The styles that are defined in this block

The absolute on disk filename for this style block (or null if not on disk)

The line in the file containing this style block

The filename of the file containing this style block (or null if none)

A list of appropriate selectors for this block (ie ".button")

A list of selectors for this block

Get the list of raw style values

Update a raw style value

Test whether target passes our selector tests. We use forceFlag to do alternate tests for flags like ::before and ::after. It's basically added to the target's pseudo class list for the test.

Tests a few broadphase conditions to build a list of feasible styleblocks tailored for a panel.