Mercurial > pub > Impl
annotate Lib/IMPL/Web/TT/Document.pm @ 142:4c9849f0f879
minor changes
| author | wizard |
|---|---|
| date | Wed, 07 Jul 2010 17:30:40 +0400 |
| parents | f6af119ac741 |
| children | bd10093bb122 |
| 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; |
| 49 | 14 |
| 15 BEGIN { | |
| 77 | 16 private property _provider => prop_all; |
| 17 private property _context => prop_all; | |
| 134 | 18 public property cache => prop_all; |
| 77 | 19 public property template => prop_get | owner_set; |
| 20 public property presenter => prop_all, { validate => \&_validatePresenter }; | |
| 108 | 21 private property _controlClassMap => prop_all; |
| 49 | 22 } |
| 23 | |
| 24 our %CTOR = ( | |
| 75 | 25 'IMPL::DOM::Document' => sub { nodeName => 'document' } |
| 49 | 26 ); |
| 27 | |
| 107 | 28 sub CTOR { |
| 134 | 29 my ($this,%args) = @_; |
| 107 | 30 |
| 108 | 31 $this->_controlClassMap({}); |
| 32 $this->registerControlClass( Control => 'IMPL::Web::TT::Control' ); | |
| 33 $this->appendChild( $this->Create(body => 'IMPL::Web::TT::Collection') ); | |
| 34 $this->appendChild( $this->Create(head => 'IMPL::Web::TT::Collection') ); | |
| 134 | 35 $this->cache($args{cache}) if $args{cache}; |
| 108 | 36 } |
| 37 | |
| 38 sub CreateControl { | |
| 39 my ($this,$name,$class,$args) = @_; | |
| 40 | |
| 41 $args = {} unless ref $args eq 'HASH'; | |
| 42 | |
| 43 if (my $info = $this->_controlClassMap->{$class}) { | |
| 44 my %nodeArgs = (%{$info->{args}},%$args); | |
| 45 $nodeArgs{controlClass} = $class; | |
| 46 | |
| 47 return $this->Create($name,$info->{type},\%nodeArgs); | |
| 48 } else { | |
| 49 die new IMPL::Exception('A control is\'t registered', $class, $name); | |
| 50 } | |
| 107 | 51 } |
| 52 | |
| 77 | 53 sub provider { |
| 49 | 54 my ($this,%args) = @_; |
| 55 | |
| 77 | 56 if (my $provider = $this->_provider) { |
| 49 | 57 return $provider; |
| 58 } else { | |
| 77 | 59 return $this->_provider(new Template::Provider( |
| 49 | 60 \%args |
| 61 )); | |
| 62 } | |
| 63 } | |
| 64 | |
| 77 | 65 sub context { |
| 49 | 66 my ($this) = @_; |
| 67 | |
| 77 | 68 if (my $ctx = $this->_context) { |
| 49 | 69 return $ctx; |
| 70 } else { | |
| 77 | 71 return $this->_context ( |
| 49 | 72 new Template::Context( |
| 73 VARIABLES => { | |
| 77 | 74 document => $this, |
| 75 this => $this, | |
| 76 render => sub { | |
| 77 $this->_process(@_); | |
| 108 | 78 } |
| 49 | 79 }, |
| 80 TRIM => 1, | |
| 81 RECURSION => 1, | |
| 77 | 82 LOAD_TEMPLATES => [$this->provider] |
| 49 | 83 ) |
| 84 ) | |
| 85 } | |
| 86 } | |
| 87 | |
|
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88 sub resolveVar { |
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89 my ($this,$var) = @_; |
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90 |
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91 return $this->context->stash->get($var); |
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92 } |
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93 |
| 108 | 94 sub registerControlClass { |
| 95 my ($this, $controlClass, $type, $args) = @_; | |
| 96 | |
| 97 $type ||= 'IMPL::Web::TT::Control'; | |
| 98 | |
| 99 die new IMPL::InvalidArgumentException("A controlClass must be a single word",$controlClass) unless $controlClass =~ /^\w+$/; | |
| 107 | 100 |
| 117 | 101 eval "require $type; 1;" or die new IMPL::Exception("Failed to load a module",$type,"$@") unless eval { $type->can('new') }; |
| 108 | 102 |
| 103 die new IMPL::InvalidArgumentException("A type must be subclass of IMPL::DOM::Node",$type) unless $type->isa('IMPL::DOM::Node'); | |
| 104 | |
| 105 $this->_controlClassMap->{$controlClass} = { | |
| 106 controlClass => $controlClass, | |
| 107 type => $type, | |
| 108 args => ref $args eq 'HASH' ? $args : {} | |
| 109 }; | |
| 107 | 110 } |
| 111 | |
| 117 | 112 sub require { |
| 113 my ($this,$template) = @_; | |
| 114 | |
| 115 my $doc = $this->context->template($template); | |
| 116 | |
| 117 die new IMPL::InvalidOperationException("A specified template isn't a document",$template) unless eval{ $doc -> isa('Template::Document') }; | |
| 118 | |
| 119 my $controlClass = $doc->class; | |
| 120 my $type = $doc->nativeType; | |
| 121 my $controlTemplate; | |
| 122 my $out = ""; | |
| 123 | |
| 124 die new IMPL::InvalidOperationException("A specified template isn't a control",$template) unless $controlClass; | |
| 125 | |
| 126 if (not $this->isControlClass($controlClass)) { | |
| 127 if ($doc->template) { | |
| 128 $controlTemplate = $doc->blocks()->{$doc->template} || $this->context->template($doc->template); | |
| 129 $out = $this->context->process($doc); | |
| 130 } else { | |
| 131 $controlTemplate = $doc; | |
| 132 } | |
| 133 $this->registerControlClass($controlClass,$type,{ template => $controlTemplate } ); | |
| 134 } | |
| 135 | |
| 136 return $out; | |
| 137 } | |
| 138 | |
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139 sub isControlClass { |
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140 my ($this,$name) = @_; |
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141 return $this->_controlClassMap->{$name} ? 1 : 0; |
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142 } |
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143 |
| 107 | 144 sub _getControls { |
| 145 my ($this) = @_; | |
| 146 | |
| 147 my ($node) = $this->selectNodes('controls'); | |
| 148 return $node; | |
| 149 } | |
| 150 | |
| 77 | 151 sub _validatePresenter { |
| 152 my ($this,$value) = @_; | |
| 153 | |
| 154 die new IMPL::InvalidArgumentException("A view object is required") unless blessed($value) and $value->isa('Template::View'); | |
| 155 } | |
| 156 | |
| 157 sub LoadFile { | |
| 121 | 158 my ($this,$filePath,$encoding,@includes) = @_; |
| 49 | 159 |
| 160 die new IMPL::InvalidArgumentException("A filePath parameter is required") unless $filePath; | |
| 161 | |
| 162 $encoding ||= 'utf8'; | |
| 163 | |
| 77 | 164 $this->_context(undef); |
| 165 $this->_provider(undef); | |
| 49 | 166 |
| 167 my ($vol,$dir,$fileName) = File::Spec->splitpath($filePath); | |
| 168 | |
| 169 my $inc = File::Spec->catpath($vol,$dir,''); | |
| 170 | |
| 77 | 171 $this->provider( |
| 49 | 172 ENCODING => $encoding, |
| 173 INTERPOLATE => 1, | |
| 174 PRE_CHOMP => 1, | |
| 175 POST_CHOMP => 1, | |
| 134 | 176 COMPILE_EXT => $this->cache ? '.ttc' : undef, |
| 177 COMPILE_DIR => $this->cache, | |
| 121 | 178 INCLUDE_PATH => [$inc,@includes] |
| 49 | 179 ); |
| 180 | |
| 77 | 181 $this->template($this->context->template($fileName)); |
| 49 | 182 } |
| 183 | |
| 97 | 184 sub AddVar { |
| 185 my ($this,$name,$value) = @_; | |
| 186 | |
| 187 $this->context->stash->set($name,$value); | |
| 188 } | |
| 189 | |
| 77 | 190 sub title { |
| 191 $_[0]->template->title; | |
| 49 | 192 } |
| 193 | |
| 194 sub Render { | |
| 195 my ($this) = @_; | |
| 196 | |
| 77 | 197 return $this->template->process($this->context); |
| 198 } | |
| 199 | |
| 200 # Формирует представление для произвольных объектов | |
| 201 sub _process { | |
| 202 my ($this,@items) = @_; | |
| 203 | |
| 204 my @result; | |
| 205 | |
| 206 foreach my $item (@items) { | |
| 207 if (blessed($item) and $item->isa('IMPL::Web::TT::Control')) { | |
| 208 push @result, $item->Render(); | |
| 209 } elsif(blessed($item)) { | |
| 210 if ($this->presenter) { | |
| 211 push @result, $this->presenter->print($item); | |
| 212 } else { | |
| 213 push @result, $this->toString; | |
| 214 } | |
| 215 } else { | |
| 216 push @result, $item; | |
| 217 } | |
| 218 } | |
| 219 | |
| 107 | 220 return join '',@result; |
| 49 | 221 } |
| 222 | |
| 108 | 223 our $AUTOLOAD; |
| 224 sub AUTOLOAD { | |
| 225 my $this = shift; | |
| 226 my ($method) = ($AUTOLOAD =~ /(\w+)$/); | |
| 227 | |
| 228 if($method =~ /^create(\w+)/) { | |
| 229 my ($name,$args) = @_; | |
| 230 return $this->CreateControl($name,$1,$args); | |
| 231 } | |
| 232 | |
| 233 my @result = $this->selectNodes($method); | |
| 234 | |
| 235 return $result[0] if @result; | |
|
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236 carp "Looks like you have a mistake, document doesn't have a such property or child: $method"; |
| 108 | 237 return; |
| 238 } | |
| 239 | |
| 240 sub as_list { | |
| 241 $_[0]->childNodes; | |
| 242 } | |
| 243 | |
| 49 | 244 sub Dispose { |
| 245 my ($this) = @_; | |
| 246 | |
| 77 | 247 $this->template(undef); |
| 248 $this->_context(undef); | |
| 249 $this->_provider(undef); | |
| 49 | 250 |
| 108 | 251 $this->supercall::Dispose(); |
| 49 | 252 } |
| 253 | |
| 254 1; | |
| 255 __END__ | |
| 256 =pod | |
| 257 | |
| 77 | 258 =head1 NAME |
| 259 | |
| 260 C<IMPL::Web::TT::Document> - Документ, позволяющий строить представление по шаблону | |
| 261 | |
| 49 | 262 =head1 SYNOPSIS |
| 263 | |
| 75 | 264 =begin code |
| 265 | |
| 49 | 266 // create new document |
| 77 | 267 my $doc = new IMPL::Web::TT::Document; |
| 49 | 268 |
| 269 // load template | |
| 270 $doc->loadFile('Templates/index.tt'); | |
| 271 | |
| 272 // render file | |
| 273 print $doc->Render(); | |
| 274 | |
| 75 | 275 =end code |
| 276 | |
| 49 | 277 =head1 DESCRIPTION |
| 278 | |
| 77 | 279 C<use base qw(IMPL::DOM::Document)> |
| 280 | |
| 49 | 281 Документ, основанный на шаблоне Template::Toolkit. Позволяет загрузить шаблон, |
| 282 и сформировать окончательный документ. Является наследником C<IMPL::DOM::Node>, | |
| 283 т.о. может быть использован для реализации DOM модели. | |
| 284 | |
| 285 Внутри шаблона переменная C<document> ссылается на объект документа. По этой | |
| 286 причине образуется циклическая ссылка между объектами шаблона и документом, что | |
| 287 требует вызова метода C<Dispose> для освобождения документа. | |
| 288 | |
| 289 =head1 METHODS | |
| 290 | |
| 77 | 291 =over |
| 49 | 292 |
| 77 | 293 =item C<CTOR()> |
| 49 | 294 |
| 77 | 295 Создает новый экземпляр документа, свойство C<nodeName> устанавливается в 'C<document>' |
| 49 | 296 |
| 77 | 297 =item C<$doc->LoadFile($fileName,$encoding)> |
| 49 | 298 |
| 299 Загружает шаблон из файла C<$fileName>, используя кодировку C<$encoding>. Если | |
| 300 кодировка не указана, использует utf-8. | |
| 301 | |
| 302 =item C<$doc->Render()> | |
| 303 | |
| 304 Возвращает данные построенные на основе загруженного шаблона. | |
| 305 | |
| 306 =item C<$doc->Dispose()> | |
| 307 | |
| 308 Освобождает ресурсы и помечает объект как освобожденный. | |
| 309 | |
| 310 =back | |
| 311 | |
| 76 | 312 =head1 DOM |
| 313 | |
| 108 | 314 Документ представляет собой DOM документ, состоящий из узлов, которые представляют собой данные |
| 315 для отображения. Для форматированого вывода используется C<template>. | |
| 316 | |
| 317 В качестве элементов документа могут присутсвовать специальные объекты C<IMPL::Web::TT::Control>, | |
| 318 которые внутри содержат шаблон для форматирования собственного содержимого. | |
| 319 | |
| 320 | |
| 321 | |
| 322 Документ предоставляет ряд фнукций для работы с элементами управления. | |
| 323 | |
| 324 =head1 TEMPLATE | |
| 325 | |
| 77 | 326 =begin code html |
| 76 | 327 |
| 108 | 328 [% CALL document.registerClass( 'Table', 'My::TableClass', template => 'tables/pretty.tt' ) %] |
| 329 [% CALL document.registerClass( 'Form' )%] | |
| 330 | |
| 331 [% table = document.сreateTable('env') %] | |
| 76 | 332 |
| 333 [% FOEACH item in document.result %] | |
| 334 [% table.rows.Add( item.get('name','value') ) %] | |
| 335 [% END %] | |
| 336 | |
| 108 | 337 [% form = document.createForm('login') %] |
| 77 | 338 [% form.template = 'LOGIN_FORM'%] |
| 339 | |
| 340 [% FOREACH item IN document.childNodes %] | |
| 341 [%render(item)%] | |
| 76 | 342 [% END %] |
| 343 | |
| 77 | 344 [% BLOCK LOGIN_FORM %] |
| 345 <form method="POST" action='/login.pl'> | |
| 346 user: [% render(this.item('name')) %] password: [% render(this.item('password')) %] <input type="submit"/> | |
| 347 </form> | |
| 348 [% END %] | |
| 76 | 349 |
| 77 | 350 =end code html |
| 76 | 351 |
| 49 | 352 =cut |