annotate Lib/IMPL/DOM/Node.pm @ 153:3765adf1803f

minor fixes
author wizard
date Mon, 27 Sep 2010 19:15:34 +0400
parents 1e7f03414b65
children 76515373dac0
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1 package IMPL::DOM::Node;
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2 use strict;
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3 use warnings;
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4
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5 use base qw(IMPL::Object);
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6
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7 use IMPL::Object::List;
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8 use IMPL::Class::Property;
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9 use IMPL::Class::Property::Direct;
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10 use Scalar::Util qw(weaken);
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11
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12 use IMPL::Exception;
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13
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14 BEGIN {
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15 public _direct property nodeName => prop_get;
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16 public _direct property document => prop_get;
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17 public _direct property isComplex => { get => \&_getIsComplex } ;
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18 public _direct property nodeValue => prop_all;
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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;
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23 private _direct property _propertyMap => prop_all ;
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24
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25 __PACKAGE__->class_data(property_bind => {});
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26 }
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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
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37 sub CTOR {
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38 my ($this,%args) = @_;
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39
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40 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required");
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41 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue};
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42 if ( exists $args{document} ) {
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43 $this->{$document} = delete $args{document};
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44 weaken($this->{$document});
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45 }
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46
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47 while ( my ($key,$value) = each %args ) {
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48 $this->nodeProperty($key,$value);
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49 }
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50 }
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51
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52 sub insertNode {
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53 my ($this,$node,$pos) = @_;
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54
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55 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node;
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56
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57 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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58
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59 $this->childNodes->InsertAt($pos,$node);
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60
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61 $node->_setParent( $this );
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62
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63 return $node;
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64 }
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65
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66 sub appendChild {
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67 my ($this,$node) = @_;
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68
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69 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node;
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70
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71 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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72
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73 my $children = $this->childNodes;
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74 $children->Append($node);
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75
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76 $node->_setParent( $this );
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77
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78 return $node;
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79 }
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80
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81 sub appendNode {
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82 goto &appendChild;
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83 }
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84
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85 sub appendRange {
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86 my ($this,@range) = @_;
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87
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88 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range;
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89
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90 foreach my $node (@range) {
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91 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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92 $node->_setParent( $this );
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93 }
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94
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95 $this->childNodes->Append(@range);
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96
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97 return $this;
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98 }
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99
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100 sub _getChildNodes {
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101 my ($this) = @_;
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102
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103 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes};
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104 return wantarray ? @{ $this->{$childNodes} } : $this->{$childNodes};
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105 }
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106
109
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107 sub childNodesRef {
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108 my ($this) = @_;
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109 return scalar $this->_getChildNodes;
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110 }
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111
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112 sub removeNode {
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113 my ($this,$node) = @_;
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114
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115 if ($this == $node->{$parentNode}) {
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116 $this->childNodes->RemoveItem($node);
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117 $node->_setParent(undef);
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118 return $node;
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119 } else {
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120 die new IMPL::InvalidOperationException("The specified node isn't belong to this node");
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121 }
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122 }
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123
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124 sub replaceNodeAt {
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125 my ($this,$index,$node) = @_;
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126
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127 my $nodeOld = $this->childNodes->[$index];
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128
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129 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node;
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130
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131 # unlink node from previous parent
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132 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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133
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134 # replace (or set) old node
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135 $this->childNodes->[$index] = $node;
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136
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137 # set new parent
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138 $node->_setParent( $this );
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139
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140 # unlink old node if we have one
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141 $nodeOld->_setParent(undef) if $nodeOld;
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142
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143 # return old node
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144 return $nodeOld;
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145 }
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146
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147 sub removeAt {
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148 my ($this,$pos) = @_;
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149
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150 if ( my $node = $this->childNodes->RemoveAt($pos) ) {
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151 $node->_setParent(undef);
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152 return $node;
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153 } else {
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154 return undef;
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155 }
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156 }
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157
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158 sub removeLast {
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159 my ($this) = @_;
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160
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161 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) {
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162 $node->_setParent(undef);
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163 return $node;
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164 } else {
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165 return undef;
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166 }
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167 }
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168
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169 sub removeSelected {
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170 my ($this,$query) = @_;
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171
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172 my @newSet;
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173 my @result;
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174
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175 if (ref $query eq 'CODE') {
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176 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes};
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177 } elsif (defined $query) {
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178 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes};
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179 } else {
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180 my $children = $this->childNodes;
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181 $_->_setParent(undef) foreach @$children;
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182 delete $this->{$childNodes};
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183 return wantarray ? @$children : $children;
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184 }
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185
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186 $_->_setParent(undef) foreach @result;
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187
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188 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef;
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189
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190 return wantarray ? @result : \@result;
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191 }
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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
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198 sub selectNodes {
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199 my $this = shift;
122
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200 my $path;
108
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201
122
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202 if (@_ == 1) {
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203 $path = $this->translatePath($_[0]);
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204 } else {
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205 $path = [@_];
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206 }
108
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207
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208 my @set = ($this);
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209
122
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210 while (@$path) {
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211 my $query = shift @$path;
108
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212 @set = map $_->selectNodesAxis($query), @set;
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213 }
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214
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215 return wantarray ? @set : \@set;
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216 }
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217
113
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218 sub selectSingleNode {
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219 my $this = shift;
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220 my @result = $this->selectNodes(@_);
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221 return $result[0];
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222 }
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223
109
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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 = $this->selectNodes(@_);
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228 return \@result;
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229 }
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230
108
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231 sub translatePath {
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232 my ($this,$path) = @_;
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233
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234 # TODO: Move path compilation here from IMPL::DOM::Schema::Validator::Compare
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235 return [$path];
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236 }
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237
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238 sub selectNodesAxis {
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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);
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246
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247 my @result;
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248
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249 if (ref $query eq 'CODE') {
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250 @result = grep &$query($_), @{$nodes};
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251 } elsif (ref $query eq 'ARRAY' ) {
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252 my %keys = map (($_,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 ) {
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256 push @result, $this->selectNodesAxis($filter,$axis);
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257 }
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258 } elsif (defined $query) {
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259 @result = grep $_->nodeName eq $query, @{$nodes};
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260 } else {
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261 return wantarray ? @{$nodes} : $nodes;
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262 }
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263
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264 return wantarray ? @result : \@result;
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265 }
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266
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267 sub selectParent {
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268 my ($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
148
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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
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315 sub firstChild {
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316 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0];
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317 }
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318
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319 sub _getIsComplex {
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320 ($_[0]->{$childNodes} and $_[0]->{$childNodes}->Count) ? 1 : 0;
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321 }
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322
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323 sub _updateDocRefs {
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324 my ($this) = @_;
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325
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326 # this method is called by the parent node on his children, so we need no to check parent
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327 $this->{$document} = $this->{$parentNode}->document;
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328
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329 # prevent cyclic
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330 weaken($this->{$document}) if $this->{$document};
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331
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332 $_->_updateDocRefs foreach @{$this->{$childNodes}};
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333 }
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334
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335 sub _setParent {
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336 my ($this,$node) = @_;
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337
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338
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339 if (($node || 0) != ($this->{$parentNode} || 0)) {
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340 my $newOwner;
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341 if ($node) {
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342 $this->{$parentNode} = $node;
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343 $newOwner = $node->document || 0;
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344
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345 # prevent from creating cyclicreferences
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346 weaken($this->{$parentNode});
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347
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348 } else {
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349 delete $this->{$parentNode};
75
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350
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351 #keep document
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352 $newOwner = $this->{$document};
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353 }
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354
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355 if (($this->{$document}||0) != $newOwner) {
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356 $this->{$document} = $newOwner;
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357 weaken($this->{$document}) if $newOwner;
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358 $_->_updateDocRefs foreach @{$this->childNodes};
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359 }
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360 }
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361 }
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362
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363 sub text {
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364 my ($this) = @_;
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365
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366 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes}));
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367 }
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368
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369 sub nodeProperty {
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370 my $this = shift;
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371 my $name = shift;
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diff changeset
372
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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;
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377 }
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378 # dynamic property
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379 if (@_) {
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380 # set
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381 return $this->{$_propertyMap}{$name} = shift;
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382 } else {
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383 return $this->{$_propertyMap}{$name};
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384 }
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385 }
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386
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387 sub listProperties {
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388 my ($this) = @_;
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389
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390 my %props = map {$_->Name, 1} $this->get_meta(typeof IMPL::Class::PropertyInfo, sub { $_->Attributes->{domProperty}},1);
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391
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392 return (keys %props,keys %{$this->{$_propertyMap}});
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393 }
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394
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395 sub save {
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396 my ($this,$writer) = @_;
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397
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398 if ( not ( $this->isComplex or defined $this->{$nodeValue} ) ) {
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399 $writer->emptyTag(
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400 $this->{$nodeName},
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401 map {
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402 $_,
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403 $this->nodeProperty($_)
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404 } grep defined $this->nodeProperty($_), $this->listProperties
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405 );
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406 } else {
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407 $writer->startTag(
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408 $this->{$nodeName},
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409 map {
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410 $_,
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411 $this->nodeProperty($_)
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412 } grep defined $this->nodeProperty($_), $this->listProperties
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413 );
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414 $writer->characters($this->{$nodeValue}) if $this->{$nodeValue};
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415
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416 $_->save($writer) foreach $this->childNodes;
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417
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418 $writer->endTag($this->{$nodeName});
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419 }
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420 }
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421
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422 sub qname {
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423 $_[0]->{$nodeName};
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424 }
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425
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426 sub path {
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427 my ($this) = @_;
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428
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429 if ($this->parentNode) {
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430 return $this->parentNode->path.'.'.$this->qname;
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431 } else {
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432 return $this->qname;
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433 }
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434 }
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435
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436 1;
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437
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438 __END__
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439
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440 =pod
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441
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442 =head1 NAME
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443
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444 C<IMPL::DOM::Node> Элемент DOM модели
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445
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446 =head1 DESCRIPTION
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447
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448 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели.
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449
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450 =head1 MEMBERS
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451
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452 =head2 PROPERTIES
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453
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454 =over
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455
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456 =item C<[get] nodeName>
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457
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458 Имя узла. Задается при создании.
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459
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460 =item C<[get] document>
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461
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462 Документ к которому принадлежит узел. Задается при поздании узла.
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463
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464 =item C<[get] isComplex>
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465
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466 Определяет является ли узел сложным (тоесть есть ли дети).
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467
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468 C<true> - есть, C<false> - нет.
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469
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470 =item C<[get,set] nodeValue>
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471
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472 Значение узла, обычно простой скаляр, но ничто не мешает туда
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473 устанавливать любое значение.
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474
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475 =item C<[get,list] childNodes>
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476
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477 Список детей, является списокм C<IMPL::Object::List>.
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478
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479 =item C<[get] parentNode>
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480
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481 Ссылка на родительский элемент, если таковой имеется.
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482
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483 =item C<[get] schema>
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484
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485 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий схему данных текущего узла. Может быть C<undef>.
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486
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487 =item C<[get] schema>
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488
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489 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий элемент схемы, объявляющий данный узел. Может быть C<undef>.
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490
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491 Отличается от свойства C<schema> тем, что узел в случае ссылки на тип узла, данной свойство будет содержать
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492 описание ссылки C<IMPL::DOM::Schema::Node>, а свойство C<schema> например будет ссылаться на
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493 C<IMPL::DOM::Schema::ComplexType>.
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494
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495 =back
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496
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497 =head2 METHODS
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498
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499 =cut