summaryrefslogtreecommitdiff
path: root/Master/tlpkg/tlperl/lib/Tk/Menu/Item.pm
blob: 167715f9382061622377dbc06501cc140819546a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
package Tk::Menu::Item;

require Tk::Menu;

use Carp;
use strict;

use vars qw($VERSION);
$VERSION = '4.005'; # $Id: //depot/Tkutf8/Tk/Menu/Item.pm#4 $

sub PreInit
{
 # Dummy (virtual) method
 my ($class,$menu,$minfo) = @_;
}

sub new
{
 my ($class,$menu,%minfo) = @_;
 my $kind = $class->kind;
 my $name = $minfo{'-label'};
 if (defined $kind)
  {
   my $invoke = delete $minfo{'-invoke'};
   if (defined $name)
    {
     # Use ~ in name/label to set -underline
     if (defined($minfo{-label}) && !defined($minfo{-underline}))
      {
       my $cleanlabel = $minfo{-label};
       my $underline = ($cleanlabel =~ s/^(.*)~/$1/) ? length($1): undef;
       if (defined($underline) && ($underline >= 0))
        {
         $minfo{-underline} = $underline;
         $name = $cleanlabel if ($minfo{-label} eq $name);
         $minfo{-label} = $cleanlabel;
        }
      }
    }
   else
    {
     $name = $minfo{'-bitmap'} || $minfo{'-image'};
     croak('No -label') unless defined($name);
     $minfo{'-label'} = $name;
    }
   $class->PreInit($menu,\%minfo);
   $menu->add($kind,%minfo);
   $menu->invoke('last') if ($invoke);
  }
 else
  {
   $menu->add('separator');
  }
 return bless [$menu,$name],$class;
}

sub configure
{
 my $obj = shift;
 my ($menu,$name) = @$obj;
 my %args = @_;
 $obj->[1] = $args{'-label'} if exists $args{'-label'};
 $menu->entryconfigure($name,@_);
}

sub cget
{
 my $obj = shift;
 my ($menu,$name) = @$obj;
 $menu->entrycget($name,@_);
}

sub parentMenu
{
 my $obj = shift;
 return $obj->[0];
}

# Default "kind" is a command
sub kind { return 'command' }

# Now the derived packages

package Tk::Menu::Separator;
use base qw(Tk::Menu::Item);
Construct Tk::Menu 'Separator';
sub kind { return undef }

package Tk::Menu::Button;
use base qw(Tk::Menu::Item);
Construct Tk::Menu 'Button';
Construct Tk::Menu 'Command';

#package Tk::Menu::Command;
#use base qw(Tk::Menu::Button);
#Construct Tk::Menu 'Command';

package Tk::Menu::Cascade;
use base qw(Tk::Menu::Item);
Construct Tk::Menu 'Cascade';
sub kind { return 'cascade' }
use Carp;

sub PreInit
{
 my ($class,$menu,$minfo) = @_;
 my $tearoff   = delete $minfo->{-tearoff};
 my $items     = delete $minfo->{-menuitems};
 my $widgetvar = delete $minfo->{-menuvar};
 my $command   = delete $minfo->{-postcommand};
 my $name = delete $minfo->{'Name'};
 $name = $minfo->{'-label'} unless defined $name;
 my @args = ();
 push(@args, '-tearoff' => $tearoff) if (defined $tearoff);
 push(@args, '-menuitems' => $items) if (defined $items);
 push(@args, '-postcommand' => $command) if (defined $command);
 my $submenu = $minfo->{'-menu'};
 unless (defined $submenu)
  {
   $minfo->{'-menu'} = $submenu = $menu->Menu(Name => $name, @args);
  }
 $$widgetvar = $submenu if (defined($widgetvar) && ref($widgetvar));
}

sub menu
{
 my ($self,%args) = @_;
 my $w = $self->parentMenu;
 my $menu = $self->cget('-menu');
 if (!defined $menu)
  {
   require Tk::Menu;
   $w->ColorOptions(\%args);
   my $name = $self->cget('-label');
   warn "Had to (re-)reate menu for $name";
   $menu = $w->Menu(Name => $name, %args);
   $self->configure('-menu'=>$menu);
  }
 else
  {
   $menu->configure(%args) if %args;
  }
 return $menu;
}

# Some convenience methods

sub separator   {  shift->menu->Separator(@_);   }
sub command     {  shift->menu->Command(@_);     }
sub cascade     {  shift->menu->Cascade(@_);     }
sub checkbutton {  shift->menu->Checkbutton(@_); }
sub radiobutton {  shift->menu->Radiobutton(@_); }

sub pack
{
 my $w = shift;
 if ($^W)
  {
   require Carp;
   Carp::carp("Cannot 'pack' $w - done automatically")
  }
}

package Tk::Menu::Checkbutton;
use base qw(Tk::Menu::Item);
Construct Tk::Menu 'Checkbutton';
sub kind { return 'checkbutton' }

package Tk::Menu::Radiobutton;
use base qw(Tk::Menu::Item);
Construct Tk::Menu 'Radiobutton';
sub kind { return 'radiobutton' }

package Tk::Menu::Item;

1;
__END__