Hi!
Thanks, your fix for nil bindings is better than mine! =)
I am trying to convert your code into a subclass of HelpBrowser
called HelpBrowserB, that has bindings and that in the future
may have other hacks too. My code is attached, but when I
run this

  hb := HelpBrowserB openOn: TerseGuideHelp.
  hb model.

I see that its model is a HelpBrowser, not a HelpBrowserB...
Any idea of how to fix that?
  Cheers & thanks in advance,
    Eduardo





On Tue, 28 Feb 2023 at 15:06, karl ramberg <karlramberg at gmail.com> wrote:

> Hi,
> I sent the wrong version.
> This should work
>
> Best,
> Karl
>
> On Tue, Feb 28, 2023 at 12:40 PM karl ramberg <karlramberg at gmail.com>
> wrote:
>
>> Hi,
>> Try executing this:
>> HelpBrowser initialize
>>
>> Best,
>> Karl
>>
>>
>>
>> On Tue, Feb 28, 2023 at 8:18 AM Eduardo Ochs <eduardoochs at gmail.com>
>> wrote:
>>
>>> Wow! Thanks!!! =) =) =)
>>> But I've tried to put these five lines
>>>
>>>   sm := SimpleSwitchMorph new.
>>>   sm openInWorld.
>>>   bm := SimpleButtonMorph new.
>>>   bm openInWorld.
>>>   bm position: bm position + (0 at 32).
>>>
>>> in a topic window, and then execute the first four lines in a "do it",
>>> then the fifth line in another "do it"... when I tried that I got an
>>> error in this method,
>>>
>>>   HelpBrowser >> bindingOf:
>>>
>>> because it tried to execute
>>>
>>>   bindings includesKey: aString
>>>
>>> with bindings being nil... can you fix that?
>>>
>>>   Thanks in advance! =)
>>>     Eduardo Ochs
>>>
>>>
>>> On Tue, 28 Feb 2023 at 03:27, karl ramberg <karlramberg at gmail.com>
>>> wrote:
>>>
>>>> See change set in attachment for adding dynamic bindings to HelpBrowser.
>>>> It's a proof of concept :-)
>>>>
>>>> Best,
>>>> Karl
>>>>
>>>> On Mon, Feb 27, 2023 at 9:42 AM Eduardo Ochs <eduardoochs at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi Karl,
>>>>>
>>>>> > In HelpBrowser you must declare the variables before using them.
>>>>> > (...)
>>>>> > HelpBrowser does not implement dynamic binding of variables.
>>>>>
>>>>> Yes - my first idea was to ask here what I needed to change in my
>>>>> class TerseGuideHelp to make the "workspace" of its help browser use
>>>>> dynamic biding of variables... but then I spent some hours trying to
>>>>> find the answer myself, and I stumbled on a more low-level question
>>>>> that I found much more askworthy...
>>>>>
>>>>> > You can right click on a Workspace window and a HelpBrowser window
>>>>> > and inspect the model and see the differences.
>>>>>
>>>>> I did that. Are these differences obvious to a trained eye? They
>>>>> weren't to me.
>>>>>
>>>>> > Also browse class Workspace and look at access to variable
>>>>> > 'bindings'.
>>>>>
>>>>> This may be a pointer to searching tools that I need to learn. I saw
>>>>> that if I click on "variables" and then on "bindings" I get a list of
>>>>> the methods in Workspace that access the variable "bindings"... I also
>>>>> tried to fileOut the class Workspace and to read it in Emacs, and I
>>>>> found the same occurrences.
>>>>>
>>>>> Here is an educated guess. Is the method "hasBindingOf:" the main
>>>>> piece needed to make a mini-workspace support dynamic variables? If
>>>>> so, how, exactly? Is there a part of the compiler that calls
>>>>> "hasBindingOf:" when it sees an unknown variable? I couldn't find
>>>>> it...
>>>>>
>>>>>   Cheers,
>>>>>     Eduardo Ochs
>>>>>
>>>>>
>>>>>
>>>>
>>>
>
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