Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Node.pm @ 149:b04e978d6d5a
minor changes
| author | wizard |
|---|---|
| date | Wed, 18 Aug 2010 03:14:57 +0400 |
| parents | e6447ad85cb4 |
| children | 1e7f03414b65 |
| 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 |
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20 public _direct property parentNode => prop_get | owner_set; |
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21 public _direct property schema => prop_get | owner_set; |
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22 public _direct property schemaSource => prop_get | owner_set; |
| 49 | 23 private _direct property _propertyMap => prop_all ; |
| 116 | 24 |
| 25 __PACKAGE__->class_data(property_bind => {}); | |
| 49 | 26 } |
| 27 | |
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28 our %Axes = ( |
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29 parent => \&selectParent, |
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30 siblings => \&selectSiblings, |
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31 child => \&childNodes, |
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32 document => \&selectDocument, |
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33 ancestor => \&selectAncestors, |
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34 descendant => \&selectDescendant |
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35 ); |
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36 |
| 49 | 37 sub CTOR { |
| 38 my ($this,%args) = @_; | |
| 39 | |
| 40 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required"); | |
| 41 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue}; | |
| 42 if ( exists $args{document} ) { | |
| 43 $this->{$document} = delete $args{document}; | |
| 44 weaken($this->{$document}); | |
| 45 } | |
| 46 | |
| 124 | 47 while ( my ($key,$value) = each %args ) { |
| 48 $this->nodeProperty($key,$value); | |
| 49 } | |
| 49 | 50 } |
| 51 | |
| 52 sub insertNode { | |
| 53 my ($this,$node,$pos) = @_; | |
| 54 | |
| 55 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 56 | |
| 57 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 58 | |
| 59 $this->childNodes->InsertAt($pos,$node); | |
| 60 | |
| 61 $node->_setParent( $this ); | |
| 62 | |
| 63 return $node; | |
| 64 } | |
| 65 | |
| 66 sub appendChild { | |
| 67 my ($this,$node) = @_; | |
| 68 | |
| 69 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 70 | |
| 71 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 72 | |
| 73 my $children = $this->childNodes; | |
| 74 $children->Append($node); | |
| 75 | |
| 76 $node->_setParent( $this ); | |
| 77 | |
| 78 return $node; | |
| 79 } | |
| 80 | |
| 81 sub appendNode { | |
| 82 goto &appendChild; | |
| 83 } | |
| 84 | |
| 85 sub appendRange { | |
| 86 my ($this,@range) = @_; | |
| 87 | |
| 88 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range; | |
| 89 | |
| 90 foreach my $node (@range) { | |
| 91 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 92 $node->_setParent( $this ); | |
| 93 } | |
| 94 | |
| 95 $this->childNodes->Append(@range); | |
| 96 | |
| 97 return $this; | |
| 98 } | |
| 99 | |
| 100 sub _getChildNodes { | |
| 101 my ($this) = @_; | |
| 102 | |
| 103 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes}; | |
| 102 | 104 return wantarray ? @{ $this->{$childNodes} } : $this->{$childNodes}; |
| 49 | 105 } |
| 106 | |
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107 sub childNodesRef { |
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108 my ($this) = @_; |
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109 return scalar $this->_getChildNodes; |
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110 } |
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111 |
| 49 | 112 sub removeNode { |
| 113 my ($this,$node) = @_; | |
| 114 | |
| 115 if ($this == $node->{$parentNode}) { | |
| 116 $this->childNodes->RemoveItem($node); | |
| 117 $node->_setParent(undef); | |
| 118 return $node; | |
| 119 } else { | |
| 120 die new IMPL::InvalidOperationException("The specified node isn't belong to this node"); | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 sub replaceNodeAt { | |
| 125 my ($this,$index,$node) = @_; | |
| 126 | |
| 127 my $nodeOld = $this->childNodes->[$index]; | |
| 128 | |
| 129 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 130 | |
| 131 # unlink node from previous parent | |
| 132 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 133 | |
| 134 # replace (or set) old node | |
| 135 $this->childNodes->[$index] = $node; | |
| 136 | |
| 137 # set new parent | |
| 138 $node->_setParent( $this ); | |
| 139 | |
| 140 # unlink old node if we have one | |
| 141 $nodeOld->_setParent(undef) if $nodeOld; | |
| 142 | |
| 143 # return old node | |
| 144 return $nodeOld; | |
| 145 } | |
| 146 | |
| 147 sub removeAt { | |
| 148 my ($this,$pos) = @_; | |
| 149 | |
| 150 if ( my $node = $this->childNodes->RemoveAt($pos) ) { | |
| 151 $node->_setParent(undef); | |
| 152 return $node; | |
| 153 } else { | |
| 154 return undef; | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 sub removeLast { | |
| 159 my ($this) = @_; | |
| 160 | |
| 161 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) { | |
| 162 $node->_setParent(undef); | |
| 163 return $node; | |
| 164 } else { | |
| 165 return undef; | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 sub removeSelected { | |
| 170 my ($this,$query) = @_; | |
| 171 | |
| 172 my @newSet; | |
| 173 my @result; | |
| 174 | |
| 175 if (ref $query eq 'CODE') { | |
| 176 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 177 } elsif (defined $query) { | |
| 178 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 179 } else { | |
| 180 my $children = $this->childNodes; | |
| 181 $_->_setParent(undef) foreach @$children; | |
| 182 delete $this->{$childNodes}; | |
| 183 return wantarray ? @$children : $children; | |
| 184 } | |
| 185 | |
| 186 $_->_setParent(undef) foreach @result; | |
| 187 | |
| 188 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef; | |
| 189 | |
| 190 return wantarray ? @result : \@result; | |
| 191 } | |
| 192 | |
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193 sub resolveAxis { |
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194 my ($this,$axis) = @_; |
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195 return $Axes{$axis}->($this) |
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196 } |
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197 |
| 49 | 198 sub selectNodes { |
| 108 | 199 my $this = shift; |
| 122 | 200 my $path; |
| 108 | 201 |
| 122 | 202 if (@_ == 1) { |
| 203 $path = $this->translatePath($_[0]); | |
| 204 } else { | |
| 205 $path = [@_]; | |
| 206 } | |
| 108 | 207 |
| 208 my @set = ($this); | |
| 209 | |
| 122 | 210 while (@$path) { |
| 211 my $query = shift @$path; | |
| 108 | 212 @set = map $_->selectNodesAxis($query), @set; |
| 213 } | |
| 214 | |
| 215 return wantarray ? @set : \@set; | |
| 216 } | |
| 217 | |
| 113 | 218 sub selectSingleNode { |
| 219 my $this = shift; | |
| 220 my @result = $this->selectNodes(@_); | |
| 221 return $result[0]; | |
| 222 } | |
| 223 | |
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224 sub selectNodesRef { |
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225 my $this = shift; |
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226 |
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227 my @result = $this->selectNodes(@_); |
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228 return \@result; |
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229 } |
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230 |
| 108 | 231 sub translatePath { |
| 232 my ($this,$path) = @_; | |
| 233 | |
| 234 # TODO: Move path compilation here from IMPL::DOM::Schema::Validator::Compare | |
| 235 return [$path]; | |
| 236 } | |
| 237 | |
| 238 sub selectNodesAxis { | |
| 239 my ($this,$query,$axis) = @_; | |
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240 |
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241 $axis ||= 'child'; |
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242 |
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243 die new IMPL::InvalidOperationException('Unknown axis',$axis) unless exists $Axes{$axis}; |
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244 |
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245 my $nodes = $this->resolveAxis($axis); |
| 49 | 246 |
| 247 my @result; | |
| 248 | |
| 249 if (ref $query eq 'CODE') { | |
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250 @result = grep &$query($_), @{$nodes}; |
| 49 | 251 } elsif (ref $query eq 'ARRAY' ) { |
| 252 my %keys = map (($_,1),@$query); | |
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253 @result = grep $keys{$_->nodeName}, @{$nodes}; |
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254 } elsif (ref $query eq 'HASH') { |
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255 while( my ($axis,$filter) = each %$query ) { |
| 108 | 256 push @result, $this->selectNodesAxis($filter,$axis); |
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257 } |
| 49 | 258 } elsif (defined $query) { |
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259 @result = grep $_->nodeName eq $query, @{$nodes}; |
| 49 | 260 } else { |
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261 return wantarray ? @{$nodes} : $nodes; |
| 49 | 262 } |
| 263 | |
| 264 return wantarray ? @result : \@result; | |
| 265 } | |
| 266 | |
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267 sub selectParent { |
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268 my ($this) = @_; |
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269 |
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270 if ($this->parentNode) { |
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271 return wantarray ? $this->parentNode : [$this->parentNode]; |
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272 } else { |
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273 return wantarray ? () : []; |
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274 } |
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275 } |
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276 |
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277 sub selectSiblings { |
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278 my ($this) = @_; |
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279 |
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280 if ($this->parentNode) { |
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281 return $this->parentNode->selectNodes( sub { $_ != $this } ); |
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282 } else { |
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283 return wantarray ? () : []; |
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284 } |
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285 } |
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286 |
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287 sub selectDocument { |
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288 my ($this) = @_; |
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289 |
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290 if ($this->document) { |
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291 return wantarray ? $this->document : [$this->document]; |
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292 } else { |
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293 return wantarray ? () : []; |
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294 } |
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295 } |
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296 |
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297 sub selectDescendant { |
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298 wantarray ? |
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299 map $_->selectAll(), $_[0]->childNodes : |
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300 [map $_->selectAll(), $_[0]->childNodes] |
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301 } |
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302 |
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303 sub selectAll { |
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304 map(selectAll($_),@{$_[0]->childNodes}) , $_[0] |
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305 } |
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306 |
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307 sub selectAncestors { |
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308 my $parent = $_[0]->parentNode; |
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309 |
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310 wantarray ? |
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311 ($parent ? ($parent->selectAncestors,$parent) : ()) : |
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312 [$parent ? ($parent->selectAncestors,$parent) : ()] |
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313 } |
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314 |
| 49 | 315 sub firstChild { |
| 316 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0]; | |
| 317 } | |
| 318 | |
| 319 sub _getIsComplex { | |
| 320 $_[0]->childNodes->Count ? 1 : 0; | |
| 321 } | |
| 322 | |
| 323 sub _updateDocRefs { | |
| 324 my ($this) = @_; | |
| 325 | |
| 326 # this method is called by the parent node on his children, so we need no to check parent | |
| 327 $this->{$document} = $this->{$parentNode}->document; | |
| 328 | |
| 329 # prevent cyclic | |
| 330 weaken($this->{$document}) if $this->{$document}; | |
| 331 | |
| 332 $_->_updateDocRefs foreach @{$this->{$childNodes}}; | |
| 333 } | |
| 334 | |
| 335 sub _setParent { | |
| 336 my ($this,$node) = @_; | |
| 337 | |
| 338 | |
| 339 if (($node || 0) != ($this->{$parentNode} || 0)) { | |
| 340 my $newOwner; | |
| 341 if ($node) { | |
| 342 $this->{$parentNode} = $node; | |
| 343 $newOwner = $node->document || 0; | |
| 344 | |
| 345 # prevent from creating cyclicreferences | |
| 346 weaken($this->{$parentNode}); | |
| 347 | |
| 348 } else { | |
| 349 delete $this->{$parentNode}; | |
| 75 | 350 |
| 351 #keep document | |
| 352 $newOwner = $this->{$document}; | |
| 49 | 353 } |
| 354 | |
| 355 if (($this->{$document}||0) != $newOwner) { | |
| 356 $this->{$document} = $newOwner; | |
| 357 weaken($this->{$document}) if $newOwner; | |
| 358 $_->_updateDocRefs foreach @{$this->childNodes}; | |
| 359 } | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 sub text { | |
| 364 my ($this) = @_; | |
| 365 | |
| 366 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes})); | |
| 367 } | |
| 368 | |
| 369 sub nodeProperty { | |
| 370 my $this = shift; | |
| 371 my $name = shift; | |
| 372 | |
| 122 | 373 if (my $method = $this->can($name)) { |
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374 unshift @_,$this; |
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375 # use goto to preserve calling context |
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376 goto &$method; |
| 122 | 377 } |
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378 # dynamic property |
| 49 | 379 if (@_) { |
| 122 | 380 # set |
| 381 return $this->{$_propertyMap}{$name} = shift; | |
| 382 } else { | |
| 383 return $this->{$_propertyMap}{$name}; | |
| 49 | 384 } |
| 385 } | |
| 386 | |
| 122 | 387 sub listProperties { |
| 388 my ($this) = @_; | |
| 389 | |
| 390 my %props = map {$_->Name, 1} $this->get_meta(typeof IMPL::Class::PropertyInfo, sub { $_->Attributes->{domProperty}},1); | |
| 391 | |
| 392 return (keys %props,keys %{$this->{$_propertyMap}}); | |
| 393 } | |
| 394 | |
| 49 | 395 sub qname { |
| 396 $_[0]->{$nodeName}; | |
| 397 } | |
| 398 | |
| 399 sub path { | |
| 400 my ($this) = @_; | |
| 401 | |
| 402 if ($this->parentNode) { | |
| 403 return $this->parentNode->path.'.'.$this->qname; | |
| 404 } else { | |
| 405 return $this->qname; | |
| 406 } | |
| 407 } | |
| 408 | |
| 409 1; | |
| 75 | 410 |
| 411 __END__ | |
| 412 | |
| 413 =pod | |
| 414 | |
| 415 =head1 NAME | |
| 416 | |
| 417 C<IMPL::DOM::Node> Элемент DOM модели | |
| 418 | |
| 419 =head1 DESCRIPTION | |
| 420 | |
| 421 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели. | |
| 422 | |
| 423 =head1 MEMBERS | |
| 424 | |
| 425 =head2 PROPERTIES | |
| 426 | |
| 427 =over | |
| 428 | |
| 429 =item C<[get] nodeName> | |
| 430 | |
| 431 Имя узла. Задается при создании. | |
| 432 | |
| 433 =item C<[get] document> | |
| 434 | |
| 435 Документ к которому принадлежит узел. Задается при поздании узла. | |
| 436 | |
| 437 =item C<[get] isComplex> | |
| 438 | |
| 439 Определяет является ли узел сложным (тоесть есть ли дети). | |
| 440 | |
| 441 C<true> - есть, C<false> - нет. | |
| 442 | |
| 443 =item C<[get,set] nodeValue> | |
| 444 | |
| 445 Значение узла, обычно простой скаляр, но ничто не мешает туда | |
| 446 устанавливать любое значение. | |
| 447 | |
| 448 =item C<[get,list] childNodes> | |
| 449 | |
| 450 Список детей, является списокм C<IMPL::Object::List>. | |
| 451 | |
| 452 =item C<[get] parentNode> | |
| 453 | |
| 454 Ссылка на родительский элемент, если таковой имеется. | |
| 455 | |
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456 =item C<[get] schema> |
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457 |
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458 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий схему данных текущего узла. Может быть C<undef>. |
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459 |
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460 =item C<[get] schema> |
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461 |
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462 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий элемент схемы, объявляющий данный узел. Может быть C<undef>. |
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463 |
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464 Отличается от свойства C<schema> тем, что узел в случае ссылки на тип узла, данной свойство будет содержать |
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465 описание ссылки C<IMPL::DOM::Schema::Node>, а свойство C<schema> например будет ссылаться на |
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466 C<IMPL::DOM::Schema::ComplexType>. |
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467 |
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468 =back |
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469 |
| 75 | 470 =head2 METHODS |
| 471 | |
| 472 =cut |