[Usability] Find bar variants

[Christian Persch <chpe gnome org>]

Hi,

there are now at least 3 GNOME applications which employ a firefox-style
find bar. However, every one is doing is differently, as demonstrated in
this screenshot [http://www.gnome.org/~chpe/find-bars.png]:

- Evince:
  * Close button at the start
  * Prev, Next buttons
  * Case sensitivity checkbox
  * Status text
  * Spans whole width of window

- Epiphany (in the Find extension in Epiphany Extensions):
  * No close button
  * Prev, Next buttons
  * Case sensitivity checkbox
  * No status text
  * Spans whole width of window

- Yelp (in 2.9.x):
  * Close button at the end
  * Next, Prev buttons (but using arrows instead of stock images)
  * No case sensitivity checkbox
  * No status text
  * Only spans the document's width; starts after the sidebar

Epiphany uses Evince's EggFindBar widget with modifications; Yelp has
its own implementation.

IMHO, all find bars in GNOME should look and behave the same way.

So:
- Should they have a Close button ?
- Should they span the whole width of the window, or exclude sidebar
areas?
- Next, Prev of Prev, Next button order?
- Is case sensitivity common enough to warrant a checkbox in the find
bar?
- Should Enter activate Next, or some other action (for example,
activate the link if the text searched for occurs in a web page link)?

What do you think?

Regards,
	Christian