[Cuis-dev] TextModelMorph comments

[Juan Vuletich]

Hi Mark,

Thanks for this initiative. I've just pushed your comments.

Cheers!

On 4/2/2025 4:11 PM, Mark Volkmann via Cuis-dev wrote:
> As a follow up to the Cuis meeting today, here's my initial progress 
> on two of the comments. I want to get some feedback on this before I 
> add more comments to the methods of this class. Fire away!
>
> For the TextModelMorph class I have the following:
>
> This is a morph that enables users to view and edit text.
>
> The main features of this class include:
> - using either a TextModel or TextProvider to hold the text being edited
> - styling and text wrapping (provided by InnerTextMorph)
> - scrolling with scrollbars (provided by superclass PluggableScrollPane)
>
> There are two approaches for creating instances. One approach is to 
> hold the text value in a TextModel object. The class methods 
> withModel: and withText: support this. The other approach is to hold 
> the text value in a TextProvider. The class methods that begin with 
> textProvider: support this. For examples, see the method comments in 
> those class methods.
>
> The default background color is white. A border is only displayed when 
> it has focus. One way to make its bounds apparent when it doesn't have 
> focus is to set the background color of the parent component. Another 
> way is to set the background color of this morph.
>
> By default, words that would extend past the right side wrap to the 
> next line. To prevent wrapping, send an instance #wrapFlag: with an 
> argument of false.
>
> The default size is 200 by 100, set in the initialize method of the 
> superclass PluggableMorph. Depending on the font, the default size 
> displays around four lines of wrapping text with around 17 characters 
> per line. To change the size, send an instance #morphExtent: with a 
> Point argument that specifies a width and height. The size should 
> include space for scroll bars if they may be needed. Setting the 
> height to zero causes it to actually be set to the height required for 
> a single line in the current font.
>
> Related classes include TextModel, TextProvider, PluggableScrollPane, 
> and InnerTextMorph.
>
> For the class method testProvider:textGetter:textSetter: I have this:
>
>  Answer a new instance that gets the text from aTextProvider.
>
> aTextProvider must have corresponding getter and setter methods
> that manage the text to be edited.
> For example, we can use an instance of the Exception class
> which has the methods messageText and messageText:.
>
> Select and evaluate the code below.
> In the Inspector that appears, select the messageText instance variable.
> In the TextModelMorph that appears, change the text
> and note how it updates in the Inspector.
>
> | exception morph |
> exception := Exception new.
> exception messageText: 'initial'.
> exception inspect.
> morph := TextModelMorph textProvider: exception textGetter: 
> #messageText textSetter: #messageText:.
> morph acceptOnAny: true.
> morph openInWorld.
>
> -- 
> R. Mark Volkmann
> Object Computing, Inc.


-- 
Juan Vuletich
cuis.st
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