[Uim] Focus and cursor position shift handlings (bug #7729)

[YAMAMOTO Kengo / YamaKen]

Hi Jae-hyeon,

At 26 Oct 2006 15:05:25 +0900,
jhpark at tuhep.phys.tohoku.ac.jp wrote:
> 
> YAMAMOTO Kengo / YamaKen <yamaken at bp.iij4u.or.jp> writes:
> 
> > At 16 Oct 2006 15:08:53 +0900,
> > jhpark at tuhep.phys.tohoku.ac.jp wrote:
> > > 
> > > (1) Can displace and place handlers be combined?  It seems that
> > >     displace handler is called only after another textarea is clicked
> > >     and this is the main difference from focus-out.  I came to think
> > >     of this when I was wondering whether or not we need to distinguish
> > >     focus-out and displace, and similarly focus-in and place.
> > 
> > Cannot. Although some call patterns that can be combined as I
> > wrote as above exist, following situations need the separated
> > handlers in addition to the focus handlers, or else multiplexed
> > and parameterized handlers. Since such parameterized handlers
> > are complex and not beneficial for everyone, I chose the 4
> > separated handlers way.
> 
> Now, I think I understand the difference between displace and place.
> A displace handler is called before the toolkit moves the (visible)
> preedit area, and a place handler is called after the preedit area has
> been moved to a new location.  Is this correct?

Yes.

> > >     Some applications, for example firefox, seem to fetch the content
> > >     of the preedit when a button is clicked, even if an IM does not
> > >     commit the string.  For example, if you write a word in the search
> > >     form at www.google.com, leaving it in the preedit state, and click
> > >     on the "Google Search" button, the string is entered.

> > Thanks for the information. I didn't realized about the
> > issue. Do you know whether the behavior is Firefox-specific or
> > GTK+-generic?
> 
> I think it is firefox-specific.  If you do the above example with
> gedit now, you actually lose the last character in preedit.

I see. Thanks.

> > One possible problem is that Firefox fetches the "[kana]"
> > indicator of the above example together with the search
> > string. But since such input methods will not be appeared for
> > now, it is not an emerging problem.
> 
> This should be solved once the focus-out hander call is correctly
> implemented.  It will clear the preedit before firefox fetches its
> content.

------------------------------------------------
YAMAMOTO Kengo / YamaKen  yamaken at bp.iij4u.or.jp
FAMILY   Given / Nick