Hi Anthony,
I guess there is no documentation (refcard or the like)
since the icon may change and are specific to the OB Browser.
You can even have your own.
Since Smalltalk is very, very dynamic it is often the case that
it is much easier to look at the system itself than to ask for
up to date documentation.
For the icons you should search for the implementors of the method
#browserIcon. You can do this using "Tools" -> "MethodFinder".
In my image I have
- Collection and subclasses (three objects)
- Exception and subclasses (a flash)
- Magnitude and subclasses (a sum sign)
- Morph and subclasses (a morph)
- OBAnnouncement and subclasses (a bubble)
- String and subclasses (a paragraph sign)
- TestCase and subclasses (dynamic icon, depend on the sucess of running the test green, yellow or red)
The implementation in TraitDescription and ClassDescription
who return a blank icon just assure that there is no icon displayed
for traits and classes by default.
If you want to know about the inner workings of this mechanism:
The #browserIcon returns a symbol that is a method selector on
class OBMorphicIcon returning the icon using a form instance.
Just have a look at class OBMorphicIcon.
To implement an own icon on your class:
- create an icon (typical 12x12) in your paint program
and save it as PNG or GIF
- use the following snippet to generate code from the image:
| image stream |
image := ColorForm fromFileNamed: '/path/to/icon.gif'.
stream := WriteStream with: String new.
image storeOn: stream.
stream contents inspect.
- create an "icon" method by pasting this code in a custom
extension method on OBMorphicIcon (put it in a method category
with * and the name of your Monticello package).
For instance the "OB-SUnitIntegration" package does just this
by providing the test case icons in a method category
"*ob-sunitintegration" on class OBMorphicIcon.
If this is still magic for you, you should learn about Monticello
source code packaging using "pharobyexample.org"
- implement #browserIcon on you custom class to return
the selector of your "icon method"
If in doubt, just ask.
Bye
Torsten
http://astares.blogspot.com
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