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basic_action_system.md: note about reusable logic

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Yann Cébron 2025-03-05 11:22:15 +01:00
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topics/basics/basic_action_system.md
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@ -141,6 +141,12 @@ An example of enabling a menu action based on whether a project is open is demon
When the user selects an enabled action, be it from a menu or toolbar, the action's `AnAction.actionPerformed()` method is called.
This method contains the code executed to perform the action, and it is here that the real work gets done.
> Reusable logic must *not* be exposed in the `AnAction` implementation via `static` methods (Java) or `companion object` (Kotlin).
>
> Instead, introduce dedicated methods in utility classes or [](plugin_services.md).
>
{title="Reusable Logic" style="warning"}
By using the `AnActionEvent` methods and `CommonDataKeys`, objects such as the `Project`, `Editor`, `PsiFile`, and other information is available.
For example, the `actionPerformed()` method can modify, remove, or add PSI elements to a file open in the editor.