Mercurial > pub > Impl
annotate Lib/IMPL/Web/TT/Document.pm @ 112:0ed8e2541b1c
Form processing mechanism
| author | wizard |
|---|---|
| date | Tue, 18 May 2010 17:59:31 +0400 |
| parents | ddf0f037d460 |
| children | 0475eb382085 |
| 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; | |
| 18 public property template => prop_get | owner_set; | |
| 19 public property presenter => prop_all, { validate => \&_validatePresenter }; | |
| 108 | 20 private property _controlClassMap => prop_all; |
| 49 | 21 } |
| 22 | |
| 23 our %CTOR = ( | |
| 75 | 24 'IMPL::DOM::Document' => sub { nodeName => 'document' } |
| 49 | 25 ); |
| 26 | |
| 107 | 27 sub CTOR { |
| 28 my ($this) = @_; | |
| 29 | |
| 108 | 30 $this->_controlClassMap({}); |
| 31 $this->registerControlClass( Control => 'IMPL::Web::TT::Control' ); | |
| 32 $this->appendChild( $this->Create(body => 'IMPL::Web::TT::Collection') ); | |
| 33 $this->appendChild( $this->Create(head => 'IMPL::Web::TT::Collection') ); | |
| 34 } | |
| 35 | |
| 36 sub CreateControl { | |
| 37 my ($this,$name,$class,$args) = @_; | |
| 38 | |
| 39 $args = {} unless ref $args eq 'HASH'; | |
| 40 | |
| 41 if (my $info = $this->_controlClassMap->{$class}) { | |
| 42 my %nodeArgs = (%{$info->{args}},%$args); | |
| 43 $nodeArgs{controlClass} = $class; | |
| 44 | |
| 45 return $this->Create($name,$info->{type},\%nodeArgs); | |
| 46 } else { | |
| 47 die new IMPL::Exception('A control is\'t registered', $class, $name); | |
| 48 } | |
| 107 | 49 } |
| 50 | |
| 77 | 51 sub provider { |
| 49 | 52 my ($this,%args) = @_; |
| 53 | |
| 77 | 54 if (my $provider = $this->_provider) { |
| 49 | 55 return $provider; |
| 56 } else { | |
| 77 | 57 return $this->_provider(new Template::Provider( |
| 49 | 58 \%args |
| 59 )); | |
| 60 } | |
| 61 } | |
| 62 | |
| 77 | 63 sub context { |
| 49 | 64 my ($this) = @_; |
| 65 | |
| 77 | 66 if (my $ctx = $this->_context) { |
| 49 | 67 return $ctx; |
| 68 } else { | |
| 77 | 69 return $this->_context ( |
| 49 | 70 new Template::Context( |
| 71 VARIABLES => { | |
| 77 | 72 document => $this, |
| 73 this => $this, | |
| 74 render => sub { | |
| 75 $this->_process(@_); | |
| 108 | 76 } |
| 49 | 77 }, |
| 78 TRIM => 1, | |
| 79 RECURSION => 1, | |
| 77 | 80 LOAD_TEMPLATES => [$this->provider] |
| 49 | 81 ) |
| 82 ) | |
| 83 } | |
| 84 } | |
| 85 | |
| 108 | 86 sub registerControlClass { |
| 87 my ($this, $controlClass, $type, $args) = @_; | |
| 88 | |
| 89 $type ||= 'IMPL::Web::TT::Control'; | |
| 90 | |
| 91 die new IMPL::InvalidArgumentException("A controlClass must be a single word",$controlClass) unless $controlClass =~ /^\w+$/; | |
| 107 | 92 |
| 108 | 93 eval "require $type; 1;" or die new IMPL::Exception("Failed to load a module",$type,"$@") unless ref $type or $INC{$type}; |
| 94 | |
| 95 die new IMPL::InvalidArgumentException("A type must be subclass of IMPL::DOM::Node",$type) unless $type->isa('IMPL::DOM::Node'); | |
| 96 | |
| 97 $this->_controlClassMap->{$controlClass} = { | |
| 98 controlClass => $controlClass, | |
| 99 type => $type, | |
| 100 args => ref $args eq 'HASH' ? $args : {} | |
| 101 }; | |
| 107 | 102 } |
| 103 | |
|
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104 sub isControlClass { |
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ddf0f037d460
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105 my ($this,$name) = @_; |
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106 return $this->_controlClassMap->{$name} ? 1 : 0; |
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ddf0f037d460
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wizard
parents:
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diff
changeset
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107 } |
|
ddf0f037d460
IMPL::DOM::Node updated to support TT, (added childNodesRef and selectNodesRef for using from TT)
wizard
parents:
108
diff
changeset
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108 |
| 107 | 109 sub _getControls { |
| 110 my ($this) = @_; | |
| 111 | |
| 112 my ($node) = $this->selectNodes('controls'); | |
| 113 return $node; | |
| 114 } | |
| 115 | |
| 77 | 116 sub _validatePresenter { |
| 117 my ($this,$value) = @_; | |
| 118 | |
| 119 die new IMPL::InvalidArgumentException("A view object is required") unless blessed($value) and $value->isa('Template::View'); | |
| 120 } | |
| 121 | |
| 122 sub LoadFile { | |
| 49 | 123 my ($this,$filePath,$encoding) = @_; |
| 124 | |
| 125 die new IMPL::InvalidArgumentException("A filePath parameter is required") unless $filePath; | |
| 126 | |
| 127 $encoding ||= 'utf8'; | |
| 128 | |
| 77 | 129 $this->_context(undef); |
| 130 $this->_provider(undef); | |
| 49 | 131 |
| 132 my ($vol,$dir,$fileName) = File::Spec->splitpath($filePath); | |
| 133 | |
| 134 my $inc = File::Spec->catpath($vol,$dir,''); | |
| 135 | |
| 77 | 136 $this->provider( |
| 49 | 137 ENCODING => $encoding, |
| 138 INTERPOLATE => 1, | |
| 139 PRE_CHOMP => 1, | |
| 140 POST_CHOMP => 1, | |
| 141 INCLUDE_PATH => $inc | |
| 142 ); | |
| 143 | |
| 77 | 144 $this->template($this->context->template($fileName)); |
| 49 | 145 } |
| 146 | |
| 97 | 147 sub AddVar { |
| 148 my ($this,$name,$value) = @_; | |
| 149 | |
| 150 $this->context->stash->set($name,$value); | |
| 151 } | |
| 152 | |
| 77 | 153 sub title { |
| 154 $_[0]->template->title; | |
| 49 | 155 } |
| 156 | |
| 157 sub Render { | |
| 158 my ($this) = @_; | |
| 159 | |
| 77 | 160 return $this->template->process($this->context); |
| 161 } | |
| 162 | |
| 163 # Формирует представление для произвольных объектов | |
| 164 sub _process { | |
| 165 my ($this,@items) = @_; | |
| 166 | |
| 167 my @result; | |
| 168 | |
| 169 foreach my $item (@items) { | |
| 170 if (blessed($item) and $item->isa('IMPL::Web::TT::Control')) { | |
| 171 push @result, $item->Render(); | |
| 172 } elsif(blessed($item)) { | |
| 173 if ($this->presenter) { | |
| 174 push @result, $this->presenter->print($item); | |
| 175 } else { | |
| 176 push @result, $this->toString; | |
| 177 } | |
| 178 } else { | |
| 179 push @result, $item; | |
| 180 } | |
| 181 } | |
| 182 | |
| 107 | 183 return join '',@result; |
| 49 | 184 } |
| 185 | |
| 108 | 186 our $AUTOLOAD; |
| 187 sub AUTOLOAD { | |
| 188 my $this = shift; | |
| 189 my ($method) = ($AUTOLOAD =~ /(\w+)$/); | |
| 190 | |
| 191 if($method =~ /^create(\w+)/) { | |
| 192 my ($name,$args) = @_; | |
| 193 return $this->CreateControl($name,$1,$args); | |
| 194 } | |
| 195 | |
| 196 my @result = $this->selectNodes($method); | |
| 197 | |
| 198 return $result[0] if @result; | |
|
109
ddf0f037d460
IMPL::DOM::Node updated to support TT, (added childNodesRef and selectNodesRef for using from TT)
wizard
parents:
108
diff
changeset
|
199 carp "Looks like you have a mistake, document doesn't have a such property or child: $method"; |
| 108 | 200 return; |
| 201 } | |
| 202 | |
| 203 sub as_list { | |
| 204 $_[0]->childNodes; | |
| 205 } | |
| 206 | |
| 49 | 207 sub Dispose { |
| 208 my ($this) = @_; | |
| 209 | |
| 77 | 210 $this->template(undef); |
| 211 $this->_context(undef); | |
| 212 $this->_provider(undef); | |
| 49 | 213 |
| 108 | 214 $this->supercall::Dispose(); |
| 49 | 215 } |
| 216 | |
| 217 1; | |
| 218 __END__ | |
| 219 =pod | |
| 220 | |
| 77 | 221 =head1 NAME |
| 222 | |
| 223 C<IMPL::Web::TT::Document> - Документ, позволяющий строить представление по шаблону | |
| 224 | |
| 49 | 225 =head1 SYNOPSIS |
| 226 | |
| 75 | 227 =begin code |
| 228 | |
| 49 | 229 // create new document |
| 77 | 230 my $doc = new IMPL::Web::TT::Document; |
| 49 | 231 |
| 232 // load template | |
| 233 $doc->loadFile('Templates/index.tt'); | |
| 234 | |
| 235 // render file | |
| 236 print $doc->Render(); | |
| 237 | |
| 75 | 238 =end code |
| 239 | |
| 49 | 240 =head1 DESCRIPTION |
| 241 | |
| 77 | 242 C<use base qw(IMPL::DOM::Document)> |
| 243 | |
| 49 | 244 Документ, основанный на шаблоне Template::Toolkit. Позволяет загрузить шаблон, |
| 245 и сформировать окончательный документ. Является наследником C<IMPL::DOM::Node>, | |
| 246 т.о. может быть использован для реализации DOM модели. | |
| 247 | |
| 248 Внутри шаблона переменная C<document> ссылается на объект документа. По этой | |
| 249 причине образуется циклическая ссылка между объектами шаблона и документом, что | |
| 250 требует вызова метода C<Dispose> для освобождения документа. | |
| 251 | |
| 252 =head1 METHODS | |
| 253 | |
| 77 | 254 =over |
| 49 | 255 |
| 77 | 256 =item C<CTOR()> |
| 49 | 257 |
| 77 | 258 Создает новый экземпляр документа, свойство C<nodeName> устанавливается в 'C<document>' |
| 49 | 259 |
| 77 | 260 =item C<$doc->LoadFile($fileName,$encoding)> |
| 49 | 261 |
| 262 Загружает шаблон из файла C<$fileName>, используя кодировку C<$encoding>. Если | |
| 263 кодировка не указана, использует utf-8. | |
| 264 | |
| 265 =item C<$doc->Render()> | |
| 266 | |
| 267 Возвращает данные построенные на основе загруженного шаблона. | |
| 268 | |
| 269 =item C<$doc->Dispose()> | |
| 270 | |
| 271 Освобождает ресурсы и помечает объект как освобожденный. | |
| 272 | |
| 273 =back | |
| 274 | |
| 76 | 275 =head1 DOM |
| 276 | |
| 108 | 277 Документ представляет собой DOM документ, состоящий из узлов, которые представляют собой данные |
| 278 для отображения. Для форматированого вывода используется C<template>. | |
| 279 | |
| 280 В качестве элементов документа могут присутсвовать специальные объекты C<IMPL::Web::TT::Control>, | |
| 281 которые внутри содержат шаблон для форматирования собственного содержимого. | |
| 282 | |
| 283 | |
| 284 | |
| 285 Документ предоставляет ряд фнукций для работы с элементами управления. | |
| 286 | |
| 287 =head1 TEMPLATE | |
| 288 | |
| 77 | 289 =begin code html |
| 76 | 290 |
| 108 | 291 [% CALL document.registerClass( 'Table', 'My::TableClass', template => 'tables/pretty.tt' ) %] |
| 292 [% CALL document.registerClass( 'Form' )%] | |
| 293 | |
| 294 [% table = document.сreateTable('env') %] | |
| 76 | 295 |
| 296 [% FOEACH item in document.result %] | |
| 297 [% table.rows.Add( item.get('name','value') ) %] | |
| 298 [% END %] | |
| 299 | |
| 108 | 300 [% form = document.createForm('login') %] |
| 77 | 301 [% form.template = 'LOGIN_FORM'%] |
| 302 | |
| 303 [% FOREACH item IN document.childNodes %] | |
| 304 [%render(item)%] | |
| 76 | 305 [% END %] |
| 306 | |
| 77 | 307 [% BLOCK LOGIN_FORM %] |
| 308 <form method="POST" action='/login.pl'> | |
| 309 user: [% render(this.item('name')) %] password: [% render(this.item('password')) %] <input type="submit"/> | |
| 310 </form> | |
| 311 [% END %] | |
| 76 | 312 |
| 77 | 313 =end code html |
| 76 | 314 |
| 49 | 315 =cut |