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how to read GEF source code ? [message #166783]

Thu, 03 February 2005 02:21

Eclipse User

Originally posted by: jianminjin.msn.com

i think this is a question most newbies would like to know, it's very
frustrated that if u still have no idea how it works after having read
the source for days. there are docs tell u how many methods a class has,
and what they look like ,but u don't know what's the realation between
them, what happened behind the UI operation? for example, when u
drag the handle of a graph to change it's positon, viewer may hand it to
the controller by sending a request,then the controller convert it to
serveral command to manipualtor the data model? by this way , we can
support
redo/undo feature. but i don't understand how exactly it works, i only get
a very obscure conception about this, so i still haven't the ability to
realize by myself cause i don't know it in detail. i have many questions
like
this , would anyone who know this framework well be kindly to tell me how
to read the source code , how to master the GEF framework?

I'm hoping for an answer and any help would be greatly appreciated

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Re: how to read GEF source code ? (Introductory GEF info) [message #166824 is a reply to message #166783]

Thu, 03 February 2005 15:24

Beth Tibbitts

Messages: 231
Registered: July 2009

Senior Member

I would highly recommend, in this order more or less:

0. Brush up on your understanding of MVC (Model-View-Controller)
although the following articles cover this as well.

1. Short article on Draw2D so you get an idea of the drawing mechanism
behind GEF: http://eclipse.org/articles/Article-GEF-Draw2d/GEF-Draw2d.ht ml
(I found that understanding this helped when reading subsequent articles)

2. "A Shape Diagram Editor" in Eclipse.org articles:
http://eclipse.org/articles/Article-GEF-diagram-editor/shape .html
(This is the newest article, and the example code probably does
the best abstraction of the GEF basics and model classes for a
simple GEF exemplary project.)

3. GEF overview on the GEF Wiki:
http://eclipsewiki.editme.com/GefDescription
(Also a good sample project, with less abstraction, so a tiny
bit harded to extend, but still excellent, and predates the above.)

4. GEF Tutorial on Developerworks by GEF author Randy Hudson:
http://www-106.ibm.com/developerworks/opensource/library/os- gef/

5. EMF-GEF Redbook - in-depth discussion (skip the EMF part if you want
to concentrate on GEF):
http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstract s/sg246302.html?Open

6. Other articles on Eclipse.org
http://www.eclipse.org/gef/reference/articles.html?cvsroot=T ools_Project

....Beth Tibbitts

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Re: how to read GEF source code ? (Introductory GEF info) [message #166970 is a reply to message #166824]

Fri, 04 February 2005 01:17

Eclipse User

Originally posted by: jianminjin.msn.com

thanks for ur patience to give me the helpful information. it helps me a
lot, thanks again :)

Beth Tibbitts wrote:

> I would highly recommend, in this order more or less:

> 0. Brush up on your understanding of MVC (Model-View-Controller)
> although the following articles cover this as well.

> 1. Short article on Draw2D so you get an idea of the drawing mechanism
> behind GEF: http://eclipse.org/articles/Article-GEF-Draw2d/GEF-Draw2d.ht ml
> (I found that understanding this helped when reading subsequent articles)

> 2. "A Shape Diagram Editor" in Eclipse.org articles:
> http://eclipse.org/articles/Article-GEF-diagram-editor/shape .html
> (This is the newest article, and the example code probably does
> the best abstraction of the GEF basics and model classes for a
> simple GEF exemplary project.)

> 3. GEF overview on the GEF Wiki:
> http://eclipsewiki.editme.com/GefDescription
> (Also a good sample project, with less abstraction, so a tiny
> bit harded to extend, but still excellent, and predates the above.)

> 4. GEF Tutorial on Developerworks by GEF author Randy Hudson:
> http://www-106.ibm.com/developerworks/opensource/library/os- gef/

> 5. EMF-GEF Redbook - in-depth discussion (skip the EMF part if you want
> to concentrate on GEF):
>
http://publib-b.boulder.ibm.com/Redbooks.nsf/RedbookAbstract s/sg246302.html?Open

> 6. Other articles on Eclipse.org
> http://www.eclipse.org/gef/reference/articles.html?cvsroot=T ools_Project

> ....Beth Tibbitts

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