🤖 Add hook_canvas_content_operation() so modules can add operations to Canvas content

Fons Vandammerequested to merge
issue/canvas-3592132:3592132-allow-modules-to-add-operations-to-the-canvas-content-list into 1.x

Closes #3592132 (closed)

Adds hook_canvas_content_operation(), the Canvas counterpart of hook_entity_operation(). Modules return operations (title, url, optional weight).

  • ApiContentControllers::getEntityOperations() adds the operations the current user can access to the content links.
  • The content API exposes their labels in an optional linkLabels object, in weight order. Responses without module operations are unchanged.
  • The pages panel and the page navigation menu render them as links, between Canvas's own operations and "Delete page".

A new hook is used instead of hook_entity_operation(), so Canvas controls which operations appear in its UI.

Use case: canvas_translate #3623308 adds a "Translate" operation.

Testing

  • ApiContentControllersListTest::testModuleProvidedOperations() passes.
  • ui/src/utils/contentOperations.test.ts passes.
  • Enable a module implementing the hook (see canvas.api.php). The operations appear in the pages panel and in the page navigation menu, in weight order, before "Delete page".
  • An operation whose URL the user cannot access is not shown.
  • Without such a module, both menus are unchanged.

AI-discloure: Partially (Claude Code wrote the code and tests; reviewed and tested manually by the author.)

Closes #3592132 (closed)

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