Squeak-dev March 2002

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169 participants
610 discussions

[Q][Morphic][presentation] Selecting several morphs for dragging
by Hannes Hirzel 04 Mar '02

04 Mar '02

Hi When using Squeak for doing a presentation (each projects corresponds to one slide, InternalThreadNavigationMorph for navigation) the need often arises when doing authoring to select several morphs at once to drag them to another place. - Selecting with the mouse does not work (TheWorldMenu pops up) - Shift-Click does not work - ALT-Shift-Click doesn not work Is there a way I do not know yet to do this or is it just not implemented? Regards Hannes Hirzel

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[Morphic][Presentation] Two tips
by Hannes Hirzel 04 Mar '02

04 Mar '02

Two tips for using Morphic 1) When using Morphic as a presentation system (each project is one "slide") it pays off rather quickly to do create your own flaps. Check X parts bin X pop out on mouse over X shared by all projects 2) To do a button which jumps to another project - bring up TheWorldMenu. - choose 'jump to project...' - put the mouse over the project you want to jump to (no click) - ALT-click (Windows, Unix), Cmd-click (Mac) two times --> the first click brings up the halos of TheWorldMorph --> the second click brings up the halos of a MenuItemMorph which jumps to the project you want to. - drag out on the yellow handle a copy of the MenuItemMorph - voila - you have your 'jump-to-button', move it to a convenient place. - you may as well put a copy of it into one of your parts bin flaps to avoid this procedure in the future. A good candidate is a 'home' button. I think this technique helps considerably to do presentations which have enough links. Make sure to choose good names for your projects ('slides'). You'll find your things more easily when you have to answer questions after your presentation. Hannes Hirzel

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[ENH][VM] Unix Browser Plugin (SF)
by Bert Freudenberg 04 Mar '02

04 Mar '02

Hi folks, I finally brought NPSqueak up to date and commited everything to SourceForge. The plugin itself is in platforms/unix/misc/npsqueak, and you need to recompile the VM, too. Good news: It works in Galeon (based on Mozilla 0.9.8) but the credit actually goes to the Mozilla folks (I knew my code was okay ;-)) Bad news: You have to click "Proceed" once because the SecurityPlugin is not yet implemented. If you proceed, THERE ARE NO SECURITY CHECKS. So be careful. I'll update my download page soon ... -- Bert

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Re: [Q][Morphic][presentation] Selecting several morphs for dragging
by Hannes Hirzel 04 Mar '02

04 Mar '02

On Mon, 4 Mar 2002, Ned Konz wrote: > On Monday 04 March 2002 05:30 am, Hannes Hirzel wrote: > > Hi > > > > When using Squeak for doing a presentation (each projects corresponds to > > one slide, InternalThreadNavigationMorph for navigation) the need often > > arises when doing authoring to select several morphs at once to drag > > them to another place. > > > > - Selecting with the mouse does not work (TheWorldMenu pops up) > > - Shift-Click does not work > > - ALT-Shift-Click doesn not work > > > > Is there a way I do not know yet to do this or is it just not implemented? > > Shift-drag on the desktop. This builds a SelectionMorph; you can then add > individual items using a special halo handle. > I was not aware how I do enlarge a selection after I made it. Yes, there is a full blue handle which - when clicked - gives an additional selection tool with which I can select additional morphs. That's handy in cases where the yellow halo of the SelectionMorph will not do the job. Hannes Hizrel

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Re: InternetConfiguration
by Lex Spoon 04 Mar '02

04 Mar '02

Michael Rueger <m.rueger(a)acm.org> wrote: > > Hi all, > > is anybody working on implementing the InternetConfiguration primitives > on Unix? Most of this stuff isn't available Unix. Thus, people will have to set up a Squeak config file or something. Not fun. By the way, if you pull this info from the central registry on MS Windows, you will frequently get bogus information, because many programs seem to use their own settings in favor of the communal settings. This is not just arrogance -- it's entirely possible that an app will want more detailed information than is in the central registry. Thus on MS Windows, too, you may end up having a Squeak-specific list of settings somewhere. Let's step back a moment. This list of info is a really simplified view of a person's Internet existence. I use two different IRC servers, and 2 POP servers. I have 2 email addresses that I use with much frequency. I prefer to connect to USENET by running a command, but if that's not available I need to use a custom port, not just a certain host. Thus, while I don't think I'm that unusual of a user, my true Internet settings don't fit into these blanks. And thus, any IRC, USENET, email, or whatever else program in *Squeak* is likely to need more information than this, just like with the MS Windows programs I mentioned above. But that's okay. OO design, like a lot of things, is largely about being naive in a carefully considered way. :) Still, we need to know what the purpose is to do this right. And anyway, to return to the beginning, much of this info just isn't there. For anyone curious, a quick attempt to list the things that are at least sometimes available gives: real name (from /etc/passwd) NNTP server (from $NNTPSERVER, or from /etc/nntpserver) email address (sometimes! from $EMAIL) SMTP host (localhost!) finger (uh, localhost again! maybe.) WWW hame page (in theory, there's an environment variable. in practic, probably most people don't set it.) IRC server (from the environment. again, though, probably uncommon.) Maybe these settings should be left in-image? Heck, you may even want different settings for different images.... -Lex PS -- That's kinda funny that your VM knows what archie server you prefer, but that it doesn't know your name. :) >getArchiePreferred USA, InterNIC:archie.internic.net: >getRealName PersonalName

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Re: [Q][Morphic][presentation] Selecting several morphs for dragging
by Bob Arning 04 Mar '02

04 Mar '02

On Mon, 4 Mar 2002 14:30:53 +0100 (MET) Hannes Hirzel <hirzel(a)spw.unizh.ch> wrote: >When using Squeak for doing a presentation (each projects corresponds to >one slide, InternalThreadNavigationMorph for navigation) the need often >arises when doing authoring to select several morphs at once to drag >them to another place. > >- Selecting with the mouse does not work (TheWorldMenu pops up) >- Shift-Click does not work >- ALT-Shift-Click doesn not work > >Is there a way I do not know yet to do this or is it just not implemented? The only action currently implemented (AFAIK) is to shift-drag on the desktop to enclose the desired morphs in a selection morph and then move that. Shift-clicking individual morphs to add them to the selection does not work. Cheers, Bob

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Re: Generalized Object Modules Design
by Bob Arning 04 Mar '02

04 Mar '02

On Mon, 4 Mar 2002 14:23:29 +0100 (MET) Hannes Hirzel <hirzel(a)spw.unizh.ch> wrote: >I consider it a good idea to display the name of the project/changeSet >somewhere _within_ the project. This will enhance the awareness in which >context one is working and motivate to change projects if necessary. The easy way to do that is to have a ChangeSorter open and pointing to the current cs. Cheers, Bob

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Generalized Object Modules Design
by Anthony Hannan 04 Mar '02

04 Mar '02

Below is a module design that varies slightly from the current one but allows storage of arbitrary objects and has a different dependency structure. Database transactions are also introduced; they are orthogonal to modules but are used to load and save modules. Modules are organized in a multiple inheritance hierarchy. Each module provides a name space that contains the names of its local root objects plus the root names of all inherited modules. Names are searched in topological sort order, ambiguous names raise an error (This search is only required during compiling or module loading). Every object belongs to one and only one module. When saved to disk, an object pointer that crosses a module boundary is converted to a disk pointer containing a relative path name, and the referenced object becomes a root of its module if it is not already. The relative path to an inherited object is equal to its root name (disambiguated if necessary) allowing overriding. The relative path to an object not inherited is equal to its top-down module path from the closest common parent. Methods are compiled with respect to their owning module (remember every object belongs to a single module). Selectors and globals are looked up in the modules name space. Ambiguities are presented to the user allowing him to choose a specific inheritance path to disambiguate. Selectors, like globals, are root objects of modules. Instead of storing selectors in a global symbol table, they are stored in modules. The same selector name in two different modules will be treated as different selectors, compiling will bind the method header and message sends to one or the other. When a disk pointer is traversed its referenced module is automatically loaded. All disk pointers in the image that reference that module will be converted to regular pointers pointing to their object at the end of their relative paths. New objects are added to the current working module (like current Project today) and recorded in the current database transaction. Changes to existing objects are also recorded in the current database transaction. The current working module may change while maintaining the same current transaction. Upon commit all changes recorded in the current transaction are saved to the active database. The transaction also records which modules were loaded and when, so the database will be able to tell if the commit is safe (ie. no one else has changed the modules read in the mean time). We could also allow multiple pending transactions and nested transactions. The database contains all Squeak modules. The database can be replicated for load balancing, and forked to allow different variants (like 'stable' versus 'alpha' versus 'personal'). Transactions are not forgotten when commited, they are kept around as database layers. A layer can be copied and applied to another database if it does not introduce inconsistencies. A layer can be broken apart or merged into another layer. A layer would be equivalent to today's changesets. What do you all think? Cheers, Anthony

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InternetConfiguration
by Michael Rueger 04 Mar '02

04 Mar '02

Hi all, is anybody working on implementing the InternetConfiguration primitives on Unix? There is the interesting question of where to get these values from as they would be configured in one or more browsers but not stored in a central repository like the registry on Windoze or the InternetConfig panel on the Mac. Below is a simple script to list all entries and some of the results (I didn't fill in all fields) I got back on the Mac. Michael ------------------ listAll "InternetConfiguration listAll" #(getArchiePreferred getDownloadPath getEmail getFTPHost getFTPProxyAccount getFTPProxyHost getFTPProxyPassword getFTPProxyUser getFingerHost getGopherHost getGopherProxy getHTTPProxyHost getIRCHost getLDAPSearchbase getLDAPServer getMailAccount getMailPassword getNNTPHost getNTPHost getNewsAuthPassword getNewsAuthUsername getNoProxyDomains getOrganization getPhHost getRealName getSMTPHost getSocksHost getTelnetHost getWAISGateway getWWWHomePage getWhoisHost) do: [:each | Transcript show: each; tab; show: (self perform: each asSymbol); cr] getArchiePreferred USA, InterNIC:archie.internic.net: getDownloadPath Macintosh HD:Desktop Folder: getEmail email(a)add.ress getFTPHost getFTPProxyAccount getFTPProxyHost ftpProxy:4 getFTPProxyPassword getFTPProxyUser getFingerHost getGopherHost getGopherProxy GopherProxy:3 getHTTPProxyHost WebProxy:2 getIRCHost getLDAPSearchbase getLDAPServer ldap.four11.com getMailAccount EMailUserId@EmailInServer getMailPassword EmailPasswd getNNTPHost NEWServer getNTPHost getNewsAuthPassword getNewsAuthUsername getNoProxyDomains BypassProxy.Host getOrganization PersonalOrg getPhHost getRealName PersonalName getSMTPHost EmailSMTPServer getSocksHost SocksFireWall:1 getTelnetHost getWAISGateway getWWWHomePage getWhoisHost

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Re: squeak printing?
by Bert Freudenberg 04 Mar '02

04 Mar '02

How about using CUPS, the Common Unix Printing System, which was just licensed by Apple (http://www.cups.org/) The CUPS API is LGPL so would work fine with Squeak. Alternatively it might be possible to write a CUPS client in Squeak as the protocol is HTTP based. Does anyone have experience with CUPS? -- Bert

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