Mercurial > pub > Impl
annotate Lib/IMPL/Web/View/TTContext.pm @ 353:feeb3bc4a818
corrected error handling while loading templates
corrected variables lookup in controls
updated handles to use the new view features
| author | cin |
|---|---|
| date | Fri, 11 Oct 2013 15:49:04 +0400 |
| parents | 675cd1829255 |
| children | 9330835535b9 |
| rev | line source |
|---|---|
| 343 | 1 package IMPL::Web::View::TTContext; |
| 2 use strict; | |
| 3 use Template::Base; | |
| 348 | 4 use Carp qw(carp); |
| 349 | 5 use File::Spec(); |
| 6 use IMPL::Resources::Format qw(FormatMessage); | |
| 7 use IMPL::Resources::Strings(); | |
| 343 | 8 |
| 348 | 9 use IMPL::Exception(); |
| 349 | 10 use IMPL::lang qw(is typeof hashApply hashMerge); |
| 343 | 11 use IMPL::declare { |
| 348 | 12 require => { |
| 13 Document => '-Template::Document', | |
| 14 TypeKeyedCollection => 'IMPL::TypeKeyedCollection', | |
| 349 | 15 ArgException => '-IMPL::InvalidArgumentException', |
| 352 | 16 Resources => 'IMPL::Resources', |
| 17 Loader => 'IMPL::Code::Loader' | |
| 348 | 18 }, |
| 19 base => [ | |
| 343 | 20 'Template::Context' => '@_' |
| 348 | 21 ] |
| 343 | 22 }; |
| 23 | |
| 347 | 24 BEGIN { |
| 348 | 25 no strict 'refs'; |
| 347 | 26 foreach my $prop (qw( |
| 348 | 27 root |
| 347 | 28 base |
| 29 tt_ext | |
| 348 | 30 tt_cache |
| 347 | 31 parent |
| 32 prefix | |
| 348 | 33 cache |
| 34 includes | |
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35 modules |
| 352 | 36 aliases |
| 347 | 37 )) { |
| 38 my $t = $prop; | |
| 39 | |
| 348 | 40 *{__PACKAGE__ . '::' . $prop} = sub { |
| 347 | 41 my $this = shift; |
| 42 return @_ ? $this->stash->set($t, @_) : $this->stash->get($t); | |
| 43 } | |
| 44 } | |
| 45 } | |
| 46 | |
| 343 | 47 sub clone { |
| 48 my $this = shift; | |
| 347 | 49 my $params = shift; |
| 343 | 50 |
| 51 $this->localise(); | |
| 52 | |
| 53 my $args = { %{$this} }; | |
| 54 | |
| 55 $this->delocalise(); | |
| 56 | |
| 348 | 57 my $class = ref($this); |
| 343 | 58 |
| 59 delete $args->{CONFIG}; | |
| 60 | |
| 347 | 61 my $clone = $class->new($args); |
| 62 | |
| 63 $clone->stash->update($params) if $params; | |
| 64 | |
| 65 return $clone; | |
| 345 | 66 } |
| 67 | |
| 68 sub find_template { | |
| 348 | 69 my ($this,$name) = @_; |
| 70 | |
| 71 my $cache = $this->tt_cache; | |
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72 |
| 348 | 73 $this->tt_cache($cache = {}) unless $cache; |
| 345 | 74 |
| 348 | 75 if(my $tpl = $cache->{$name}) { |
| 76 return $tpl; | |
| 77 } | |
| 78 | |
| 79 my @inc = ($this->base, @{$this->includes || []}); | |
| 80 | |
| 345 | 81 my $ext = $this->tt_ext || ""; |
| 348 | 82 |
| 83 my $file; | |
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84 |
| 345 | 85 foreach my $dir (@inc) { |
| 348 | 86 $file = $dir ? "$dir/$name" : $name; |
| 87 | |
| 88 my $base = join('/',splice([split(/\/+/,$file)],0,-1)); | |
| 89 | |
| 90 $file = $ext ? "$file.$ext" : $file; | |
| 91 | |
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92 if (exists($this->modules->{$file})) { |
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93 my $info = $this->modules->{$file}; |
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94 return $cache->{$name} = $info |
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95 if $info; |
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96 } else { |
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97 if( my $tt = eval { $this->template($file) } ) { |
| 352 | 98 my $class; |
| 99 if ($class = $tt->class) { | |
| 100 $class = $this->aliases->{$class} || $class; | |
| 101 Loader->safe->Require($class); | |
| 102 } | |
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103 my $info = { |
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104 base => $base, |
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105 labels => $this->load_labels($file), |
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106 template => $tt, |
| 352 | 107 initialized => 0, |
| 108 class => $class | |
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109 }; |
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110 $this->modules->{$file} = $info; |
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111 return $cache->{$name} = $info; |
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112 } else { |
| 353 | 113 my $err = $@; |
| 114 | |
| 115 for(my $t = $err; is($t,'Template::Exception'); $t = $t->info ) { | |
| 116 die $err unless $t->type eq Template::Constants::ERROR_FILE; | |
| 117 } | |
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118 $this->modules->{$file} = undef; |
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119 } |
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120 } |
| 345 | 121 } |
| 122 | |
| 123 $this->throw(Template::Constants::ERROR_FILE, "$name: not found"); | |
| 124 } | |
| 125 | |
| 347 | 126 sub display { |
| 127 my $this = shift; | |
| 128 my $model = shift; | |
| 348 | 129 my ($template, $args); |
| 347 | 130 |
| 131 if (ref $_[0] eq 'HASH') { | |
| 132 $args = shift; | |
| 133 } else { | |
| 134 $template = shift; | |
| 135 $args = shift; | |
| 136 } | |
| 137 | |
| 348 | 138 my $prefix = $this->prefix; |
| 139 | |
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140 if (not(($args and delete $args->{_no_resolve}) or ref $model)) { |
| 348 | 141 $prefix = $prefix ? "${prefix}.${model}" : $model; |
| 142 $model = $this->resolve_model($model); | |
| 143 } else { | |
| 144 $prefix = ""; | |
| 145 } | |
| 146 | |
| 147 $template = $template ? $this->find_template($template) : $this->find_template_for($model); | |
| 148 | |
| 149 return $this->render( | |
| 150 $template, | |
| 151 hashApply( | |
| 152 { | |
| 153 prefix => $prefix, | |
| 154 model => $model, | |
| 155 }, | |
| 156 $args | |
| 157 ) | |
| 158 ); | |
| 159 } | |
| 160 | |
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161 sub display_model { |
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162 my $this = shift; |
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163 my $model = shift; |
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164 my ($template, $args); |
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165 |
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166 if (ref $_[0] eq 'HASH') { |
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167 $args = shift; |
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168 } else { |
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169 $template = shift; |
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170 $args = shift; |
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171 } |
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172 |
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173 $args ||= {}; |
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174 |
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175 my $prefix = delete $args->{prefix} || $this->prefix; |
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176 |
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177 if (my $rel = delete $args->{rel}) { |
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178 $prefix = $prefix ? "${prefix}.${rel}" : $rel; |
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179 } |
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180 |
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181 $template = $template ? $this->find_template($template) : $this->find_template_for($model); |
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182 |
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183 return $this->render( |
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184 $template, |
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185 hashApply( |
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186 { |
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187 prefix => $prefix, |
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188 model => $model, |
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189 }, |
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190 $args |
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191 ) |
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192 ); |
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193 } |
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194 |
| 348 | 195 sub invoke_environment { |
| 196 my ($this,$code,$env) = @_; | |
| 197 | |
| 198 $env ||= {}; | |
| 199 | |
| 200 my $out = eval { | |
| 201 $this->localise( | |
| 202 hashApply( | |
| 203 { | |
| 352 | 204 aliases => $this->aliases || {}, |
| 348 | 205 root => $this->root || $this, |
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206 modules => $this->modules || {}, |
| 348 | 207 cache => TypeKeyedCollection->new(), |
| 208 display => sub { | |
| 209 $this->display(@_); | |
| 210 }, | |
| 211 render => sub { | |
| 212 $this->render(@_); | |
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213 }, |
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214 display_model => sub { |
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215 $this->display_model(@_); |
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216 }, |
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217 tt_cache => {} |
| 348 | 218 }, |
| 219 $env | |
| 220 ) | |
| 221 ); | |
| 222 | |
| 223 &$code($this); | |
| 224 }; | |
| 225 | |
| 226 my $e = $@; | |
| 227 $this->delocalise(); | |
| 228 | |
| 229 die $e if $e; | |
| 230 | |
| 231 return $out; | |
| 232 } | |
| 233 | |
| 234 sub render { | |
| 235 my ($this,$template,$args) = @_; | |
| 236 | |
| 237 $args ||= {}; | |
| 238 | |
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239 my $info = ref $template ? $template : $this->find_template($template); |
| 348 | 240 |
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241 if (ref($info) ne 'HASH') { |
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242 carp "got an invalid template object: $info (" . ref($info) . ")"; |
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243 $info = { |
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244 template => $info, |
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245 base => $this->base, |
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246 initialized => 1 |
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247 }; |
| 348 | 248 } |
| 249 | |
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250 return $this->invoke_environment( |
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251 sub { |
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252 my $ctx = shift; |
| 352 | 253 |
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254 unless($info->{initialized}) { |
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255 if(my $init = $info->{template}->blocks->{INIT}) { |
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256 $info->{initialized} = 1; |
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257 eval { |
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258 $ctx->visit($info->{template}->blocks); |
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259 $ctx->include($init); |
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260 }; |
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261 $ctx->leave(); |
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262 } |
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263 } |
| 352 | 264 |
| 265 if (my $class = $info->{class}) { | |
| 266 $class->new($this,$info->{template})->Render($args); | |
| 267 } else { | |
| 268 return $ctx->include($info->{template},$args); | |
| 269 } | |
| 348 | 270 }, |
| 349 | 271 hashMerge( |
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272 $info->{labels} || {}, |
| 349 | 273 { |
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274 base => $info->{base}, |
| 349 | 275 parent => $this |
| 276 } | |
| 277 ) | |
| 348 | 278 ) |
| 279 } | |
| 280 | |
| 281 sub resolve_model { | |
| 282 my ($this,$prefix) = @_; | |
| 283 | |
| 284 die ArgException->new(prefix => "the prefix must be specified") | |
| 285 unless defined $prefix; | |
| 286 | |
| 287 #TODO handle DOM models | |
| 288 | |
| 289 my @comp = map { $_, 0 } grep length($_), split(/\.|\[(\d+)\]/, $prefix); | |
| 347 | 290 |
| 348 | 291 return $this->stash->get(['model',0,@comp]); |
| 292 } | |
| 293 | |
| 294 sub find_template_for { | |
| 295 my ($this,$model) = @_; | |
| 347 | 296 |
| 348 | 297 my $type = typeof($model); |
| 347 | 298 |
| 348 | 299 return $this->find_template('templates/plain') unless $type; |
| 300 | |
| 301 if (my $template = $this->cache->Get($type)) { | |
| 302 return $template; | |
| 303 } else { | |
| 304 | |
| 305 no strict 'refs'; | |
| 306 | |
| 307 my @isa = $type; | |
| 308 | |
| 309 while (@isa) { | |
| 310 my $sclass = shift @isa; | |
| 311 | |
| 312 (my $name = $sclass) =~ s/:+/_/g; | |
| 313 | |
| 314 $template = $this->find_template("templates/$name"); | |
| 315 | |
| 316 if ($template) { | |
| 317 $this->cache->Set($sclass,$template); | |
| 318 return $template; | |
| 319 } | |
| 320 | |
| 321 push @isa, @{"${sclass}::ISA"}; | |
| 322 } | |
| 323 | |
| 324 } | |
| 325 | |
| 326 return; | |
| 347 | 327 } |
| 328 | |
| 349 | 329 sub get_real_file { |
| 330 my ($this,$fname) = @_; | |
| 331 | |
| 332 my @path = split(/\/+/,$fname); | |
| 333 | |
| 334 foreach my $provider (@{$this->load_templates || []}) { | |
| 335 foreach my $dir (@{$provider->paths || []}) { | |
| 336 my $realName = File::Spec->catfile($dir,@path); | |
| 337 return $realName if -f $realName; | |
| 338 } | |
| 339 } | |
| 340 } | |
| 341 | |
| 342 sub load_labels { | |
| 343 my ($this,$fname) = @_; | |
| 344 | |
| 345 $fname = $this->get_real_file($fname); | |
| 346 | |
| 347 my %vars; | |
| 348 | |
| 349 my $flabels = "$fname.labels"; | |
| 350 | |
| 351 if (-f $flabels) { | |
| 352 | |
| 353 my %labels; | |
| 354 $labels{default} = IMPL::Resources::Strings::ParseStringsMap($flabels); | |
| 355 | |
| 356 while(my($label,$text) = each %{$labels{default}}) { | |
| 357 $vars{$label} = sub { | |
| 358 my ($params) = @_; | |
| 359 my $locale = Resources->currentLocale; | |
| 360 | |
| 361 unless ($labels{$locale}) { | |
| 362 $labels{$locale} = -f "$fname.$locale" ? | |
| 363 IMPL::Resources::Strings::ParseStringsMap("$fname.$locale") : | |
| 364 {}; | |
| 365 } | |
| 366 | |
| 367 return FormatMessage(($labels{$locale}{$label} || $text),$params); | |
| 368 } | |
| 369 } | |
| 370 } | |
| 371 | |
| 372 return \%vars; | |
| 373 } | |
| 374 | |
| 345 | 375 1; |
| 376 | |
| 377 __END__ | |
| 378 | |
| 379 =pod | |
| 380 | |
| 381 =head1 NAME | |
| 382 | |
| 383 C<IMPL::Web::View::TTContext> - доработанная версия контекста | |
| 384 | |
| 385 =head1 DESCRIPTION | |
| 386 | |
| 387 Расширяет функции C<Template::Context> | |
| 388 | |
| 389 =begin plantuml | |
| 390 | |
| 391 @startuml | |
| 392 | |
| 348 | 393 object RootContext { |
| 345 | 394 document |
| 346 | 395 globals |
| 345 | 396 } |
| 397 | |
| 398 object DocumentContext { | |
| 346 | 399 base |
| 400 extends | |
| 401 } | |
| 402 | |
| 403 object ControlContext { | |
| 404 base | |
| 405 extends | |
| 345 | 406 } |
| 407 | |
| 348 | 408 RootContext o-- DocumentContext |
| 409 RootContext o-- ControlContext | |
| 345 | 410 |
| 346 | 411 Document -- DocumentContext |
| 412 Control - ControlContext | |
| 345 | 413 |
| 348 | 414 Loader . RootContext: <<creates>> |
| 346 | 415 Loader . Document: <<creates>> |
| 416 Loader -up- Registry | |
| 345 | 417 |
| 418 @enduml | |
| 419 | |
| 420 =end plantuml | |
| 421 | |
| 422 =head1 MEMBERS | |
| 423 | |
| 424 =head2 C<[get,set]base> | |
| 425 | |
| 426 Префикс пути для поиска шаблонов | |
| 427 | |
| 428 =head2 C<template($name)> | |
| 429 | |
| 430 Сначала пытается загрузить шаблон используя префикс C<base>, затем без префикса. | |
| 431 | |
| 432 =head2 C<clone()> | |
| 433 | |
| 434 Создает копию контекста, при этом C<stash> локализуется, таким образом | |
| 435 клонированный контекст имеет собственное пространство имен, вложенное в | |
| 436 пространство родительского контекста. | |
| 437 | |
| 438 =cut |
