Page Manager and Panels settings — where do they live?

Question

I'm continuing my quest to make every piece of common site architecture into something that can be displayed in a View. Right now I'm on Panels panes and Page Manager pages.

I have a site that is most assuredly making use of Panels panes and Page Manager pages on the node display, node edit form, and a few other places. However, when I inspect page_manager_pages, or any other table in the DB that begins with page_manager_ or panels_, the table appears to be completely empty. (I'm using PHPMyAdmin, and it gives me that red cursor with an 'x' in it.)

I haven't been able to find an API call that lists all Panels panes, Page Manager pages, or other relevant data either. And when I have looked through the sites I own to see ones that do have something in the page_manager_pages or panel_panes tables, it seems to be much less than I would expect. (E.g. a large site that is heavily themed with Page Manager and Panels shows up in the db with just two entries in the page_manager_pages table.)

I've even combed through the SQL queries that Drupal does when I click "enable" on a disabled Page Manager page (e.g. the node edit form, the node display), but haven't found anything that looks meaningful.

Answer 1

This ended up requiring API calls, since Panels and Page Manager definitions can live in code or in the database.

First I got the tasks with page_manager_get_tasks().

This gave me a list of tasks, which appear to be high-level Page Manager stuff. My Workbench, Node add/edit form, Node template, User template, User edit form, and Custom Page were the tasks.

Custom Page had subtasks that included all my custom pages, so I did page_manager_get_task_subtasks() on each tasks that had subtasks, and then page_manager_load_task_handlers() on each subtask. Within the handlers, there is information about the Panels and other objects that go on that page.