Commit | Line | Data |
d0eafc11 |
1 | package Excel::Template::Factory; |
2 | |
3 | use strict; |
4 | |
5 | BEGIN { |
6 | use vars qw(%Manifest %isBuildable); |
7 | } |
8 | |
9 | %Manifest = ( |
10 | |
11 | # These are the instantiable nodes |
12 | 'IF' => 'Excel::Template::Container::Conditional', |
13 | 'LOOP' => 'Excel::Template::Container::Loop', |
14 | 'ROW' => 'Excel::Template::Container::Row', |
15 | 'SCOPE' => 'Excel::Template::Container::Scope', |
16 | 'WORKBOOK' => 'Excel::Template::Container::Workbook', |
17 | 'WORKSHEET' => 'Excel::Template::Container::Worksheet', |
18 | |
37513eae |
19 | 'BACKREF' => 'Excel::Template::Element::Backref', |
d0eafc11 |
20 | 'CELL' => 'Excel::Template::Element::Cell', |
21 | 'FORMULA' => 'Excel::Template::Element::Formula', |
37513eae |
22 | 'RANGE' => 'Excel::Template::Element::Range', |
d0eafc11 |
23 | 'VAR' => 'Excel::Template::Element::Var', |
24 | |
25 | 'FORMAT' => 'Excel::Template::Container::Format', |
26 | |
27 | # These are all the Format short-cut objects |
37513eae |
28 | # They are also instantiable |
d0eafc11 |
29 | 'BOLD' => 'Excel::Template::Container::Bold', |
30 | 'HIDDEN' => 'Excel::Template::Container::Hidden', |
31 | 'ITALIC' => 'Excel::Template::Container::Italic', |
32 | 'LOCKED' => 'Excel::Template::Container::Locked', |
33 | 'OUTLINE' => 'Excel::Template::Container::Outline', |
34 | 'SHADOW' => 'Excel::Template::Container::Shadow', |
35 | 'STRIKEOUT' => 'Excel::Template::Container::Strikeout', |
36 | |
37 | # These are the helper objects |
37513eae |
38 | # They are also in here to make E::T::Factory::isa() work. |
d0eafc11 |
39 | 'CONTEXT' => 'Excel::Template::Context', |
40 | 'ITERATOR' => 'Excel::Template::Iterator', |
41 | 'TEXTOBJECT' => 'Excel::Template::TextObject', |
42 | |
43 | 'CONTAINER' => 'Excel::Template::Container', |
44 | 'ELEMENT' => 'Excel::Template::Element', |
45 | |
46 | 'BASE' => 'Excel::Template::Base', |
47 | ); |
48 | |
49 | %isBuildable = map { $_ => 1 } qw( |
50 | BOLD |
51 | CELL |
52 | FORMAT |
53 | FORMULA |
54 | IF |
55 | ITALIC |
56 | OUTLINE |
57 | LOOP |
37513eae |
58 | BACKREF |
59 | RANGE |
d0eafc11 |
60 | ROW |
61 | SHADOW |
62 | STRIKEOUT |
63 | VAR |
64 | WORKBOOK |
65 | WORKSHEET |
66 | ); |
67 | |
68 | sub register |
69 | { |
70 | my %params = @_; |
71 | |
72 | my @param_names = qw(name class isa); |
73 | for (@param_names) |
74 | { |
75 | unless ($params{$_}) |
76 | { |
77 | warn "$_ was not supplied to register()\n"; |
78 | return 0; |
79 | } |
80 | } |
81 | |
82 | my $name = uc $params{name}; |
83 | if (exists $Manifest{$name}) |
84 | { |
85 | warn "$params{name} already exists in the manifest.\n"; |
86 | return 0; |
87 | } |
88 | |
89 | my $isa = uc $params{isa}; |
90 | unless (exists $Manifest{$isa}) |
91 | { |
92 | warn "$params{isa} does not exist in the manifest.\n"; |
93 | return 0; |
94 | } |
95 | |
96 | $Manifest{$name} = $params{class}; |
97 | $isBuildable{$name} = 1; |
98 | |
99 | { |
100 | no strict 'refs'; |
101 | unshift @{"$params{class}::ISA"}, $Manifest{$isa}; |
102 | } |
103 | |
104 | return 1; |
105 | } |
106 | |
107 | sub create |
108 | { |
109 | my $class = shift; |
110 | my $name = uc shift; |
111 | |
112 | return unless exists $Manifest{$name}; |
113 | |
114 | (my $filename = $Manifest{$name}) =~ s!::!/!g; |
115 | |
116 | eval { |
117 | require "$filename.pm"; |
118 | }; if ($@) { |
119 | die "Cannot find or compile PM file for '$name' ($filename)\n"; |
120 | } |
121 | |
122 | return $Manifest{$name}->new(@_); |
123 | } |
124 | |
125 | sub create_node |
126 | { |
127 | my $class = shift; |
128 | my $name = uc shift; |
129 | |
130 | return unless exists $isBuildable{$name}; |
131 | |
132 | return $class->create($name, @_); |
133 | } |
134 | |
135 | sub isa |
136 | { |
137 | return unless @_ >= 2; |
138 | exists $Manifest{uc $_[1]} |
139 | ? UNIVERSAL::isa($_[0], $Manifest{uc $_[1]}) |
140 | : UNIVERSAL::isa(@_) |
141 | } |
142 | |
37513eae |
143 | sub is_embedded |
144 | { |
145 | return unless @_ >= 1; |
146 | |
147 | isa( $_[0], $_ ) && return !!1 for qw( VAR BACKREF RANGE ); |
148 | return; |
149 | } |
150 | |
d0eafc11 |
151 | 1; |
152 | __END__ |
153 | |
154 | =head1 NAME |
155 | |
156 | Excel::Template::Factory |
157 | |
158 | =head1 PURPOSE |
159 | |
37513eae |
160 | To provide a common way to instantiate Excel::Template nodes |
d0eafc11 |
161 | |
37513eae |
162 | =head1 USAGE |
d0eafc11 |
163 | |
37513eae |
164 | =head2 register() |
d0eafc11 |
165 | |
37513eae |
166 | Use this to register your own nodes. |
d0eafc11 |
167 | |
37513eae |
168 | Example forthcoming. |
d0eafc11 |
169 | |
170 | =head1 AUTHOR |
171 | |
c09684ff |
172 | Rob Kinyon (rob.kinyon@gmail.com) |
d0eafc11 |
173 | |
174 | =head1 SEE ALSO |
175 | |
176 | =cut |