Crumbs integration: Inherit context from parent page. [#1063734]

Have a look at
http://drupal.org/project/crumbs
#1045524: Deep theme switching with Crumbs + Themekey
#1060646: Integration with Crumbs for sections inheritance

Crumbs is a module that gives every page a trail of paths (and a breadcrumb).
In combination with context, this would allow a kind of inheritance of the context to sub-pages.

Context is a bit different, because one page can have more than one context (afaik), and the conditions are more flexible.

I wonder what would be the best idea to integrate that.
- Iterate the trail paths in reverse order, until you can either match or discard a given context.
- Or: have a separate plugin for crumbs. This could be based on path patterns or something else.

Comments

Comment #1

donquixote commented 17 February 2011 at 02:27

Difficulty:
Plugins that support this need to be able to match a path, without looking at page-specific global state.
For instance, if the plugin looks at menu_get_item() or menu_get_object() or $_GET['q'], then we cannot ask this plugin about the parent page.
This is not about global state in general - the global $user information is usually totally fine. But, any global state that differs from one path to another is problematic.

Solution:
Plugins can declare that they are independent of page-related global state, and only these plugins will be considered for evaluation of the parent path.