From: Jakub Travnik <j.travnik@...>
Date: 2001-10-26T09:35:13+09:00
Subject: [ruby-talk:23385] Re: GUI / was [ANN] RubyInRubyParser 0.1-pre-alpha

Eli Green wrote:

> For example:
> 
> window = Window.new
> button = Button.new
> def button.activate
> 	print "Click!"
> end
> window.add(button)
> window.run


How to deal with multiple windows and positioning with this model?

> Or something like that. The point is that Ruby has an event model already
> written for us .. just redefine that instance's method!


That's idea I use in JTTui (my text-mode user interface).
I see a big similarity with example above and the way things
are done in JTTui.

JTTui now needs some fixies for bugs I am aware of.
I plan to release it when they are fixed.

> Another very cool thing this could lead to is something like this:
> 
> PersonFactory = Struct.new("Person", :first_name, :last_name, :iq)
> 
> window = Window.new
> table = Table.new
> table.header = ["First Name", "Last Name"]
> table << PersonFactory.new("Joe", "Slopchuck", 210)
> table << PersonFactory.new("Some", "Guy", 160)
> table << PersonFactory.new("Eli", "Green", 10)
> def table.data_for_row(row)
> 	return [row.first_name, row.last_name]
> end
> window.add(table)
> 
> So table would look something like:
> 
> +------------+-----------+
> | First Name | Last Name |
> +------------+-----------+
> | Joe        | Slopchuck |
> | Some       | Guy       |
> | Eli        | Green     |
> +------------+-----------+
> 
> Doing this:
> 
> table.selected_object
> 
> Would return the actual Person object that was inserted previously, giving the
> entire environment a very OO feel. The same could be done for ComboBoxes and
> Lists and such ... a reference to an object would be stored by the widget, but
> the display would be determined by the re-defined format method call.

Nice. Tables like this worth implementing in JTTui (with some modifications
for more general use).
JTTui have already almost general listbox/tree stuff done with same approach.


Jakub Travnik
ICQ: 66770334