Eclipse 4diac Weekly #68

Update on what development happened across the Eclipse 4diac project in the week from December 26, 2026 to January 09, 2026.

This two-week focuses on keeping the Eclipse 4diac IDE aligned with the latest Eclipse platform while further polishing graphical editing, connection handling, and build quality. Alongside the upgrade to a new target platform, several usability issues were fixed and internal tooling was cleaned up.

Enhancements and Fixes in 4diac IDE

• Platform & build infrastructure

  • Upgraded to the Eclipse 2026-03 target platform, simplifying builds by removing obsolete dependency checks.
  • Fixed missing plugin.properties entry in build properties of the model UI plugin.
  • Added additional Maven configuration for Sonar analysis.
  • Resolved most Sonar-reported issues in the application plugin and UI tests.

• Graphical editing & positioning

  • Fixed pixel scaling issues and stabilized SetPositionCommand tests.
  • Corrected automatic FB insertion behavior for empty subapps.
  • Improved undo behavior when creating connections via connection markers.

• Connections & markers

  • Reworked utility markers and stylers, improving structure and reuse of existing marker infrastructure.
  • Switched utility markers to the Eclipse marker infrastructure.
  • Added a base handler and source marker handler for graphical markers.
  • Ensured connection endpoint markers are removed after successful connection creation.
  • Allowed marked connection creation in both directions.
  • Refined modifier-key handling so event creation mode only activates when Ctrl is pressed alone.

• Type system & model fixes

  • Fixed handling of VAR_IN_OUT pins in plug type interfaces (#1997).
  • Added member access pins to the InitialValueHelper.

• Internal cleanups

  • Extracted handler service access into a helper.
  • Removed unused methods and performed general code cleanup.

Many thanks to all contributors for their work and their feedback!

Cheers,
The Eclipse 4diac Team