<div dir="ltr">The conclusion I'm reaching is that the necessary events to be notified of every change to the value of a TextModelMorph aren't really in place, at least not to support what I'm trying to do. It is far simpler to just do this:<div> </div><div>initialize | tmm | tmm := TextModelMorph withText: '' :: acceptOnAny: true; askBeforeDiscardingEdits: false. tmm keystrokeAction: [:event | tmm text print. ]. SystemWindow new addMorph: tmm; openInWorld. </div></div> <div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Mar 24, 2025 at 12:41 PM Weslleymberg Lisboa <<a href="mailto:weslleym.lisboa@gmail.com">weslleym.lisboa@gmail.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Thats interesting... I tested it on a clean image updated to #7088. It asks to save the file on the first key stroke and generates the #clearUserEdits every time. Attached is a FileOut of the class I used. When inserting text, TextModel's actualContent is mainly changed through TextModel>>#basicReplaceFrom:to:with: and not by #actualContents:. Unfortunately, I think this is the furthest we can go with a clean base image. Anything beyond that will require you to change it or subclass TextModel or TextModelMorph to make it generate the desired notifications. I tried modifying #basicReplaceFrom:to:with: to include "self changed: #actualContents" but it caused a bug that makes cursor jump to the beginning of the string on every key stroke. Don't know why... since #basicReplaceFrom:to:with: does note return anything specific. Em 24/03/2025 09:41, Mark Volkmann escreveu: > Your solution does cause the update: method to be called, but only on > the first keystroke in the TextModelMorph. The argument passed to > update: is the symbol #clearUserEdits. I want a solution that invokes > update: on every keystroke. I know I could listen for key events, but > I'd really like to find a solution that utilizes the dependency > mechanism. Here is the latest code in the initialize method: > > initialize > | tmm | > > tmm := TextModelMorph withText: '' :: acceptOnAny: true. > tmm model addDependent: self. > SystemWindow new > addMorph: tmm; > model: tmm model; > openInWorld. > > On Sun, Mar 23, 2025 at 10:24 PM Weslleymberg Lisboa > <<a href="mailto:weslleym.lisboa@gmail.com" target="_blank">weslleym.lisboa@gmail.com</a> <mailto:<a href="mailto:weslleym.lisboa@gmail.com" target="_blank">weslleym.lisboa@gmail.com</a>>> wrote: > > This works: > > initialize > > | tmm window | > > tmm := TextModelMorph withText: '' :: acceptOnAny: true. > > "tmm model when: #changed: send: #update: to: self. > (Samething as below)" > tmm model addDependent: self. > > SystemWindow new addMorph: tmm; model: tmm model; openInWorld. > > > update: anEvent > > (anEvent asString, ' triggered!') print. > > Have no idea at the moment why this works and your example doesn't. But > I looked on how TextEditor class>>#open and SystemWindow > class>>#editString:label:wrap: does it to see what needs to be set > before opening the window. > > > Em 23/03/2025 18:31, Mark Volkmann escreveu: > > I must be doing a poor job of describing what I want to achieve. > > I've boiled it down to the minimum code needed to demonstrate. > > Here are the steps: > > > > - create a subclass of Object > > > > - add the following instance methods > > > > initialize > > | tmm | > > > > tmm := TextModelMorph withText: '' :: acceptOnAny: true. > > SystemWindow new addMorph: tmm; openInWorld. > > > > update: arg > > 'update was called' print > > > > What can I do in the initialize method so update: is called after > every > > keystroke in the TextModelMorph? > > Here are two things I tried that do not work: > > > > tmm model addDependent: self. > > > > tmm model when: #actualContents send: #update: to: self. > > > > On Sun, Mar 23, 2025 at 11:45 AM Weslleymberg Lisboa via Cuis-dev > <cuis- > > <a href="mailto:dev@lists.cuis.st" target="_blank">dev@lists.cuis.st</a> <mailto:<a href="mailto:dev@lists.cuis.st" target="_blank">dev@lists.cuis.st</a>> <mailto:<a href="mailto:cuis-" target="_blank">cuis-</a> > <a href="mailto:dev@lists.cuis.st" target="_blank">dev@lists.cuis.st</a> <mailto:<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a>>>> wrote: > > > > TextModel generates some events. Browse senders of #changed: > to see > > it. Maybe the event that #addDepedent: listens to is not the > one you > > need. > > > > Cuis use the Observer Pattern as a dependency mechanism (see > [1]) so > > #addDependent: and #changed: are "simplifications" of > #when:send:to: > > and #triggerEvent:with: > > > > IMHO if what you need is to be notified of changes in the > model, I'd > > use it directly instead of making TextModelMorph notify me. > > > > 1 - <<a href="https://github.com/nmingotti/The-Cuis-CookBook/wiki/The-" rel="noreferrer" target="_blank">https://github.com/nmingotti/The-Cuis-CookBook/wiki/The-</a> > <<a href="https://github.com/nmingotti/The-Cuis-CookBook/wiki/The-" rel="noreferrer" target="_blank">https://github.com/nmingotti/The-Cuis-CookBook/wiki/The-</a>> > > Dependency-Mechanism--3 <<a href="https://github.com/nmingotti/The-" rel="noreferrer" target="_blank">https://github.com/nmingotti/The-</a> > Cuis- <<a href="https://github.com/nmingotti/The-Cuis-" rel="noreferrer" target="_blank">https://github.com/nmingotti/The-Cuis-</a>> > > CookBook/wiki/The-Dependency-Mechanism--3>> > > > > > > Em 23 de março de 2025 11:53:10 BRT, Mark Volkmann via Cuis-dev > > <<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a> <mailto:<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a>> > <mailto:<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a> <mailto:<a href="mailto:cuis-dev@lists.cuis.st" target="_blank">cuis-dev@lists.cuis.st</a>>>> > escreveu: > > > > As far as I can tell,TextModelmorph does not > send#changed:every > > time its value changes, so that prevents me from > listening for > > updates. I see that the TextModelmethodactualContents:does > > send#changed:, but that is not invoked on every change to > > aTextModelMorpheven when it is configured > withacceptOnAny: true. > > > > On Sun, Mar 23, 2025 at 9:38 AM <<a href="mailto:ken.dickey@whidbey.com" target="_blank">ken.dickey@whidbey.com</a> > <mailto:<a href="mailto:ken.dickey@whidbey.com" target="_blank">ken.dickey@whidbey.com</a>> > > <mailto:<a href="mailto:ken.dickey@whidbey.com" target="_blank">ken.dickey@whidbey.com</a> > <mailto:<a href="mailto:ken.dickey@whidbey.com" target="_blank">ken.dickey@whidbey.com</a>>>> wrote: > > > > On 2025-03-23 06:35, Mark Volkmann via Cuis-dev wrote: > > > > > ... > > > myTextModelMorph addDependent: self. > > .. > > > > > > I have a few questions. > > > - Are there reasons why I should not want this > ability? > > > > Generally, Morphs are Views and update to reflect > changes in an > > underlying Model. > > > > A Morph can be a Model if sensible. > > > > > - Would it be better to listen for changes on the > > underlying TextModel? > > > > IMHO, yes. > > > > $0.02, > > -KenD > > > > > > > > > > -- > > Att. > > Wéslleymberg Lisboa > > Graduado em Sistemas de Informação > > Docente no IFFluminense - Campus Itaboraí > > Ex-Bolsista de IC do Núcleo de Computação Científica (NC2-IFF) - > > Projeto IFF Aerospace > > Github: <a href="https://github.com/weslleymberg" rel="noreferrer" target="_blank">https://github.com/weslleymberg</a> <<a href="https://github.com/" rel="noreferrer" target="_blank">https://github.com/</a> > weslleymberg> <<a href="https://github.com/" rel="noreferrer" target="_blank">https://github.com/</a> <<a href="https://github.com/" rel="noreferrer" target="_blank">https://github.com/</a>> > > weslleymberg> > > Tel.: +55 22 99931-2376 > > -- > > Cuis-dev mailing list > > <a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a> <mailto:<a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a>> > <mailto:<a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a> <mailto:<a href="mailto:Cuis-dev@lists.cuis.st" target="_blank">Cuis-dev@lists.cuis.st</a>>> > > <a href="https://lists.cuis.st/mailman/listinfo/cuis-dev" rel="noreferrer" target="_blank">https://lists.cuis.st/mailman/listinfo/cuis-dev</a> <https:// > <a href="http://lists.cuis.st/mailman/listinfo/cuis-dev" rel="noreferrer" target="_blank">lists.cuis.st/mailman/listinfo/cuis-dev</a>> <https:// > > <a href="http://lists.cuis.st/mailman/listinfo/cuis-dev" rel="noreferrer" target="_blank">lists.cuis.st/mailman/listinfo/cuis-dev</a> <<a href="http://lists.cuis.st/" rel="noreferrer" target="_blank">http://lists.cuis.st/</a> > mailman/listinfo/cuis-dev>> > > > > > > > > -- > > R. Mark Volkmann > > Object Computing, Inc. > > -- > Wéslleymberg Lisboa > Graduado em Sistemas de Informação > Docente no IFFluminense - Campus Itaboraí > > > > -- > R. Mark Volkmann > Object Computing, Inc. -- Wéslleymberg Lisboa Graduado em Sistemas de Informação Docente no IFFluminense - Campus Itaboraí </blockquote></div><div> </div><div> </div>-- <div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div>R. Mark Volkmann</div><div>Object Computing, Inc.</div></div></div></div></div></div></div></div>