Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Node.pm @ 136:f6af119ac741
url routines for templates
| author | wizard |
|---|---|
| date | Fri, 25 Jun 2010 16:45:56 +0400 |
| parents | e30bdd040fe3 |
| children | e6447ad85cb4 |
| rev | line source |
|---|---|
| 49 | 1 package IMPL::DOM::Node; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 5 use base qw(IMPL::Object); | |
| 6 | |
| 7 use IMPL::Object::List; | |
| 8 use IMPL::Class::Property; | |
| 9 use IMPL::Class::Property::Direct; | |
| 10 use Scalar::Util qw(weaken); | |
| 11 | |
| 12 use IMPL::Exception; | |
| 13 | |
| 14 BEGIN { | |
| 15 public _direct property nodeName => prop_get; | |
| 16 public _direct property document => prop_get; | |
| 17 public _direct property isComplex => { get => \&_getIsComplex } ; | |
| 18 public _direct property nodeValue => prop_all; | |
| 102 | 19 public _direct property childNodes => { get => \&_getChildNodes }; # prop_list |
| 49 | 20 public _direct property parentNode => prop_get ; |
| 21 private _direct property _propertyMap => prop_all ; | |
| 116 | 22 |
| 23 __PACKAGE__->class_data(property_bind => {}); | |
| 49 | 24 } |
| 25 | |
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26 our %Axes = ( |
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27 parent => \&selectParent, |
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28 siblings => \&selectSiblings, |
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29 child => \&childNodes, |
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30 document => \&selectDocument |
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31 ); |
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32 |
| 49 | 33 sub CTOR { |
| 34 my ($this,%args) = @_; | |
| 35 | |
| 36 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required"); | |
| 37 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue}; | |
| 38 if ( exists $args{document} ) { | |
| 39 $this->{$document} = delete $args{document}; | |
| 40 weaken($this->{$document}); | |
| 41 } | |
| 42 | |
| 124 | 43 while ( my ($key,$value) = each %args ) { |
| 44 $this->nodeProperty($key,$value); | |
| 45 } | |
| 49 | 46 } |
| 47 | |
| 48 sub insertNode { | |
| 49 my ($this,$node,$pos) = @_; | |
| 50 | |
| 51 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 52 | |
| 53 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 54 | |
| 55 $this->childNodes->InsertAt($pos,$node); | |
| 56 | |
| 57 $node->_setParent( $this ); | |
| 58 | |
| 59 return $node; | |
| 60 } | |
| 61 | |
| 62 sub appendChild { | |
| 63 my ($this,$node) = @_; | |
| 64 | |
| 65 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 66 | |
| 67 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 68 | |
| 69 my $children = $this->childNodes; | |
| 70 $children->Append($node); | |
| 71 | |
| 72 $node->_setParent( $this ); | |
| 73 | |
| 74 return $node; | |
| 75 } | |
| 76 | |
| 77 sub appendNode { | |
| 78 goto &appendChild; | |
| 79 } | |
| 80 | |
| 81 sub appendRange { | |
| 82 my ($this,@range) = @_; | |
| 83 | |
| 84 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range; | |
| 85 | |
| 86 foreach my $node (@range) { | |
| 87 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 88 $node->_setParent( $this ); | |
| 89 } | |
| 90 | |
| 91 $this->childNodes->Append(@range); | |
| 92 | |
| 93 return $this; | |
| 94 } | |
| 95 | |
| 96 sub _getChildNodes { | |
| 97 my ($this) = @_; | |
| 98 | |
| 99 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes}; | |
| 102 | 100 return wantarray ? @{ $this->{$childNodes} } : $this->{$childNodes}; |
| 49 | 101 } |
| 102 | |
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103 sub childNodesRef { |
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104 my ($this) = @_; |
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105 return scalar $this->_getChildNodes; |
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106 } |
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107 |
| 49 | 108 sub removeNode { |
| 109 my ($this,$node) = @_; | |
| 110 | |
| 111 if ($this == $node->{$parentNode}) { | |
| 112 $this->childNodes->RemoveItem($node); | |
| 113 $node->_setParent(undef); | |
| 114 return $node; | |
| 115 } else { | |
| 116 die new IMPL::InvalidOperationException("The specified node isn't belong to this node"); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 sub replaceNodeAt { | |
| 121 my ($this,$index,$node) = @_; | |
| 122 | |
| 123 my $nodeOld = $this->childNodes->[$index]; | |
| 124 | |
| 125 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 126 | |
| 127 # unlink node from previous parent | |
| 128 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 129 | |
| 130 # replace (or set) old node | |
| 131 $this->childNodes->[$index] = $node; | |
| 132 | |
| 133 # set new parent | |
| 134 $node->_setParent( $this ); | |
| 135 | |
| 136 # unlink old node if we have one | |
| 137 $nodeOld->_setParent(undef) if $nodeOld; | |
| 138 | |
| 139 # return old node | |
| 140 return $nodeOld; | |
| 141 } | |
| 142 | |
| 143 sub removeAt { | |
| 144 my ($this,$pos) = @_; | |
| 145 | |
| 146 if ( my $node = $this->childNodes->RemoveAt($pos) ) { | |
| 147 $node->_setParent(undef); | |
| 148 return $node; | |
| 149 } else { | |
| 150 return undef; | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 sub removeLast { | |
| 155 my ($this) = @_; | |
| 156 | |
| 157 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) { | |
| 158 $node->_setParent(undef); | |
| 159 return $node; | |
| 160 } else { | |
| 161 return undef; | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 sub removeSelected { | |
| 166 my ($this,$query) = @_; | |
| 167 | |
| 168 my @newSet; | |
| 169 my @result; | |
| 170 | |
| 171 if (ref $query eq 'CODE') { | |
| 172 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 173 } elsif (defined $query) { | |
| 174 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 175 } else { | |
| 176 my $children = $this->childNodes; | |
| 177 $_->_setParent(undef) foreach @$children; | |
| 178 delete $this->{$childNodes}; | |
| 179 return wantarray ? @$children : $children; | |
| 180 } | |
| 181 | |
| 182 $_->_setParent(undef) foreach @result; | |
| 183 | |
| 184 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef; | |
| 185 | |
| 186 return wantarray ? @result : \@result; | |
| 187 } | |
| 188 | |
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189 sub resolveAxis { |
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190 my ($this,$axis) = @_; |
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191 return $Axes{$axis}->($this) |
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192 } |
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193 |
| 49 | 194 sub selectNodes { |
| 108 | 195 my $this = shift; |
| 122 | 196 my $path; |
| 108 | 197 |
| 122 | 198 if (@_ == 1) { |
| 199 $path = $this->translatePath($_[0]); | |
| 200 } else { | |
| 201 $path = [@_]; | |
| 202 } | |
| 108 | 203 |
| 204 my @set = ($this); | |
| 205 | |
| 122 | 206 while (@$path) { |
| 207 my $query = shift @$path; | |
| 108 | 208 @set = map $_->selectNodesAxis($query), @set; |
| 209 } | |
| 210 | |
| 211 return wantarray ? @set : \@set; | |
| 212 } | |
| 213 | |
| 113 | 214 sub selectSingleNode { |
| 215 my $this = shift; | |
| 216 my @result = $this->selectNodes(@_); | |
| 217 return $result[0]; | |
| 218 } | |
| 219 | |
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220 sub selectNodesRef { |
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221 my $this = shift; |
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222 |
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223 my @result = $this->selectNodes(@_); |
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224 return \@result; |
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225 } |
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226 |
| 108 | 227 sub translatePath { |
| 228 my ($this,$path) = @_; | |
| 229 | |
| 230 # TODO: Move path compilation here from IMPL::DOM::Schema::Validator::Compare | |
| 231 return [$path]; | |
| 232 } | |
| 233 | |
| 234 sub selectNodesAxis { | |
| 235 my ($this,$query,$axis) = @_; | |
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236 |
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237 $axis ||= 'child'; |
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238 |
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239 die new IMPL::InvalidOperationException('Unknown axis',$axis) unless exists $Axes{$axis}; |
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240 |
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241 my $nodes = $this->resolveAxis($axis); |
| 49 | 242 |
| 243 my @result; | |
| 244 | |
| 245 if (ref $query eq 'CODE') { | |
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246 @result = grep &$query($_), @{$nodes}; |
| 49 | 247 } elsif (ref $query eq 'ARRAY' ) { |
| 248 my %keys = map (($_,1),@$query); | |
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249 @result = grep $keys{$_->nodeName}, @{$nodes}; |
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250 } elsif (ref $query eq 'HASH') { |
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251 while( my ($axis,$filter) = each %$query ) { |
| 108 | 252 push @result, $this->selectNodesAxis($filter,$axis); |
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253 } |
| 49 | 254 } elsif (defined $query) { |
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255 @result = grep $_->nodeName eq $query, @{$nodes}; |
| 49 | 256 } else { |
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257 return wantarray ? @{$nodes} : $nodes; |
| 49 | 258 } |
| 259 | |
| 260 return wantarray ? @result : \@result; | |
| 261 } | |
| 262 | |
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263 sub selectParent { |
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264 my ($this) = @_; |
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265 |
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266 if ($this->parentNode) { |
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267 return wantarray ? $this->parentNode : [$this->parentNode]; |
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268 } else { |
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269 return wantarray ? () : []; |
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270 } |
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271 } |
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272 |
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273 sub selectSiblings { |
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274 my ($this) = @_; |
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275 |
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276 if ($this->parentNode) { |
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277 return $this->parentNode->selectNodes( sub { $_ != $this } ); |
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278 } else { |
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279 return wantarray ? () : []; |
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280 } |
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281 } |
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282 |
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283 sub selectDocument { |
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284 my ($this) = @_; |
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285 |
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286 if ($this->document) { |
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287 return wantarray ? $this->document : [$this->document]; |
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288 } else { |
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289 return wantarray ? () : []; |
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290 } |
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291 } |
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292 |
| 49 | 293 sub firstChild { |
| 294 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0]; | |
| 295 } | |
| 296 | |
| 297 sub _getIsComplex { | |
| 298 $_[0]->childNodes->Count ? 1 : 0; | |
| 299 } | |
| 300 | |
| 301 sub _updateDocRefs { | |
| 302 my ($this) = @_; | |
| 303 | |
| 304 # this method is called by the parent node on his children, so we need no to check parent | |
| 305 $this->{$document} = $this->{$parentNode}->document; | |
| 306 | |
| 307 # prevent cyclic | |
| 308 weaken($this->{$document}) if $this->{$document}; | |
| 309 | |
| 310 $_->_updateDocRefs foreach @{$this->{$childNodes}}; | |
| 311 } | |
| 312 | |
| 313 sub _setParent { | |
| 314 my ($this,$node) = @_; | |
| 315 | |
| 316 | |
| 317 if (($node || 0) != ($this->{$parentNode} || 0)) { | |
| 318 my $newOwner; | |
| 319 if ($node) { | |
| 320 $this->{$parentNode} = $node; | |
| 321 $newOwner = $node->document || 0; | |
| 322 | |
| 323 # prevent from creating cyclicreferences | |
| 324 weaken($this->{$parentNode}); | |
| 325 | |
| 326 } else { | |
| 327 delete $this->{$parentNode}; | |
| 75 | 328 |
| 329 #keep document | |
| 330 $newOwner = $this->{$document}; | |
| 49 | 331 } |
| 332 | |
| 333 if (($this->{$document}||0) != $newOwner) { | |
| 334 $this->{$document} = $newOwner; | |
| 335 weaken($this->{$document}) if $newOwner; | |
| 336 $_->_updateDocRefs foreach @{$this->childNodes}; | |
| 337 } | |
| 338 } | |
| 339 } | |
| 340 | |
| 341 sub text { | |
| 342 my ($this) = @_; | |
| 343 | |
| 344 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes})); | |
| 345 } | |
| 346 | |
| 347 sub nodeProperty { | |
| 348 my $this = shift; | |
| 349 my $name = shift; | |
| 350 | |
| 122 | 351 if (my $method = $this->can($name)) { |
| 352 return &$method($this,@_); | |
| 353 } | |
| 354 | |
| 49 | 355 if (@_) { |
| 122 | 356 # set |
| 357 return $this->{$_propertyMap}{$name} = shift; | |
| 358 } else { | |
| 359 return $this->{$_propertyMap}{$name}; | |
| 49 | 360 } |
| 361 } | |
| 362 | |
| 122 | 363 sub listProperties { |
| 364 my ($this) = @_; | |
| 365 | |
| 366 my %props = map {$_->Name, 1} $this->get_meta(typeof IMPL::Class::PropertyInfo, sub { $_->Attributes->{domProperty}},1); | |
| 367 | |
| 368 return (keys %props,keys %{$this->{$_propertyMap}}); | |
| 369 } | |
| 370 | |
| 49 | 371 sub qname { |
| 372 $_[0]->{$nodeName}; | |
| 373 } | |
| 374 | |
| 375 sub path { | |
| 376 my ($this) = @_; | |
| 377 | |
| 378 if ($this->parentNode) { | |
| 379 return $this->parentNode->path.'.'.$this->qname; | |
| 380 } else { | |
| 381 return $this->qname; | |
| 382 } | |
| 383 } | |
| 384 | |
| 385 1; | |
| 75 | 386 |
| 387 __END__ | |
| 388 | |
| 389 =pod | |
| 390 | |
| 391 =head1 NAME | |
| 392 | |
| 393 C<IMPL::DOM::Node> Элемент DOM модели | |
| 394 | |
| 395 =head1 DESCRIPTION | |
| 396 | |
| 397 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели. | |
| 398 | |
| 399 =head1 MEMBERS | |
| 400 | |
| 401 =head2 PROPERTIES | |
| 402 | |
| 403 =over | |
| 404 | |
| 405 =item C<[get] nodeName> | |
| 406 | |
| 407 Имя узла. Задается при создании. | |
| 408 | |
| 409 =item C<[get] document> | |
| 410 | |
| 411 Документ к которому принадлежит узел. Задается при поздании узла. | |
| 412 | |
| 413 =item C<[get] isComplex> | |
| 414 | |
| 415 Определяет является ли узел сложным (тоесть есть ли дети). | |
| 416 | |
| 417 C<true> - есть, C<false> - нет. | |
| 418 | |
| 419 =item C<[get,set] nodeValue> | |
| 420 | |
| 421 Значение узла, обычно простой скаляр, но ничто не мешает туда | |
| 422 устанавливать любое значение. | |
| 423 | |
| 424 =item C<[get,list] childNodes> | |
| 425 | |
| 426 Список детей, является списокм C<IMPL::Object::List>. | |
| 427 | |
| 428 =item C<[get] parentNode> | |
| 429 | |
| 430 Ссылка на родительский элемент, если таковой имеется. | |
| 431 | |
| 432 =head2 METHODS | |
| 433 | |
| 434 =cut |