Frey/ORM/Pager.pm

package Frey::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::Web::Item]',
        default => sub { [] },
        provides => {
                'push' => 'add_item',
        },
);

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

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( $f );

=cut

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

        my $layout = delete( $f->{layout} );

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

        my $html = join('', map {
                $_->layout( $layout ) if $layout;
                $_->process($f) || ''
        } @{ $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::Web::Links->new(
                                name => 'page',
                                current => $pager->current_page,
                                values => \@show_pages,
                                empty => '...',
                                current_tag => 'b',
                        )->links,
                        qq|</div>|
                );
}

1;
1	dpavlin	143	package Frey::Pager;
2			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			isa => 'ArrayRef[Frey::Web::Item]',
30			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	149	sub first_item {
43			my $self = shift;
44			$self->items->[0];
45			}
46
47	dpavlin	143	sub last_item {
48			my $self = shift;
49			my $last = $#{ $self->items };
50			$self->update_collection if $last < 0;
51			$self->items->[ $#{ $self->items } ];
52			}
53
54			=head2 update_collection
55
56			$o->update_collection;
57
58			=cut
59
60			sub update_collection {
61			my ( $self ) = @_;
62
63			return if $#{ $self->items } >= 0;
64
65			warn "## update_collection from iterator";
66
67	dpavlin	149	if ( ! $self->fey_class->can('collection') ) {
68			warn "ERROR: ", $self->fey_class, " can't do collection";
69			return;
70			}
71
72	dpavlin	143	my $i = $self->fey_class->collection( $self->pager );
73			while ( my $u = $i->next ) {
74			$self->add_item(
75			$self->item_constructor->(
76			fey => $u,
77			)
78			);
79			}
80			}
81
82			=head2 items_in_layout
83
84			my $html = $o->items_in_layout( $f );
85
86			=cut
87
88			sub items_in_layout {
89			my ( $self, $f ) = @_;
90
91			my $layout = delete( $f->{layout} );
92
93			# FIXME somehow, this seem cludgy
94			if ( $f->{page} ) {
95			$self->pager->current_page( $f->{page} );
96			$self->items( [] );
97			$self->update_collection;
98			}
99
100			my $html = join('', map {
101			$_->layout( $layout ) if $layout;
102			$_->process($f) \|\| ''
103			} @{ $self->items } );
104
105			return $html;
106			}
107
108			=head2 render_pager
109
110			my $html = $o->render_pager;
111
112			=cut
113
114			sub render_pager {
115			my $self = shift;
116
117			my $pager = $self->pager;
118
119	dpavlin	207	my @show_pages;
120			my $after_current = 0;
121
122			if ( $pager->current_page <= $self->range_around + 2 ) {
123			@show_pages = ( $pager->first_page .. $pager->current_page );
124			$after_current = $self->range_around - $pager->current_page;
125			} else {
126			@show_pages = ( $pager->first_page, '', $pager->current_page - $self->range_around .. $pager->current_page );
127			}
128
129			if ( $pager->current_page + $self->range_around + 1 >= $pager->last_page ) {
130			push @show_pages, ( $pager->current_page + 1 .. $pager->last_page );
131			} else {
132			push @show_pages, ( $pager->current_page + 1 .. $pager->current_page + $after_current + $self->range_around, '', $pager->last_page );
133			}
134
135			warn "## show_pages = ",dump( @show_pages );
136
137	dpavlin	143	return join( ' ',
138			qq\|<div class="notice">\|,
139			'Showing',
140			$pager->first, '-', $pager->last,
141			'of',
142			$pager->total_entries,
143			'results<br>',
144			# 'page', $pager->current_page, '/', $pager->last_page,
145			Frey::Web::Links->new(
146			name => 'page',
147			current => $pager->current_page,
148	dpavlin	207	values => \@show_pages,
149			empty => '...',
150			current_tag => 'b',
151	dpavlin	143	)->links,
152			qq\|</div>\|
153			);
154			}
155
156			1;