Forum OpenACS Development: Flow chart generation with drag and drop functionality
- Create a flow chart that shows the relationship between various user defined elements that will already be modeled in the OACS database.
- Click on the element or relationship to edit its properties.
- Drag and drop and element to change its place in the tree.
You could use flash or java to make something better suited, but that's a lot of hazzle. Most ideal would be a desktop application. But that does not fit in well with the webbased application idea.
The direction I'm now thinking in is the use of 'starkits' - gives you the benefit of both worlds:
a) not being hindered by the inherent limitations of webpages (it's just a normal windows/x-windows application)
b) almost as easy to use as a regular webpage (for the user)
The idea then is:
- the user has downloaded a suitable TclKit for his platform (1mb download, just once)
- and when he clicks on the link to e.g. edit the gantchart, he gets downloaded a suitable starkit (instead of an HTML page). The kit is probably around the same size as a page with images. After editing (no roundtrips to the server!) the kit uploads the edited chart back to the server and terminates.
I haven't done anything in this direction yet, but I thought it may be worthwhile sharing the thought.
If you mount the latest copy of GForge (www.gforge.org), you can see it in action, creating Gannt Charts on the fly (http://gforge.org/pm/task.php?group_id=5&group_project_id=2&func=ganttpage).
As for Caroline's requirement, have you tried checking out Dia? (http://www.gnome.org/projects/dia/)
Are there any advantage of starkit or Dia vesus graphviz/grappa?
Does anyone know if graphviz/grappa are under active development?
If you have any notes or additions to make to that page, let me know.
Its often thought of as Java-centric, but its supposed to be language-neutral, and they have several projects to enable it to support other languages (http://www.eclipse.org/tools/index.html) using its plug-in architecture. They also just came out with a UML toolkit that you might be able to leverage (http://www.eclipse.org/uml2/)