| 1 | package Tk::Menu::Item; |
| 2 | |
| 3 | require Tk::Menu; |
| 4 | |
| 5 | use Carp; |
| 6 | use strict; |
| 7 | |
| 8 | use vars qw($VERSION); |
| 9 | $VERSION = '3.027'; # $Id: //depot/Tk8/Tk/Menu/Item.pm#27 $ |
| 10 | |
| 11 | sub PreInit |
| 12 | { |
| 13 | # Dummy (virtual) method |
| 14 | my ($class,$menu,$minfo) = @_; |
| 15 | } |
| 16 | |
| 17 | sub new |
| 18 | { |
| 19 | my ($class,$menu,%minfo) = @_; |
| 20 | my $kind = $class->kind; |
| 21 | my $name = $minfo{'-label'}; |
| 22 | if (defined $kind) |
| 23 | { |
| 24 | my $invoke = delete $minfo{'-invoke'}; |
| 25 | if (defined $name) |
| 26 | { |
| 27 | # Use ~ in name/label to set -underline |
| 28 | if (defined($minfo{-label}) && !defined($minfo{-underline})) |
| 29 | { |
| 30 | my $cleanlabel = $minfo{-label}; |
| 31 | my $underline = ($cleanlabel =~ s/^(.*)~/$1/) ? length($1): undef; |
| 32 | if (defined($underline) && ($underline >= 0)) |
| 33 | { |
| 34 | $minfo{-underline} = $underline; |
| 35 | $name = $cleanlabel if ($minfo{-label} eq $name); |
| 36 | $minfo{-label} = $cleanlabel; |
| 37 | } |
| 38 | } |
| 39 | } |
| 40 | else |
| 41 | { |
| 42 | $name = $minfo{'-bitmap'} || $minfo{'-image'}; |
| 43 | croak('No -label') unless defined($name); |
| 44 | $minfo{'-label'} = $name; |
| 45 | } |
| 46 | $class->PreInit($menu,\%minfo); |
| 47 | $menu->add($kind,%minfo); |
| 48 | $menu->invoke('last') if ($invoke); |
| 49 | } |
| 50 | else |
| 51 | { |
| 52 | $menu->add('separator'); |
| 53 | } |
| 54 | return bless [$menu,$name],$class; |
| 55 | } |
| 56 | |
| 57 | sub configure |
| 58 | { |
| 59 | my $obj = shift; |
| 60 | my ($menu,$name) = @$obj; |
| 61 | my %args = @_; |
| 62 | $obj->[1] = $args{'-label'} if exists $args{'-label'}; |
| 63 | $menu->entryconfigure($name,@_); |
| 64 | } |
| 65 | |
| 66 | sub cget |
| 67 | { |
| 68 | my $obj = shift; |
| 69 | my ($menu,$name) = @$obj; |
| 70 | $menu->entrycget($name,@_); |
| 71 | } |
| 72 | |
| 73 | sub parentMenu |
| 74 | { |
| 75 | my $obj = shift; |
| 76 | return $obj->[0]; |
| 77 | } |
| 78 | |
| 79 | # Default "kind" is a command |
| 80 | sub kind { return 'command' } |
| 81 | |
| 82 | # Now the derived packages |
| 83 | |
| 84 | package Tk::Menu::Separator; |
| 85 | use base qw(Tk::Menu::Item); |
| 86 | Construct Tk::Menu 'Separator'; |
| 87 | sub kind { return undef } |
| 88 | |
| 89 | package Tk::Menu::Button; |
| 90 | use base qw(Tk::Menu::Item); |
| 91 | Construct Tk::Menu 'Button'; |
| 92 | Construct Tk::Menu 'Command'; |
| 93 | |
| 94 | #package Tk::Menu::Command; |
| 95 | #use base qw(Tk::Menu::Button); |
| 96 | #Construct Tk::Menu 'Command'; |
| 97 | |
| 98 | package Tk::Menu::Cascade; |
| 99 | use base qw(Tk::Menu::Item); |
| 100 | Construct Tk::Menu 'Cascade'; |
| 101 | sub kind { return 'cascade' } |
| 102 | use Carp; |
| 103 | |
| 104 | sub PreInit |
| 105 | { |
| 106 | my ($class,$menu,$minfo) = @_; |
| 107 | my $tearoff = delete $minfo->{-tearoff}; |
| 108 | my $items = delete $minfo->{-menuitems}; |
| 109 | my $widgetvar = delete $minfo->{-menuvar}; |
| 110 | my $command = delete $minfo->{-postcommand}; |
| 111 | my $name = delete $minfo->{'Name'}; |
| 112 | $name = $minfo->{'-label'} unless defined $name; |
| 113 | my @args = (); |
| 114 | push(@args, '-tearoff' => $tearoff) if (defined $tearoff); |
| 115 | push(@args, '-menuitems' => $items) if (defined $items); |
| 116 | push(@args, '-postcommand' => $command) if (defined $command); |
| 117 | my $submenu = $minfo->{'-menu'}; |
| 118 | unless (defined $submenu) |
| 119 | { |
| 120 | $minfo->{'-menu'} = $submenu = $menu->Menu(Name => $name, @args); |
| 121 | } |
| 122 | $$widgetvar = $submenu if (defined($widgetvar) && ref($widgetvar)); |
| 123 | } |
| 124 | |
| 125 | sub menu |
| 126 | { |
| 127 | my ($self,%args) = @_; |
| 128 | my $w = $self->parentMenu; |
| 129 | my $menu = $self->cget('-menu'); |
| 130 | if (!defined $menu) |
| 131 | { |
| 132 | require Tk::Menu; |
| 133 | $w->ColorOptions(\%args); |
| 134 | my $name = $self->cget('-label'); |
| 135 | warn "Had to (re-)reate menu for $name"; |
| 136 | $menu = $w->Menu(Name => $name, %args); |
| 137 | $self->configure('-menu'=>$menu); |
| 138 | } |
| 139 | else |
| 140 | { |
| 141 | $menu->configure(%args) if %args; |
| 142 | } |
| 143 | return $menu; |
| 144 | } |
| 145 | |
| 146 | # Some convenience methods |
| 147 | |
| 148 | sub separator { shift->menu->Separator(@_); } |
| 149 | sub command { shift->menu->Command(@_); } |
| 150 | sub cascade { shift->menu->Cascade(@_); } |
| 151 | sub checkbutton { shift->menu->Checkbutton(@_); } |
| 152 | sub radiobutton { shift->menu->Radiobutton(@_); } |
| 153 | |
| 154 | sub pack |
| 155 | { |
| 156 | my $w = shift; |
| 157 | if ($^W) |
| 158 | { |
| 159 | require Carp; |
| 160 | Carp::carp("Cannot 'pack' $w - done automatically") |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | package Tk::Menu::Checkbutton; |
| 165 | use base qw(Tk::Menu::Item); |
| 166 | Construct Tk::Menu 'Checkbutton'; |
| 167 | sub kind { return 'checkbutton' } |
| 168 | |
| 169 | package Tk::Menu::Radiobutton; |
| 170 | use base qw(Tk::Menu::Item); |
| 171 | Construct Tk::Menu 'Radiobutton'; |
| 172 | sub kind { return 'radiobutton' } |
| 173 | |
| 174 | package Tk::Menu::Item; |
| 175 | |
| 176 | 1; |
| 177 | __END__ |
| 178 | |
| 179 | =cut |
| 180 | |