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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 };
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20 public _direct property parentNode => prop_get ;
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21 private _direct property _propertyMap => prop_all ;
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22 }
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23
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24 sub CTOR {
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25 my ($this,%args) = @_;
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26
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27 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required");
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28 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue};
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29 if ( exists $args{document} ) {
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30 $this->{$document} = delete $args{document};
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31 weaken($this->{$document});
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32 }
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33
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34 $this->{$_propertyMap} = \%args;
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35 }
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36
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37 sub insertNode {
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38 my ($this,$node,$pos) = @_;
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39
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40 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node;
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41
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42 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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43
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44 $this->childNodes->InsertAt($pos,$node);
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45
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46 $node->_setParent( $this );
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47
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48 return $node;
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49 }
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50
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51 sub appendChild {
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52 my ($this,$node) = @_;
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53
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54 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node;
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55
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56 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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57
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58 my $children = $this->childNodes;
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59 $children->Append($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 $node;
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64 }
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65
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66 sub appendNode {
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67 goto &appendChild;
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68 }
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69
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70 sub appendRange {
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71 my ($this,@range) = @_;
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72
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73 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range;
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74
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75 foreach my $node (@range) {
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76 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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77 $node->_setParent( $this );
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78 }
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79
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80 $this->childNodes->Append(@range);
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81
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82 return $this;
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83 }
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84
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85 sub _getChildNodes {
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86 my ($this) = @_;
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87
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88 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes};
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89 return $this->{$childNodes};
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90 }
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91
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92 sub removeNode {
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93 my ($this,$node) = @_;
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94
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95 if ($this == $node->{$parentNode}) {
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96 $this->childNodes->RemoveItem($node);
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97 $node->_setParent(undef);
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98 return $node;
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99 } else {
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100 die new IMPL::InvalidOperationException("The specified node isn't belong to this node");
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101 }
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102 }
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103
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104 sub replaceNodeAt {
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105 my ($this,$index,$node) = @_;
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106
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107 my $nodeOld = $this->childNodes->[$index];
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108
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109 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node;
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110
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111 # unlink node from previous parent
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112 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode});
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113
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114 # replace (or set) old node
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115 $this->childNodes->[$index] = $node;
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116
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117 # set new parent
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118 $node->_setParent( $this );
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119
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120 # unlink old node if we have one
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121 $nodeOld->_setParent(undef) if $nodeOld;
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122
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123 # return old node
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124 return $nodeOld;
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125 }
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126
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127 sub removeAt {
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128 my ($this,$pos) = @_;
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129
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130 if ( my $node = $this->childNodes->RemoveAt($pos) ) {
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131 $node->_setParent(undef);
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132 return $node;
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133 } else {
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134 return undef;
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135 }
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136 }
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137
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138 sub removeLast {
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139 my ($this) = @_;
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140
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141 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) {
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142 $node->_setParent(undef);
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143 return $node;
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144 } else {
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145 return undef;
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146 }
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147 }
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148
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149 sub removeSelected {
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150 my ($this,$query) = @_;
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151
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152 my @newSet;
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153 my @result;
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154
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155 if (ref $query eq 'CODE') {
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156 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes};
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157 } elsif (defined $query) {
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158 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes};
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159 } else {
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160 my $children = $this->childNodes;
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161 $_->_setParent(undef) foreach @$children;
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162 delete $this->{$childNodes};
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163 return wantarray ? @$children : $children;
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164 }
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165
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166 $_->_setParent(undef) foreach @result;
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167
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168 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef;
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169
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170 return wantarray ? @result : \@result;
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171 }
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172
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173 sub selectNodes {
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174 my ($this,$query) = @_;
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175
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176 my @result;
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177
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178 if (ref $query eq 'CODE') {
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179 @result = grep &$query($_), @{$this->childNodes};
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180 } elsif (ref $query eq 'ARRAY' ) {
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181 my %keys = map (($_,1),@$query);
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182 @result = grep $keys{$_->nodeName}, @{$this->childNodes};
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183 } elsif (defined $query) {
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184 @result = grep $_->nodeName eq $query, @{$this->childNodes};
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185 } else {
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186 if (wantarray) {
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187 return @{$this->childNodes};
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188 } else {
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189 @result = $this->childNodes;
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190 return \@result;
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191 }
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192 }
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193
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194 return wantarray ? @result : \@result;
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195 }
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196
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197 sub firstChild {
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198 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0];
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199 }
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200
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201 sub _getIsComplex {
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202 $_[0]->childNodes->Count ? 1 : 0;
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203 }
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204
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205 sub _updateDocRefs {
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206 my ($this) = @_;
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207
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208 # this method is called by the parent node on his children, so we need no to check parent
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209 $this->{$document} = $this->{$parentNode}->document;
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210
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211 # prevent cyclic
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212 weaken($this->{$document}) if $this->{$document};
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213
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214 $_->_updateDocRefs foreach @{$this->{$childNodes}};
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215 }
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216
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217 sub _setParent {
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218 my ($this,$node) = @_;
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219
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220
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221 if (($node || 0) != ($this->{$parentNode} || 0)) {
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222 my $newOwner;
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223 if ($node) {
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224 $this->{$parentNode} = $node;
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225 $newOwner = $node->document || 0;
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226
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227 # prevent from creating cyclicreferences
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228 weaken($this->{$parentNode});
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229
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230 } else {
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231 delete $this->{$parentNode};
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75
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232
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233 #keep document
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234 $newOwner = $this->{$document};
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49
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235 }
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236
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237 if (($this->{$document}||0) != $newOwner) {
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238 $this->{$document} = $newOwner;
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239 weaken($this->{$document}) if $newOwner;
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240 $_->_updateDocRefs foreach @{$this->childNodes};
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241 }
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242 }
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243 }
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244
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245 sub text {
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246 my ($this) = @_;
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247
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248 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes}));
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249 }
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250
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251 sub nodeProperty {
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252 my $this = shift;
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253 my $name = shift;
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254
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255 if (@_) {
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256 # set
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257 return $this->{$_propertyMap}{$name} = shift;
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258 } else {
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259 return $this->{$_propertyMap}{$name};
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260 }
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261 }
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262
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263 sub qname {
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264 $_[0]->{$nodeName};
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265 }
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266
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267 sub path {
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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 $this->parentNode->path.'.'.$this->qname;
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272 } else {
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273 return $this->qname;
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274 }
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275 }
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276
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277 1;
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278
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279 __END__
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280
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281 =pod
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282
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283 =head1 NAME
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284
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285 C<IMPL::DOM::Node> Элемент DOM модели
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286
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287 =head1 DESCRIPTION
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288
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289 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели.
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290
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291 =head1 MEMBERS
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292
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293 =head2 PROPERTIES
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294
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295 =over
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296
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297 =item C<[get] nodeName>
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298
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299 Имя узла. Задается при создании.
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300
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301 =item C<[get] document>
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302
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303 Документ к которому принадлежит узел. Задается при поздании узла.
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304
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305 =item C<[get] isComplex>
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306
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307 Определяет является ли узел сложным (тоесть есть ли дети).
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308
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309 C<true> - есть, C<false> - нет.
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310
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311 =item C<[get,set] nodeValue>
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312
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313 Значение узла, обычно простой скаляр, но ничто не мешает туда
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314 устанавливать любое значение.
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315
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316 =item C<[get,list] childNodes>
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317
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318 Список детей, является списокм C<IMPL::Object::List>.
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319
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320 =item C<[get] parentNode>
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321
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322 Ссылка на родительский элемент, если таковой имеется.
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323
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324 =head2 METHODS
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325
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326 =cut |
