Squeak-dev April 2008

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146 participants
187 discussions

Reflection about using Squeak/Smalltalk to write educative application
by Hilaire Fernandes 18 Apr '08

18 Apr '08

I am writing a small series of article to advocate it. http://blog.ofset.org/hilaire/index.php?post/2008/04/17/Why-you-could-consi… Hilaire

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Transcript in front
by Jimmie Houchin 17 Apr '08

17 Apr '08

Hello, I am writing some tools which are importing data from a website, extracting the data and making them usable for the new website. Currently I am displaying data in the transcript as a simple means to view progress of the application. But the application blocks the UI and sometimes I forget to put the Transcript at the front of the other windows so that I can view the progress. Yes I know it is primitive, but it works and doesn't require much time to do. Is there any way I can call a method to make the Transcript on top in front when I execute this application? Any help greatly appreciated. Jimmie

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Squeak 3.10 and Whisker (new tree view)
by Flying Dutchman 17 Apr '08

17 Apr '08

Hi, I've tried to install Whisker in a 3.10 image, but found that the new tree view cuts the text of the items in the tree. This makes Whisker unusable. I tried different fonts but that does not seem to make any difference. Anybody else noticed it? Can I do something about it, should I install something additional? Can I revert back to the 3.9 tree view? Thanks Ted -- View this message in context: http://www.nabble.com/Squeak-3.10-and-Whisker-%28new-tree-view%29-tp1674401… Sent from the Squeak - Dev mailing list archive at Nabble.com.

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versioning objects
by Jimmie Houchin 17 Apr '08

17 Apr '08

Hello, I am writing a web app and I need to version the attributes of my objects so that I can enable undo capabilities. Is there a best practices way to offer such? Currently I am implementing accessors which simply create an OrderedCollection for each attribute. id: anObject id ifNil: [ id := OrderedCollection new. id add: anObject]. (id = anObject) ifFalse: [id add: anObject] obj id ^ id last Is there a more standard or better way to offer such features? Any wisdom greatly appreciated. Jimmie

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Morphic issues / extras
by Robert Hawley 17 Apr '08

17 Apr '08

In case these are of any use to anyone: 1. There was not a morphic scripting Tile for doing simple 'while' loops, so I have implemented one. It is in SqueakMap and it is called: WhileLoopForMorphicScripting. 2. Due to a lack of availability of reasonable demonstrators, I have implemented a CalculatorMorph as a demo application (also in SqueakMap). 3. I found it irritating that it is not easy to write very simple straightforward morph code in workspaces (see the example below) or to write methods rather than scripts - you have to know about players and costumes and do idiocyncratic things like call 'assuredPlayer'. While this is ok for serious programming, it is clumsy for the initial teaching of Smalltalk. What I wanted was something that is like traditional turtle programming in traditional (Seymour Papert type) Logo. To get around the problem have written a TurtleMorph (also on SqueakMap). It is somewhat irreligious (it traps doesNotUnderstand) but it does mean that you can do each of the following couple of lines (and execute them one at a time) without getting an error (apart from setting X to be a global variable of course): X := TurtleMorph new openInHand X forward: 99 The reason this is an issue is that you will get an error if you do the same with a standard morph. Try: X := EllipseMorph new openInHand. X forward: 99 Morphic scripts put their code into a 'player' which is also not very obvious for simple programming - with TurtleMorph you can put methods into the TurtleMorph class. I got shot-down when I suggested that all morphs should behave this way (costumes and players are important at a deeper level and doesNotUnderstand is unethical (although fun sometimes)). However, I see no problem in having a TurtleMorph that gets round this. If anyone has a better solution please tell me where I have gone off-track. Thanks.

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Morphic issues / extras
by Robert Hawley 17 Apr '08

17 Apr '08

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Re: [squeak-dev] Transcript in front
by Gary Chambers 16 Apr '08

16 Apr '08

Fair. ----- Original message ----- From: Bert Freudenberg <bert(a)freudenbergs.de> To: The general-purpose Squeak developers list <squeak-dev(a)lists.squeakfoundation.org> Sent: Wed, 16 Apr 2008, 21:26:40 BST Subject: Re: [squeak-dev] Transcript in front On 16.04.2008, at 11:58, Jimmie Houchin wrote: > Gary Chambers wrote: >> (SystemWindow allSubInstances select: [:w | >> w model class == TranscriptStream]) >> do: [:w | w comeToFront] >> >> Should do the trick. > > Thanks, working beautifully. This one is better: Transcript dependents do: [:d | d isSystemWindow ifTrue: [d comeToFront]] - Bert -

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TransformMorph - clipping
by Jak Delo 16 Apr '08

16 Apr '08

Greetings, how could I disable clipping submorphs of TransformMorph (I didn't find any method and clipSubmorphs: false is useless)? ms

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Re: [squeak-dev] Re: OB columns question
by Ken G. Brown 16 Apr '08

16 Apr '08

Perhaps you might want to have a look at PackagePaneBrowser, it appears to have the capability to adjust pane widths. PackagePaneBrowser open. Ken G. Brown At 5:00 AM -0700 4/13/08, squeak-dev-request(a)lists.squeakfoundation.org apparently wrote: >Date: Sat, 12 Apr 2008 12:39:43 -0500 >From: "itsme213" <itsme213(a)hotmail.com> >Subject: [squeak-dev] Re: OB columns question >To: squeak-dev(a)lists.squeakfoundation.org >Message-ID: <ftqs4v$v62$1(a)ger.gmane.org> > >"Colin Putney" <cputney(a)wiresong.ca> wrote > >> Nope. Sorry. > >OK. Do you think this is reasonably feasible? If so, could you suggest where >I might start looking? > >Thanks - Sophie

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Re: [V3dot10] Squeak 3.10 release uses 16bits display depth
by Edgar J. De Cleene 16 Apr '08

16 Apr '08

El 4/16/08 5:59 AM, "Damien Cassou" <damien.cassou(a)gmail.com> escribió: > Hi, I thought it was fixed but I have just noticed it is not the case. What > happened and what can we do? Bye -- Damien People could change depth easily ... I just tired of complaints, of not seen 3.10 in "official" sites, of people messing with others work. So I thinking in give my time only to SqueakRos, where they was more friendly. Edgar

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