369
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1 package IMPL::Web::View::Metadata::FormMeta;
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2 use strict;
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3
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4 use IMPL::Const qw(:prop);
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5 use IMPL::declare {
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6 require => {
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7 Exception => 'IMPL::Exception',
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8 ArgException => '-IMPL::InvalidArgumentException',
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9 OpException => '-IMPL::InvalidOperationException',
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10 PropertyInfo => 'IMPL::Class::PropertyInfo',
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11 AbstractObject => '-IMPL::Object::Abstract'
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12 },
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13 base => [
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14 'IMPL::Web::View::Metadata::BaseMeta' => '@_'
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15 ],
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16 props => [
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17 isMultiple => PROP_RO,
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18 holdingType => PROP_RO
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19 ]
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20 };
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21
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22 use constant {
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23 Meta => __PACKAGE__
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24 };
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25
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26 sub CTOR {
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27 my ($this,$model,$type,$args) = @_;
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28
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29 $type ||= typeof($model);
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30 $args->{isMultiple} ||= $type eq 'ARRAY';
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31
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32 if ($args) {
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33 $this->$_($args->{$_}) foreach grep $args->{$_}, qw(isMultiple holdingType);
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34 }
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35 }
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36
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37 sub PopulateProperties {
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38 my ($this) = @_;
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39
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40 my %seen;
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41 my @props;
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42
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43 my $modelType = $this->modelType;
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44
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45 if ( isclass($modelType,AbstractObject) ) {
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46 foreach my $pi ($this->modelType->GetMeta(PropertyInfo, sub { not($seen{$_}++) }, 1)) {
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47 my $pv = $pi->getter->($this->model);
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48 my $pt;
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49
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50 my %args = (name => $pi->name);
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51 if ($pi->isList) {
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52 $pt = 'ARRAY';
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53 $args{isMultiple} = 1;
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54 $args{holdingType} = $pi->type;
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55 } else {
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56 $pt = $pi->type;
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57 }
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58
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59 push @props, Meta->new($pv, $pt, \%args);
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60 }
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61 } elsif ( $modelType eq 'HASH' ) {
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62 while ( my ($k,$v) = each %{$this->model || {}} ) {
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63 push @props, Meta->new($v,undef,{name => $k});
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64 }
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65 }
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66
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67 return \@props;
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68 }
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69
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70 sub GetItems {
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71 my ($this) = @_;
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72
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73 die OpException->new("The operation must be performed on the container")
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74 unless $this->isMultiple;
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75
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76 my $i = 0;
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77
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78 return [
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79 map $this->_GetItemMeta($_,$i++), @{$this->model || []}
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80 ];
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81 }
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82
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83 sub GetItem {
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84 my ($this,$index) = @_;
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85
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86 die OpException->new("The operation must be performed on the container")
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87 unless $this->isMultiple;
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88
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89 my $item = @{$this->model || []}[$index];
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90
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91 return $this->_GetItemMeta($item,$index);
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92 }
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93
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94 sub _GetItemMeta {
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95 my ($this,$item,$index) = @_;
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96
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97 return Meta->new(
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98 $item,
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99 $this->holdingType,
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100 {
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101 name => $index,
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102 container => $this
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103 }
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104 );
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105 }
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106
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107 1;
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108
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109 __END__
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