[Help Needed] Implement provider for sticky scrolling in JAVA/JDT

[Christopher-Hermann]

What it does

The current sticky scrolling functionality is based solely on indentation. This can cause issues when the source code is formatted in unexpected ways. To address this, an extension point for providing language-specific sticky lines has been introduced in the following pull request: eclipse-platform/eclipse.platform.ui#2398.

This change represents the first proof-of-concept implementation for sticky lines in Java/JDT. As I lack experience in JDT development, the proposed approach for calculating sticky lines in Java may not be optimal.
I would greatly appreciate assistance from the community in identifying a more effective method for calculating sticky lines.

Fixes:
eclipse-platform/eclipse.platform.ui#1950
eclipse-platform/eclipse.platform.ui#2128
eclipse-platform/eclipse.platform.ui#2338

How to test

1. Check out the PR from [StickyScrolling] Add extension point for sticky lines provider eclipse-platform/eclipse.platform.ui#2398. and open plugin org.eclipse.ui.editors
2. Enable the Sticky Scrolling Feature via Preferences > General > Editors > Text Editors > Enable Sticky Scrolling
3. Open the class EnumMap, scroll to line 775 (method writeObject)

With proper Sticky Lines calculation:

With the Default Sticky Lines calculation based on indentation:

[BeckerWdf]

Is JDT interested in such a feature?
@jukzi: Could you ask one of the JDT committers to have a look at this?

[jukzi]

what kind of help do you need? build currently fails because it can not find the internal(!) API
org.eclipse.ui.internal.texteditor.stickyscroll.IStickyLine
referenced as
org.eclipse.ui.texteditor.stickyscroll.IStickyLine

[BeckerWdf]

@Christopher-Hermann asks for this:

This change represents the first proof-of-concept implementation for sticky lines in Java/JDT. As I lack experience in JDT development, the proposed approach for calculating sticky lines in Java may not be optimal.
I would greatly appreciate assistance from the community in identifying a more effective method for calculating sticky lines.

Could you or some of your JDT co-committers help him?

[jukzi]

Could you or some of your JDT co-committers help him?

I lack the skill for that. Maybe @jjohnstn could help?

[mickaelistria]

Please add copyright header.