# Gtk::FileFilter.add\_custom **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [August 24, 2011, 12:45am UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031 "2011-08-24T00:45:39Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [August 24, 2011, 12:45am UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/1 "2011-08-24T00:45:39Z")
If I read the doc write this should work… ```auto filefilter1 = Gtk::FileFilter.new filefilter1.add_custom(Gtk::FileFilter::FILENAME) do |c,filename,u,d,m| File.directory? f end filechooserwidget1.add_filter filefilter1 ``` and it’s good until it gets into the main loop where it segfaults. filefilter.add\_pattern(’\*.rb’) for example, works just fine. Am I missing something obvious or worse yet, something not obvious? ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 2:19pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/2 "2011-08-24T14:19:27Z")
Can you paste a sample script here which segfaults? For others who read this here, here is the link to the API docu: [http://ruby-gnome2.sourceforge.jp/hiki.cgi?Gtk%3A%3AFileFilter#add\_custom](http://ruby-gnome2.sourceforge.jp/hiki.cgi?Gtk%3A%3AFileFilter#add_custom) I copy paste quickly: add\_custom(needed){|contains, filename, uri, display\_name, mime\_type| …} Adds rule to a filter that allows files based on a custom callback block. The bitfield needed which is passed in provides information about what sorts of information that the filter block needs; this allows GTK+ to avoid retrieving expensive information when it isn’t needed by the filter. Since 2.4 ``` needed: bitfield of flags indicating the information that the ``` custom filter block needs. (GtkFileFilterFlags). {|contains, filename, uri, display\_name, mime\_type| …}: callback block; if the block returns true, then the file will be displayed. contains: Flags indicating which of the following fields need are filled filename: the filename of the file being tested uri: the URI for the file being tested display\_name: the string that will be used to display the file in the file chooser mime\_type: the mime type of the file Returns: self needed ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 2:28pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/3 "2011-08-24T14:28:43Z")
Btw: filefilter1.add\_custom(Gtk::FileFilter::FILENAME) do |c,filename,u,d,m| File.directory? f end Where does f come from? I think you must check that all the variables you pass in the block are valid. You probably meant filename, not f. When you rename block variables, make sure the variables inside the block also refer to the same name. ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 3:14pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/4 "2011-08-24T15:14:11Z")
hey folks, interesting, i also get a seg fault… do you _need_ to use #add\_custom ? i’ve used #add\_pattern with success, but it doesn’t take a block, so it might not fit your needs… ``` audioFilter = Gtk::FileFilter.new audioFilter.add_pattern("*.mp3") dialog.add_filter(audioFilter) # dialog is a Gtk::FileChooserDialog ``` - j ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 2:30pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/5 "2011-08-24T14:30:32Z")
Oh, odd. I also get a segfault … per.rb:68: [BUG] Segmentation fault ruby 1.8.7 (2011-02-18 patchlevel 334) [x86\_64-linux] Aborted Perhaps add\_custom is buggy? Hmmm. ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 3:42pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/6 "2011-08-24T15:42:46Z")
Marc H. wrote in post #1018229: > Btw: > > filefilter1.add\_custom(Gtk::FileFilter::FILENAME) do |c,filename,u,d,m| > File.directory? f > end > > Where does f come from? > > I think you must check that all the variables you pass in the block are > valid. You probably meant filename, not f. When you rename block > variables, make sure the variables inside the block also refer to the > same name. You caught the transcription failure. Sorry. The code I’m using is correct. ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 3:56pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/7 "2011-08-24T15:56:15Z")
jake kaiden wrote in post #1018242: > hey folks, > > interesting, i also get a seg fault… do you _need_ to use > #add\_custom ? i’ve used #add\_pattern with success, but it doesn’t take > a block, so it might not fit your needs… > > ``` > audioFilter = Gtk::FileFilter.new > audioFilter.add_pattern("*.mp3") > > dialog.add_filter(audioFilter) > > # dialog is a Gtk::FileChooserDialog > > ``` > > - j Unfortunately, I’m really interested in selecting directories to be added to a list for subsequent scanning. Since the directories involved are arbitrarily named, patterns just don’t work as a selection filter. I’m certain there are other ways to do this so I can create a work-around but I appreciate the time you all have taken to confirm that there is indeed a bug. For the record… Linux 2.6.32-33-generic #72-Ubuntu SMP Fri Jul 29 21:07:13 UTC 2011 x86\_64 GNU/Linux ruby 1.9.2p290 (2011-07-09 revision 32553) [x86\_64-linux] Ruby-GNOME-1.0.0 Again, thanks for confirming. djief ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 7:23pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/8 "2011-08-24T19:23:03Z")
jake kaiden wrote in post #1018268: … > if so, i do something like this in my audio player… > > ``` > # (`dialog` is a FileChooserDialog...) > > selection = dialog.filename > > if File.directory?(selection) > Gtk::FileChooser::ACTION_SELECT_FOLDER > ## do directory stuff ## > else > Gtk::FileChooser::ACTION_OPEN > ## do file stuff ## > end > > ``` > > …if not, don’t know what to tell ya! good luck… > > - j Thanks for the suggestion… Looks like it might work for me… I’ll have to knock off a prototype. djief ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 24, 2011, 5:17pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/9 "2011-08-24T17:17:38Z")
Jeff M. wrote in post #1018255: > Unfortunately, I’m really interested in selecting directories to be > added to a list for subsequent scanning. Since the directories involved > are arbitrarily named, patterns just don’t work as a selection filter. judging from your first post… > filefilter1 = Gtk::FileFilter.new > filefilter1.add\_custom(Gtk::FileFilter::FILENAME) do |c,filename,u,d,m| > File.directory? f …it looks like you’re trying to determine whether a selection made from a file chooser widget is a file or a directory… is this the case? if so, i do something like this in my audio player… ``` # (`dialog` is a FileChooserDialog...) selection = dialog.filename if File.directory?(selection) Gtk::FileChooser::ACTION_SELECT_FOLDER ## do directory stuff ## else Gtk::FileChooser::ACTION_OPEN ## do file stuff ## end ``` …if not, don’t know what to tell ya! good luck… - j ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 26, 2011, 4:41pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/10 "2011-08-26T16:41:59Z")
Thanks Kouhei S.! ---
**Author:** ![sithadmin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@sithadmin](https://www.ruby-forum.com/u/sithadmin)\ **Post date:** [August 25, 2011, 2:56pm UTC](https://www.ruby-forum.com/t/gtk-filefilter-add-custom/211031/11 "2011-08-25T14:56:45Z")
Hi, In [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) “[ruby-gnome2-devel-en] Gtk::FileFilter.add\_custom” on Wed, 24 Aug 2011 00:45:39 +0200, Jeff M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > and it’s good until it gets into the main loop where it segfaults. > > filefilter.add\_pattern(‘\*.rb’) for example, works just fine. I’ve fixed it in trunk. Thanks for your report. ## Thanks, kou