Mercurial > pub > Impl
annotate Lib/IMPL/Web/View/TTDocument.pm @ 260:2879cdb6b8cd
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| author | sergey |
|---|---|
| date | Tue, 25 Dec 2012 02:18:59 +0400 |
| parents | 7c517134c42f |
| children | 0f59b2de72af |
| rev | line source |
|---|---|
| 181 | 1 package IMPL::Web::View::TTDocument; |
| 2 use strict; | |
| 3 | |
| 236 | 4 use Scalar::Util qw(weaken); |
| 5 use IMPL::Const qw(:prop); | |
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6 use IMPL::lang qw(:hash); |
| 181 | 7 |
| 236 | 8 use IMPL::declare { |
| 9 require => { | |
| 10 TTFactory => 'IMPL::Web::View::TTFactory', | |
| 11 TTControl => 'IMPL::Web::View::TTControl', | |
| 12 Loader => 'IMPL::Code::Loader' | |
| 13 }, | |
| 14 base => [ | |
| 15 'IMPL::Web::View::TTControl' => sub { | |
| 16 my ($template,$contextOpts) = @_; | |
| 17 'document', | |
| 238 | 18 $template, # template |
| 19 Template::Context->new($contextOpts) # context | |
| 236 | 20 } |
| 21 ], | |
| 22 props => [ | |
| 23 layout => PROP_RW, | |
| 24 opts => PROP_RO, | |
| 25 loader => PROP_RW, | |
| 26 controls => PROP_RO, | |
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27 creationArgs => PROP_RO, |
| 236 | 28 |
| 29 # store the stash separately to make require() method to work correctly | |
| 30 # even when a stash of the context is modified during the processing | |
| 31 stash => PROP_RO | |
| 32 ] | |
| 33 }; | |
| 181 | 34 |
| 35 BEGIN { | |
| 236 | 36 |
| 181 | 37 } |
| 38 | |
| 39 sub CTOR { | |
| 194 | 40 my ($this,$template,$refOpts,$loader,$vars) = @_; |
| 41 | |
| 42 $this->controls({}); | |
| 43 $this->loader($loader) if $loader; | |
| 44 | |
| 45 $this->layout( $template->layout ) unless $this->layout; | |
| 46 | |
| 47 $this->opts($refOpts); | |
| 48 $this->stash($this->context->stash); | |
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49 $this->creationArgs($vars); |
| 194 | 50 |
| 51 my $self = $this; | |
| 52 weaken($self); | |
| 53 | |
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54 $this->templateVars(require => sub { |
| 194 | 55 my $doc = $self; |
| 56 die new IMPL::Exception("A document is destroyed or invalid") unless $doc; | |
| 236 | 57 $doc->RequireControl(@_); |
| 194 | 58 }); |
| 59 | |
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60 $this->templateVars(context => $vars); |
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61 |
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62 $this->templateVars(document => sub { $self } ); |
| 194 | 63 $this->InitInstance($vars); |
| 181 | 64 } |
| 65 | |
| 189 | 66 sub templateVars { |
| 194 | 67 my $this = shift; |
| 68 my $name = shift; | |
| 69 | |
| 70 if (@_) { | |
| 71 return $this->stash->set($name, shift); | |
| 72 } else { | |
| 73 return $this->stash->get($name); | |
| 74 } | |
| 189 | 75 } |
| 76 | |
| 236 | 77 sub RequireControl { |
| 194 | 78 my ($this, $control, $nodeProps) = @_; |
| 79 | |
| 80 $nodeProps ||= {}; | |
| 81 $nodeProps->{document} = $this; | |
| 82 | |
| 83 if (my $factory = $this->controls->{$control}) { | |
| 84 return $factory; | |
| 85 } else { | |
| 86 | |
| 87 my $path = $control; | |
| 88 if ( my $template = $this->loader->template($path) ) { | |
| 89 my $opts = { %{$this->opts} }; | |
| 189 | 90 |
| 245 | 91 # factory will create a clone of the stash |
| 92 # $opts->{STASH} = $this->stash->clone(); | |
| 188 | 93 |
| 194 | 94 my $ctx = new Template::Context($opts); |
| 95 | |
| 96 $factory = new IMPL::Web::View::TTFactory( | |
| 97 $template->class || typeof IMPL::Web::View::TTControl, | |
| 98 $template, | |
| 99 $ctx, | |
| 100 $opts | |
| 101 ); | |
| 102 | |
| 236 | 103 if ($template->class) { |
| 104 Loader->safe->Require($template->class); | |
| 105 } | |
| 106 | |
| 194 | 107 my @parts = split(/\/+/,$control); |
| 108 | |
| 109 $this->controls->{$control} = $factory; | |
| 110 | |
| 111 return $factory; | |
| 188 | 112 |
| 194 | 113 } else { |
| 114 die new IMPL::KeyNotFoundException($control); | |
| 115 } | |
| 116 } | |
| 181 | 117 } |
| 118 | |
| 119 sub Render { | |
| 194 | 120 my ($this,$args) = @_; |
| 121 | |
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122 $args ||= {}; |
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123 |
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124 my $newArgs = hashMerge($this->creationArgs, $args); |
| 194 | 125 |
| 126 if ($this->layout) { | |
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127 return $this->context->include( |
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128 $this->loader->layout($this->layout), |
| 194 | 129 { |
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130 %{$newArgs}, |
| 245 | 131 content => $this->RenderContent($newArgs), |
| 194 | 132 this => $this, |
| 133 template => $this->template | |
| 134 } | |
| 135 ); | |
| 136 } else { | |
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137 return $this->RenderContent($newArgs); |
| 194 | 138 } |
| 181 | 139 } |
| 140 | |
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141 sub RenderContent { |
| 194 | 142 my $this = shift; |
| 143 return $this->SUPER::Render(@_); | |
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144 } |
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145 |
| 181 | 146 1; |
| 147 | |
| 148 __END__ | |
| 149 | |
| 150 =pod | |
| 151 | |
| 152 =head1 NAME | |
| 153 | |
| 154 C<IMPL::Web::View::TTDocument> - документ для построения HTML страницы на основе шаблонов TT. | |
| 155 | |
| 156 =head1 SYNOPSIS | |
| 157 | |
| 158 =begin code | |
| 159 | |
| 160 use IMPL::Web::View::TTDocument(); | |
| 161 | |
| 162 my $doc = new IMPL::Wbe::View::TTDocument($template,$ttOptions); | |
| 163 | |
| 164 return $doc->Render(); | |
| 165 | |
| 166 =end code | |
| 167 | |
| 168 Однако, более предпочтительный способ использовать C<IMPL::Web::View::TTLoader>. | |
| 169 | |
| 170 =head1 DESCRIPTION | |
| 171 | |
| 172 Документ для представления данных. Документы представляют собой иерархически организованные данные, | |
| 173 элементами данного документа являются данные для отображения, такие как | |
| 174 | |
| 175 =over | |
| 176 | |
| 177 =item * Объекты из БД | |
| 178 | |
| 179 =item * Навигационные цепочки | |
| 180 | |
| 181 =item * Меню и т.п. | |
| 182 | |
| 183 =back | |
| 184 | |
| 185 Скприт шаблона формирует структуру документа, затем сформированная структура форматируется в готовый документ. | |
| 192 | 186 Процесс форматирования объектной модели в готовый документ может быть выполнена как вручную, так и при помощи |
| 189 | 187 вспомогательного шаблона - обертки. Если у шаблона документа указан C<layout> в метаданных, то он будет |
| 181 | 188 использован как шаблон для форматирования объектной модели, вывод самого шаблона будет проигнорирован. Если |
| 189 обертка не задана, то результатом будет вывод самого скрипта шаблона. | |
| 190 | |
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191 Использование объектной модели документа позволяет решить задачи по созданию контейнеров, |
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192 у которых может быть сложное содежимое. Примером таких элементов могут быть формы, |
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193 внутри форм элементы управления также могут группироваться. |
| 192 | 194 |
| 193 | 195 =head2 Элементы управления (компоненты) |
| 196 | |
| 197 Документ состоит из узлов, часть которых наследуется от C<IMPL::Web::View::TTControl>, такие узлы называются | |
| 198 элементами управления. Каждый элемент управления имеет собственный контекст, который наследуется от контекста | |
| 199 документа. | |
| 200 | |
| 201 =head2 Фабрика элементов управления | |
| 202 | |
| 203 Для создания элементов управления используются фабрики. Каждый элемен управления имеет свой шаблон для | |
| 204 форматиорвания содержимого, фабрика связывает шаблон и класс элемента управления, для чего при загрузке | |
| 205 шаблона используется свойство C<type> из метаданных. Фабрика загружается в документ при том только один | |
| 206 раз, повторные загрузки фабрики возвращают уже загруженную. Для загрузки фабрики используется метод | |
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207 C<require()> с указанием элемента управления. |
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208 |
| 185 | 209 =head2 Порядок обработки документа |
| 210 | |
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211 Построение представления данных состоит из двух этапов |
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212 |
| 185 | 213 =over |
| 214 | |
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215 =item 1 Создание объектной модели документа. На данном этапе создаются все элементы управления. |
| 185 | 216 |
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217 =item 1 Преобразование объектной модели в конечнное представление. На данном этапе происходит |
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218 форматирование документа. |
| 185 | 219 |
| 220 =back | |
| 181 | 221 |
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222 |
| 181 | 223 =head2 Загрузка элемента управления |
| 224 | |
| 225 =over | |
| 226 | |
| 194 | 227 =item 1 C<TInput = require('my/org/input')> |
| 181 | 228 |
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229 =item 1 Загружается шаблон C<my/org/input.tt> |
| 181 | 230 |
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231 =item 1 Создается фабрика элементов управления с собственным контекстом, унаследованным от контекст документа. |
| 181 | 232 |
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233 =item 1 При первом создании элемента управления фабрика инициализируется выполнением блока C<INIT>. |
| 181 | 234 |
| 235 =back | |
| 236 | |
| 237 =head2 Создание элемента управления | |
| 238 | |
| 239 =over | |
| 240 | |
| 194 | 241 =item 1 C<< TInput.new('login') >> |
| 181 | 242 |
| 243 =item 1 Создается новый дочерний контекст к контексту фабрики | |
| 244 | |
| 245 =item 1 Создается экземпляр элемента управления | |
| 246 | |
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247 =item 1 Выполняется блок конструктора C<CTOR> в контексте элемента управления, параметр C<this> имеет значение |
| 181 | 248 нового экземпляра элемента управления |
| 249 | |
| 250 =back | |
| 251 | |
| 252 =head1 MEMBERS | |
| 253 | |
| 254 =over | |
| 255 | |
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256 =item C<CTOR($template, $contextOpts, $loader[, $vars])> |
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257 |
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258 Создает экземпляр документа с указанным шаблоном и параметрами. |
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259 |
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260 =over |
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261 |
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262 =item C<$template> |
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263 |
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264 C<Template::Document> шаблон документа. |
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265 |
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266 =item C<$contextOpts> |
| 181 | 267 |
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268 C<HASH> Параметры контекста C<Template::Context> для документа. Эти параметры будут сохранены |
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269 в свойстве C<opts>, а также на их основе будет создан контекст текщего документа. Как правило |
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270 эти параметы задаются загрузчиком документа C<IMPL::Web::View::TTLoader>, таким образом, что |
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271 C<Template::Stash> создаваемого контекста наследует переменные из контекста загрузчика. |
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272 |
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273 =item C<$loader> |
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274 |
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275 C<IMPL::Web::View::TTLoader> загрузчик, который будет использоваться для загрузки элементов управления, |
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276 а также для получения обертки, заданной в свойстве документа C<layout>. |
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277 |
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278 =item C<$vars> |
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279 |
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280 C<HASH> Необязательный параметр. переменные которые будут переданы в блок конструктора C<INIT>. |
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281 Как правило они используются для передачи данных для построения документа |
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282 |
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283 =back |
| 181 | 284 |
| 285 =back | |
| 286 | |
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287 =over |
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288 |
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289 =item C<templateVars($name[,$newValue])> |
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290 |
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291 Получает или задает переменную для шаблона документа. Имя переменнной может быть составным, |
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292 например C<'my.var.name'>, см. C<Template::Stash::set()>. |
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293 |
| 236 | 294 =item C<RequireControl($controlName)> |
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295 |
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296 Загружает фабрику элемента управления, если она уже была загружена, возвращает на нее ссылку. |
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297 При загрузки фабрики для нее создается собственный контекст на основе параметров из свойства |
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298 C<opts> и ее пространство имен наследуется от пространства имен документа из свойства C<stash>. |
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299 |
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300 =item C<Render($vars)> |
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301 |
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302 Выполняет блок C<renderBlock> документа для получения конечного представления, C<$vars> |
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303 содержит переменные для блока. |
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304 |
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305 =item C<RenderContent($vars)> |
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306 |
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307 Выполняет шаблон документа для получения представления содержимого, в отличии от |
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308 метода C<Render> не использует обертку указанную в свойстве C<layout>, если обертка |
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309 не указана, то эти методы идентичны. |
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310 |
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311 =item C<[get,set]layout> |
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312 |
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313 Обертка, которая будет использована для построения представления документа. В обертке |
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314 будет доступна специальная переменная C<content>, при обращении к которой будет B<выполнен> |
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315 метод C<RenderContent()> и возвращен результат его работы. Для получения шаблона обертки |
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316 используется загрузчик из свойства C<loader>. |
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317 |
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318 =item C<[get]opts> |
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319 |
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320 Параметры контекста, используются для создания контекстов фабрик элементов управления. |
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321 |
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322 =item C<[get]loader> |
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323 |
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324 Загрузчик, используется для загрузки шаблонов фабрик элементов управления и обертки. |
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325 |
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326 =item C<[get]controls> |
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327 |
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328 C<HASH> Коллекция загруженных фабрик элементов управления, ключем является |
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329 квалифицированное имя элемента управления. |
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330 |
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331 =item C<[get]stash> |
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332 |
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333 C<Template::Stash> Пространство имен документа, оно используется как родительское |
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334 для пространств имен загружаемых фабрик элементов управления. |
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335 |
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336 =back |
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337 |
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338 =head1 TEMPLATES |
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339 |
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340 =begin text |
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341 |
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342 [%META layout='default'%] |
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343 [% BLOCK CTOR; |
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344 section('top','TOP'); |
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345 section('bottom','BOTTOM'); |
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346 section('client','CLIENT'); |
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347 END %] |
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348 [% BLOCK TOP; |
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349 TMenu = require('my/org/Menu'); |
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350 append(TMenu.new()); |
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351 END %] |
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352 |
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353 =end |
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354 |
| 181 | 355 =cut |