Frey/ORM/Pager.pm

package Frey::ORM::Pager;
use Moose::Role;
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 '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',
        default => 1,
);

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