Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Node.pm @ 111:6c25ea91c985
ControllerUnit concept
| author | wizard |
|---|---|
| date | Tue, 18 May 2010 01:33:37 +0400 |
| parents | ddf0f037d460 |
| children | 7b14e0122b79 |
| 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 ; | |
| 22 } | |
| 23 | |
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24 our %Axes = ( |
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25 parent => \&selectParent, |
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26 siblings => \&selectSiblings, |
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27 child => \&childNodes, |
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28 document => \&selectDocument |
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29 ); |
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30 |
| 49 | 31 sub CTOR { |
| 32 my ($this,%args) = @_; | |
| 33 | |
| 34 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required"); | |
| 35 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue}; | |
| 36 if ( exists $args{document} ) { | |
| 37 $this->{$document} = delete $args{document}; | |
| 38 weaken($this->{$document}); | |
| 39 } | |
| 40 | |
| 41 $this->{$_propertyMap} = \%args; | |
| 42 } | |
| 43 | |
| 44 sub insertNode { | |
| 45 my ($this,$node,$pos) = @_; | |
| 46 | |
| 47 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 48 | |
| 49 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 50 | |
| 51 $this->childNodes->InsertAt($pos,$node); | |
| 52 | |
| 53 $node->_setParent( $this ); | |
| 54 | |
| 55 return $node; | |
| 56 } | |
| 57 | |
| 58 sub appendChild { | |
| 59 my ($this,$node) = @_; | |
| 60 | |
| 61 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 62 | |
| 63 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 64 | |
| 65 my $children = $this->childNodes; | |
| 66 $children->Append($node); | |
| 67 | |
| 68 $node->_setParent( $this ); | |
| 69 | |
| 70 return $node; | |
| 71 } | |
| 72 | |
| 73 sub appendNode { | |
| 74 goto &appendChild; | |
| 75 } | |
| 76 | |
| 77 sub appendRange { | |
| 78 my ($this,@range) = @_; | |
| 79 | |
| 80 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range; | |
| 81 | |
| 82 foreach my $node (@range) { | |
| 83 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 84 $node->_setParent( $this ); | |
| 85 } | |
| 86 | |
| 87 $this->childNodes->Append(@range); | |
| 88 | |
| 89 return $this; | |
| 90 } | |
| 91 | |
| 92 sub _getChildNodes { | |
| 93 my ($this) = @_; | |
| 94 | |
| 95 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes}; | |
| 102 | 96 return wantarray ? @{ $this->{$childNodes} } : $this->{$childNodes}; |
| 49 | 97 } |
| 98 | |
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99 sub childNodesRef { |
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100 my ($this) = @_; |
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101 return scalar $this->_getChildNodes; |
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102 } |
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103 |
| 49 | 104 sub removeNode { |
| 105 my ($this,$node) = @_; | |
| 106 | |
| 107 if ($this == $node->{$parentNode}) { | |
| 108 $this->childNodes->RemoveItem($node); | |
| 109 $node->_setParent(undef); | |
| 110 return $node; | |
| 111 } else { | |
| 112 die new IMPL::InvalidOperationException("The specified node isn't belong to this node"); | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 sub replaceNodeAt { | |
| 117 my ($this,$index,$node) = @_; | |
| 118 | |
| 119 my $nodeOld = $this->childNodes->[$index]; | |
| 120 | |
| 121 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 122 | |
| 123 # unlink node from previous parent | |
| 124 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 125 | |
| 126 # replace (or set) old node | |
| 127 $this->childNodes->[$index] = $node; | |
| 128 | |
| 129 # set new parent | |
| 130 $node->_setParent( $this ); | |
| 131 | |
| 132 # unlink old node if we have one | |
| 133 $nodeOld->_setParent(undef) if $nodeOld; | |
| 134 | |
| 135 # return old node | |
| 136 return $nodeOld; | |
| 137 } | |
| 138 | |
| 139 sub removeAt { | |
| 140 my ($this,$pos) = @_; | |
| 141 | |
| 142 if ( my $node = $this->childNodes->RemoveAt($pos) ) { | |
| 143 $node->_setParent(undef); | |
| 144 return $node; | |
| 145 } else { | |
| 146 return undef; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 sub removeLast { | |
| 151 my ($this) = @_; | |
| 152 | |
| 153 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) { | |
| 154 $node->_setParent(undef); | |
| 155 return $node; | |
| 156 } else { | |
| 157 return undef; | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 sub removeSelected { | |
| 162 my ($this,$query) = @_; | |
| 163 | |
| 164 my @newSet; | |
| 165 my @result; | |
| 166 | |
| 167 if (ref $query eq 'CODE') { | |
| 168 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 169 } elsif (defined $query) { | |
| 170 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 171 } else { | |
| 172 my $children = $this->childNodes; | |
| 173 $_->_setParent(undef) foreach @$children; | |
| 174 delete $this->{$childNodes}; | |
| 175 return wantarray ? @$children : $children; | |
| 176 } | |
| 177 | |
| 178 $_->_setParent(undef) foreach @result; | |
| 179 | |
| 180 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef; | |
| 181 | |
| 182 return wantarray ? @result : \@result; | |
| 183 } | |
| 184 | |
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185 sub resolveAxis { |
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186 my ($this,$axis) = @_; |
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187 return $Axes{$axis}->($this) |
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188 } |
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189 |
| 49 | 190 sub selectNodes { |
| 108 | 191 my $this = shift; |
| 192 my ($path) = @_; | |
| 193 | |
| 194 $path = ref $path eq 'ARRAY' ? $path : ( @_ == 1 ? $this->translatePath($path) : [@_]); | |
| 195 | |
| 196 my @set = ($this); | |
| 197 | |
| 198 while (my $query = shift @$path) { | |
| 199 @set = map $_->selectNodesAxis($query), @set; | |
| 200 } | |
| 201 | |
| 202 return wantarray ? @set : \@set; | |
| 203 } | |
| 204 | |
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205 sub selectNodesRef { |
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206 my $this = shift; |
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207 |
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208 my @result = $this->selectNodes(@_); |
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209 return \@result; |
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210 } |
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211 |
| 108 | 212 sub translatePath { |
| 213 my ($this,$path) = @_; | |
| 214 | |
| 215 # TODO: Move path compilation here from IMPL::DOM::Schema::Validator::Compare | |
| 216 return [$path]; | |
| 217 } | |
| 218 | |
| 219 sub selectNodesAxis { | |
| 220 my ($this,$query,$axis) = @_; | |
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221 |
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222 $axis ||= 'child'; |
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223 |
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224 die new IMPL::InvalidOperationException('Unknown axis',$axis) unless exists $Axes{$axis}; |
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225 |
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226 my $nodes = $this->resolveAxis($axis); |
| 49 | 227 |
| 228 my @result; | |
| 229 | |
| 230 if (ref $query eq 'CODE') { | |
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231 @result = grep &$query($_), @{$nodes}; |
| 49 | 232 } elsif (ref $query eq 'ARRAY' ) { |
| 233 my %keys = map (($_,1),@$query); | |
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234 @result = grep $keys{$_->nodeName}, @{$nodes}; |
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235 } elsif (ref $query eq 'HASH') { |
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236 while( my ($axis,$filter) = each %$query ) { |
| 108 | 237 push @result, $this->selectNodesAxis($filter,$axis); |
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238 } |
| 49 | 239 } elsif (defined $query) { |
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240 @result = grep $_->nodeName eq $query, @{$nodes}; |
| 49 | 241 } else { |
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242 return wantarray ? @{$nodes} : $nodes; |
| 49 | 243 } |
| 244 | |
| 245 return wantarray ? @result : \@result; | |
| 246 } | |
| 247 | |
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248 sub selectParent { |
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249 my ($this) = @_; |
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250 |
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251 if ($this->parentNode) { |
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252 return wantarray ? $this->parentNode : [$this->parentNode]; |
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253 } else { |
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254 return wantarray ? () : []; |
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255 } |
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256 } |
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257 |
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258 sub selectSiblings { |
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259 my ($this) = @_; |
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260 |
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261 if ($this->parentNode) { |
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262 return $this->parentNode->selectNodes( sub { $_ != $this } ); |
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263 } else { |
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264 return wantarray ? () : []; |
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265 } |
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266 } |
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267 |
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268 sub selectDocument { |
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269 my ($this) = @_; |
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270 |
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271 if ($this->document) { |
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272 return wantarray ? $this->document : [$this->document]; |
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273 } else { |
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274 return wantarray ? () : []; |
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275 } |
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276 } |
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277 |
| 49 | 278 sub firstChild { |
| 279 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0]; | |
| 280 } | |
| 281 | |
| 282 sub _getIsComplex { | |
| 283 $_[0]->childNodes->Count ? 1 : 0; | |
| 284 } | |
| 285 | |
| 286 sub _updateDocRefs { | |
| 287 my ($this) = @_; | |
| 288 | |
| 289 # this method is called by the parent node on his children, so we need no to check parent | |
| 290 $this->{$document} = $this->{$parentNode}->document; | |
| 291 | |
| 292 # prevent cyclic | |
| 293 weaken($this->{$document}) if $this->{$document}; | |
| 294 | |
| 295 $_->_updateDocRefs foreach @{$this->{$childNodes}}; | |
| 296 } | |
| 297 | |
| 298 sub _setParent { | |
| 299 my ($this,$node) = @_; | |
| 300 | |
| 301 | |
| 302 if (($node || 0) != ($this->{$parentNode} || 0)) { | |
| 303 my $newOwner; | |
| 304 if ($node) { | |
| 305 $this->{$parentNode} = $node; | |
| 306 $newOwner = $node->document || 0; | |
| 307 | |
| 308 # prevent from creating cyclicreferences | |
| 309 weaken($this->{$parentNode}); | |
| 310 | |
| 311 } else { | |
| 312 delete $this->{$parentNode}; | |
| 75 | 313 |
| 314 #keep document | |
| 315 $newOwner = $this->{$document}; | |
| 49 | 316 } |
| 317 | |
| 318 if (($this->{$document}||0) != $newOwner) { | |
| 319 $this->{$document} = $newOwner; | |
| 320 weaken($this->{$document}) if $newOwner; | |
| 321 $_->_updateDocRefs foreach @{$this->childNodes}; | |
| 322 } | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 sub text { | |
| 327 my ($this) = @_; | |
| 328 | |
| 329 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes})); | |
| 330 } | |
| 331 | |
| 332 sub nodeProperty { | |
| 333 my $this = shift; | |
| 334 my $name = shift; | |
| 335 | |
| 336 if (@_) { | |
| 337 # set | |
| 338 return $this->{$_propertyMap}{$name} = shift; | |
| 339 } else { | |
| 340 return $this->{$_propertyMap}{$name}; | |
| 341 } | |
| 342 } | |
| 343 | |
| 344 sub qname { | |
| 345 $_[0]->{$nodeName}; | |
| 346 } | |
| 347 | |
| 348 sub path { | |
| 349 my ($this) = @_; | |
| 350 | |
| 351 if ($this->parentNode) { | |
| 352 return $this->parentNode->path.'.'.$this->qname; | |
| 353 } else { | |
| 354 return $this->qname; | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 1; | |
| 75 | 359 |
| 360 __END__ | |
| 361 | |
| 362 =pod | |
| 363 | |
| 364 =head1 NAME | |
| 365 | |
| 366 C<IMPL::DOM::Node> Элемент DOM модели | |
| 367 | |
| 368 =head1 DESCRIPTION | |
| 369 | |
| 370 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели. | |
| 371 | |
| 372 =head1 MEMBERS | |
| 373 | |
| 374 =head2 PROPERTIES | |
| 375 | |
| 376 =over | |
| 377 | |
| 378 =item C<[get] nodeName> | |
| 379 | |
| 380 Имя узла. Задается при создании. | |
| 381 | |
| 382 =item C<[get] document> | |
| 383 | |
| 384 Документ к которому принадлежит узел. Задается при поздании узла. | |
| 385 | |
| 386 =item C<[get] isComplex> | |
| 387 | |
| 388 Определяет является ли узел сложным (тоесть есть ли дети). | |
| 389 | |
| 390 C<true> - есть, C<false> - нет. | |
| 391 | |
| 392 =item C<[get,set] nodeValue> | |
| 393 | |
| 394 Значение узла, обычно простой скаляр, но ничто не мешает туда | |
| 395 устанавливать любое значение. | |
| 396 | |
| 397 =item C<[get,list] childNodes> | |
| 398 | |
| 399 Список детей, является списокм C<IMPL::Object::List>. | |
| 400 | |
| 401 =item C<[get] parentNode> | |
| 402 | |
| 403 Ссылка на родительский элемент, если таковой имеется. | |
| 404 | |
| 405 =head2 METHODS | |
| 406 | |
| 407 =cut |