Mercurial > pub > Impl
annotate Lib/IMPL/Web/View/TTLoader.pm @ 310:0a9d51cf6dfd
*TTView: refactoring, document supports custom classes, layouts are become controls
| author | sergey |
|---|---|
| date | Fri, 19 Apr 2013 16:39:01 +0400 |
| parents | 5e4e7c8fbca1 |
| children | d3b5a67ad2e8 |
| rev | line source |
|---|---|
| 181 | 1 package IMPL::Web::View::TTLoader; |
| 2 use strict; | |
| 3 | |
| 4 use Template::Constants qw(:status); | |
| 5 | |
| 265 | 6 use IMPL::Const qw(:prop); |
| 7 use IMPL::declare { | |
| 8 require => { | |
| 9 Provider => 'Template::Provider', | |
| 10 Context => 'Template::Context', | |
| 309 | 11 TTRegistry => 'IMPL::Web::View::TTRegistry', |
| 308 | 12 TTFactory => 'IMPL::Web::View::TTFactory', |
| 309 | 13 TTDocument => '-IMPL::Web::View::TTDocument', |
| 265 | 14 Exception => 'IMPL::Exception', |
| 15 ArgumentException => '-IMPL::InvalidArgumentException', | |
| 16 KeyNotFoundException => '-IMPL::KeyNotFoundException' | |
| 17 }, | |
| 18 base => [ | |
| 19 'IMPL::Object' => undef, | |
| 20 'IMPL::Object::Serializable' => undef | |
| 21 ], | |
| 22 props => [ | |
| 23 options => PROP_RO, | |
| 24 provider => PROP_RO, | |
| 25 context => PROP_RO, | |
| 26 ext => PROP_RO, | |
| 27 layoutBase => PROP_RO, | |
| 28 isInitialized => PROP_RO, | |
| 29 initializer => PROP_RO, | |
| 30 _globals => PROP_RW | |
| 31 ] | |
| 32 }; | |
| 181 | 33 |
| 196 | 34 sub save { |
| 35 my ($this,$context) = @_; | |
| 36 | |
| 37 $context->AddVar($_, $this->$_()) for qw(options provider context ext layoutBase); | |
| 38 } | |
| 39 | |
| 40 sub restore { | |
| 41 my ($class,$data,$surrogate) = @_; | |
| 42 | |
| 43 my %params = @$data; | |
| 44 | |
| 45 my $refOpts = delete $params{options}; | |
| 46 | |
| 47 if ($surrogate){ | |
| 48 $surrogate->callCTOR($refOpts,%params); | |
| 49 } else { | |
| 50 $surrogate = $class->new($refOpts,%params); | |
| 51 } | |
| 206 | 52 return $surrogate; |
| 196 | 53 } |
| 54 | |
| 181 | 55 sub CTOR { |
| 194 | 56 my ($this,$refOpts,%args) = @_; |
| 57 | |
| 58 $refOpts ||= {}; | |
| 59 | |
| 60 $this->ext($args{ext}) if $args{ext}; | |
| 61 $this->initializer($args{initializer}) if $args{initializer}; | |
| 62 $this->_globals(ref $args{globals} eq 'HASH' ? $args{globals} : {}); | |
| 63 | |
| 64 $this->options($refOpts); | |
|
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65 $this->layoutBase($args{layoutBase}) if $args{layoutBase}; |
| 194 | 66 |
| 67 # to aviod cyclic references we need to do a copy of $refOpts | |
| 265 | 68 $refOpts->{LOAD_TEMPLATES} = $this->provider(Provider->new( { %$refOpts } )); |
| 194 | 69 |
| 265 | 70 $this->context(Context->new($refOpts)); |
| 181 | 71 } |
| 72 | |
| 73 sub document { | |
| 194 | 74 my ($this,$name,$vars) = @_; |
| 75 | |
| 309 | 76 $vars ||= {}; |
| 308 | 77 |
| 194 | 78 my $tt = $this->template($name); |
| 79 | |
| 80 $this->_init(); | |
| 81 | |
| 82 my $opts = { %{ $this->options } }; | |
| 83 | |
| 287 | 84 $this->context->localise(); |
| 289 | 85 my $ctx = _clone_context($this->context); |
| 287 | 86 $this->context->delocalise(); |
| 194 | 87 |
| 309 | 88 my $registry = TTRegistry->new($this, $ctx); |
| 89 | |
| 90 my $factory = TTFactory->new($tt->class || TTDocument, $tt, $ctx, $name, $registry); | |
| 308 | 91 |
| 309 | 92 $vars->{registry} = $registry; |
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93 $vars->{layoutBase} = $this->layoutBase; |
| 309 | 94 |
| 95 return $factory->new( $vars ); | |
| 181 | 96 } |
| 97 | |
| 308 | 98 |
| 181 | 99 sub template { |
| 194 | 100 my ($this,$name) = @_; |
| 101 | |
| 102 $name =~ s/^\s+|\s+$//g; | |
| 103 | |
| 265 | 104 die ArgumentException->new("A valid template name is required") unless length $name; |
| 194 | 105 |
| 106 $name = $this->_appendExt($name); | |
| 107 | |
| 108 my ($tt,$error) = $this->provider->fetch($name); | |
| 109 | |
| 110 if (defined $error and $error == STATUS_DECLINED) { | |
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111 die KeyNotFoundException->new($name); |
| 194 | 112 } elsif (defined $error and $error == STATUS_ERROR) { |
| 265 | 113 die Exception->new("Failed to load a template", $name, $tt); |
| 194 | 114 } |
| 115 | |
| 116 return $tt; | |
| 181 | 117 } |
| 118 | |
| 119 sub _appendExt { | |
| 194 | 120 my ($this,$name) = @_; |
| 121 | |
| 122 return $name unless $this->ext; | |
| 123 | |
| 124 if (length $this->ext and substr( $name, -length($this->ext) ) eq $this->ext) { | |
| 125 return $name; | |
| 126 } else { | |
| 127 return $name . $this->ext; | |
| 128 } | |
| 181 | 129 } |
| 130 | |
| 131 sub _init { | |
| 194 | 132 my ($this) = @_; |
| 133 | |
| 134 if (!$this->isInitialized) { | |
| 135 my $initializer = $this->initializer || sub {}; | |
| 136 | |
| 137 eval { | |
| 138 $this->context->process($initializer,$this->_globals); | |
| 139 }; | |
| 140 if (my $e = $@) { | |
| 265 | 141 die Exception->new("Failed to process an initializer", $this->initializer, $e); |
| 194 | 142 } |
| 143 | |
| 144 $this->isInitialized(1); | |
| 145 } | |
| 181 | 146 } |
| 147 | |
| 289 | 148 sub _clone_context { |
| 149 my $args = { %{shift || {}} }; | |
| 150 delete $args->{CONFIG}; | |
| 151 | |
| 152 return Template::Context->new($args); | |
| 153 } | |
| 154 | |
| 181 | 155 1; |
| 156 | |
| 157 __END__ | |
| 158 | |
| 159 =pod | |
| 160 | |
| 161 =head1 NAME | |
| 162 | |
| 163 C<IMPL::Web::View::TTLoader> - предоставляет глобальный контекст для загрузки шаблонов | |
| 164 | |
| 165 =head1 SYNOPSIS | |
| 166 | |
| 167 =begin code | |
| 168 | |
| 169 use IMPL::Web::View::TTLoader(); | |
| 170 | |
| 171 my $loader = new IMPL::Web::View::TTLoader( | |
| 194 | 172 { |
| 173 INCLUDE_PATH => [ | |
| 174 '/my/app/tt', | |
| 175 '/my/app/tt/lib' | |
| 176 ] | |
| 177 }, | |
| 178 ext => '.tt', | |
| 179 initializer => 'shared/global' | |
| 180 | |
| 181 | 181 ); |
| 182 | |
| 183 my $doc = $loader->document('index'); | |
| 184 | |
| 185 my $html = $doc->Render(); | |
| 186 | |
| 187 =end code | |
| 188 | |
| 189 =head1 DESCRIPTION | |
| 190 | |
| 265 | 191 Провайдер для загрузки шаблонов и документов. Имеет собственное пространство |
| 192 имен, контекст выполнения шаблонов. Контект загрузчика инициализируется | |
| 193 шаблоном, в котором определяются глобальные переменные, которые будут доступны | |
| 194 в документах, однако их изменения будут локализованы. | |
| 195 | |
| 196 Инициализация контекста провайдера происходит при первой загрузке любого | |
| 197 документа. | |
| 198 | |
| 182 | 199 =head1 MEMBERS |
| 200 | |
| 265 | 201 =head2 C<CTOR($options,%args)> |
| 202 | |
| 203 =over | |
| 204 | |
| 205 =item * C<$options> | |
| 206 | |
| 207 Параметры контекста загрузчика, контексты документов и элементов управления | |
| 208 также унаследуют эти свойства. Напрямую передаются в конструктор | |
| 209 C<Template::Context>. | |
| 210 | |
| 211 =item * C<%args> | |
| 212 | |
| 213 Именованные параметы загрузчика. | |
| 214 | |
| 215 =over | |
| 216 | |
| 217 =item * C<ext> | |
| 218 | |
| 219 Расширение, которое будет добавляться к именам шаблонов и документов (если оно | |
| 220 не будет указано явно). | |
| 221 | |
| 222 =item * C<initializer> | |
| 223 | |
| 224 Имя шаблона, который будет использован для инициализации контекста. | |
| 225 | |
| 226 =item * C<globals> | |
| 227 | |
| 228 Глобальные переменнын, которые будут переданы в контекст. | |
| 229 | |
| 230 =item * C<layoutBase> | |
| 231 | |
| 232 Путь к шаблонам для оформления документов. Каждый документ может задавать свой | |
| 233 C<layout> указанный в его C<META> блоке или конструкторе. | |
| 234 См. C<IMPL::View::TTDocument>. | |
| 235 | |
| 236 =back | |
| 237 | |
| 238 =back | |
| 239 | |
| 182 | 240 =head2 C<document($docName)> |
| 241 | |
| 265 | 242 Загружает документ с именем C<$docName>. При необходимости к нему будет |
| 243 добавлено расширение, указанное в свойстве C<ext>. Это единственно полезный | |
| 244 метод провайдера. | |
| 245 | |
| 181 | 246 =cut |
| 247 |