Beginners June 2007

beginners@lists.squeakfoundation.org

51 participants
36 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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One click setup for 3.9 [win]
by Xinyu Liu 25 Jan '08

25 Jan '08

Hi people, I create a one click setup for newbies. It will do the following things after run: 1. download SqueakVM from ftp.squeak.org 2. download 3.9 images, soruces ftp.squeak.org 3. extract all things 4. create shortcut in desktop and program menu. I found the download process may cost some time, because there is only one download session. The installer can work only in Windows. It can be get from: http://liuxinyu95.googlepages.com/squeak3.9_win_installer.exe I created it with NullSoft installation system scripts. I shared the script code here: http://liuxinyu95.googlepages.com/squeak3.9_win_install.nsi You can change it when 3.9 package updates. Have fun with 3.9! Best regards. Yours, Liu

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Added Instance Variables and Methods are not shown in System Browser
by Warakorn Paphrawat 18 Nov '07

18 Nov '07

I developed a little Meta-Programming application, which adds methods to the MethodDictionary of a class and adds instance variables + getters/setters. However, after running this application the changes are not reflected in the System Browser. All new instance variables and new methods are not shown there. On the other side I can run a little test application, which creates a new instance of class (to which I added some methods and variables), which in turn uses some of the added methods and instance variables through getters/setters without any errors. Is there any trick to make these added methods and instance variables visible ? Again, the new methods are correctly integrated into the MethodDictionary with selectors and CompiledMethods according to "aClass inspect". Is there another way to check whether the new methods and new instance are really integrated into a new class? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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SampleCode-ImageViewer
by Wade Scholine 03 Jul '07

03 Jul '07

This is a question about the sample that was posted here last October, at http://lists.squeakfoundation.org/pipermail/beginners/2006-October/001238.h… I am not able to make it work. I was able to file in the code and start an instance from a workspace with 'SampleImageViewerMorph new.' I click on the 'dir' button in the upper left hand corner of the resulting Image Viewer Morph window, and that summons a directory browser UI that I can navigate to a directory that has jpgs in it. (e.g., "C:\Documents and Settings\wades\My Documents\My Pictures\rocks5"). When I hit the 'accept' button in the directory browser, it goes away and the path to the directory I picked goes into the location bar or whatever you'd call it in the Image Viewer Morph window. A balloon comes up, saying 'When I'm populated, you can click on a file to load it.' Nothing happens. If I try hitting the little '>' button by the location bar on the Image View Morph window, I get an "error out of bounds." If I debug that, I see that the error happens in SampleImageLoader>>loadImage: it appears that the SampleImageLoader's collection members are empty. I tried making an instance of SampleImageLoader from the workspace, thinking I could manually initialize it and load the image list. a _ SampleImageLoader new. a inspect. (open a transcript) a loadImagesBelow: 'c:\stuff\rpics' The transcript shows "Entering DosFileDirectory on 'c:\stuff\rpics'" and then nothing else happens. Should any of this work? I am using: Squeak3.9 latest update: #7067 Current Change Set: Unnamed1 OK On WinXP SP2.

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How do you find which code runs when you click on something?
by Ian Oversby 28 Jun '07

28 Jun '07

Hi, I'm trying to find out which code is run when I click on something in Squeak. I've tried selecting the menu from the middle button and then selecting debug -> explore morph. Is this the best way? Does it work for all morphs? How can I add new menu items which run arbitrary code? Thanks, Ian

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[FEEDBACK] Important UTF8 and others Windows ENH by Andreas
by Edgar J. De Cleene 27 Jun '07

27 Jun '07

Folks: I attach my still not in the updates stream how to have Andreas Raab proposal (see http://lists.squeakfoundation.org/pipermail/squeak-dev/2007-June/117511.html ) I have a Windows PC now for testing purposes, the .cs activates the release team how to manage things via Monticello. All seems correct, but I don't was a Windows guy. So I beg all test this, as team requires test before we put any in the updates. Any problems, etc, I was in IRC And Andreas, thanks for your work and remember now you must put SmalltalkImage current platformName and not Smalltalk platformName. Original .cs blows the Mac image ! Edgar

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How do you find which code runs when you click on something?
by Jerome Peace 27 Jun '07

27 Jun '07

*** Hi Ian, This is an excellent question cause it shows up the current obscurity of the answer. The secret you need to know its that the object that dispatches the mouse events looks high and low for someone to handle it. When an unspecial morph is clicked on the fellow who handles it is the paste up morph that holds the morph. The pasteup morph usually lifts the morph and puts it in the hand, which then moves it and eventually drops it somewhere. So check out PasteUpMorph>>mouseDown: etc. The second useful secret to know is that you can make a morph special by going to its menu and giving it a mouseUp action. Then the morph is highlighted when the mouse is over it and pressing the mouse will prime and the action which will happen if the mouse is released while you are still in the object. Or... The third useful secret is you can make a morph special by giving on: #mouseDown send: #selector to: anObject with: argument works also for #mouseUp and mouseMove and a bunch of other things. The special morph now has an EventHandler which gets first crack at events before the PasteUpMorph of the first secret. look at the implementers and senders of #on:send: ... Or... The last not so useful secret is you could try to write handlers to make your morph special. This is not so useful because it takes full understanding of a lot of subtleties. And if you can actually understand what you are doing you will probably get distracted in fixing the bugs you will run across. For this look at morphs that have their own handlers and imitate. You are usually best off working with secret three. Yours in curiosity and service, --Jerome Peace > > > > > [Newbies] How do you find which code runs when you > click on something? > > > Matthew Fulmer tapplek at gmail.com > Wed Jun 27 00:26:41 UTC 2007 > > > On Tue, Jun 26, 2007 at 09:47:29PM +0100, Ian Oversby > wrote: > >Hi, > > > >I'm trying to find out which code is run when I click > on something > >in Squeak. I've tried selecting the menu from the > middle button > >and then selecting debug ->explore morph. Is this > the best > >way? Does it work for all morphs? How can I add new > menu > >items which run arbitrary code? > > I tried exploring the morph, and also browsing the class > protocol (select the object in the inspector/explorer, > and press > cmd-p). I limited the inheritance chain to StringMorph, > and > examined the "event handlers" method category. I looked > at the > mouseUp handler (mouse up is the usual place where > actions are > invoked), and the last line looked promising: "self > invokeWithEvent: t1". I highlighted that and pressed > cmd-m to > jump to that method. The last few lines looked like the > real > work. So I put a "self halt." right above the Cursor > normal > showWhile: [...] block and saved (cmd-s). Now, whenever > I hit a > menu item, I get a debugger ready to execute the menu > command. > > Whenever you are done, hit any menu item, remove the > "self > halt." in the debugger window, save, and proceed. > > Hope that helps. > > -- > Matthew Fulmer -- http://mtfulmer.wordpress.com/ > Help improve Squeak Documentation: > http://wiki.squeak.org/squeak/808 > *** ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

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Best practice for very simple objects
by Norbert Hartl 26 Jun '07

26 Jun '07

Hi, I'm thinking right now about some role and permission stuff for my webapp. But I'm asking myself what will be a good approach for this. At first I created a lot of classes like AdminRole, MemberRole, CreatePermission, ModifyPermission etc. I used the class objects for this. These only carry some state like index, label. The role objects also carry a set of permissions. But at the moment I doubt this is a good approach. I'll end up with a lot of classes that have only two mehods. And second (I dislike most) is to use class side initialization for populating the objects at first. The good thing about it is that I'm able to use something like anAction requires: Modifypermission and aUser hasPrivilege: AdminRole What would be a usual approach to solve something like this?? thanks in advance, Norbert

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How you could get your public IP from Squeak
by Edgar J. De Cleene 25 Jun '07

25 Jun '07

My router is NOGA KN-S1060 | stream wanIp | stream := HTTPSocket httpGet: 'http://192.168.1.1/sys_status.htm' args: nil user: 'admin' passwd: 'admin'. stream upToAll: 'wanIP'. wanIp := stream upTo: $;. ^ wanIp := (wanIp findTokens: '"') at: 2 And I have a Mac , a Windows PC and a Linux box on my small LAN Perhaps this could be useful to some Edgar

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Re: [Newbies] SampleCode-ImageViewer
by Wade Scholine 25 Jun '07

25 Jun '07

> > > ------------------------------ > > Message: 7 > Date: Sat, 23 Jun 2007 15:19:43 -0300 > From: Edgar J De Cleene <edgardec2005(a)gmail.com> > Subject: Re: [Newbies] SampleCode-ImageViewer > To: "A friendly place to get answers to even the most basic questions > about Squeak." <beginners(a)lists.squeakfoundation.org> > Message-ID: <149A61FD-CC76-40EF-8934-F16149CEDC28(a)gmail.com> > Content-Type: text/plain; charset="us-ascii" > > > On 23/06/2007, at 13:51, Wade Scholine wrote: > > > This is a question about the sample that was posted here last > > October, at > > > > http://lists.squeakfoundation.org/pipermail/beginners/2006- > > October/001238.html > > > > I am not able to make it work. I was able to file in the code and > > start an instance from a workspace with 'SampleImageViewerMorph > > new.' I click on the 'dir' button in the upper left hand corner of > > the resulting Image Viewer Morph window, and that summons a > > directory browser UI that I can navigate to a directory that has > > jpgs in it. ( e.g., "C:\Documents and Settings\wades\My Documents > > \My Pictures\rocks5"). When I hit the 'accept' button in the > > directory browser, it goes away and the path to the directory I > > picked goes into the location bar or whatever you'd call it in the > > Image Viewer Morph window. A balloon comes up, saying 'When I'm > > populated, you can click on a file to load it.' Nothing happens. > > > > If I try hitting the little '>' button by the location bar on the > > Image View Morph window, I get an "error out of bounds." If I debug > > that, I see that the error happens in SampleImageLoader>>loadImage: > > it appears that the SampleImageLoader's collection members are empty. > > > > I tried making an instance of SampleImageLoader from the workspace, > > thinking I could manually initialize it and load the image list. > > > > a _ SampleImageLoader new. > > a inspect. > > (open a transcript) > > a loadImagesBelow: 'c:\stuff\rpics' > > The transcript shows "Entering DosFileDirectory on 'c:\stuff > > \rpics'" and then nothing else happens. > > > > Should any of this work? > > > > I am using: > > > > Squeak3.9 > > latest update: #7067 > > Current Change Set: Unnamed1 > > OK > > > > > > On WinXP SP2. > > _______________________________________________ > > Beginners mailing list > > Beginners(a)lists.squeakfoundation.org > > http://lists.squeakfoundation.org/mailman/listinfo/beginners > > I file the code and could see is working. > > SampleImageViewerMorph new on a Workspace > Or select the class in the Sustem Browser and alt - click for "more" > and then "sample instace" > > Could be enhanced to read all the picts formats and not only jpg. > > Hints: > Go to Utilities >> graphicsFileSuffixes. > Investigate "senders" > Have fun ! I got SampleImageLoader's loadImagesBelow working: the problem was that it was trying to match files ending with .jpg or .jpeg, but my files had .JPG. I still am having problems with the package though. It appears that the SampleImageLoader is not getting hooked up with the Model correctly. Are you using 3.9?

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Beginners June 2007