Mercurial > pub > Impl
annotate Lib/IMPL/Web/TT/Document.pm @ 154:eb478083f72b
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| author | wizard |
|---|---|
| date | Thu, 30 Sep 2010 02:13:05 +0400 |
| parents | 4369d5458bb6 |
| children | 8638dd1374bf |
| rev | line source |
|---|---|
| 77 | 1 package IMPL::Web::TT::Document; |
| 49 | 2 use strict; |
| 3 use warnings; | |
| 4 | |
| 75 | 5 use base qw(IMPL::DOM::Document IMPL::Object::Disposable); |
| 49 | 6 use Template::Context; |
| 7 use Template::Provider; | |
| 8 use IMPL::Class::Property; | |
| 9 use File::Spec; | |
| 77 | 10 use Scalar::Util qw(blessed); |
| 107 | 11 use IMPL::Web::TT::Collection; |
| 12 use IMPL::Web::TT::Control; | |
|
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13 use Carp; |
| 150 | 14 use Encode(); |
| 49 | 15 |
| 16 BEGIN { | |
| 77 | 17 private property _provider => prop_all; |
| 18 private property _context => prop_all; | |
| 134 | 19 public property cache => prop_all; |
| 77 | 20 public property template => prop_get | owner_set; |
| 21 public property presenter => prop_all, { validate => \&_validatePresenter }; | |
| 146 | 22 public property preprocess => prop_all | prop_list, |
| 154 | 23 public property title => prop_all; |
| 108 | 24 private property _controlClassMap => prop_all; |
| 49 | 25 } |
| 26 | |
| 27 our %CTOR = ( | |
| 75 | 28 'IMPL::DOM::Document' => sub { nodeName => 'document' } |
| 49 | 29 ); |
| 30 | |
| 107 | 31 sub CTOR { |
| 134 | 32 my ($this,%args) = @_; |
| 107 | 33 |
| 108 | 34 $this->_controlClassMap({}); |
| 35 $this->registerControlClass( Control => 'IMPL::Web::TT::Control' ); | |
| 36 $this->appendChild( $this->Create(body => 'IMPL::Web::TT::Collection') ); | |
| 37 $this->appendChild( $this->Create(head => 'IMPL::Web::TT::Collection') ); | |
| 134 | 38 $this->cache($args{cache}) if $args{cache}; |
| 146 | 39 $this->preprocess($args{preprocess}) if $args{preprocess}; |
| 108 | 40 } |
| 41 | |
| 42 sub CreateControl { | |
| 43 my ($this,$name,$class,$args) = @_; | |
| 44 | |
| 45 $args = {} unless ref $args eq 'HASH'; | |
| 46 | |
| 47 if (my $info = $this->_controlClassMap->{$class}) { | |
| 48 my %nodeArgs = (%{$info->{args}},%$args); | |
| 49 $nodeArgs{controlClass} = $class; | |
| 50 | |
| 51 return $this->Create($name,$info->{type},\%nodeArgs); | |
| 52 } else { | |
| 53 die new IMPL::Exception('A control is\'t registered', $class, $name); | |
| 54 } | |
| 107 | 55 } |
| 56 | |
| 77 | 57 sub provider { |
| 49 | 58 my ($this,%args) = @_; |
| 59 | |
| 77 | 60 if (my $provider = $this->_provider) { |
| 49 | 61 return $provider; |
| 62 } else { | |
| 77 | 63 return $this->_provider(new Template::Provider( |
| 49 | 64 \%args |
| 65 )); | |
| 66 } | |
| 67 } | |
| 68 | |
| 77 | 69 sub context { |
| 49 | 70 my ($this) = @_; |
| 71 | |
| 77 | 72 if (my $ctx = $this->_context) { |
| 49 | 73 return $ctx; |
| 74 } else { | |
| 77 | 75 return $this->_context ( |
| 49 | 76 new Template::Context( |
| 77 VARIABLES => { | |
| 77 | 78 document => $this, |
| 79 this => $this, | |
| 80 render => sub { | |
| 81 $this->_process(@_); | |
| 150 | 82 }, |
| 83 encode => sub { | |
| 84 Encode::encode('utf8',shift); | |
| 108 | 85 } |
| 49 | 86 }, |
| 87 RECURSION => 1, | |
| 77 | 88 LOAD_TEMPLATES => [$this->provider] |
| 49 | 89 ) |
| 90 ) | |
| 91 } | |
| 92 } | |
| 93 | |
|
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94 sub resolveVar { |
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95 my ($this,$var) = @_; |
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96 |
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97 return $this->context->stash->get($var); |
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98 } |
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99 |
| 108 | 100 sub registerControlClass { |
| 101 my ($this, $controlClass, $type, $args) = @_; | |
| 102 | |
| 103 $type ||= 'IMPL::Web::TT::Control'; | |
| 104 | |
| 105 die new IMPL::InvalidArgumentException("A controlClass must be a single word",$controlClass) unless $controlClass =~ /^\w+$/; | |
| 107 | 106 |
| 117 | 107 eval "require $type; 1;" or die new IMPL::Exception("Failed to load a module",$type,"$@") unless eval { $type->can('new') }; |
| 108 | 108 |
| 109 die new IMPL::InvalidArgumentException("A type must be subclass of IMPL::DOM::Node",$type) unless $type->isa('IMPL::DOM::Node'); | |
| 110 | |
| 146 | 111 # resolve template name to a real template |
| 112 $args->{template} = $this->context->template($args->{template}) if $args->{template}; | |
| 113 | |
| 108 | 114 $this->_controlClassMap->{$controlClass} = { |
| 115 controlClass => $controlClass, | |
| 116 type => $type, | |
| 117 args => ref $args eq 'HASH' ? $args : {} | |
| 118 }; | |
| 107 | 119 } |
| 120 | |
| 117 | 121 sub require { |
| 122 my ($this,$template) = @_; | |
| 123 | |
| 124 my $doc = $this->context->template($template); | |
| 125 | |
| 126 die new IMPL::InvalidOperationException("A specified template isn't a document",$template) unless eval{ $doc -> isa('Template::Document') }; | |
| 127 | |
| 128 my $controlClass = $doc->class; | |
| 129 my $type = $doc->nativeType; | |
| 130 my $controlTemplate; | |
| 131 my $out = ""; | |
| 132 | |
| 133 die new IMPL::InvalidOperationException("A specified template isn't a control",$template) unless $controlClass; | |
| 134 | |
| 135 if (not $this->isControlClass($controlClass)) { | |
| 136 if ($doc->template) { | |
| 137 $controlTemplate = $doc->blocks()->{$doc->template} || $this->context->template($doc->template); | |
| 146 | 138 $out = $this->context->include($doc); |
| 117 | 139 } else { |
| 140 $controlTemplate = $doc; | |
| 141 } | |
| 142 $this->registerControlClass($controlClass,$type,{ template => $controlTemplate } ); | |
| 143 } | |
| 144 | |
| 145 return $out; | |
| 146 } | |
| 147 | |
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148 sub isControlClass { |
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149 my ($this,$name) = @_; |
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150 return $this->_controlClassMap->{$name} ? 1 : 0; |
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151 } |
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152 |
| 107 | 153 sub _getControls { |
| 154 my ($this) = @_; | |
| 155 | |
| 156 my ($node) = $this->selectNodes('controls'); | |
| 157 return $node; | |
| 158 } | |
| 159 | |
| 77 | 160 sub _validatePresenter { |
| 161 my ($this,$value) = @_; | |
| 162 | |
| 163 die new IMPL::InvalidArgumentException("A view object is required") unless blessed($value) and $value->isa('Template::View'); | |
| 164 } | |
| 165 | |
| 166 sub LoadFile { | |
| 154 | 167 my ($this,$filePath,$encoding,$includes,$vars) = @_; |
| 49 | 168 |
| 169 die new IMPL::InvalidArgumentException("A filePath parameter is required") unless $filePath; | |
| 170 | |
| 171 $encoding ||= 'utf8'; | |
| 172 | |
| 77 | 173 $this->_context(undef); |
| 174 $this->_provider(undef); | |
| 49 | 175 |
| 176 my ($vol,$dir,$fileName) = File::Spec->splitpath($filePath); | |
| 177 | |
| 178 my $inc = File::Spec->catpath($vol,$dir,''); | |
| 179 | |
| 77 | 180 $this->provider( |
| 49 | 181 ENCODING => $encoding, |
| 182 INTERPOLATE => 1, | |
| 183 PRE_CHOMP => 1, | |
| 184 POST_CHOMP => 1, | |
| 146 | 185 TRIM => 0, |
| 134 | 186 COMPILE_EXT => $this->cache ? '.ttc' : undef, |
| 187 COMPILE_DIR => $this->cache, | |
| 154 | 188 INCLUDE_PATH => [$inc,ref $includes ? @$includes : $includes ] |
| 49 | 189 ); |
| 190 | |
| 154 | 191 if ($vars) { |
| 192 while ( my ($var,$val) = each %$vars ) { | |
| 193 $this->AddVar($var,$val); | |
| 194 } | |
| 195 } | |
| 196 | |
| 146 | 197 $this->context->process($_) foreach $this->preprocess; |
| 198 | |
| 154 | 199 my $template = $this->context->template($fileName); |
| 200 $this->title($template->title); | |
| 201 if ( $template->template ) { | |
| 202 $this->context->process($template); | |
| 203 $this->template($template->template); | |
| 204 } else { | |
| 205 $this->template($template); | |
| 206 } | |
| 207 | |
| 49 | 208 } |
| 209 | |
| 97 | 210 sub AddVar { |
| 211 my ($this,$name,$value) = @_; | |
| 212 | |
| 213 $this->context->stash->set($name,$value); | |
| 214 } | |
| 215 | |
| 49 | 216 sub Render { |
| 217 my ($this) = @_; | |
| 218 | |
| 154 | 219 return $this->context->process($this->template); |
| 77 | 220 } |
| 221 | |
| 222 # Формирует представление для произвольных объектов | |
| 223 sub _process { | |
| 224 my ($this,@items) = @_; | |
| 225 | |
| 226 my @result; | |
| 227 | |
| 228 foreach my $item (@items) { | |
| 229 if (blessed($item) and $item->isa('IMPL::Web::TT::Control')) { | |
| 230 push @result, $item->Render(); | |
| 231 } elsif(blessed($item)) { | |
| 232 if ($this->presenter) { | |
| 233 push @result, $this->presenter->print($item); | |
| 234 } else { | |
| 235 push @result, $this->toString; | |
| 236 } | |
| 237 } else { | |
| 238 push @result, $item; | |
| 239 } | |
| 240 } | |
| 241 | |
| 107 | 242 return join '',@result; |
| 49 | 243 } |
| 244 | |
| 108 | 245 our $AUTOLOAD; |
| 246 sub AUTOLOAD { | |
| 247 my $this = shift; | |
| 248 my ($method) = ($AUTOLOAD =~ /(\w+)$/); | |
| 249 | |
| 250 if($method =~ /^create(\w+)/) { | |
| 251 my ($name,$args) = @_; | |
| 252 return $this->CreateControl($name,$1,$args); | |
| 253 } | |
| 254 | |
| 255 my @result = $this->selectNodes($method); | |
| 256 | |
| 257 return $result[0] if @result; | |
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258 carp "Looks like you have a mistake, document doesn't have a such property or child: $method"; |
| 108 | 259 return; |
| 260 } | |
| 261 | |
| 49 | 262 sub Dispose { |
| 263 my ($this) = @_; | |
| 264 | |
| 77 | 265 $this->template(undef); |
| 266 $this->_context(undef); | |
| 267 $this->_provider(undef); | |
| 49 | 268 |
| 108 | 269 $this->supercall::Dispose(); |
| 49 | 270 } |
| 271 | |
| 272 1; | |
| 273 __END__ | |
| 274 =pod | |
| 275 | |
| 77 | 276 =head1 NAME |
| 277 | |
| 278 C<IMPL::Web::TT::Document> - Документ, позволяющий строить представление по шаблону | |
| 279 | |
| 49 | 280 =head1 SYNOPSIS |
| 281 | |
| 75 | 282 =begin code |
| 283 | |
| 49 | 284 // create new document |
| 77 | 285 my $doc = new IMPL::Web::TT::Document; |
| 49 | 286 |
| 287 // load template | |
| 288 $doc->loadFile('Templates/index.tt'); | |
| 289 | |
| 290 // render file | |
| 291 print $doc->Render(); | |
| 292 | |
| 75 | 293 =end code |
| 294 | |
| 49 | 295 =head1 DESCRIPTION |
| 296 | |
| 77 | 297 C<use base qw(IMPL::DOM::Document)> |
| 298 | |
| 49 | 299 Документ, основанный на шаблоне Template::Toolkit. Позволяет загрузить шаблон, |
| 300 и сформировать окончательный документ. Является наследником C<IMPL::DOM::Node>, | |
| 301 т.о. может быть использован для реализации DOM модели. | |
| 302 | |
| 303 Внутри шаблона переменная C<document> ссылается на объект документа. По этой | |
| 304 причине образуется циклическая ссылка между объектами шаблона и документом, что | |
| 305 требует вызова метода C<Dispose> для освобождения документа. | |
| 306 | |
| 307 =head1 METHODS | |
| 308 | |
| 77 | 309 =over |
| 49 | 310 |
| 77 | 311 =item C<CTOR()> |
| 49 | 312 |
| 77 | 313 Создает новый экземпляр документа, свойство C<nodeName> устанавливается в 'C<document>' |
| 49 | 314 |
| 77 | 315 =item C<$doc->LoadFile($fileName,$encoding)> |
| 49 | 316 |
| 317 Загружает шаблон из файла C<$fileName>, используя кодировку C<$encoding>. Если | |
| 318 кодировка не указана, использует utf-8. | |
| 319 | |
| 320 =item C<$doc->Render()> | |
| 321 | |
| 322 Возвращает данные построенные на основе загруженного шаблона. | |
| 323 | |
| 324 =item C<$doc->Dispose()> | |
| 325 | |
| 326 Освобождает ресурсы и помечает объект как освобожденный. | |
| 327 | |
| 328 =back | |
| 329 | |
| 76 | 330 =head1 DOM |
| 331 | |
| 108 | 332 Документ представляет собой DOM документ, состоящий из узлов, которые представляют собой данные |
| 333 для отображения. Для форматированого вывода используется C<template>. | |
| 334 | |
| 335 В качестве элементов документа могут присутсвовать специальные объекты C<IMPL::Web::TT::Control>, | |
| 336 которые внутри содержат шаблон для форматирования собственного содержимого. | |
| 337 | |
| 338 | |
| 339 | |
| 340 Документ предоставляет ряд фнукций для работы с элементами управления. | |
| 341 | |
| 342 =head1 TEMPLATE | |
| 343 | |
| 77 | 344 =begin code html |
| 76 | 345 |
| 108 | 346 [% CALL document.registerClass( 'Table', 'My::TableClass', template => 'tables/pretty.tt' ) %] |
| 347 [% CALL document.registerClass( 'Form' )%] | |
| 348 | |
| 349 [% table = document.сreateTable('env') %] | |
| 76 | 350 |
| 351 [% FOEACH item in document.result %] | |
| 352 [% table.rows.Add( item.get('name','value') ) %] | |
| 353 [% END %] | |
| 354 | |
| 108 | 355 [% form = document.createForm('login') %] |
| 77 | 356 [% form.template = 'LOGIN_FORM'%] |
| 357 | |
| 358 [% FOREACH item IN document.childNodes %] | |
| 359 [%render(item)%] | |
| 76 | 360 [% END %] |
| 361 | |
| 77 | 362 [% BLOCK LOGIN_FORM %] |
| 363 <form method="POST" action='/login.pl'> | |
| 364 user: [% render(this.item('name')) %] password: [% render(this.item('password')) %] <input type="submit"/> | |
| 365 </form> | |
| 366 [% END %] | |
| 76 | 367 |
| 77 | 368 =end code html |
| 76 | 369 |
| 49 | 370 =cut |