Create popup menu from right click event

Programming Languages Swift
BigEagle OP
Created Aug ’20
Replies 12
Boosts 0
Views 4.5k
Participants 2
I would like to create a popup menu using swift coding in a macOS app from a right click event using Xcode 11 or 12. Can't seem to find an example of this. I see plenty of IOS examples but none for macOS. Does anyone have an example of this you could share or could show me how this is done.

Also, I know how to add a menu to to the View Controller but this allows right click from anywhere in the tableView and I want the popup menu to show when you right click on a row in the table. If anybody is familiar with quicken for Mac I want the same function as it as when you right click on a row in an account register.

Here is the code for the right click event:

Code Block 
  // right click action
    override func rightMouseDown(with theEvent: NSEvent) {
     let point = tableView.convert(theEvent.locationInWindow, from: nil)
        let row = tableView.row(at: point)
        selectedCustomer = custviewModel.customers[row].custNumber!
        print(selectedCustomer)
        // Add popup menu
        print("right click")
        print(row)
    }

I have ask this question on couple of other forums as well as searched for tutorials on this and have come up empty.
Replies  12
Boosts  0
Views  4.5k
Participants  2
Claude31 OP
Aug ’20
Accepted Answer
I extract from an app, hope that will provide a good enough answer.
In this case, I create a popup menu, with values from absMin to absMax. or no value (any). Some values may be disabled. I did not edit in detail, so some parts are probably less useful for you.

Hope that helps anyway.

In rightMouseDown:

Code Block 
        // Add popup menu
         let theMenu = popupMenuForValue(defaultVal: defaultValue, absMin: 1, absMax: 10)  
        NSMenu.popUpContextMenu(theMenu, with: theEvent, for: self) // returns a selected value


The popup creation

Code Block 
    @objc func setMaxi(_ sender: NSMenuItem) {  
        selectedMaxFromMenu = sender.tag
    }
   func popupMenuForValue(defaultVal: Int, absMin: Int, absMax: Int) -> NSMenu { 
            
            let theMenu = NSMenu(title: "Maxi") 	// Not used in fact
            theMenu.autoenablesItems = false  // allows to deactivate some items
            let v0 = NSAttributedString(string: NSLocalizedString("Any", comment: "popupMenuForValue"), attributes: [NSAttributedStringKey.foregroundColor:NSColor.red]) 
            let item0 = NSMenuItem(title: "v0", action: #selector(setMaxi(_:)), keyEquivalent: "") 
            item0.attributedTitle = v0
            item0.tag = 0
            theMenu.addItem(item0)
            let itemSeparator = NSMenuItem.separator()
            theMenu.addItem(itemSeparator)
            
            if absMax == 0 { return theMenu }  
            for i in 1...absMax {
                let basicString = String(i)
                var itemString : NSAttributedString
                if i == defaultVal {
                    itemString = NSAttributedString(string: basicString, attributes: 	 [NSAttributedStringKey.underlineStyle:NSUnderlineStyle.styleSingle.rawValue, NSAttributedStringKey.font: NSFont.boldSystemFont(ofSize: 12)])
                } else {
                    itemString = NSAttributedString(string: basicString, attributes: nil)
                }
                let item = NSMenuItem(title: String(i), action: #selector(setMaxi(_:)), keyEquivalent: "")
                item.attributedTitle = itemString
                item.tag = i
                if i < absMin {
                    item.isEnabled = false
                }
                theMenu.addItem(item)
            }
            
            return theMenu
        }


0
BigEagle OP
Aug ’20
Thanks Claude.


0
Claude31 OP
Aug ’20
Did you make it work ?
0
BigEagle OP
Aug ’20
Claude,

Thanks for checking.. working on it. I got a couple of errors I trying to resolve with your code. I wanted to get that working first. However, I have not been able to work on it much yesterday and today...I live in Louisiana and I have Hurricane Laura power issues.

I will post the errors I am getting when I get power back.
0
BigEagle OP
Aug ’20
For this code inside the view controller inside rightmousedown 

Code Block 
 let theMenu = popupMenuForValue(absMin: 1, absMax: 10)
  NSMenu.popUpContextMenu(theMenu, with: theEvent, for: Self) 

I get this error "Cannot convert value of type Self.type to expected argument NSView.

Then for this code
Code Block 
 @objc func setMaxi(_ sender: NSMenuItem) {
          selectedMaxFromMenu = sender.tag
        }

I get this error "Cannot find selectedMaxFromMenu in scope" .. I think this is due to the first error I am getting.

Also, I found a tutorial on context menus at appcoda website "macOS Programming: Using Menus and the Toolbar
" that is also helpful, but in this example I don't see how the context menu is connected to the right mouse button?

please advise
0
Claude31 OP
Aug ’20
Hope you are all safe from hurricane and did not suffer damages.


Code Block 
 let theMenu = popupMenuForValue(absMin: 1, absMax: 10)
 NSMenu.popUpContextMenu(theMenu, with: theEvent, for: Self)

I get this error "Cannot convert value of type Self.type to expected argument NSView.
My code says self, not Self.


For the second, 

Code Block 
 @objc func setMaxi(_ sender: NSMenuItem) {          selectedMaxFromMenu = sender.tag        }

I get this error "Cannot find selectedMaxFromMenu in scope" .. I think this is due to the first error I am getting.

You need to declare a var in the class:
Code Block 
    fileprivate var selectedMaxFromMenu = 0   


It should work with those changes (it works so in my app).
0
BigEagle OP
Aug ’20
Caulde,

No damage problem here the storm went far enough west but not so on the Texas Louisiana borders...

My bad on the error Self which should be self.. I copied wrong text when I posted. Originally I copied and pasted your code. I was playing around with that code (self). The error I got is as follows:
cannot convert value of type 'CustViewController' to expected NSView

So, I think I have my right mouse func is in the wrong class. I have it in the view controller class. Or I need more code inside the controller class.

How do I fix this?

Thanks for your help.

0
Claude31 OP
Aug ’20
In my set up:

  • I have a window

  • inside this window, an NSView (with a type : GrilleView), in which I detect the click

  • rightMouseDown is in GrilleView.Swift

Can you map your own setup on this ?
0
BigEagle OP
Aug ’20
I have the following:

  • A window with a custom view controller -  CustViewController: NSViewController

  • Inside this I have the right mouse detect.




0
Claude31 OP
Aug ’20
In this case, NSViewController has an NSView.

Try:

Code Block 
NSMenu.popUpContextMenu(theMenu, with: theEvent, for: self.view)

0
BigEagle OP
Aug ’20
Success. Thanks Claude for all the help. Although you gave me the answer I did learn from it.


1
Claude31 OP
Aug ’20
Great. Good continuation. Don’t forget to close the thread on the correct answer.
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