[Tcl-bugs] [ tktoolkit-Bugs-1936220 ] tk_getOpenFile -multiple 1 fails on Linux

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Bugs item #1936220, was opened at 2008-04-06 20:58
Message generated for change (Settings changed) made by patthoyts
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Category: 37. [tk_get*File]
Group: current: 8.5.2
Status: Open
Resolution: None
>Priority: 8
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Jeffrey Hobbs (hobbs)
Summary: tk_getOpenFile -multiple 1 fails on Linux

Initial Comment:
Using version 8.5.2, built from sources, with --enable-64-bit. OpenSuse version 10.3

tk_getOpenFile -multiple 1 
does not work. After selecting a few files (whose names correctly appear in File names listbox), pressing Open button results in failure message (which appears to arise from lines 1663/1664 of tkfbox.tcl.


No problems with this on Windows, using ActibeState binary.

Ian Gay
ga...@sf...

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Comment By: Donal K. Fellows (dkf)
Date: 2008-05-01 10:00

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It's meaningful on both Win and OSX. Win supports forcing the showing of
hidden files on 2K/XP (and probably Vista too; the page I was reading
predates that) via the OFN_FORCESHOWHIDDEN flag. At least one of the OSX
APIs for file selection supports filtering, but the docs are complex enough
that I can't tell for sure if that is something we can take advantage of.

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Comment By: Jeffrey Hobbs (hobbs)
Date: 2008-05-01 01:06

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Ah yes, I snuck that switch in because I felt it was necessary, but not
part of the standard API fit.  A small TIP could address that I guess, but
[-hidden bool] really only means something on unix-based systems.

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Comment By: Ian Gay (iangay)
Date: 2008-05-01 00:56

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While looking at the source code, in connection with the above bug, I
found a wonderful feature! There is code in place to allow
exclusion/inclusion of unix hidden files in the search. Unfortunately,
there is no mechanism for script authors to access this code. I think it
would be a great idea to activate this code by provision of a suitable
argument to the tk_get... procedures.

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Comment By: Ian Gay (iangay)
Date: 2008-04-09 21:17

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The immediate cause of the problem is the command
IconList_Selection $w clear 0 end
in 
::tk::IconList_FocusOut (in tkfbox.tcl)

With the ttk widgets, a canvas FocusOut event is generated when you press
the Open button (This behaviour is pointed out in http://wiki.tcl.tk/20050
The suggestion there, to insert
bind TButton <ButtonPress-1> {%W state pressed}
at an appropriate place appears to work. (I inserted it at the top of
::tk::dialog::file::)

This may not be a good idea - changing class behaviour globally seems
yucky. Adding -takefocus 0 to the button definition in
::tk::dialog::file::Create
also works, and seems better to me.

This dialog needs to be reviewed by someone who knows the details of tk
and tk better than I do. There are a few other problems ... e.g. the Alt_O
binding doesn't work.

Ian

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Comment By: Nobody/Anonymous (nobody)
Date: 2008-04-07 19:11

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Testing old versions shows that this bug first appeared in 8.5b3 (the
first ttk version).

Diagnostic printing shows that in
proc ::tk::dialog::file::ActivateEnt
the assignment
set selIcos [::tk::IconList_CurSelection $data(icons)]
always produces an empty list after a multiple selection. I don't yet
understand why this is.

Ian Gay
ga...@sf...


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