Squeak-dev April 2003

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171 participants
517 discussions

[Q} findClass with too many matches (Bug ?)
by Martin Drautzburg 06 May '03

06 May '03

When I look for Classes matching e.g. "e" I get a "space is low" warning and no results. The same happens when I look for "Morph". I undestand that there must be a limit to the number of matches, but "space is low" feels a bit strange.

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Aggregated removal script for 3.6
by goran.hultgren＠bluefish.se 02 May '03

02 May '03

Hi all! Just hacked up a load script for performing all registered removals on SM - 10 of them (don't forget Balloon3D - it isn't in the correct category). Read more on http://map2.squeakfoundation.org/sm/packagebyname/aggregated Tested by firing up a vanilla 3.6a-5179, "open package loader" and then install the above package. Answer yes twice and then you have an image somewhat smaller. NOTE: I haven't tried to bring stuff back in yet... :-) But so far so good. regards, Göran

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What makes up a "User" in a Class Object? (was Well factored Objects)
by Darius 01 May '03

01 May '03

I enjoyed Richard A. O'Keefe's treatise on name representation in class objects: "People don't have names. Instead there is a *relation* between people and names." This touches a little on my concerns about Graphics User Interface representation. Please excuse any of my lack of insights for Ive a psychology degree and work as a programmer. [A *real* Computer Analyst] ;) Why is there no persistent class representing the user in total? Shouldnt there be something at the Kernel level? Why is such a person only represented by keyboard strokes and Hand Morphs? Isnt the most cherished person in our programming life, the "user", more than an I/O port? A person has memory, a unique place and time, a skill level, a purpose, a single focus or locus of attention at any moment, modes of communication across devices, learning styles, personality types, and limitations to the above (among a few other things...). Every sent communication and every stored data element has a purpose for a person or a group which is most often lost in todays data representational systems. A person is also a member of several groups for which that person shares an identity an which act as a proxy on their behalf. All this relates directly to the data use and functionality of any application. People dont _have_ fingers. Instead there is a *relation between what people want and what their fingers do. People dont _have_ eyes. Instead there is a *relation* between what they see, what they remember from what they see, what they know. They quickly shift their focus or locus of attention over time. They imagine half of what they see by filling in from memory. They focus on juxtapositions both of whats similar and what contrasts. They compare what they see to a cognitive map or mental heuristics of what they expect. They give attention to the information that has an emotional impact on themselves. Why dont we create class hierarchies of our GUIs to match the already researched rules of cognitive science? At this point I should say But there's also a simple solution." But I cant. The best I can do is refer you to a more detailed exploration of the topic in Jef Raskins The Humane Interface http://humane.sourceforge.net/humane_interface/hollands_review.html Certainly Squeak with its OOP methodology could get us there and gain notoriety in the process. Cheers, Darius

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[ANN] [ENH] FillInTheBlankMorph Look
by diegogomezdeck＠consultar.com 01 May '03

01 May '03

Hi, Attached is a changeset with a renewed look for FillInTheBlankMorph "compatible" with the other look enhancements I made. Comments, as usual, are welcome. Diego PS: What is the next part to change the look?

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Self modifying systems question
by Sten Kvamme 30 Apr '03

30 Apr '03

Hello, Self modifying code is a well known technology. Has anyone done this in Squeak? What I'm seeking for is examples of software that adds to itself (methods and variables) in runtime. I understand from reading the Squeak documentation that it is easy to add a variable to a running object instance for a developer, but is it also possible to do from code without any developer around? Thanks, Sten Kvamme

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RE: [ANN] [ENH] FillInTheBlankMorph Look
by Brent Vukmer 30 Apr '03

30 Apr '03

> On the other side, if we want to change the "notifiers" only > per image (or > per project) a global named Notifier (or something like that) > holding an > implementation of AbstractNofifier (MorphicNotifier, MVCNotifier, > StOutNotifier, etc) is enough and more clear to see. > > These notifier classes will answer to #notify:, #confirm:, > #confirm:options:, etc type of messages. > > > tim > > Cheers, > > Diego Gomez Deck > I like the idea of a per-project Notifier

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RE: [ANN] [Win32] [VM]: 3.4.4 VM released (fix for NT crashes)
by Bruce ONeel 30 Apr '03

30 Apr '03

Hi, Thanks, the ftp site is updated. cheers bruce "Andreas Raab" <andreas.raab(a)gmx.de> wrote: > Yes, this would be good. > > Cheers, > - Andreas > > > -----Original Message----- > > From: squeak-dev-bounces(a)lists.squeakfoundation.org > > [mailto:squeak-dev-bounces@lists.squeakfoundation.org] On > > Behalf Of Bruce ONeel > > Sent: Monday, April 28, 2003 5:31 PM > > To: The general-purpose Squeak developers list > > Cc: 'The general-purpose Squeak developers list' > > Subject: Re: [ANN] [Win32] [VM]: 3.4.4 VM released (fix for > > NT crashes) > > > > > > Should I update the .zip file on the ftp site? > > > > Thanks! > > > > cheers > > > > bruce > > > > "Andreas Raab" <andreas.raab(a)gmx.de> wrote: > > > Richard voici la solution pour Squeak 3.5 NT > > > > > > Hi Guys, > > > > > > I just released a new VM which will hopefully fix the > > crashes reported > > > on > > > NT. Can someone please verify that this it works the way > > I'm thinking it > > > should? ;-) > > > > > > As usual, everything is up at source forge: > > > > > > http://sourceforge.net/project/ > > > showfiles.php?group_id=5506&release_id=155385 > > > > > > Cheers, > > > - Andreas > >

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[ANN] Bricks pre-alpha (morphic enhancement effort - Layouts)
by tblanchard＠mac.com 30 Apr '03

30 Apr '03

Download Location: http://minnow.cc.gatech.edu/squeak/uploads/3186/BrickAlpha.sar This is an early start at a set of UI building blocks I call Bricks. I wasn''t going to share it so soon but I keep seeing questions about layout floating around and I think this could help some people out. Brick grew out of the ProtoMorph class I posted awhile ago. It dynamically steals code from Morph. It hasn''t stolen any new code in awhile so I''m calling it sort of stable. Bricks can coexist with Morphs in a Morphic world, but you can''t embed Morphs in Bricks. I started out to simply improve the usability of layout control. If nothing else but this code (and its control brick) gets adopted I will be very pleased. To try it out, open the halo menu on the white brick embedded in the red lego and select "Layout Options...". You''ll see a struts and springs control that looks remarkably like the one in IB on Mac OS X. Clicking on a strut changes it to a spring or vice versa. The little X closes the control. Play with the settings and then resize the red lego brick using the halo. What could be simpler? The other key change is that I have pulled nearly all of the drawing code out of Morph and split it up into a layered scheme of Painters. A kind of Painter is assigned to a layer. You can add and remove Painters from a brick to change its appearance. Basic painters so far are a BackgroundPainter (which draws the colors or the Lego background), a BorderPainter, CornerPainter (does corner rounding), a hilight painter (puts a translucent gray wash over the component), ShadowPainter, and some others. A brick can still do its own painting along with the Painters. For instance, StringBrick does the string drawing, but you can give it borders and backgrounds by adding painters to it. A brick has been assigned a painter layer and if the brick adds itself to the painter list, its drawOn: method will be called at the appropriate time. There is a DragWrapperBrick that acts as a container for things being dragged. A subclass DragPainterBrick is for dragging painters around. The two pallettes at the top left of the screen are filled with DragPainterWrappers containing BorderPainters or CornerPainters. More work on creating nifty Painter configuration bricks needs to happen for setting up gradients and such in BackgroundPainters. Try dragging and dropping new borders or corner rounders on the red or white bricks to see this work. The drag/drop hilighting is done by adding and removing painters on the bricks on mouseEnter/Leave. Why didn''t I just put this in Morph? After many many many hung systems and wrecked images I decided it was just too dangerous to try to operate on Morph. So I cloned the essentials and work on that. If someone wants to integrate this code back into Morph - please do. I''ve found that I can generally copy most morphs and change their superclass to brick to get something usable right away. Feedback/bug reports are appreciated. -Todd Blanchard

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[ENH][Refactoring] some methods removals (small)
by Marcus Denker 30 Apr '03

30 Apr '03

"Change Set: remove-examples Date: 21 April 2003 Author: Marcus Denker This changeset removes some methods: 1) SecureHashAlgorithm (example, example2). These have been rewritten to use SUnit and are part of the BaseImage Tests Package. 2) URL class>>quickieTest, which has been refactored to use SUnit and is now part of the BaseImage tests package. 3) Random class>example, this is a short introduction how to use Random, it has been moved to the class comment"! -- Marcus Denker marcus(a)ira.uka.de -- Squeak! http://squeak.de

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[ENH] isSymbol [small]
by Marcus Denker 30 Apr '03

30 Apr '03

"Change Set: isSymbol-md Date: 30 April 2003 Author: Marcus Denker This Changeset adds Object>>isSymbol and Symbol>>isSymbol (returning false and true). There are two reasons: 1) I wanted to run a Smacc Parser without having to install the Refactoring Browser or SmaCC development. #isSymbol seems to be everything it needs. 2) There are 13 direct References to the class Symbol via 'isMemberOf: Symbol'. These now can be refactored to use #isSymbol instead." -- Marcus Denker marcus(a)ira.uka.de -- Squeak! http://squeak.de

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