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MyASPN >> Mail Archive >> perl-tk
perl-tk
Unitialized errors in FileSelect.pm
by Amit Didwania other posts by this author
Jul 20 2007 1:51AM messages near this date
RE: State in Button Widget | GetOpenFile problem
SOURCE Hello All,

TK Version  : 804.027 
Platform : 5.8 Generic_117350-46 sun4u sparc SUNW,Sun-Fire-V440
Perl Version : 5.8.7

I get a unitialized error in FileSelect.pm in Accept_dir method. It
happens if you use this package to open a File browser, and randomly
click in the dir select widget. Reason is a double click without any
selection cause the $new argument to be uninitalized in Accept_dir
method as given below. I did a slight modification, which work for me.
Does any body else knows ay other solution for this issue?


########################################################################
########
#######################    ACCEPT_DIR
#  
sub Accept_dir
{

 my ($cw,$new) = @_;
 my $dir  = $cw-> cget('-directory');
 if(defined $new) {
	 $cw-> configure(-directory => "$dir/$new");
 } else {
	 $cw-> configure(-directory => "$dir");
 }
} # end sub ACCEPT_DIR

Similary for File selection. Glob_to_re method should be modified as
follows
sub glob_to_re
{
 my $regex = shift;
 $regex =~ s/(\\?)(.)/&translate($1,$2)/ge;
#Old code doesn't check if $_ is defined. 
#return sub { shift =~ /^${regex}$/ }; 
 	 return sub { 
            my $str = shift;
            if(!defined($str)) {
                return 0;
            } 
            if($str =~ /^$regex$/) {
                return 1;
            } else {
                return 0;
            }
        }

}

Sample test code to reproduce the problem, is attached.

Thanks and Regards
Amit
Thread:
Steve Waltner
Jack D
Steve Waltner
Amit Didwania
Slaven Rezic
Amit Didwania
Amit Didwania

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