annotate Lib/IMPL/DOM/Document.pm @ 353:feeb3bc4a818

corrected error handling while loading templates corrected variables lookup in controls updated handles to use the new view features
author cin
date Fri, 11 Oct 2013 15:49:04 +0400
parents 77df11605d3a
children 010ceafd0c5a
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1 package IMPL::DOM::Document;
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2 use strict;
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3 use warnings;
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4
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5 use IMPL::lang;
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6 use IMPL::declare {
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7 require => {
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8 DOMNode => 'IMPL::DOM::Node'
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9 },
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10 base => [
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11 DOMNode => '@_'
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12 ]
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13 };
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14
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15 sub document {
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16 return $_[0];
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17 }
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18
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19 sub Create {
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20 my ($this,$nodeName,$class,$refProps) = @_;
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21
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22 if ( ref $class eq 'HASH' ) {
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23 $refProps = $class;
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24 $class = undef;
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25 }
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26
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27 $class ||= DOMNode;
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28 $refProps ||= {};
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29
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30 delete $refProps->{nodeName};
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31
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32 die new IMPL::Exception("class is not specified") unless $class;
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33 return $class->new(
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34 nodeName => $nodeName,
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35 document => $this,
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36 %$refProps
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37 );
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38 }
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39
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40 sub save {
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41 my ($this,$writer) = @_;
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42
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43 $writer->xmlDecl(undef,'yes');
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44 $this->SUPER::save($writer);
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45 $writer->end();
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46 }
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47
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48 {
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49 my $empty;
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50 sub Empty() {
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51 return $empty ? $empty : $empty = __PACKAGE__->new(nodeName => 'Empty');
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52 }
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53 }
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54
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55 1;
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56 __END__
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57
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58 =pod
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59
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60 =head1 NAME
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61
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62 C<IMPL::DOM::Document> DOM документ.
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63
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64 =head1 DESCRIPTION
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65
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66 Документ, позволяет создавать узлы определенных типов, что позволяет абстрагироваться
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67 от механизмов реального создания объектов. Т.о. например C<IMPL::DOM::Navigator::Builder>
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68 может формировать произвольные документы.
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69
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70 =head1 SYNOPSIS
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71
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72 =begin code
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73
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74 package MyDocument;
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75 use parent qw(IMPL::DOM::Document);
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76
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77 sub Create {
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78 my $this = shift;
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79 my ($name,$class,$hashProps) = @_;
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80
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81 if ($class eq 'Info') {
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82 return MyInfo->new($name,$hashProps->{date},$hashProps->{description});
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83 } else {
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84 # leave as it is
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85 return $this->SUPER::Create(@_);
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86 }
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87 }
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88
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89 =end code
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90
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91 =head1 METHODS
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92
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93 =over
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94
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95 =item C< Create($nodeName,$class,$hashProps) >
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96
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97 Реализация по умолчанию. Создает узел определеннго типа с определенным именем и свойствами.
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98
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99 =begin code
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100
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101 sub Create {
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102 my ($this,$nodeName,$class,$hashProps) = @_;
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103
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104 return $class->new (
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105 nodeName => $nodeName,
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106 document => $this,
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107 %$hashProps
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108 );
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109 }
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110
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111 =end code
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112
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113 =item C< save($writer) >
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114
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115 Сохраняет документ в виде XML узла и вызывает C<< $writer->end() >>.
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116
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117 =over
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118
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119 =item C<$writer>
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120
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121 Объект с интерфейсом C<XML::Writer> который будет использован для записи
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122 содержимого документа
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123
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124 =back
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125
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126 =back
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127
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128 =cut