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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. 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. 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. 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. For example, the `actionPerformed()` method can modify, remove, or add PSI elements to a file open in the editor.