Frey/ORM/Pager.pm

package Frey::ORM::Pager;
use Moose;
use MooseX::AttributeHelpers;

use Data::Page;
use Data::Dump qw/dump/;

has 'pager' => (
        is => 'rw',
        isa => 'Data::Page',
        default => sub { Data::Page->new },
);

has 'fey_class' => (
        is => 'rw',
        isa => 'Str',
        required => 1,
);

has 'item_constructor' => (
        is => 'rw',
        isa => 'CodeRef',
        required => 1,
);

has 'items' => (
        metaclass => 'Collection::Array',
        is => 'rw',
        isa => 'ArrayRef[Frey::ORM::Item]',
        default => sub { [] },
        provides => {
                'push' => 'add_item',
        },
);

has 'range_around' => (
        is => 'rw',
        isa => 'Int',
        default => 10,
);

has 'page' => (
        is => 'rw',
        isa => 'Int',
        required => 1,
        default => 1,
);

has 'per_page' => (
        is => 'rw',
        isa => 'Int',
        required => 1,
        default => 20,
);

=head1 METHODS

=cut

sub first_item {
        my $self = shift;
        $self->items->[0];
}

sub last_item {
        my $self = shift;
        my $last = $#{ $self->items };
        $self->update_collection if $last < 0;
        $self->items->[ $#{ $self->items } ];
}

=head2 update_collection

  $o->update_collection;

=cut

sub update_collection {
        my ( $self ) = @_;

        return if $#{ $self->items } >= 0;

        warn "## update_collection from iterator";

        if ( ! $self->fey_class->can('collection') ) {
                warn "ERROR: ", $self->fey_class, " can't do collection";
                return;
        }

        my $i = $self->fey_class->collection( $self->pager );
        while ( my $u = $i->next ) {
                $self->add_item(
                        $self->item_constructor->(
                                fey => $u,
                        )
                );
        }
}

=head2 items_in_layout

  my $html = $o->items_in_layout;

=cut

sub items_in_layout {
        my ( $self ) = @_;

        # FIXME somehow, this seem cludgy
        $self->pager->current_page( $self->page );
        $self->items( [] );
        $self->update_collection;

        my $html = join('', map {
                $_->process
        } @{ $self->items } );

        return $html;
}

=head2 render_pager

  my $html = $o->render_pager;

=cut

sub render_pager {
        my $self = shift;

        my $pager = $self->pager;

        my @show_pages;
        my $after_current = 0;

        if ( $pager->current_page <= $self->range_around + 2 ) {
                @show_pages = ( $pager->first_page .. $pager->current_page );
                $after_current = $self->range_around - $pager->current_page;
        } else {
                @show_pages = ( $pager->first_page, '', $pager->current_page - $self->range_around .. $pager->current_page );
        }

        if ( $pager->current_page + $self->range_around + 1 >= $pager->last_page ) {
                push @show_pages, ( $pager->current_page + 1 .. $pager->last_page );
        } else {
                push @show_pages, ( $pager->current_page + 1 .. $pager->current_page + $after_current + $self->range_around, '', $pager->last_page );
        }

        warn "## show_pages = ",dump( @show_pages );

        return join( ' ',
                        qq|<div class="notice">|,
                        'Showing',
                        $pager->first, '-', $pager->last,
                        'of',
                        $pager->total_entries,
                        'results<br>',
#                       'page', $pager->current_page, '/', $pager->last_page,
                        Frey::ORM::Links->new(
                                name => 'page',
                                current => $pager->current_page,
                                values => \@show_pages,
                                empty => '...',
                                current_tag => 'b',
                        )->links,
                        qq|</div>|
                );
}

1;
1	dpavlin	969	package Frey::ORM::Pager;
2	dpavlin	143	use Moose;
3			use MooseX::AttributeHelpers;
4
5			use Data::Page;
6			use Data::Dump qw/dump/;
7
8			has 'pager' => (
9			is => 'rw',
10			isa => 'Data::Page',
11			default => sub { Data::Page->new },
12			);
13
14			has 'fey_class' => (
15			is => 'rw',
16			isa => 'Str',
17			required => 1,
18			);
19
20			has 'item_constructor' => (
21			is => 'rw',
22			isa => 'CodeRef',
23			required => 1,
24			);
25
26			has 'items' => (
27			metaclass => 'Collection::Array',
28			is => 'rw',
29	dpavlin	969	isa => 'ArrayRef[Frey::ORM::Item]',
30	dpavlin	143	default => sub { [] },
31			provides => {
32			'push' => 'add_item',
33			},
34			);
35
36	dpavlin	207	has 'range_around' => (
37			is => 'rw',
38			isa => 'Int',
39			default => 10,
40			);
41
42	dpavlin	969	has 'page' => (
43			is => 'rw',
44			isa => 'Int',
45			required => 1,
46			default => 1,
47			);
48
49			has 'per_page' => (
50			is => 'rw',
51			isa => 'Int',
52			required => 1,
53			default => 20,
54			);
55
56			=head1 METHODS
57
58			=cut
59
60	dpavlin	149	sub first_item {
61			my $self = shift;
62			$self->items->[0];
63			}
64
65	dpavlin	143	sub last_item {
66			my $self = shift;
67			my $last = $#{ $self->items };
68			$self->update_collection if $last < 0;
69			$self->items->[ $#{ $self->items } ];
70			}
71
72			=head2 update_collection
73
74			$o->update_collection;
75
76			=cut
77
78			sub update_collection {
79			my ( $self ) = @_;
80
81			return if $#{ $self->items } >= 0;
82
83			warn "## update_collection from iterator";
84
85	dpavlin	149	if ( ! $self->fey_class->can('collection') ) {
86			warn "ERROR: ", $self->fey_class, " can't do collection";
87			return;
88			}
89
90	dpavlin	143	my $i = $self->fey_class->collection( $self->pager );
91			while ( my $u = $i->next ) {
92			$self->add_item(
93			$self->item_constructor->(
94			fey => $u,
95			)
96			);
97			}
98			}
99
100			=head2 items_in_layout
101
102	dpavlin	969	my $html = $o->items_in_layout;
103	dpavlin	143
104			=cut
105
106			sub items_in_layout {
107	dpavlin	969	my ( $self ) = @_;
108	dpavlin	143
109			# FIXME somehow, this seem cludgy
110	dpavlin	969	$self->pager->current_page( $self->page );
111			$self->items( [] );
112			$self->update_collection;
113	dpavlin	143
114			my $html = join('', map {
115	dpavlin	969	$_->process
116	dpavlin	143	} @{ $self->items } );
117
118			return $html;
119			}
120
121			=head2 render_pager
122
123			my $html = $o->render_pager;
124
125			=cut
126
127			sub render_pager {
128			my $self = shift;
129
130			my $pager = $self->pager;
131
132	dpavlin	207	my @show_pages;
133			my $after_current = 0;
134
135			if ( $pager->current_page <= $self->range_around + 2 ) {
136			@show_pages = ( $pager->first_page .. $pager->current_page );
137			$after_current = $self->range_around - $pager->current_page;
138			} else {
139			@show_pages = ( $pager->first_page, '', $pager->current_page - $self->range_around .. $pager->current_page );
140			}
141
142			if ( $pager->current_page + $self->range_around + 1 >= $pager->last_page ) {
143			push @show_pages, ( $pager->current_page + 1 .. $pager->last_page );
144			} else {
145			push @show_pages, ( $pager->current_page + 1 .. $pager->current_page + $after_current + $self->range_around, '', $pager->last_page );
146			}
147
148			warn "## show_pages = ",dump( @show_pages );
149
150	dpavlin	143	return join( ' ',
151			qq\|<div class="notice">\|,
152			'Showing',
153			$pager->first, '-', $pager->last,
154			'of',
155			$pager->total_entries,
156			'results<br>',
157			# 'page', $pager->current_page, '/', $pager->last_page,
158	dpavlin	969	Frey::ORM::Links->new(
159	dpavlin	143	name => 'page',
160			current => $pager->current_page,
161	dpavlin	207	values => \@show_pages,
162			empty => '...',
163			current_tag => 'b',
164	dpavlin	143	)->links,
165			qq\|</div>\|
166			);
167			}
168
169			1;