annotate Lib/IMPL/DOM/Document.pm @ 310:0a9d51cf6dfd

*TTView: refactoring, document supports custom classes, layouts are become controls
author sergey
date Fri, 19 Apr 2013 16:39:01 +0400
parents c6d0f889ef87
children 77df11605d3a
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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 parent qw(IMPL::DOM::Node);
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7
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8 __PACKAGE__->PassThroughArgs;
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9
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10 sub document {
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11 return $_[0];
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12 }
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13
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14 sub Create {
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15 my ($this,$nodeName,$class,$refProps) = @_;
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16
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17 if ( ref $class eq 'HASH' ) {
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18 $refProps = $class;
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19 $class = undef;
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20 }
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21
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22 $class ||= typeof IMPL::DOM::Node;
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23 $refProps ||= {};
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24
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25 delete $refProps->{nodeName};
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26
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27 die new IMPL::Exception("class is not specified") unless $class;
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28 return $class->new(
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29 nodeName => $nodeName,
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30 document => $this,
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31 %$refProps
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32 );
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33 }
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34
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35 sub save {
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36 my ($this,$writer) = @_;
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37
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38 $writer->xmlDecl(undef,'yes');
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39 $this->SUPER::save($writer);
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40 $writer->end();
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41 }
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42
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43 {
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44 my $empty;
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45 sub Empty() {
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46 return $empty ? $empty : $empty = __PACKAGE__->new(nodeName => 'Empty');
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47 }
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48 }
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49
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50 1;
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51 __END__
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52
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53 =pod
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54
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55 =head1 NAME
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56
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57 C<IMPL::DOM::Document> DOM документ.
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58
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59 =head1 DESCRIPTION
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60
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61 Документ, позволяет создавать узлы определенных типов, что позволяет абстрагироваться
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62 от механизмов реального создания объектов. Т.о. например C<IMPL::DOM::Navigator::Builder>
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63 может формировать произвольные документы.
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64
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65 =head1 SYNOPSIS
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66
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67 =begin code
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68
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69 package MyDocument;
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70 use parent qw(IMPL::DOM::Document);
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71
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72 sub Create {
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73 my $this = shift;
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74 my ($name,$class,$hashProps) = @_;
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75
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76 if ($class eq 'Info') {
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77 return MyInfo->new($name,$hashProps->{date},$hashProps->{description});
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78 } else {
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79 # leave as it is
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80 return $this->SUPER::Create(@_);
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81 }
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82 }
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83
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84 =end code
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85
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86 =head1 METHODS
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87
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88 =over
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89
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90 =item C< Create($nodeName,$class,$hashProps) >
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91
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92 Реализация по умолчанию. Создает узел определеннго типа с определенным именем и свойствами.
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93
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94 =begin code
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95
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96 sub Create {
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97 my ($this,$nodeName,$class,$hashProps) = @_;
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98
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99 return $class->new (
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100 nodeName => $nodeName,
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101 document => $this,
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102 %$hashProps
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103 );
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104 }
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105
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106 =end code
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107
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108 =item C< save($writer) >
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109
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110 Сохраняет документ в виде XML узла и вызывает C<< $writer->end() >>.
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111
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112 =over
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113
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114 =item C<$writer>
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115
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116 Объект с интерфейсом C<XML::Writer> который будет использован для записи
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117 содержимого документа
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118
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119 =back
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120
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121 =back
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122
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123 =cut