Re: [Pharo-users] How to add a contextual menu to a Spec ListModel

May 24, 2017

      2017-05-24 11:25 GMT+02:00 Sven Van Caekenberghe <sven@stfx.eu>:
...
Hi,
I am struggle a bit in find the right way to add a contextual menu to a
Spec ListModel.
Consider:
ListModel new
  title: 'List Example';
  items: Smalltalk allClasses;
  openWithSpec.
I would like to add a right-click contextual menu to the list, with for
example a 'Browse' action. I can't find such a simple example. I know there
is a #menu: option, I can see some usages in my image, but they seem to do
different things. What would be the recommended approach ?
ListModel new
  title: 'List Example';
  items: Smalltalk allClasses;
  "menu: [ ];"
  openWithSpec.
Thanks,
Sven
PS: Probably the reference to the #selectedItem of the ListModel for the
action is hard to write in a one-liner, that is not a requirement.
It is a problem or at least confusing that the menu: method does not uses a
MenuModel, but a Morphic menu.

If you don't want to touch a Morphic class from within the ListModel,
you can do it like it is done in some tools, just ignore the MenuMorph and
instantiate a new MenuModel and call
buildWithSpecAsPopup.

Or add your menu items  to the menu argument:

l:=ListModel new.
l
  title: 'List Example';
  items: Smalltalk allClasses;
  menu: [:menu :shifted |
        (menu
            add: 'Browse'
            target: l selectedItem
            selector: #browse)
            isEnabled: l selectedItem notNil.
            "return the menu object"
            menu
            ];
  openWithSpec.

Re: [Pharo-users] How to add a contextual menu to a Spec ListModel

Nicolai Hess