Beginners June 2010

beginners@lists.squeakfoundation.org

17 participants
15 discussions

Is there a tandard way to attach context menus
by Herbert König 04 Nov '11

04 Nov '11

Hello all, is there a standard way to attach a context menu to a morph? It's fairly easy to do by checking for yellowButtonPressed and manually firing up a MenuMorph. But it is sufficient to implement #addCustomMenuItems:hand: to get an enhanced Halo menu while #addYellowButtonMenuItemsTo:event: and #hasYellowButtonMenu don't help. So is there a predefined way without everybody doing his own? Thanks, Herbert mailto:herbertkoenig@gmx.net

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Omnibrowser help
by Rob Rothwell 14 Aug '11

14 Aug '11

Are there some tips/documentation somewhere on getting the most out of the OmniBrowser? The MulitpleSelection browser looks interesting (sort of like the tabbed browser in VisualWorks), but I don't quite understand its behaviour and what method it decides to show in which pane when you move around or save changes. On the same topic, can anyone point me toward how I could add a new item to the class context menu in the OmniBrowser? I want to add a new template selection menu item (like "new class template" and "new trait template") because I have created a method that creates TWO classes at the same time for an Aida application (A domain model class AND its associated WebApp class). Thanks, Rob Rothwell

4 11

Collaboration with Squeak 2.8
by Clinton Blackmore 21 Aug '10

21 Aug '10

Greetings again. I'm hacking on Scratch, which is based on MIT Squeak, which is based on Squeak 2.8. I want to collaborate with others on a project. Monticello appears to require Squeak 3.1 or later. Is there a way for me to upgrade an image? If not, is there a sensible way to use a revision control system? It appears to me that: 1) collaborators could each create change sets, and e-mail them to each other, for every one to file in (which sounds like it would be confusing; surely I am not understanding something) or 2) every class in the code could be filed out into a directory, standard version control systems could be used, and then every class could be filed back in (which likewise seems daunting). What sort of workflows would you recommend? Cheers, Clinton Blackmore

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Workspace-as-method?
by C. David Shaffer 29 Jun '10

29 Jun '10

Has anyone tried Workspace as method? I'm not talking anything fancy, just "accept" compiles the Workspace contents into a String in a method which, when executed opens the workspace. I'd like my workspaces versioned with my code...maybe there's already a more refined version of this. Or maybe it's a bad idea? Proof of concept attached. David

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[ANN] ESUG Awards 2010
by Luc Fabresse 23 Jun '10

23 Jun '10

Dear Smalltalkers, You are invited to submit your nice Smalltalk based software to the 7th ESUG Innovation Technology Awards. The top 3 teams with the most innovative software will receive, respectively, 500 Euros, 300 Euros and 200 Euros during an awards ceremony at the 18th International Smalltalk Joint Conference 2010 in Barcelona, Spain. No constraints are put on the software except that it should be Smalltalk-based or Smalltalk-related and all flavours of Smalltalk are accepted. More details on the web (submission process, ...): http://www.esug.org/Conferences/2010/Innovation+Technology+Awards Results of the 2009 edition: http://www.esug.org/Conferences/2009/Innovation+Technology+Awards/Winners+a…

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What is the difference between Pharo 1.0 & Squeak 4.1?
by Andy Burnett 21 Jun '10

21 Jun '10

Could someone please explain - in simple/practical terms - the key differences between Pharo and Squeak. Or, if it makes more sense, the reasons why I might choose one over the other, i.e. Pharo is better for xxxx whereas you might use Squeak for yyyy. Cheers Andy

1 0

Deleting unopened morphs after unit tests
by Sean P. DeNigris 19 Jun '10

19 Jun '10

http://wiki.squeak.org/squeak/428 says: When you create Morphs, even if you do not do an openInWorld, you should delete them. ... tearDown aPatchArchiveClient delete However, the method comment for Morph>>delete is: "Remove the receiver as a submorph of its owner and make its new owner be nil." If the morph was not opened in the world, won't the owner of the top-level morph already be nil? I want to update either the wiki or the comment to be in sync, but I'm not sure which is right. Thanks. Sean -- View this message in context: http://forum.world.st/Deleting-unopened-morphs-after-unit-tests-tp2257950p2… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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Creating a System Window containing a Morph and some buttons
by Jeff G 17 Jun '10

17 Jun '10

Hi Everyone, So I am working on porting over a small simulation I wrote for fun in java to squeak, and I am actually stuck at a point before I can get any real work done. The basics of the user interface I would like to offer consist of a SystemWindow containing a custom morph that will handle all of the drawing and updating of the simulation, and some buttons for altering the parameters of the simulation. The morph would take up the largest portion of the screen, say 3/4. I have been wrestling with SystemWindow and Toolbuilder for the last little while and I feel like I must be overlooking something easy to get started with. If I create a system window and add a placeholder morph to it, with a frame of (0@0 corner: 0.5@1) the window becomes blue as it takes on the color of the morph I added and the morph itself becomes white. I would like the morph to retain its color when I add it to the window, and not have the window alter its own color either. Second, if I were to add to morphs side by side, one with a frame of (0@0corner: 0.5@1) and the other with (0.5@0 corner: 1@1), then I will have a splitter in between the morphs and any attempt to drag this splitter results in a debugger popping up. I have been attempting to learn Toolbuilder, but it seems very focused on just that, tools, and I didn't see an appropriate spec for adding just a custom subclass of morph. I may have overlooked something easy here to do so, and so my spec would consist of a pluggableWindow, with its children being a pluggablePanelSpec with pluggableButtons as its children, and some other spec representing the custom morph as the second child of the windowSpec. Any help or pointers towards creating a basic system window with a morph, or a couple of morphs in it, respecting colors and layouts, and being resized with the splitters would be greatly appreciated. Thank you very much for your time, Jeff G!

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MVC programs don't work in Squeak 4.1
by David Burton 15 Jun '10

15 Jun '10

First, please forgive me if this is a F.A.Q., but I can't seem to find any search facility for this email list. (Is there one? Where??) I last used Smalltalk about 20 years ago, and now I'm trying to port that old MVC program to Squeak 4.1 under Windows Vista 32-bit (though "Display version information" in VM Preferences says it is 4.0.2 rather than 4.1). I've run into lots of frustrations with the Squeak user interface, documentation, etc., but I've muddled through. After fixing various obsolete methods, my program seemed to run right up to the point where it sent the open message to the controller. Then it died on the last line of the open method for StandardSystemController. That method is very short: open "Create an area on the screen in which the receiver's scheduled view can be displayed. Make it the active view." view resizeInitially. status := #open. ScheduledControllers scheduleActive: self It dies sending the scheduleActive: message to class ScheduledControllers. When I try to step "Into" the method using the debugger, it goes directly to UndefinedObject(Object)>>doesNotUnderstand: #scheduleActive: self is a StandardSystemController. The class ScheduledControllers isn't even visible in the Browser. What on earth is going on? How can the StandardSystemController's open method be sending a message to an undefined class?!? I found a discussion of this problem on the web at http://objectmix.com/smalltalk/16883-mvc-example-squeak.html and it seems that Squeak doesn't work with MVC programs unless you explicitly open an MVC project. Well, okay, but how hard would it have been to just put a proper error check and helpful message into the open method of StandardSystemController? So I did Projects -> New Project -> New MVCroject, and I got a blank screen, with nothing on it at all. Any of the 3 mouse buttons brings up the same very short menu. Since the 3 mouse buttons all do the same thing, I wondered if the Mouse preferences might be wrong, but I've verified that "3 button mouse" is selected in VM Preferences. (I experimentally tried setting it to "1 button mouse" or both or neither, but nothing made any difference.) That menu was pretty opaque, but finally I managed to Open Browser. But the System Browser looks bad (it's missing the "class" button, for instance). When I tried to open file list, the whole Squeak system froze. (Well, the mouse cursor moves, but none of the mouse buttons do anything; I had to kill it with Process Explorer.) I restarted and tried Open -> file... This was a little better -- it tried to paint a file browser, but failed for the most part. Rolling the mouse wheel up and down revealed some file names, but nothing would make it do anything with those files. It painted a big red ugly "accept" button, which I tried clicking, but the whole Squeak system just froze again. So... is Squeak unusable for MVC programs? Or is there some trick that I don't know? Dave

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[ANN] ESUG Awards 2010
by Luc Fabresse 10 Jun '10

10 Jun '10

Dear Smalltalkers, You are invited to submit your nice Smalltalk based software to the 7th ESUG Innovation Technology Awards. The top 3 teams with the most innovative software will receive, respectively, 500 Euros, 300 Euros and 200 Euros during an awards ceremony at the 18th International Smalltalk Joint Conference 2009 in Brest, France. No constraints are put on the software except that it should be Smalltalk-based or Smalltalk-related and all flavours of Smalltalk are accepted. More details on the web: http://www.esug.org/Conferences/2010/Innovation+Technology+Awards Results of the 2009 edition: http://www.esug.org/Conferences/2009/Innovation+Technology+Awards/Winners+a… Luc

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Beginners June 2010