )>
Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens.  And/or, set a symbolic breakpoint on LAYOUT_CONSTRAINTS_NOT_SATISFIABLE to catch this in the debugger.

But I have no idea where to set constrains in this case.

Posted by

ludzik

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Answer 3

I cannot replicate your error, all is working fine for me on:
macos 11, using xcode 12. What system are you using?

Code Block  @main
 struct MyApp: App {
 var body: some Scene {
		WindowGroup {
				ContentView()
		}.commands {
				CommandGroup(replacing: .help) {
						Button(action: {print("clicked on MyApp Help menu")}) {
								Text("MyApp Help")
						}
				}
				CommandMenu("Edit") {
						Text("edit menu item")
				}
		}
	}
}
	struct ContentView: View {
	var body: some View {
		Text("test").padding()
}
}

Posted by

workingdogintokyo

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Main menu in SwiftUI App

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