Squeak-dev December 2006

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112 participants
144 discussions

What happened to the SqueakDoc swiki ?
by karl 11 Dec '06

11 Dec '06

I was updating links from squeak.org to the new wiki.squeak.org and noticed some links to the old SqueakDoc swiki were dead. http://minnow.cc.gatech.edu/SqueakDoc.11 Anybody have any info or a backup of these documents ? And should we do static backups of all the documents linked in from Georgia Tech but not on the swiki.squeak.org ? Karl

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sample application of Traits usage
by Diego Tubello 10 Dec '06

10 Dec '06

Hi, I need me make a demo about the use of Traits and I need an example. I need something a bit bigger than the ones provided in the Trait examples package (TMagnitude, Circle). Any idea ? Thanks, Diego

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Changes File Size Limit Reached
by Todd Blanchard 10 Dec '06

10 Dec '06

This is extremely nasty! I need instructions on how to manually shorten a changes file. I cannot do anything like condenseChanges because of errors with the Date class right now. I cannot fix the errors because I cannot make more changes because it insists on logging them. Efforts to manually shorten the changes file so far have rendered the image useless. Help!

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More on Squeak.org Win32 3.9
by Blake 10 Dec '06

10 Dec '06

Also the Download link for Windows on Squeak.org actually downloads the Mac vesion. I'm guessing Win32 usage isn't that high. <s> ===Blake===

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Re: PluggableListMorphs
by Jerome Peace 10 Dec '06

10 Dec '06

PluggableListMorphs Hi Andrew, You looked into this pretty deeply. The current behavior is a response to mantis reports: 0001347: Doubleclick on list entries not work... http://bugs.impara.de/view.php?id=1347 0002452: For double clicking on entrys to wor... http://bugs.impara.de/view.php?id=2452 0002494: Doubleclicking on inspector iv - Imp... http://bugs.impara.de/view.php?id=2494 >I see no reason why the ability to double-click a selection >should have anything to do with whether deselection is possible. The general rule (across all platforms and programs not just squeak) is that before you get a doubleclick event you will see a click event. It is the click event that selects/deselects when "auto" deselect is true. So if you double click over an unselected item. You get click -> select dblclick-> open inspector on selection. But if the item is already in the selected state then doubleclick fails unless auto deselect is set to false. (Because the click deselects and doubleclick cannot find the selection.) With autodeselect false the deselection does not occur and doubleclick succeeds. I fixed up some tortured logic at the selection end of things (PLM>>mouseup:) so that actions only happen when the selection state changes. And then I patched anyplace in browser creation where I was sure there was a conflict. The red flag for this was when a PLM was given a doubleclick action. >Is the >problem here that rather than fix the doubleClick bug, we have >introduced a second bug (not being able to unselect the current >selection in the class-list pane)? Two part ans. The doubleClick sequence may be buggy. It is not fixed. Its fixing does not impact this problem because it is the click behavior (which is supposed to happen) that will deselect at the wrong time. This leaves the remainder of the question: >Have we introduced a second bug >(not being able to unselect the current >selection in the class-list pane)? In a word, yes. It was a tradeoff at the time and you are the first one to notice and complain. (Sharp eyes and good work.) It should be possible to write something that allows deselection in a list. One of the things fixed in PLM>>mouseup: is the logic that made it dangerous to send 0 when 0 was already the selection. Now that can be done safely, without causing a second activation. People had coded a work around that never allowed clicking outside the list (above or below) to send 0 (they always choose the first or last list item.) If that is fixed then mousing down on the list and mousing up outside of it would be a logical way to deselect all items by setting the selection to 0. If you would write this up as a mantis report (with or with out a fix and tests) that would be a good start to getting this problem attended to. Yours in service, -- Jerome Peace >Andrew P. Black black at cs.pdx.edu >Sat Dec 9 05:21:35 UTC 2006 wrote: > > >Does anyone out there understand how PluggableListMorphs are supposed >to work? > >In the System Browser, if a Class Category is selected in the first >pane, and you click it, it de-selects. In the third pane, if a >message protocol is selected and you click it, it de-selects. In the >fourth pane, if a method is selected and you click it, it deselects. > >However, in the second pane, if a class name is selected and you >click it, nothing happens. > >Why is this. Well it turns out to be because an instance variable >called "autoDeselect" is false. (The default is true). > >In Browser>>buildMorphicClassList it says: > > myClassList := PluggableListMorph new > ... > myClassList doubleClickSelector: #browseSelectionInPlace. > "For doubleClick to work best disable autoDeselect" > myClassList autoDeselect: false . > ^myClassList > >In PluggableListMorph>>mouseUp: evt it says: > >mouseUp: event > "The mouse came up within the list; take appropriate action" > | row | > row := self rowAtLocation: event position. > ... > row == self selectionIndex > ifTrue: [(autoDeselect ifNil: [true]) ifTrue:[row == 0 ifFalse: >[self changeModelSelection: 0] ]] > ifFalse: [self changeModelSelection: row]. > Cursor normal show > >Setting row to 0 leaves nothing selected in the list. But self >changeModelSelection: 0 seems not to change the selection at all. >Strange. > >I can't figure this out. autoDeselect seems like it should be called >isDeselectionPossible; there is nothing "auto" about manually >clicking on a selection to deselect it. But I see no reason why the >ability to double-click a selection should have anything to do with >whether deselection is possible. I do know that it used to be: when >you tried to double-click a selected item (as in the inspector, to >spawn another inspector) the selection would be cancelled. I >regarded this as a bug in the implementation of double-click, which >(I think) sent a doubleClick event and then a mouseUp event. Is the >problem here that rather than fix the doubleClick bug, we have >introduced a second bug (not being able to unselect the current >selection in the class-list pane)? > >Can anyone shed any light? > > Andrew > > ____________________________________________________________________________________ Yahoo! Music Unlimited Access over 1 million songs. http://music.yahoo.com/unlimited

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Re: PluggableListMorphs
by Frank Urbach 09 Dec '06

09 Dec '06

Hi Andrew, I think you should'nt work directly with the PluggableListMorph. Here an example from my own application: planningWidget ^ PluggableListMorph on: self list: #orderList selected: #orderListIndex changeSelected: #orderListIndex: menu: #orderListMenue: keystroke: nil The #orderListIndex: is an accessor to the instance variable orderListIndex. When you use the #listOrderIndex: 0 you have to tell your ui something was changed. These you can do with self changed: #orderListIndex. It works in my application. Hope this helps. Cheers, Frank

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PluggableListMorphs
by Andrew P. Black 09 Dec '06

09 Dec '06

Does anyone out there understand how PluggableListMorphs are supposed to work? In the System Browser, if a Class Category is selected in the first pane, and you click it, it de-selects. In the third pane, if a message protocol is selected and you click it, it de-selects. In the fourth pane, if a method is selected and you click it, it deselects. However, in the second pane, if a class name is selected and you click it, nothing happens. Why is this. Well it turns out to be because an instance variable called "autoDeselect" is false. (The default is true). In Browser>>buildMorphicClassList it says: myClassList := PluggableListMorph new ... myClassList doubleClickSelector: #browseSelectionInPlace. "For doubleClick to work best disable autoDeselect" myClassList autoDeselect: false . ^myClassList In PluggableListMorph>>mouseUp: evt it says: mouseUp: event "The mouse came up within the list; take appropriate action" | row | row := self rowAtLocation: event position. ... row == self selectionIndex ifTrue: [(autoDeselect ifNil: [true]) ifTrue:[row == 0 ifFalse: [self changeModelSelection: 0] ]] ifFalse: [self changeModelSelection: row]. Cursor normal show Setting row to 0 leaves nothing selected in the list. But self changeModelSelection: 0 seems not to change the selection at all. Strange. I can't figure this out. autoDeselect seems like it should be called isDeselectionPossible; there is nothing "auto" about manually clicking on a selection to deselect it. But I see no reason why the ability to double-click a selection should have anything to do with whether deselection is possible. I do know that it used to be: when you tried to double-click a selected item (as in the inspector, to spawn another inspector) the selection would be cancelled. I regarded this as a bug in the implementation of double-click, which (I think) sent a doubleClick event and then a mouseUp event. Is the problem here that rather than fix the doubleClick bug, we have introduced a second bug (not being able to unselect the current selection in the class-list pane)? Can anyone shed any light? Andrew

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Funding (not about finding the funds) (was Re: The website points ... How come?)
by Jerome Peace 09 Dec '06

09 Dec '06

Hi Tim, You maybe right. And I am glad to see you are THINKING about funding. That is the task the board must do. The question that always needs asking is "What makes it worthwhile?" (It's an Alan Kay question so I believe its a good one.) Squeak is a small community. The lists are anyway. There is a grand and growing crowd of young seekers. A lot of interest is generated and a lot of interest is turned away by ??? The board has to provide the WILL and a Plan to get squeak to the future. If the will is to have a lot of people learning, using, developing squeak and contributing financial resources. The board has a central role to play. What I am saying in my emails is that WHEN the resources come I wish the board to think of using them to strengthen the center home page (and vicinity) of www.squeak.org because that will strengthen all else that goes on around the unfolding of squeak into what it is meant to be. Thank you for your attention. Yours in service, -- Jerome Peace Funding (was Re: The website points ... How come?) >tim Rowledge tim at rowledge.org >Fri Dec 8 05:22:39 UTC 2006 > >On 7-Dec-06, at 9:16 PM, Jerome Peace wrote: > >> >> Somethings remain more urgent and insistent. We should >> get the board to think about funding news and link >> maintenence. > >It isn't the board that needs to fund {whatever} it's *you*. All of >you. Until we manage to come up with a way of charging a micropayment >per message send we-the-foundation will depend upon donations from >you-the-users. >http://www.squeak.org/Donate/ > >tim ____________________________________________________________________________________ Any questions? Get answers on any topic at www.Answers.yahoo.com. Try it now.

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Squeak download stats?
by Andreas Raab 08 Dec '06

08 Dec '06

Hi - Yesterday someone asked me for the number of users of Squeak and as usual I couldn't give a good answer but then I got a question where I thought I *should* be able to answer which is simply: How many people on average download Squeak? How many have downloaded the latest version (which would mean 3.9 in this context)? So do we have any stats along these lines? Cheers, - Andreas

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Fwd: [Squeakland] Seymour Papert seriously injured
by Frank Caggiano 08 Dec '06

08 Dec '06

Begin forwarded message: > From: "Bob Irving" <irvingb(a)e-lcds.org> > Date: December 8, 2006 8:58:16 EST > To: <squeakland(a)squeakland.org> > Subject: [Squeakland] Seymour Papert seriously injured > > While in Hanoi, he was struck by a motorcycle. > > http://www.boston.com/news/local/articles/2006/12/07/ > mit_figure_struck_injured_in_hanoi/ > > Of course, all our thoughts and prayers go out to this great man > and friend of Squeak. > > > > > Bob Irving > Middle School Technology Facilitator > Lancaster Country Day School > Lancaster, PA > Blog: http://cougar.e-lcds.org/wordpress/ > "In times of change, learners inherit the earth, while the Learned > find > themselves equipped to deal with a world that no longer exists." > Eric Hoffer > _______________________________________________ > Squeakland mailing list > Squeakland(a)squeakland.org > http://squeakland.org/mailman/listinfo/squeakland ------------------------ Frank Caggiano frankcag at crystal-objects dot com http://www.crystal-objects.com The best education for the best is the best education for all. Robert Maynard Hutchins

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