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From: mhx@iae.nl (Marcel Hendrix)
Subject: Re: OOP
Newsgroups: comp.lang.forth
Message-ID: <80811995948435@frunobulax.edu>
Date: Sat, 8 Sep 2012 16:54:55 +0200
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Doug Hoffman <glidedog@gmail.com> writes Re: OOP

> On 9/8/12 7:38 AM, Anton Ertl wrote:

>> But yes, for most stuff that I did, objects did not look useful, so I
>> used OOP rarely, and if I did, it's something very simple.

> Years ago I wrote a spreadsheet-like data input class.  It had rows and 
> columns and horizontal and vertical scrolling.  The data (text) was 
> edited directly "in the spreadsheet cell" exactly as can be done with a 
> good spreadsheet like Excel.  The object code (Mops) was non-trivial and 
> included 2-dimensional text array objects, scrollbar objects, font 
> objects, blinking caret objects (which of course were subclasses of line 
> objects), string objects, rectangle objects, and many more object types. 
>  As many of these "editList" objects as desired could of course be 
> placed in a single window, each list could have its own cell width, 
> font, real-time data input filtering algorithm, and so on.  I would not 
> want to try to reproduce that code without OOP.

'Embarassingly object-oriented', but nevertheless, it would make a 
very good example.

How do yo manage the complex hierarchy of objects? I mean, say you want 
to add graphical objects to a cell, and such objects can be plots 
where you need the user to enter and format texts to be used as labels 
along the axes?

-marcel