%# BEGIN BPS TAGGED BLOCK {{{
%# 
%# COPYRIGHT:
%#  
%# This software is Copyright (c) 1996-2006 Best Practical Solutions, LLC 
%#                                          <jesse@bestpractical.com>
%# 
%# (Except where explicitly superseded by other copyright notices)
%# 
%# 
%# LICENSE:
%# 
%# This work is made available to you under the terms of Version 2 of
%# the GNU General Public License. A copy of that license should have
%# been provided with this software, but in any event can be snarfed
%# from www.gnu.org.
%# 
%# This work is distributed in the hope that it will be useful, but
%# WITHOUT ANY WARRANTY; without even the implied warranty of
%# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
%# General Public License for more details.
%# 
%# You should have received a copy of the GNU General Public License
%# along with this program; if not, write to the Free Software
%# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
%# 
%# 
%# CONTRIBUTION SUBMISSION POLICY:
%# 
%# (The following paragraph is not intended to limit the rights granted
%# to you to modify and distribute this software under the terms of
%# the GNU General Public License and is only of importance to you if
%# you choose to contribute your changes and enhancements to the
%# community by submitting them to Best Practical Solutions, LLC.)
%# 
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%# Request Tracker, to Best Practical Solutions, LLC, you confirm that
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%# END BPS TAGGED BLOCK }}}
<%once>
my %cache;
</%once>
<%init>
$Page = $m->callers(1)->path unless ($Page);

my $CacheKey = "Callback--$Page--$_CallbackName";
my $callbacks = $cache{$CacheKey} || $m->notes($CacheKey);

if (!$callbacks) {
    my $path  = "/Callbacks/*$Page/$_CallbackName";

    # Due to API changes after Mason 1.28, we have to check for which
    # version we're running when getting the component roots
    my @roots = map { $_->[1] }
                    $HTML::Mason::VERSION <= 1.28
                        ? $m->interp->resolver->comp_root_array
                        : $m->interp->comp_root_array;
    
    my %seen;
    
    for my $root (@roots) {
        push @$callbacks,
            # Skip backup files, files without a leading package name,
            # and files we've already seen
            grep {     !/\/\.|~$/
                   and $_ ne "/Callbacks/$Page/$_CallbackName"
                   and not $seen{$_}++ }
                 $m->interp->resolver->glob_path($path, $root);
    }
    
    $m->notes($CacheKey => $callbacks);
    $cache{$CacheKey} = $callbacks if !$RT::DevelMode;
}

my @rv;
foreach my $comp (sort @$callbacks) {
    push @rv, $m->comp($comp, %ARGS);
}
return @rv;
</%init>
<%args>
$_CallbackName => 'Default'
$Page => undef
</%args>
