deploying Squeak applications

How are Squeak applications typically deployed to users? Is there a way to create an image that runs a given method when double-clicked? Is there a way to reduce an image to contain only the classes used from a given starting class?

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Hi Mark,

On 8/13/07, Mark Volkmann <[hidden email]> wrote:
> How are Squeak applications typically deployed to users?

I'd package the image and changes file, maybe along with the VM, and ship those.

> Is there a way to
> create an image that runs a given method when double-clicked?

You can add a class to the startup list:
SystemDictionary>>#addToStartUpList: will do that. The class is
required to understand the #startUp: message, which will be sent to it
when the image is loaded and started. #startUp: accepts a Boolean
telling it whether the image is resuming (newly started).

> Is there a way
> to reduce an image to contain only the classes used from a given starting
> class?

That one, I cannot answer.

Best,

Michael
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To see a good practice (best) for deployment, look at Sophie, which
borrows its deployment strategy from Plopp. I particularly like the
Linux deployment, which includes the VMs for on Windows and Mac OS X
as well.

This topic is addressed as a FAQ on the wiki (just updated with my
comments before replying to this email):
http://wiki.squeak.org/squeak/3563

I usually get my application running, then Save and Close Squeak. The
distribute the image (and changes, if I'm giving to another
developer).

Reducing (a.k.a., shrinking) the image is generally considered a black
art. Best practice today is writing your app with Monticello. Then get
a pre-shrunk Squeak and add reload your app. Here is a good place for
pre-shrunk Squeaks:

http://www.comtalk.net/Squeak/98

To see the future, take a look at Spoon. Probably not ready for the
beginners list, though:
http://netjam.org/spoon

On 8/13/07, Michael Haupt <[hidden email]> wrote: _______________________________________________
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> Tell me more about the changes file. When I do a save it seems to update
> both my image file and my changes file. If all my changes are saved in the
> changes file, why is the image file modified?

Changes is a database of code used by the image.
http://wiki.squeak.org/squeak/49

Image contains the objects. That's all the running bytecode (including
your program), all of the data (including pointers to the changes and
sources files):

Smalltalk can live without the database of source code, but it cannot
live without the virtual image (or virtual machine).
http://wiki.squeak.org/squeak/2213
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I think most people just save the image before distribution. Since the
image is the application in its running state, that works. I think of
the above as being more for scripting.
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Hi

> How are Squeak applications typically deployed to users?

http://squeak.preeminent.org/tut2007/html/206.html

and further pages. Look for that special mac section.

> Is there a way to create an image that runs a given method when  
> double-clicked? Is there a way to reduce an image to contain only  
> the classes used from a given starting class?

As Michael said check SystemDictionary>>#addToStartUpList:



You could start with one of the smaller images and fill in all the  
needed. But why? A typical bigger image has a size of 25 MB.
In these times, this isnt much.

On the other hand there is kernelimage

http://www.comtalk.net/Squeak/98

Hope that helps
Enno
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On Mon August 13 2007 5:27 am, Mark Volkmann wrote:
> How are Squeak applications typically deployed to users? Is there a
> way to create an image that runs a given method when double-clicked?
> Is there a way to reduce an image to contain only the classes used
> from a given starting class?

Hi Mark,

Also see Ned's lockdown:

http://wiki.squeak.org/squeak/518
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