102065 - RFE - about:components

Status: RESOLVED WONTFIX

(Core :: XPCOM, defect)

Description

[Doug Turner (:dougt)]

Implement about:components. 

Using nsIClassInfo, we can get a lot of useful information from the registered
components.  I hacked out a protocol handler which:

1. enumerates the registered classID's
2. finds the classID's factory
3. QI's to nsIClassInfo
4. If sucessful, spits out all of the info

Comment 1

[Doug Turner (:dougt)]

Attachment: Partial output of about:components

Comment 2

[Doug Turner (:dougt)]

Attachment: about:components v.1

Comment 3

[Darin Fisher]

this seems really cool to me :)

Comment 4

[Darin Fisher]

so, i applied this patch and gave it a try...

1) doesn't build on linux properly.. you need to add nsAboutComponents.cpp to
Makefile.in

2) performance really really sucks.. entering about:components hogged 100% for
several minutes before rendering (tested under linux).

Comment 5

[Darin Fisher]

i also noticed that the patch uses tabs instead of spaces for indentation... you
should probably convert it over to not use tabs.

Comment 6

[Darin Fisher]

i wonder... is the component manager threadsafe?  could all of the enumeration
work be pushed into a nsIStreamIO::inputStream?  then all of the work would
happen on one of the file transport threads :)

Comment 7

[John Bandhauer]

Futured because this is code bloat without an obvious need?
If about: handlers can be just registered components then this could just be 
implemented as an optional JS component.

Comment 8

[Jo Hermans]

*** Bug 119795 has been marked as a duplicate of this bug. ***

Comment 9

[Gábor Stefanik]

Setting helpwanted, bug seems to be abandoned.

Comment 10

[Gábor Stefanik]

Why?