annotate Lib/IMPL/Web/View/TTDocument.pm @ 212:292226770180

bugfixes
author sergey
date Fri, 29 Jun 2012 19:24:15 +0400
parents 7a920771fd8e
children 5c82eec23bb6
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1 package IMPL::Web::View::TTDocument;
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2 use strict;
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3
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4 use IMPL::lang qw(:declare :constants);
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5 use IMPL::DOM::Property qw(_dom);
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6 use IMPL::Web::View::TTFactory();
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7 use IMPL::Web::View::TTControl();
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8
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9 use Scalar::Util qw(weaken);
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10
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11
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12 use parent qw(
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13 IMPL::DOM::Document
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14 IMPL::Web::View::TTControl
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15 );
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16
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17 BEGIN {
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18 public _dom property layout => PROP_ALL;
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19 public property opts => PROP_GET | PROP_OWNERSET;
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20 public property loader => PROP_ALL;
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21 public property controls => PROP_GET | PROP_OWNERSET;
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22
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23 # store the stash separately to make require() method to work correctly
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24 # even when a stash of the context is modified during the processing
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25 public property stash => PROP_GET | PROP_OWNERSET;
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26 }
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27
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28 sub CTOR {
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29 my ($this,$template,$refOpts,$loader,$vars) = @_;
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30
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31 $this->controls({});
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32 $this->loader($loader) if $loader;
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33
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34 $this->layout( $template->layout ) unless $this->layout;
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35
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36 $this->opts($refOpts);
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37 $this->stash($this->context->stash);
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38
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39 my $self = $this;
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40 weaken($self);
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41
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42 $this->templateVars('require', sub {
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43 my $doc = $self;
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44 die new IMPL::Exception("A document is destroyed or invalid") unless $doc;
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45 $doc->require(@_);
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46 });
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47
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48 $this->templateVars('document', sub { $self } );
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49 $this->InitInstance($vars);
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50 }
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51
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52 our %CTOR = (
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53 'IMPL::Web::View::TTControl' => sub {
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54 my ($template,$contextOpts) = @_;
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55 'document',
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56 $_[0], # template
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57 new Template::Context($_[1]) # context
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58 },
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59 'IMPL::DOM::Document' => sub {
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60 nodeName => 'document'
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61 }
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62 );
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63
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64 sub templateVars {
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65 my $this = shift;
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66 my $name = shift;
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67
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68 if (@_) {
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69 return $this->stash->set($name, shift);
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70 } else {
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71 return $this->stash->get($name);
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72 }
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73 }
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74
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75 sub require {
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76 my ($this, $control, $nodeProps) = @_;
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77
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78 $nodeProps ||= {};
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79 $nodeProps->{document} = $this;
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80
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81 if (my $factory = $this->controls->{$control}) {
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82 return $factory;
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83 } else {
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84
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85 my $path = $control;
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86 if ( my $template = $this->loader->template($path) ) {
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87 my $opts = { %{$this->opts} };
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88
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89 # avoid propagation of local variables
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90 $opts->{STASH} = $this->stash->clone();
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91
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92 my $ctx = new Template::Context($opts);
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93
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94 $factory = new IMPL::Web::View::TTFactory(
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95 $template->class || typeof IMPL::Web::View::TTControl,
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96 $template,
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97 $ctx,
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98 $opts
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99 );
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100
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101 my @parts = split(/\/+/,$control);
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102
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103 $this->controls->{$control} = $factory;
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104
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105 return $factory;
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106
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107 } else {
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108 die new IMPL::KeyNotFoundException($control);
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109 }
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110 }
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111 }
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112
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113 sub Render {
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114 my ($this,$args) = @_;
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115
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116 my $output;
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117
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118 if ($this->layout) {
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119 $output = $this->context->include(
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120 $this->loader->layout($this->layout),
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121 {
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122 %{$args || {}},
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123 content => sub { $output ||= $this->RenderContent($args); },
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124 this => $this,
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125 template => $this->template
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126 }
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127 );
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128 } else {
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129 return $this->RenderContent($args);
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130 }
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131
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132 return $output;
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133 }
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134
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135 sub RenderContent {
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136 my $this = shift;
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137 return $this->SUPER::Render(@_);
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138 }
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139
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140
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141 1;
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142
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143 __END__
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144
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145 =pod
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146
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147 =head1 NAME
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148
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149 C<IMPL::Web::View::TTDocument> - документ для построения HTML страницы на основе шаблонов TT.
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150
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151 =head1 SYNOPSIS
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152
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153 =begin code
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154
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155 use IMPL::Web::View::TTDocument();
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156
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157 my $doc = new IMPL::Wbe::View::TTDocument($template,$ttOptions);
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158
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159 return $doc->Render();
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160
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161 =end code
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162
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163 Однако, более предпочтительный способ использовать C<IMPL::Web::View::TTLoader>.
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164
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165 =head1 DESCRIPTION
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166
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167 Документ для представления данных. Документы представляют собой иерархически организованные данные,
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168 элементами данного документа являются данные для отображения, такие как
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169
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170 =over
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171
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172 =item * Объекты из БД
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173
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174 =item * Навигационные цепочки
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175
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176 =item * Меню и т.п.
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177
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178 =back
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179
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180 Скприт шаблона формирует структуру документа, затем сформированная структура форматируется в готовый документ.
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181 Процесс форматирования объектной модели в готовый документ может быть выполнена как вручную, так и при помощи
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182 вспомогательного шаблона - обертки. Если у шаблона документа указан C<layout> в метаданных, то он будет
181
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183 использован как шаблон для форматирования объектной модели, вывод самого шаблона будет проигнорирован. Если
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184 обертка не задана, то результатом будет вывод самого скрипта шаблона.
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185
195
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186 Использование объектной модели документа позволяет решить задачи по созданию контейнеров,
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187 у которых может быть сложное содежимое. Примером таких элементов могут быть формы,
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188 внутри форм элементы управления также могут группироваться.
192
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189
193
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190 =head2 Элементы управления (компоненты)
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191
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192 Документ состоит из узлов, часть которых наследуется от C<IMPL::Web::View::TTControl>, такие узлы называются
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193 элементами управления. Каждый элемент управления имеет собственный контекст, который наследуется от контекста
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194 документа.
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195
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196 =head2 Фабрика элементов управления
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197
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198 Для создания элементов управления используются фабрики. Каждый элемен управления имеет свой шаблон для
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199 форматиорвания содержимого, фабрика связывает шаблон и класс элемента управления, для чего при загрузке
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200 шаблона используется свойство C<type> из метаданных. Фабрика загружается в документ при том только один
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201 раз, повторные загрузки фабрики возвращают уже загруженную. Для загрузки фабрики используется метод
195
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202 C<require()> с указанием элемента управления.
190
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cin
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203
185
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204 =head2 Порядок обработки документа
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205
195
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206 Построение представления данных состоит из двух этапов
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207
185
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208 =over
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209
195
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210 =item 1 Создание объектной модели документа. На данном этапе создаются все элементы управления.
185
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211
195
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212 =item 1 Преобразование объектной модели в конечнное представление. На данном этапе происходит
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213 форматирование документа.
185
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cin
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214
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215 =back
181
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216
195
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217
181
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218 =head2 Загрузка элемента управления
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219
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220 =over
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221
194
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222 =item 1 C<TInput = require('my/org/input')>
181
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223
195
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224 =item 1 Загружается шаблон C<my/org/input.tt>
181
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225
195
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226 =item 1 Создается фабрика элементов управления с собственным контекстом, унаследованным от контекст документа.
181
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227
195
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228 =item 1 При первом создании элемента управления фабрика инициализируется выполнением блока C<INIT>.
181
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229
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230 =back
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231
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232 =head2 Создание элемента управления
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233
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234 =over
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235
194
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236 =item 1 C<< TInput.new('login') >>
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237
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238 =item 1 Создается новый дочерний контекст к контексту фабрики
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239
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240 =item 1 Создается экземпляр элемента управления
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241
195
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242 =item 1 Выполняется блок конструктора C<CTOR> в контексте элемента управления, параметр C<this> имеет значение
181
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243 нового экземпляра элемента управления
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244
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245 =back
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246
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247 =head1 MEMBERS
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248
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249 =over
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250
195
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251 =item C<CTOR($template, $contextOpts, $loader[, $vars])>
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252
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253 Создает экземпляр документа с указанным шаблоном и параметрами.
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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254
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255 =over
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256
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257 =item C<$template>
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258
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259 C<Template::Document> шаблон документа.
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260
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261 =item C<$contextOpts>
181
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262
195
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263 C<HASH> Параметры контекста C<Template::Context> для документа. Эти параметры будут сохранены
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264 в свойстве C<opts>, а также на их основе будет создан контекст текщего документа. Как правило
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265 эти параметы задаются загрузчиком документа C<IMPL::Web::View::TTLoader>, таким образом, что
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266 C<Template::Stash> создаваемого контекста наследует переменные из контекста загрузчика.
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267
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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268 =item C<$loader>
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269
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270 C<IMPL::Web::View::TTLoader> загрузчик, который будет использоваться для загрузки элементов управления,
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271 а также для получения обертки, заданной в свойстве документа C<layout>.
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272
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273 =item C<$vars>
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274
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275 C<HASH> Необязательный параметр. переменные которые будут переданы в блок конструктора C<INIT>.
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276 Как правило они используются для передачи данных для построения документа
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277
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278 =back
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279
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280 =back
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281
195
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282 =over
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283
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284 =item C<templateVars($name[,$newValue])>
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285
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286 Получает или задает переменную для шаблона документа. Имя переменнной может быть составным,
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287 например C<'my.var.name'>, см. C<Template::Stash::set()>.
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288
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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289 =item C<require($controlName)>
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290
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291 Загружает фабрику элемента управления, если она уже была загружена, возвращает на нее ссылку.
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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292 При загрузки фабрики для нее создается собственный контекст на основе параметров из свойства
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293 C<opts> и ее пространство имен наследуется от пространства имен документа из свойства C<stash>.
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294
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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295 =item C<Render($vars)>
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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296
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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297 Выполняет блок C<renderBlock> документа для получения конечного представления, C<$vars>
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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298 содержит переменные для блока.
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299
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300 =item C<RenderContent($vars)>
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cin
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301
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302 Выполняет шаблон документа для получения представления содержимого, в отличии от
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303 метода C<Render> не использует обертку указанную в свойстве C<layout>, если обертка
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304 не указана, то эти методы идентичны.
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305
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306 =item C<[get,set]layout>
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307
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308 Обертка, которая будет использована для построения представления документа. В обертке
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309 будет доступна специальная переменная C<content>, при обращении к которой будет B<выполнен>
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310 метод C<RenderContent()> и возвращен результат его работы. Для получения шаблона обертки
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311 используется загрузчик из свойства C<loader>.
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312
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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313 =item C<[get]opts>
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314
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315 Параметры контекста, используются для создания контекстов фабрик элементов управления.
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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316
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317 =item C<[get]loader>
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318
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319 Загрузчик, используется для загрузки шаблонов фабрик элементов управления и обертки.
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320
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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321 =item C<[get]controls>
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322
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323 C<HASH> Коллекция загруженных фабрик элементов управления, ключем является
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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324 квалифицированное имя элемента управления.
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325
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326 =item C<[get]stash>
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327
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328 C<Template::Stash> Пространство имен документа, оно используется как родительское
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329 для пространств имен загружаемых фабрик элементов управления.
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330
7a920771fd8e IMPL::Web::View changed document layout handling, docs, examples
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331 =back
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332
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333 =head1 TEMPLATES
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334
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335 =begin text
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336
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337 [%META layout='default'%]
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338 [% BLOCK CTOR;
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339 section('top','TOP');
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340 section('bottom','BOTTOM');
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341 section('client','CLIENT');
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342 END %]
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343 [% BLOCK TOP;
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344 TMenu = require('my/org/Menu');
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345 append(TMenu.new());
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346 END %]
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347
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348 =end
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349
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350 =cut