issue with entry onChange event

steve64

I found issues with using the onChange() event for ui.Entry objects.
If you try to filter the allowed characters, the event handler goes to a kind of infinite recursion:

function my_entry:onChange()
self.text = string.gsub(self.text, "A", "X")
end

Samir

Yes if you change Entry.text property it will throw a new onChange event and so on...
Don't know if it's a bug as any Entry's text change will throw an onChange() event... I will see what can be done.

steve64

I really need a way to filter the characters accepted by the Entry widget. Using onChange was a possibility but currently impossible due to recursion. Maybe you can think about a string pattern defining what is valid. Or you can add a 'onEdit' event that can get self.text and change it without triggering onChange

esferatec

You can use the modified property.

function my_entry:onChange()
  if self.modified then
    self.text = string.gsub(self.text, "A", "X")
  end
end

Now there is another problem: whenever the text property is set, the cursor position is 0. It seems that this has changed with some update.

Samir

Yes it was in LuaRT 1.7.0 that the cursor position is now set to the start of the text when set (if not the text is ugly and only the last letters are shown)