Extension talk:TreeNav.php

If a wiki uses a tree in the sidebar and this extension is installed, it will automatically place some extra navigation features in the page if it's a title that exists in the sidebar tree.

Obtaining the tree content

The first issue that comes to mind is, how do we know if the current page is within the sidebar tree and where in the tree? The content of all the rendered trees is available in the $wgTreeAndMenu->args array, but the problem is that the sidebar tree is rendered after the page has been generated because it's built directly from within the skin itself. So this can be fixed either by pre-rendering the tree, or by rendering it a second time internally within the TreeNav extension. I'll use the latter method for now even though it's less efficient. It only needs to perform a pre-parse on the sidebar article not a full render so it's not too bad. And in fact only the content inside the #tree parser-function need to be pre-parsed.