package WxPerl::MenuMap;
$VERSION = eval{require version}?version::qv($_):$_ for(0.10.1);
use warnings;
use strict;
use Carp;
=head1 NAME
WxPerl::MenuMap - An object to introspect a Wx::Menu
=head1 ABOUT
This package creates an object with read-only accessors for mapping the
menu's items to IDs.
It is still highly experimental.
=head1 SYNOPSIS
use WxPerl::MenuMap;
...
my $menu = WxPerl::MenuMap->new($menu_object);
EVT_MENU($self, $menu->file_open, sub {$_[0]->blah($_[1])});
=cut
=head2 new
my $menu = WxPerl::MenuMap->new($menu_object);
=cut
sub new {
my $class = shift;
my $menu = shift(@_) or croak('requires menu argument');
(@_ % 2) and croak('odd number of elements in argument hash');
my (%args) = @_;
ref($class) and croak("not an object method");
# create the class
my $newclass = "$menu";
$newclass =~ s/.*=SCALAR\(([^\)]*)\)/${class}::$1/ or
croak("cannot transform $menu into a package");
my $newclass_isa = do { no strict 'refs'; \@{"${newclass}::ISA"}; };
push(@$newclass_isa, $class); # You're one of us now...
my $self = {menu => $menu};
bless($self, $newclass);
$self->_init;
return($self);
} # end subroutine new definition
########################################################################
=head2 _init
$self->_init;
=cut
sub _init {
my $self = shift;
my $menu = $self->{menu};
my $package = ref($self);
my %map = _map_menubar($menu);
$self->{_map} = \%map;
foreach my $entry (keys(%map)) {
#warn "hookup $entry";
my $number = $map{$entry};
no strict 'refs';
*{$package . '::' . $entry} = eval("sub {$number}");
}
} # end subroutine _init definition
########################################################################
=head2 _map_menubar
my %map = _map_menubar($menu);
=cut
sub _map_menubar {
my ($menubar) = @_;
my %map;
for(my $i = 0; $i < $menubar->GetMenuCount; $i++) {
my $menu = $menubar->GetMenu($i);
my $label = _prep($menubar->GetLabelTop($i));
#warn "got $label -> $menu";
my %subm = _map_menu($menu);
foreach my $key (keys(%subm)) {
my $path = $label . '_' . $key;
$map{$path} = $subm{$key};
#warn "now $path";
}
}
return(%map);
} # end subroutine _map_menubar definition
########################################################################
=head2 _map_menu
my %map = _map_menu($menu);
=cut
sub _map_menu {
my ($menu) = @_;
my %map;
foreach my $item ($menu->GetMenuItems) {
next if($item->IsSeparator);
my $label = _prep($item->GetLabel);
#warn "item: $item ($label)";
$map{$label} = $item->GetId;
my $submenu = $item->GetSubMenu or next;
my %submap = _map_menu($submenu);
foreach my $key (keys(%submap)) {
my $path = $label . '_' . $key;
$map{$path} = $submap{$key};
}
}
return(%map);
} # end subroutine _map_menu definition
########################################################################
=head2 _prep
my $label = _prep($menulabel);
=cut
sub _prep {
my ($label) = @_;
$label = lc($label);
$label =~ s/[^\w]/_/g;
$label =~ s/^(\d)/_$1/;
return($label);
} # end subroutine _prep definition
########################################################################
=head2 items
my @list = $menu->items;
=cut
sub items {
my $self = shift;
return(keys(%{$self->{_map}}));
} # end subroutine items definition
########################################################################
=head1 AUTHOR
Eric Wilhelm <ewilhelm at cpan dot org>
http://scratchcomputing.com/
=head1 BUGS
If you found this module on CPAN, please report any bugs or feature
requests through the web interface at L<http://rt.cpan.org>. I will be
notified, and then you'll automatically be notified of progress on your
bug as I make changes.
If you pulled this development version from my /svn/, please contact me
directly.
=head1 COPYRIGHT
Copyright (C) 2006 Eric L. Wilhelm, All Rights Reserved.
=head1 NO WARRANTY
Absolutely, positively NO WARRANTY, neither express or implied, is
offered with this software. You use this software at your own risk. In
case of loss, no person or entity owes you anything whatsoever. You
have been warned.
=head1 LICENSE
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=cut
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