1 package SL::Presenter::Tag;
5 use SL::HTML::Restrict;
7 use parent qw(Exporter);
9 use Exporter qw(import);
10 our @EXPORT = qw(html_tag input_tag hidden_tag javascript man_days_tag name_to_id select_tag checkbox_tag stringify_attributes restricted_html);
14 my %_valueless_attributes = map { $_ => 1 } qw(
15 checked compact declare defer disabled ismap multiple noresize noshade nowrap
16 readonly selected hidden
20 my ($object, $method, @params) = @_;
21 return $object->$method(@params);
24 { # This will give you an id for identifying html tags and such.
25 # It's guaranteed to be unique unless you exceed 10 mio calls per request.
26 # Do not use these id's to store information across requests.
27 my $_id_sequence = int rand 1e7;
29 return ( $_id_sequence = ($_id_sequence + 1) % 1e7 );
34 sub stringify_attributes {
35 my ($self, %params) = @_;
38 while (my ($name, $value) = each %params) {
40 next if $_valueless_attributes{$name} && !$value;
41 $value = '' if !defined($value);
42 push @result, $_valueless_attributes{$name} ? $self->escape($name) : $self->escape($name) . '="' . $self->escape($value) . '"';
45 return @result ? ' ' . join(' ', @result) : '';
49 my ($self, $tag, $content, %params) = @_;
50 my $attributes = $self->stringify_attributes(%params);
52 return "<${tag}${attributes}>" unless defined($content);
53 return "<${tag}${attributes}>${content}</${tag}>";
57 my ($self, $name, $value, %attributes) = @_;
59 _set_id_attribute(\%attributes, $name);
60 $attributes{type} ||= 'text';
62 return $self->html_tag('input', undef, %attributes, name => $name, value => $value);
66 my ($self, $name, $value, %attributes) = @_;
67 return $self->input_tag($name, $value, %attributes, type => 'hidden');
71 my ($self, $name, $object, %attributes) = @_;
73 my $size = delete($attributes{size}) || 5;
77 my $time_selection = $self->input_tag( "${name}_as_man_days_string", _call_on($object, "${method}_as_man_days_string"), %attributes, size => $size);
78 my $unit_selection = $self->select_tag("${name}_as_man_days_unit", [[ 'h', $::locale->text('h') ], [ 'man_day', $::locale->text('MD') ]],
79 %attributes, default => _call_on($object, "${method}_as_man_days_unit"));
81 return $time_selection . $unit_selection;
85 my ($self, $name) = @_;
87 $name =~ s/\[\+?\]/ _id() /ge; # give constructs with [] or [+] unique ids
88 $name =~ s/[^\w_]/_/g;
95 my ($self, $name, $collection, %attributes) = @_;
97 _set_id_attribute(\%attributes, $name);
99 my $value_key = delete($attributes{value_key}) || 'id';
100 my $title_key = delete($attributes{title_key}) || $value_key;
101 my $default_key = delete($attributes{default_key}) || 'selected';
102 my $default_val_key = delete($attributes{default_value_key});
103 my $default_coll = delete($attributes{default});
105 my $value_title_sub = delete($attributes{value_title_sub});
107 my $value_sub = delete($attributes{value_sub});
108 my $title_sub = delete($attributes{title_sub});
109 my $default_sub = delete($attributes{default_sub});
111 my $with_empty = delete($attributes{with_empty});
112 my $empty_title = delete($attributes{empty_title});
114 my $with_optgroups = delete($attributes{with_optgroups});
116 undef $default_key if $default_sub || $default_val_key;
118 my $normalize_entry = sub {
119 my ($type, $entry, $sub, $key) = @_;
121 return $sub->($entry) if $sub;
123 my $ref = ref($entry);
126 return $entry if $type eq 'value' || $type eq 'title';
130 if ( $ref eq 'ARRAY' ) {
131 return $entry->[ $type eq 'value' ? 0 : $type eq 'title' ? 1 : 2 ];
134 return $entry->{$key} if $ref eq 'HASH';
135 return $entry->$key if $type ne 'default' || $entry->can($key);
140 if (defined($default_coll) && !ref $default_coll) {
141 %selected = ($default_coll => 1);
143 } elsif (ref($default_coll) eq 'HASH') {
144 %selected = %{ $default_coll };
146 } elsif ($default_coll) {
147 $default_coll = [ $default_coll ] unless 'ARRAY' eq ref $default_coll;
149 %selected = $default_val_key ? map({ ($normalize_entry->('value', $_, undef, $default_val_key) => 1) } @{ $default_coll })
150 : map({ ($_ => 1) } @{ $default_coll });
153 my $list_to_code = sub {
154 my ($sub_collection) = @_;
156 if ('ARRAY' ne ref $sub_collection) {
157 $sub_collection = [ $sub_collection ];
161 foreach my $entry ( @{ $sub_collection } ) {
165 if ( $value_title_sub ) {
166 ($value, $title) = @{ $value_title_sub->($entry) };
169 $value = $normalize_entry->('value', $entry, $value_sub, $value_key);
170 $title = $normalize_entry->('title', $entry, $title_sub, $title_key);
173 my $default = $default_key ? $normalize_entry->('default', $entry, $default_sub, $default_key) : 0;
175 push(@options, [$value, $title, $selected{$value} || $default]);
178 return join '', map { $self->html_tag('option', $self->escape($_->[1]), value => $_->[0], selected => $_->[2]) } @options;
182 $code .= $self->html_tag('option', $self->escape($empty_title || ''), value => '') if $with_empty;
184 if (!$with_optgroups) {
185 $code .= $list_to_code->($collection);
188 $code .= join '', map {
189 my ($optgroup_title, $sub_collection) = @{ $_ };
190 $self->html_tag('optgroup', $list_to_code->($sub_collection), label => $optgroup_title)
194 return $self->html_tag('select', $code, %attributes, name => $name);
198 my ($self, $name, %attributes) = @_;
200 _set_id_attribute(\%attributes, $name);
202 $attributes{value} = 1 unless defined $attributes{value};
203 my $label = delete $attributes{label};
204 my $checkall = delete $attributes{checkall};
205 my $for_submit = delete $attributes{for_submit};
207 if ($attributes{checked}) {
208 $attributes{checked} = 'checked';
210 delete $attributes{checked};
214 $code .= $self->hidden_tag($name, 0, %attributes, id => $attributes{id} . '_hidden') if $for_submit;
215 $code .= $self->html_tag('input', undef, %attributes, name => $name, type => 'checkbox');
216 $code .= $self->html_tag('label', $label, for => $attributes{id}) if $label;
217 $code .= $self->javascript(qq|\$('#$attributes{id}').checkall('$checkall');|) if $checkall;
223 my ($self, $data) = @_;
224 return $self->html_tag('script', $data, type => 'text/javascript');
227 sub _set_id_attribute {
228 my ($attributes, $name, $unique) = @_;
230 if (!delete($attributes->{no_id}) && !$attributes->{id}) {
231 $attributes->{id} = name_to_id(undef, $name);
232 $attributes->{id} .= '_' . $attributes->{value} if $unique;
235 return %{ $attributes };
240 sub restricted_html {
241 my ($self, $value) = @_;
243 $html_restricter ||= SL::HTML::Restrict->create;
244 return $html_restricter->process($value);
256 SL::Presenter::Tag - Layouting / tag generation
264 [% P.select_tag('direction', [ [ 'left', 'To the left' ], [ 'right', 'To the right', 1 ] ]) %]
266 [% P.select_tag('direction', [ { direction => 'left', display => 'To the left' },
267 { direction => 'right', display => 'To the right' } ],
268 value_key => 'direction', title_key => 'display', default => 'right') %]
270 [% P.select_tag('direction', [ { direction => 'left', display => 'To the left' },
271 { direction => 'right', display => 'To the right', selected => 1 } ],
272 value_key => 'direction', title_key => 'display') %]
274 # Use an RDBO object and its n:m relationship as the default
275 # values. For example, a user can be a member of many groups. "All
276 # groups" is therefore the full collection and "$user->groups" is a
277 # list of RDBO AuthGroup objects whose IDs must match the ones in
278 # "All groups". This could look like the following:
279 [% P.select_tag('user.groups[]', SELF.all_groups, multiple=1,
280 default=SELF.user.groups, default_value_key='id' ) %]
284 A module modeled a bit after Rails' ActionView helpers. Several small
285 functions that create HTML tags from various kinds of data sources.
287 The C<id> attribute is usually calculated automatically. This can be
288 overridden by either specifying an C<id> attribute or by setting
293 =head2 LOW-LEVEL FUNCTIONS
297 =item C<html_tag $tag_name, $content_string, %attributes>
299 Creates an opening and closing HTML tag for C<$tag_name> and puts
300 C<$content_string> between the two. If C<$content_string> is undefined
301 or empty then only a E<lt>tag/E<gt> tag will be created. Attributes
302 are key/value pairs added to the opening tag.
304 C<$content_string> is not HTML escaped.
306 =item C<name_to_id $name>
308 Converts a name to a HTML id by replacing various characters.
310 =item C<stringify_attributes %items>
312 Creates a string from all elements in C<%items> suitable for usage as
313 HTML tag attributes. Keys and values are HTML escaped even though keys
314 must not contain non-ASCII characters for browsers to accept them.
316 =item C<restricted_html $html>
318 Returns HTML stripped of unknown tags. See L<SL::HTML::Restrict>.
322 =head2 HIGH-LEVEL FUNCTIONS
326 =item C<input_tag $name, $value, %attributes>
328 Creates a HTML 'input type=text' tag named C<$name> with the value
329 C<$value> and with arbitrary HTML attributes from C<%attributes>. The
330 tag's C<id> defaults to C<name_to_id($name)>.
332 =item C<man_days_tag $name, $object, %attributes>
334 Creates two HTML inputs: a text input for entering a number and a drop
335 down box for chosing the unit (either 'man days' or 'hours').
337 C<$object> must be a L<Rose::DB::Object> instance using the
338 L<SL::DB::Helper::AttrDuration> helper.
340 C<$name> is supposed to be the name of the underlying column,
341 e.g. C<time_estimation> for an instance of
342 C<SL::DB::RequirementSpecItem>. If C<$name> has the form
343 C<prefix.method> then the full C<$name> is used for the input's base
344 names while the methods called on C<$object> are only the suffix. This
345 makes it possible to write statements like e.g.
347 [% P.man_days_tag("requirement_spec_item.time_estimation", SELF.item) %]
349 The attribute C<size> can be used to set the text input's size. It
352 =item C<select_tag $name, \@collection, %attributes>
354 Creates an HTML 'select' tag named C<$name> with the contents of one
355 'E<lt>optionE<gt>' tag for each element in C<\@collection> and with arbitrary
356 HTML attributes from C<%attributes>. The value
357 to use and the title to display are extracted from the elements in
358 C<\@collection>. Each element can be one of four things:
362 =item 1. An array reference with at least two elements. The first element is
363 the value, the second element is its title. The third element is optional and and should contain a boolean.
364 If it is true, than the element will be used as default.
366 =item 2. A scalar. The scalar is both the value and the title.
368 =item 3. A hash reference. In this case C<%attributes> must contain
369 I<value_key>, I<title_key> and may contain I<default_key> keys that name the keys in the element to use
370 for the value, title and default respectively.
372 =item 4. A blessed reference. In this case C<%attributes> must contain
373 I<value_key>, I<title_key> and may contain I<default_key> keys that name functions called on the blessed
374 reference whose return values are used as the value, title and default
379 For cases 3 and 4 C<$attributes{value_key}> defaults to C<id>,
380 C<$attributes{title_key}> defaults to C<$attributes{value_key}> and
381 C<$attributes{default_key}> defaults to C<selected>. Note that
382 C<$attributes{default_key}> is set to C<undef> if
383 C<$attributes{default_value_key}> is used as well (see below).
385 In addition to pure keys/method you can also provide coderefs as I<value_sub>
386 and/or I<title_sub> and/or I<default_sub>. If present, these take precedence over keys or methods,
387 and are called with the element as first argument. It must return the value, title or default.
389 Lastly a joint coderef I<value_title_sub> may be provided, which in turn takes
390 precedence over the C<value_sub> and C<title_sub> subs. It will only be called once for each
391 element and must return a list of value and title.
393 If the option C<with_empty> is set then an empty element (value
394 C<undef>) will be used as the first element. The title to display for
395 this element can be set with the option C<empty_title> and defaults to
398 The tag's C<id> defaults to C<name_to_id($name)>.
400 The option C<default> can be quite a lot of things:
404 =item 1. A scalar value. This is the value of the entry that's
407 =item 2. A hash reference for C<multiple=1>. Whether or not an entry
408 is selected by default is looked up in this hash.
410 =item 3. An array reference containing scalar values. Same as 1., just
411 for the case of C<multiple=1>.
413 =item 4. If C<default_value_key> is given: an array reference of hash
414 references. For each hash reference the value belonging to the key
415 C<default_value_key> is treated as one value to select by
416 default. Constructs a hash that's treated like 3.
418 =item 5. If C<default_value_key> is given: an array reference of
419 blessed objects. For each object the value returne from calling the
420 function named C<default_value_key> on the object is treated as one
421 value to select by default. Constructs a hash that's treated like 3.
425 5. also applies to single RDBO instances (due to 'wantarray'
426 shenanigans assigning RDBO's relationships to a hash key will result
427 in a single RDBO object being assigned instead of an array reference
428 containing that single RDBO object).
430 If the option C<with_optgroups> is set then this function expects
431 C<\@collection> to be one level deeper. The upper-most level is
432 translated into an HTML C<optgroup> tag. So the structure becomes:
436 =item 1. Array of array references. Each element in the
437 C<\@collection> is converted into an optgroup.
439 =item 2. The optgroup's C<label> attribute will be set to the
440 first element in the array element. The second array element is then
441 converted to a list of C<option> tags as described above.
445 Example for use of optgroups:
447 # First in a controller:
449 [ t8("First optgroup with three items"),
450 [ { id => 42, name => "item one" },
451 { id => 54, name => "second item" },
452 { id => 23, name => "and the third one" },
454 [ t8("Another optgroup, with a lot of items from Rose"),
455 SL::DB::Manager::Customer->get_all_sorted ],
458 # Later in the template:
459 [% L.select_tag('the_selection', COLLECTION, with_optgroups=1, title_key='name') %]
469 Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>,
470 Sven Schöling E<lt>s.schoeling@linet-services.deE<gt>