kivitendo/SL/Template/Plugin/L.pm @ 997c9f23
| 8177c150 | Moritz Bunkus | package SL::Template::Plugin::L;
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use base qw( Template::Plugin );
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use Template::Plugin;
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use strict;
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| 47978b5b | Moritz Bunkus | sub _H {
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my $string = shift;
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return $::locale->quote_special_chars('HTML', $string);
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}
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| 3cc77e53 | Moritz Bunkus | sub _hashify {
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return (@_ && (ref($_[0]) eq 'HASH')) ? %{ $_[0] } : @_;
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}
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| 8177c150 | Moritz Bunkus | sub new {
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my $class = shift;
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my $context = shift;
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return bless { }, $class;
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}
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| 71f55f78 | Moritz Bunkus | sub name_to_id {
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my $self = shift;
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my $name = shift;
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$name =~ s/[^\w_]/_/g;
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$name =~ s/_+/_/g;
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return $name;
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}
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| 8177c150 | Moritz Bunkus | sub attributes {
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my $self = shift;
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| 3cc77e53 | Moritz Bunkus | my %options = _hashify(@_);
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| 8177c150 | Moritz Bunkus | |||
my @result = ();
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| 3cc77e53 | Moritz Bunkus | while (my ($name, $value) = each %options) {
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| 8177c150 | Moritz Bunkus | next unless $name;
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$value ||= '';
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| 47978b5b | Moritz Bunkus | push @result, _H($name) . '="' . _H($value) . '"';
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| 8177c150 | Moritz Bunkus | }
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return @result ? ' ' . join(' ', @result) : '';
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}
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sub html_tag {
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my $self = shift;
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my $tag = shift;
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my $content = shift;
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| 3cc77e53 | Moritz Bunkus | my $attributes = $self->attributes(@_);
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| 8177c150 | Moritz Bunkus | |||
return "<${tag}${attributes}/>" unless $content;
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return "<${tag}${attributes}>${content}</${tag}>";
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}
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sub select_tag {
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| 3cc77e53 | Moritz Bunkus | my $self = shift;
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my $name = shift;
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my $options_str = shift;
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my %attributes = _hashify(@_);
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$attributes{id} ||= $self->name_to_id($name);
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return $self->html_tag('select', $options_str, %attributes, name => $name);
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}
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sub checkbox_tag {
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my $self = shift;
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my $name = shift;
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my %attributes = _hashify(@_);
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$attributes{id} ||= $self->name_to_id($name);
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$attributes{value} = 1 unless defined $attributes{value};
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my $label = delete $attributes{label};
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if ($attributes{checked}) {
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$attributes{checked} = 'checked';
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} else {
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delete $attributes{checked};
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}
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| 8177c150 | Moritz Bunkus | |||
| 3cc77e53 | Moritz Bunkus | my $code = $self->html_tag('input', undef, %attributes, name => $name, type => 'checkbox');
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$code .= $self->html_tag('label', $label, for => $attributes{id}) if $label;
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| 8177c150 | Moritz Bunkus | |||
| 3cc77e53 | Moritz Bunkus | return $code;
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}
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sub input_tag {
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my $self = shift;
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my $name = shift;
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my $value = shift;
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my %attributes = _hashify(@_);
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$attributes{id} ||= $self->name_to_id($name);
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$attributes{type} ||= 'text';
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return $self->html_tag('input', undef, %attributes, name => $name, value => $value);
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| 8177c150 | Moritz Bunkus | }
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sub options_for_select {
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my $self = shift;
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my $collection = shift;
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| 3cc77e53 | Moritz Bunkus | my %options = _hashify(@_);
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| 8177c150 | Moritz Bunkus | |||
| 3cc77e53 | Moritz Bunkus | my $value_key = $options{value} || 'id';
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my $title_key = $options{title} || $value_key;
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| 8177c150 | Moritz Bunkus | |||
| ee61dd2b | Moritz Bunkus | my @elements = ();
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push @elements, [ undef, $options{empty_title} || '' ] if $options{with_empty};
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| 8177c150 | Moritz Bunkus | if ($collection && (ref $collection eq 'ARRAY')) {
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foreach my $element (@{ $collection }) {
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my @result = !ref $element ? ( $element, $element )
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: ref $element eq 'ARRAY' ? ( $element->[0], $element->[1] )
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: ref $element eq 'HASH' ? ( $element->{$value_key}, $element->{$title_key} )
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: ( $element->$value_key, $element->$title_key );
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| ee61dd2b | Moritz Bunkus | push @elements, \@result;
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| 8177c150 | Moritz Bunkus | }
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}
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| ee61dd2b | Moritz Bunkus | my $code = '';
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foreach my $result (@elements) {
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my %attributes = ( value => $result->[0] );
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$attributes{selected} = 'selected' if $options{default} && ($options{default} eq ($result->[0] || ''));
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$code .= $self->html_tag('option', _H($result->[1]), %attributes);
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}
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return $code;
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| 8177c150 | Moritz Bunkus | }
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1;
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__END__
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=head1 NAME
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SL::Templates::Plugin::L -- Layouting / tag generation
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=head1 SYNOPSIS
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Usage from a template:
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[% USE L %]
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[% L.select_tag('direction', [ [ 'left', 'To the left' ], [ 'right', 'To the right' ] ]) %]
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[% L.select_tag('direction', L.options_for_select([ { direction => 'left', display => 'To the left' },
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{ direction => 'right', display => 'To the right' } ],
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value => 'direction', title => 'display', default => 'right')) %]
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=head1 DESCRIPTION
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A module modeled a bit after Rails' ActionView helpers. Several small
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functions that create HTML tags from various kinds of data sources.
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=head1 FUNCTIONS
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| 71f55f78 | Moritz Bunkus | =head2 LOW-LEVEL FUNCTIONS
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| 8177c150 | Moritz Bunkus | =over 4
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| 71f55f78 | Moritz Bunkus | =item C<name_to_id $name>
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Converts a name to a HTML id by replacing various characters.
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| 3cc77e53 | Moritz Bunkus | =item C<attributes %items>
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| 8177c150 | Moritz Bunkus | |||
| 3cc77e53 | Moritz Bunkus | Creates a string from all elements in C<%items> suitable for usage as
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| 8177c150 | Moritz Bunkus | HTML tag attributes. Keys and values are HTML escaped even though keys
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must not contain non-ASCII characters for browsers to accept them.
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| 3cc77e53 | Moritz Bunkus | =item C<html_tag $tag_name, $content_string, %attributes>
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| 8177c150 | Moritz Bunkus | |||
Creates an opening and closing HTML tag for C<$tag_name> and puts
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C<$content_string> between the two. If C<$content_string> is undefined
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or empty then only a E<lt>tag/E<gt> tag will be created. Attributes
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are key/value pairs added to the opening tag.
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| 71f55f78 | Moritz Bunkus | C<$content_string> is not HTML escaped.
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=back
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=head2 HIGH-LEVEL FUNCTIONS
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=over 4
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| 3cc77e53 | Moritz Bunkus | =item C<select_tag $name, $options_string, %attributes>
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| 71f55f78 | Moritz Bunkus | |||
| 3cc77e53 | Moritz Bunkus | Creates a HTML 'select' tag named C<$name> with the contents
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C<$options_string> and with arbitrary HTML attributes from
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C<%attributes>. The tag's C<id> defaults to C<name_to_id($name)>.
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| 71f55f78 | Moritz Bunkus | |||
The $options_string is usually created by the C<options_for_select>
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function.
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| 3cc77e53 | Moritz Bunkus | =item C<input_tag $name, $value, %attributes>
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Creates a HTML 'input type=text' tag named C<$name> with the value
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C<$value> and with arbitrary HTML attributes from C<%attributes>. The
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tag's C<id> defaults to C<name_to_id($name)>.
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=item C<checkbox_tag $name, %attributes>
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Creates a HTML 'input type=checkbox' tag named C<$name> with arbitrary
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HTML attributes from C<%attributes>. The tag's C<id> defaults to
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C<name_to_id($name)>. The tag's C<value> defaults to C<1>.
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If C<%attributes> contains a key C<label> then a HTML 'label' tag is
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created with said C<label>. No attribute named C<label> is created in
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that case.
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| 71f55f78 | Moritz Bunkus | =back
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=head2 CONVERSION FUNCTIONS
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=over 4
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| 3cc77e53 | Moritz Bunkus | =item C<options_for_select \@collection, %options>
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| 8177c150 | Moritz Bunkus | |||
Creates a string suitable for a HTML 'select' tag consisting of one
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'E<lt>optionE<gt>' tag for each element in C<\@collection>. The value
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to use and the title to display are extracted from the elements in
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C<\@collection>. Each element can be one of four things:
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=over 12
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=item 1. An array reference with at least two elements. The first element is
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the value, the second element is its title.
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=item 2. A scalar. The scalar is both the value and the title.
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| 3cc77e53 | Moritz Bunkus | =item 3. A hash reference. In this case C<%options> must contain
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| 8177c150 | Moritz Bunkus | I<value> and I<title> keys that name the keys in the element to use
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for the value and title respectively.
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| 3cc77e53 | Moritz Bunkus | =item 4. A blessed reference. In this case C<%options> must contain
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| 8177c150 | Moritz Bunkus | I<value> and I<title> keys that name functions called on the blessed
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reference whose return values are used as the value and title
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respectively.
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=back
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For cases 3 and 4 C<$options{value}> defaults to C<id> and
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C<$options{title}> defaults to C<$options{value}>.
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| ee61dd2b | Moritz Bunkus | If the option C<with_empty> is set then an empty element (value
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C<undef>) will be used as the first element. The title to display for
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this element can be set with the option C<empty_title> and defaults to
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an empty string.
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| 8177c150 | Moritz Bunkus | =back
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=head1 MODULE AUTHORS
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Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>
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L<http://linet-services.de>
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