Configurable Interactive Graph Editor

[onierstrasz]

Graphs in GT can only be built programmatically, either using Mondrian or directly in Bloc. An interactive editor would be useful not only for creating diagrams such as Mindmaps, but also other kinds of graphs, such as UML diagrams, roadmaps for Lepiter databases, and executable diagrams such as finite state automata, Petri nets, and attributed graph grammars. The idea is to have a generic graph editor that can be easily configured with to style the nodes and edges and their behavior. Styles could be specified in a Grammar of Graphics fashion.

A prototype of such an editor was previously built as party of the IMAD project, and could be reimplemented as a starting point.

Possible steps:

• Implement a bare-bones editor (with just a basic style) based on the IMAD prototype
• Extend the basic style to support creation of simple mindmaps
• Add storeString support
• Allow nodes to link to existing entities (classes, Lepiter pages, examples etc)
• Implement use cases (UML diagrams, Lepiter roadmaps)
• Define a specification format for styles so diagrams can be exported as JSON

[onierstrasz]

TG suggests to build on the existing GtScenery prototype.

[asampal]

It might be worth taking a look at Obsidian's Canvas for some inspiration - it's quite nice.

https://obsidian.md/canvas