332172 - Support nested event structures

Status: RESOLVED FIXED

(Toolkit Graveyard :: Data Collection/Metrics, defect)

Description

[Brian Ryner (not reading)]

Currently, the metrics service only supports a flat event structure.  For the profile event outlined on http://wiki.mozilla.org/Browser_Metrics:Data_Collectors , we need to make it support nested data structures.

Comment 1

[Brian Ryner (not reading)]

Attachment: patch

I might have gone a little overboard with the accessors for the child item list, but I figured we should make this as easy as possible for API consumers to use.

Comment 2

[Brian Ryner (not reading)]

Just for completeness, we talked offline about whether it would make sense to just expose the DOMElement for event items rather than having a separate interface that mirrors much of that functionality.  Doing it that way, though, would expose the metrics document via the element's ownerDocument, and I don't think we want that to be accessible through this API.  (hack-arounds with a separate document and cloning the tree are possible, but not so great)

So we're going to stick with this approach for now.

Comment 3

[Brian Ryner (not reading)]

checked in.