Add RemoveEventTrigger method to EventHelper

[k073l]

Adds a matching Remove method to already existing AddEventHelper.

This is useful in cross-backend setting, where direct removal via RemoveListener(listener, trigger.triggers[0].callback) is not possible, as Il2Cpp has issues resolving UnityEngine.EventSystems.EventTrigger.get_triggers()'.

Release Notes

• Added RemoveEventTrigger method to EventHelper class to enable programmatic removal of event triggers
• The method mirrors the existing AddEventTrigger functionality and addresses cross-backend scenarios where direct access to EventTrigger.triggers via Il2Cpp is unreliable
• Supports removal of event triggers by event type with proper validation and cleanup of both Unity listener callbacks and corresponding EventTrigger entries

Changes by Author

Author	Lines Added	Lines Removed
k073l	23	0

[coderabbitai]

📝 Walkthrough

Walkthrough

A new public method RemoveEventTrigger has been added to the EventHelper class to enable removal of event triggers. The method validates inputs, locates matching event trigger entries, and removes both the registered callback and the corresponding entry from the trigger collection.

Changes

Cohort / File(s)	Summary
Event Helper Enhancement S1API/Internal/Abstraction/EventHelper.cs	Added using System.Linq; and introduced public method RemoveEventTrigger for unregistering event callbacks. Method validates parameters, searches for matching EventTrigger.Entry by type, removes the listener callback, and deletes the entry from the trigger collection.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A trigger once bound, now set free,
With a hop and a skip, we delete with glee,
Event listeners vanish without a trace,
The Helper cleans up with LINQ's embrace!
✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding a RemoveEventTrigger method to EventHelper, matching the PR's primary objective.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 70.00%.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@S1API/Internal/Abstraction/EventHelper.cs`:
- Around line 115-122: The removal currently finds an Entry by eventID only
(FirstOrDefault(e => e.eventID == eventType)) which can pick the wrong Entry
when multiple listeners share the same eventType; update Remove logic in
EventHelper.cs to identify the exact Entry added for that listener by either (A)
matching both eventID and the callback delegate (verify entry.callback's
invocation list contains the wrapped delegate corresponding to the listener) or
(B, preferred) modify AddEventTrigger to store the created Entry reference keyed
by the original listener (e.g., a Dictionary<listener, Entry>) and then in the
removal use that stored Entry to call RemoveListener(entry.callback) and remove
that exact Entry from trigger.triggers; use symbols AddEventTrigger,
RemoveListener, Entry, trigger.triggers, eventID, entry.callback, and listener
to locate and implement the change.
- Around line 116-118: The preprocessor check around the _items access currently
uses only IL2CPPMELON; change the directive in EventHelper.cs (the block that
manipulates trigger.triggers via _items) from "#if IL2CPPMELON" to "#if
(IL2CPPMELON || IL2CPPBEPINEX)" (and keep the matching `#endif`) so IL2CPPBEPINEX
receives the same IL2CPP-specific accessor workaround as other blocks in the
file.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 352402fd-5d6e-4f77-9a4e-006b1d3ccc68

📥 Commits

Reviewing files that changed from the base of the PR and between d40d543 and 49e5088.

📒 Files selected for processing (1)

• S1API/Internal/Abstraction/EventHelper.cs