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How can an object have its "self" and "name" instance variables nil after being instantiated?

by Julien Delplanque

Hi, I have an object that override KMCategory and that is initialized and added to "KmRepository default" using #postLoadDoIt: message in BaselineOf after the package is loaded in an image. But once it is loaded I have huge problems with keyboards entries, they do not work any more, I get an exception each time I press a key. If I inspect the Singleton class variable of my category object I can see it contains an instance of my object that have its "self" variable nil and its "name" variable nil. Others variables look fine. How is it possible? I can remove my custom KMCategory by copy/paste code from sublime text to Pharo and left click/do it and then everything is fine with my keyboard: no more exception and it behave correctly. Thanks in advance, Julien

Aug. 25, 2015

Re: [Pharo-users] Multi desktops inside Pharo!

by H. Hirzel

TWM (TilingWindowManager) works fine for me in Pharo 4.0 --HH On 8/25/15, phil(a)highoctane.be <phil(a)highoctane.be> wrote: > FWIW, the TilingWindowManager has some support for this. > > Not sure how it behaves in 4.x|5.x > > Sean did some fixes IIRC. > > Phil > > On Mon, Aug 24, 2015 at 9:00 PM, Julien Delplanque <julien(a)tamere.eu> > wrote: > >> >> On 24/08/15 20:41, Torsten Bergmann wrote: >> >>> Hi Julien, >>> >>> try >>> >>> WorldMorph installNewWorld. >>> >>> which will create a new world. Open a workspace and check that it is >>> there. >>> >>> WorldMorph allInstances >>> >>> If you click in the inspector you will see a morph representation of it >>> - >>> so you >>> see which one is which. >>> >>> Now you have two instances of WorldMorph in your system. One is always >>> connected >>> to the global variable >>> >>> World >>> >>> You can switch as experiment by either: >>> >>> WorldMorph allInstances first install. >>> Display restore >>> >>> or >>> >>> WorldMorph allInstances last install. >>> Display restore >>> >>> The restore is necessary to update the drawing. >>> >>> I think you get the idea from this. As I said - the pieces are there, >>> someone >>> has to connect them. >>> >> Yes, I am exploring messages to see how to do it. I'll probably give a >> try >> tonight. >> >> Thanks for these code snippets anyway :) >> >>> You dont have to thank me - it is good that you brought this into >>> attention again >>> and if you could devote some time in helping to bring such a nice >>> feature >>> also (back) >>> to Pharo again. >>> >>> In case of questions do not hesitate to ask on this list or the >>> pharo-dev >>> list. >>> >>> Thanks >>> T. >>> >>> Gesendet: Montag, 24. August 2015 um 20:31 Uhr >>>> Von: "Julien Delplanque" <julien(a)tamere.eu> >>>> An: "Torsten Bergmann" <astares(a)gmx.de> >>>> Cc: "Any question about pharo is welcome" >>>> <pharo-users(a)lists.pharo.org>, >>>> "StÃ©phane Ducasse" <stephane.ducasse(a)inria.fr>, "Marcus Denker" < >>>> marcus.denker(a)inria.fr>, sean(a)clipperadams.com >>>> Betreff: Re: Multi desktops inside Pharo! >>>> >>>> Thanks a lot for all these tips :) >>>> >>>> I will update the project to match with what is really expected from a >>>> multi world utility. >>>> >>>> Thanks again for the time you take to explain me this. >>>> >>>> Regards, >>>> Julien >>>> >>>> On 24/08/15 20:24, Torsten Bergmann wrote: >>>> >>>>> Hi Julien, >>>>> >>>>> what I remember from history >>>>> >>>>> - Jochen F. Rick had a "JRWorldManager" implemented back in 2010 >>>>> - was discusssed here >>>>> http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td… >>>>> - code is here >>>>> http://forum.world.st/attachment/2242195/0/JRWorldManager.st >>>>> (basically something to manage the desktops) >>>>> - then Sean picked up the idea in 2011 and implemented >>>>> - blog post http://seandenigris.com/blog/?p=767 >>>>> - he provided "MultipleWorlds.2.cs" which I think is lost >>>>> during bugtracker transition >>>>> - later default Pharo image was reworked for the world to have >>>>> WorldMorph instances instead of Squeaks PasteUpMorph, so >>>>> the code of Sean and Jochen would be obsolete anyway >>>>> >>>>> Some tips: >>>>> ========== >>>>> - Pharo has a global called "World" which is pointing to the >>>>> current >>>>> world of displayed morphs, you need to >>>>> switch this and handle/manage new Worlds = Desktops. >>>>> - in older Pharo versions and Squeak this was a PasteUpMorph, now >>>>> it >>>>> is an instance of class "WorldMorph" >>>>> - note that there is a class side method "installNewWorld" with the >>>>> nice comment "let us play God." >>>>> - basically you already have the parts with a DeskopManager and the >>>>> switch via keyboard, you just need >>>>> to play with #installNewWorld and #install method of the worlds >>>>> Note: check the comments of the class and methods in WorldMorph - >>>>> this might be subject to change >>>>> - to get a thumbnail form of the world you can use: >>>>> >>>>> |sizeFactor| >>>>> sizeFactor := 0.3. >>>>> World taskThumbnailOfSize: (Display width * sizeFactor) @ >>>>> (Display height * sizeFactor) >>>>> >>>>> - see how the preview is handled in TaskListMorph >>>>> newPreviewMorph/updatePreview methods to get an idea >>>>> >>>>> So all the pieces of the puzzle are there - just connect them >>>>> correctly. >>>>> Side Note: default Pharo image has the possibility to put an >>>>> external picture somewhere that is used >>>>> by the theme as the background image. Cant remember where >>>>> it is - just browser for "background..." >>>>> methods in the Finder. With multiple desktops I guess >>>>> this >>>>> needs some love as well to have >>>>> a backgorund per desktop. >>>>> >>>>> Hope that helps! >>>>> >>>>> Bye >>>>> Torsten >>>>> >>>>> Gesendet: Montag, 24. August 2015 um 19:46 Uhr >>>>>> Von: "Julien Delplanque" <julien(a)tamere.eu> >>>>>> An: "Torsten Bergmann" <astares(a)gmx.de>, "Any question about pharo is >>>>>> welcome" <pharo-users(a)lists.pharo.org>, "StÃ©phane Ducasse" < >>>>>> stephane.ducasse(a)inria.fr>, "Marcus Denker" <marcus.denker(a)inria.fr>, >>>>>> sean(a)clipperadams.com >>>>>> Betreff: Re: Multi desktops inside Pharo! >>>>>> >>>>>> >>>>>> >>>>>> On 24/08/15 19:32, Torsten Bergmann wrote: >>>>>> >>>>>>> Julien Delplanque wrote: >>>>>>> >>>>>>>> I created a small utility that make possible to have multi >>>>>>>> desktops: >>>>>>>> https://github.com/juliendelplanque/desktopsmanager. >>>>>>>> >>>>>>> Your code works for me in Pharo 5, havent tried in Pharo 4. >>>>>>> >>>>>>> Unfortunately it does only work for Pharo "windows" but not general >>>>>>> morphs. >>>>>>> If you evaluate >>>>>>> >>>>>>> ElipseMorph new openInWorld >>>>>>> >>>>>>> and hit CTRL+SHIFT+J you will see that the morph stays on the >>>>>>> desktop. >>>>>>> So your goodie is a "window switcher" and not a "desktop switcher". >>>>>>> >>>>>> Yes you are right. But it is a first step, I planned to really create >>>>>> "new desktops" in the future, but for now I wrote this fast to have >>>>>> something usable. >>>>>> >>>>>>> I guess it would be better if you would really switch the WorldMorph >>>>>>> instance >>>>>>> referenced by the global "World" variable. >>>>>>> >>>>>>> There already was a solutions once discussed/contributed with code >>>>>>> here >>>>>>> >>>>>>> >>>>>>> http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html >>>>>>> http://seandenigris.com/blog/?p=767 >>>>>>> >>>>>>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it) >>>>>>> can help here, >>>>>>> update the code and merge with yours. >>>>>>> >>>>>> Yes I'm OK to do that. Where can I find this package? >>>>>> >>>>>>> Ideally such a "Switch desktop" possibility would be part of the >>>>>>> standard Pharo 5 image including a small preview of the whole >>>>>>> desktop >>>>>>> similar to what usual operating system window manager do and the >>>>>>> possibility >>>>>>> to provide different backgrounds to the desktops. >>>>>>> >>>>>> It would be really nice to have multiple world by default in pharo >>>>>> images :) >>>>>> >>>>>>> Thanks >>>>>>> Torsten >>>>>>> >>>>>> Julien >>>>>> >>>>>> >>>>>> >>>> >> >> >> >

Aug. 25, 2015

Re: [Pharo-users] http://pharo.org/documentation --> List of dialog windows in Pharo 4.0?

by Nicolai Hess

And there are some examples in class WidgeExample WidgeExample class >>exampleDialogs WidgeExample class >>exampleBasicControls WidgeExample class >>exampleOtherControls 2015-08-25 9:36 GMT+02:00 Stephan Eggermont <stephan(a)stack.nl>: > On 25-08-15 09:09, H. Hirzel wrote: > >> Hello >> >> I am looking for a list of ready made dialog windows in Pharo 4.0 and >> the main API to use them. >> >> - FileDialog, >> > > MindmapNode class>>open > |fileName| > fileName := UITheme current chooseFileIn: World title: 'Choose > file' extensions: nil path: nil preview:nil. > fileName ifNotNil: [(FLMaterializer materializationFromFileNamed: > fileName) > root openInWorld attachAllSubnodes detachAllSubnodes ] > > MindmapNode>>saveMap > |fileName| > fileName := UITheme current fileSaveIn: World title: 'Choose file' > extensions: nil path: nil. > fileName ifNotNil: [ FLSerializer serialize: self toFileNamed: > fileName]. > > Stephan > > >

Aug. 25, 2015

Re: [Pharo-users] http://pharo.org/documentation --> List of dialog windows in Pharo 4.0?

by Stephan Eggermont

On 25/08/15 09:57, H. Hirzel wrote: > Thank you Stephan, in the meantime I did as well a question on the > file dialog on > > http://stackoverflow.com/questions/32198476/how-do-i-ask-the-user-for-a-fil… > > Would you mind putting the answer there as well because of ease of > reference for other people? Yes, and please realize that pushing people to stackoverflow is a really bad idea. We don't have enough influence there to keep relevant questions open. As a small community we get very little reputation and therefore privilege. Stackoverflow is about majority, not about technical excellence. Stephan

Aug. 25, 2015

Re: [Pharo-users] Multi desktops inside Pharo!

by phil＠highoctane.be

FWIW, the TilingWindowManager has some support for this. Not sure how it behaves in 4.x|5.x Sean did some fixes IIRC. Phil On Mon, Aug 24, 2015 at 9:00 PM, Julien Delplanque <julien(a)tamere.eu> wrote: > > On 24/08/15 20:41, Torsten Bergmann wrote: > >> Hi Julien, >> >> try >> >> WorldMorph installNewWorld. >> >> which will create a new world. Open a workspace and check that it is >> there. >> >> WorldMorph allInstances >> >> If you click in the inspector you will see a morph representation of it - >> so you >> see which one is which. >> >> Now you have two instances of WorldMorph in your system. One is always >> connected >> to the global variable >> >> World >> >> You can switch as experiment by either: >> >> WorldMorph allInstances first install. >> Display restore >> >> or >> >> WorldMorph allInstances last install. >> Display restore >> >> The restore is necessary to update the drawing. >> >> I think you get the idea from this. As I said - the pieces are there, >> someone >> has to connect them. >> > Yes, I am exploring messages to see how to do it. I'll probably give a try > tonight. > > Thanks for these code snippets anyway :) > >> You dont have to thank me - it is good that you brought this into >> attention again >> and if you could devote some time in helping to bring such a nice feature >> also (back) >> to Pharo again. >> >> In case of questions do not hesitate to ask on this list or the pharo-dev >> list. >> >> Thanks >> T. >> >> Gesendet: Montag, 24. August 2015 um 20:31 Uhr >>> Von: "Julien Delplanque" <julien(a)tamere.eu> >>> An: "Torsten Bergmann" <astares(a)gmx.de> >>> Cc: "Any question about pharo is welcome" <pharo-users(a)lists.pharo.org>, >>> "StÃ©phane Ducasse" <stephane.ducasse(a)inria.fr>, "Marcus Denker" < >>> marcus.denker(a)inria.fr>, sean(a)clipperadams.com >>> Betreff: Re: Multi desktops inside Pharo! >>> >>> Thanks a lot for all these tips :) >>> >>> I will update the project to match with what is really expected from a >>> multi world utility. >>> >>> Thanks again for the time you take to explain me this. >>> >>> Regards, >>> Julien >>> >>> On 24/08/15 20:24, Torsten Bergmann wrote: >>> >>>> Hi Julien, >>>> >>>> what I remember from history >>>> >>>> - Jochen F. Rick had a "JRWorldManager" implemented back in 2010 >>>> - was discusssed here >>>> http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td… >>>> - code is here >>>> http://forum.world.st/attachment/2242195/0/JRWorldManager.st >>>> (basically something to manage the desktops) >>>> - then Sean picked up the idea in 2011 and implemented >>>> - blog post http://seandenigris.com/blog/?p=767 >>>> - he provided "MultipleWorlds.2.cs" which I think is lost >>>> during bugtracker transition >>>> - later default Pharo image was reworked for the world to have >>>> WorldMorph instances instead of Squeaks PasteUpMorph, so >>>> the code of Sean and Jochen would be obsolete anyway >>>> >>>> Some tips: >>>> ========== >>>> - Pharo has a global called "World" which is pointing to the current >>>> world of displayed morphs, you need to >>>> switch this and handle/manage new Worlds = Desktops. >>>> - in older Pharo versions and Squeak this was a PasteUpMorph, now it >>>> is an instance of class "WorldMorph" >>>> - note that there is a class side method "installNewWorld" with the >>>> nice comment "let us play God." >>>> - basically you already have the parts with a DeskopManager and the >>>> switch via keyboard, you just need >>>> to play with #installNewWorld and #install method of the worlds >>>> Note: check the comments of the class and methods in WorldMorph - >>>> this might be subject to change >>>> - to get a thumbnail form of the world you can use: >>>> >>>> |sizeFactor| >>>> sizeFactor := 0.3. >>>> World taskThumbnailOfSize: (Display width * sizeFactor) @ >>>> (Display height * sizeFactor) >>>> >>>> - see how the preview is handled in TaskListMorph >>>> newPreviewMorph/updatePreview methods to get an idea >>>> >>>> So all the pieces of the puzzle are there - just connect them correctly. >>>> Side Note: default Pharo image has the possibility to put an >>>> external picture somewhere that is used >>>> by the theme as the background image. Cant remember where >>>> it is - just browser for "background..." >>>> methods in the Finder. With multiple desktops I guess this >>>> needs some love as well to have >>>> a backgorund per desktop. >>>> >>>> Hope that helps! >>>> >>>> Bye >>>> Torsten >>>> >>>> Gesendet: Montag, 24. August 2015 um 19:46 Uhr >>>>> Von: "Julien Delplanque" <julien(a)tamere.eu> >>>>> An: "Torsten Bergmann" <astares(a)gmx.de>, "Any question about pharo is >>>>> welcome" <pharo-users(a)lists.pharo.org>, "StÃ©phane Ducasse" < >>>>> stephane.ducasse(a)inria.fr>, "Marcus Denker" <marcus.denker(a)inria.fr>, >>>>> sean(a)clipperadams.com >>>>> Betreff: Re: Multi desktops inside Pharo! >>>>> >>>>> >>>>> >>>>> On 24/08/15 19:32, Torsten Bergmann wrote: >>>>> >>>>>> Julien Delplanque wrote: >>>>>> >>>>>>> I created a small utility that make possible to have multi desktops: >>>>>>> https://github.com/juliendelplanque/desktopsmanager. >>>>>>> >>>>>> Your code works for me in Pharo 5, havent tried in Pharo 4. >>>>>> >>>>>> Unfortunately it does only work for Pharo "windows" but not general >>>>>> morphs. >>>>>> If you evaluate >>>>>> >>>>>> ElipseMorph new openInWorld >>>>>> >>>>>> and hit CTRL+SHIFT+J you will see that the morph stays on the desktop. >>>>>> So your goodie is a "window switcher" and not a "desktop switcher". >>>>>> >>>>> Yes you are right. But it is a first step, I planned to really create >>>>> "new desktops" in the future, but for now I wrote this fast to have >>>>> something usable. >>>>> >>>>>> I guess it would be better if you would really switch the WorldMorph >>>>>> instance >>>>>> referenced by the global "World" variable. >>>>>> >>>>>> There already was a solutions once discussed/contributed with code >>>>>> here >>>>>> >>>>>> >>>>>> http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html >>>>>> http://seandenigris.com/blog/?p=767 >>>>>> >>>>>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it) >>>>>> can help here, >>>>>> update the code and merge with yours. >>>>>> >>>>> Yes I'm OK to do that. Where can I find this package? >>>>> >>>>>> Ideally such a "Switch desktop" possibility would be part of the >>>>>> standard Pharo 5 image including a small preview of the whole desktop >>>>>> similar to what usual operating system window manager do and the >>>>>> possibility >>>>>> to provide different backgrounds to the desktops. >>>>>> >>>>> It would be really nice to have multiple world by default in pharo >>>>> images :) >>>>> >>>>>> Thanks >>>>>> Torsten >>>>>> >>>>> Julien >>>>> >>>>> >>>>> >>> > > >

Aug. 25, 2015

Re: [Pharo-users] http://pharo.org/documentation --> List of dialog windows in Pharo 4.0?

by H. Hirzel

And this http://stackoverflow.com/questions/32198721/how-do-i-call-a-yes-no-cancel-d… one. On 8/25/15, H. Hirzel <hannes.hirzel(a)gmail.com> wrote: > Thank you Stephan, in the meantime I did as well a question on the > file dialog on > > http://stackoverflow.com/questions/32198476/how-do-i-ask-the-user-for-a-fil… > > Would you mind putting the answer there as well because of ease of > reference for other people? > > --Hannes > > On 8/25/15, Stephan Eggermont <stephan(a)stack.nl> wrote: >> On 25-08-15 09:09, H. Hirzel wrote: >>> Hello >>> >>> I am looking for a list of ready made dialog windows in Pharo 4.0 and >>> the main API to use them. >>> >>> - FileDialog, >> >> MindmapNode class>>open >> |fileName| >> fileName := UITheme current chooseFileIn: World title: 'Choose file' >> extensions: nil path: nil preview:nil. >> fileName ifNotNil: [(FLMaterializer materializationFromFileNamed: >> fileName) >> root openInWorld attachAllSubnodes detachAllSubnodes ] >> >> MindmapNode>>saveMap >> |fileName| >> fileName := UITheme current fileSaveIn: World title: 'Choose file' >> extensions: nil path: nil. >> fileName ifNotNil: [ FLSerializer serialize: self toFileNamed: >> fileName]. >> >> Stephan >> >> >> >

Aug. 25, 2015

Re: [Pharo-users] http://pharo.org/documentation --> List of dialog windows in Pharo 4.0?

by H. Hirzel

Thank you Stephan, in the meantime I did as well a question on the file dialog on http://stackoverflow.com/questions/32198476/how-do-i-ask-the-user-for-a-fil… Would you mind putting the answer there as well because of ease of reference for other people? --Hannes On 8/25/15, Stephan Eggermont <stephan(a)stack.nl> wrote: > On 25-08-15 09:09, H. Hirzel wrote: >> Hello >> >> I am looking for a list of ready made dialog windows in Pharo 4.0 and >> the main API to use them. >> >> - FileDialog, > > MindmapNode class>>open > |fileName| > fileName := UITheme current chooseFileIn: World title: 'Choose file' > extensions: nil path: nil preview:nil. > fileName ifNotNil: [(FLMaterializer materializationFromFileNamed: > fileName) > root openInWorld attachAllSubnodes detachAllSubnodes ] > > MindmapNode>>saveMap > |fileName| > fileName := UITheme current fileSaveIn: World title: 'Choose file' > extensions: nil path: nil. > fileName ifNotNil: [ FLSerializer serialize: self toFileNamed: fileName]. > > Stephan > > >

Aug. 25, 2015

Re: [Pharo-users] http://pharo.org/documentation --> List of dialog windows in Pharo 4.0?

by Stephan Eggermont

On 25-08-15 09:09, H. Hirzel wrote: > Hello > > I am looking for a list of ready made dialog windows in Pharo 4.0 and > the main API to use them. > > - FileDialog, MindmapNode class>>open |fileName| fileName := UITheme current chooseFileIn: World title: 'Choose file' extensions: nil path: nil preview:nil. fileName ifNotNil: [(FLMaterializer materializationFromFileNamed: fileName) root openInWorld attachAllSubnodes detachAllSubnodes ] MindmapNode>>saveMap |fileName| fileName := UITheme current fileSaveIn: World title: 'Choose file' extensions: nil path: nil. fileName ifNotNil: [ FLSerializer serialize: self toFileNamed: fileName]. Stephan

Aug. 25, 2015

http://pharo.org/documentation --> List of dialog windows in Pharo 4.0?

by H. Hirzel

Hello I am looking for a list of ready made dialog windows in Pharo 4.0 and the main API to use them. - FileDialog, - Alert dialog (OK) - Yes / No / Cancel dialog - Dialog with info text and selection list. - Wizards Searching for dialog window alert file on http://files.pharo.org/doc/4.0 did not give any result. Could you help please? Thank you in advance Hannes

Aug. 25, 2015

Re: [Pharo-users] SIXX in Pharo 4.0?

by H. Hirzel

Thanks for the help so far; Updated https://github.com/mumez/SIXX/issues/2 123 test cases pass. Suggestions how to deal with the four test cases which fail? --Hannes On 8/24/15, Ben Coman <btc(a)openinworld.com> wrote: > On Mon, Aug 24, 2015 at 2:46 PM, H. Hirzel <hannes.hirzel(a)gmail.com> wrote: >> Hello >> >> I experience a load problem of SIXX * in Pharo 4.0. >> >> https://github.com/mumez/SIXX/issues/2 >> >> The complaint is that a class >> >> ContextPart >> >> is not found. Any suggestions/hints how to proceed? > > ContextPart and MethodContext classes have been merged into Contex class > https://github.com/pharo-project/pharo-changelogs/blob/master/Pharo40Change… > > cheers -ben > >

Aug. 24, 2015