annotate Lib/IMPL/Web/View/TTFactory.pm @ 307:2da2564f115d

*TTView: fixed memory leak
author cin
date Thu, 18 Apr 2013 02:21:28 +0400
parents b5d5793f348e
children 5e4e7c8fbca1
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1 package IMPL::Web::View::TTFactory;
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2 use strict;
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3
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4 use Template::Context();
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5
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6 use Carp qw(carp);
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7 use IMPL::lang qw(:hash);
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8 use IMPL::Exception();
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9 use Scalar::Util qw(weaken);
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10
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11
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12 use IMPL::Const qw(:prop);
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13 use IMPL::declare {
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14 require => {
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15 Loader => 'IMPL::Code::Loader',
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16 OpException => '-IMPL::InvalidOperationException',
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17 ArgException => '-IMPL::InvalidArgumentException'
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18 },
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19 base => [
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20 'IMPL::Object::Factory' => sub {
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21 shift->class || 'IMPL::Web::View::TTControl';
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22 }
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23 ],
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24 props => [
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25 template => PROP_RW,
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26 context => PROP_RW,
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27 instances => PROP_RW,
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28 baseLocation => PROP_RW,
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29 base => PROP_RW,
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30 registry => PROP_RO,
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31 blocks => PROP_RO,
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32 initialized => PROP_RO
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33 ]
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34 };
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35
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36 sub CTOR {
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37 my ($this,$template,$context,$path,$registry) = @_;
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38
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39 die ArgException->new("A template is required") unless $template;
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40
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41 Loader->safe->Require($this->factory)
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42 if $this->factory and not ref $this->factory;
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43
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44 $context ||= new Template::Context();
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45 my $baseLocation = join( '/', splice( @{[split(/\//,$path)]}, 0, -1 ) );
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46
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47 $this->template($template);
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48 $this->context($context);
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49 $this->baseLocation($baseLocation);
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50 $this->instances(0);
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51 $this->registry($registry);
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52
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53 if (my $baseTplName = $template->extends) {
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54 $baseTplName =~ s{^\./}{$baseLocation/};
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55
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56 my $base = $registry->Require($baseTplName)
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57 or die OpException->new("The specified base template isn't found");
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58
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59 $this->base($base);
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60
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61 $this->blocks(hashMerge($base->blocks, $template->blocks));
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62
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63 # блок BASE должен меняться в процессе выполнения, в зависимости от
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64 # шаблона, который рендерится, по мере перехода в BASE
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65
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66 my @baseStack;
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67
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68 $this->blocks->{BASE} = sub {
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69 my $ctx = shift;
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70
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71 die OpException->new("This tamplate doesn't have a base template")
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72 unless $base;
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73
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74 push @baseStack, $base;
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75 my $block = $base->template->block;
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76
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77 $base = $base->base;
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78
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79 my $result = eval {
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80 $ctx->process($block);
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81 };
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82 my $e = $@;
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83
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84 $base = pop @baseStack;
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85
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86 die $e if $e;
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87 return $result;
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88 };
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89 } else {
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90 $this->blocks( $template->blocks );
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91 }
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92
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93 if(my $blocks = $this->blocks) {
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94 while (my ($name,$block) = each %$blocks) {
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95 $context->define_block($name,$block);
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96 }
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97 }
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98
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99 $context->stash->update({ require => sub {
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100 my ($module) = @_;
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101
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102 $module =~ s/^\.\//$baseLocation\//;
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103 return $registry->Require($module);
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104 }});
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105 }
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106
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107 sub MergeParameters {
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108 my $this = shift;
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109 my $refProps = shift || {};
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110
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111 unless (ref($refProps) eq 'HASH') {
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112 carp "Passing control name through the first parameter is deprecated";
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113 my $name = $refProps;
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114 $refProps = shift;
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115 $refProps->{name} ||= $name;
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116 }
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117
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118 $refProps->{factory} = $this;
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119 my $ctx = $this->CloneContext();
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120
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121 return ($this->template, $ctx, $refProps);
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122 }
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123
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124 sub CreateObject {
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125 my $this = shift;
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126
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127 $this->InitOnDemand();
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128
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129 my $instance = $this->SUPER::CreateObject(@_);
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130
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131 my $count = $this->instances;
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132 $count++;
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133 $this->instances($count);
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134
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135 return $instance;
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136 }
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137
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138 sub InitOnDemand {
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139 my ($this) = @_;
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140
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141 unless ($this->initialized) {
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142 $this->initialized(1);
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143
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144 $this->base->InitOnDemand()
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145 if $this->base;
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146
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147 if (my $init = $this->template->blocks->{INIT}) {
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148 $this->context->process($init);
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149 }
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150 }
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151 }
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152
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153 sub CloneContext {
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154 my ($this) = @_;
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155
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156 $this->context->localise();
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157
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158 my $args = { %{$this->context} };
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159 delete $args->{CONFIG};
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160
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161 $this->context->delocalise();
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162
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163 return Template::Context->new($args);
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164 }
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165
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166 sub Render {
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167 my ($this, $args) = @_;
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168
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169 return $this->new()->Render($args);
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170 }
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171
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172 sub save {
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173 die new IMPL::NotImplementedException("This class doesn't support serialization");
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174 }
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175
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176 sub restore {
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177 die new IMPL::NotImplementedException("This class doesn't support serialization");
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178 }
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179
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180 1;
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181
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182 __END__
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183
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184 =pod
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185
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186 =head1 NAME
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187
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188 C<IMPL::Web::View::TTFactory> - фабрика элементов управления
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189
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190 =head1 SYNOPSIS
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191
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192 =begin code
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193
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194 my $factory = new IMPL::Web::View::TTFactory(
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195 'IMPL::Web::View::TTControl',
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196 $doc,
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197 $context,
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198 {
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199 TRIM => 1
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200 },
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201 {
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202 myprop => 'my value'
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203 },
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204 );
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205
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206 my $input1 = $factory->new('login', { class => "required" } );
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207
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208 my $propval = $input->nodeProperty('myprop'); # 'my value'
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209
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210 =end code
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211
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212 =begin text
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213
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214 [%
194
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215 this.appendChild(
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216 my.org.input.new('login', class = this.errors('login') ? "invalid" : "" )
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217 );
181
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218 %]
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219
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220 =end text
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221
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222 =head1 DESCRIPTION
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223
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224 C< Inherits L<IMPL::Object::Factory> >
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225
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226 =head1 MEMBERS
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227
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228 =over
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229
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230 =item C<[get,set]template>
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231
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232 Документ C<Template::Document> который описывает элемент управления. См. C<IMPL::Web::View::TTControl>.
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233
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234 =item C<[get,set]context>
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235
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236 Контекст фабрики элементов управления, в этом контексте выполняет шаблон элемента управления при загрузке.
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237 Далее в этом контексте будет выполнен блок инициализации при создании первого элемента управления.
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238
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239 =item C<[get,set]opts>
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240
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241 Параметры контекста элемента управления (ссылка на хеш). Каждый элемент управления при создании получает свой контекст,
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242 который создает с данными параметрами и хранилищем переменных, дочерним к контексту фабрики.
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243
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244 =item C<[get,set]nodeProperties>
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245
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246 Ссылка на хеш со значениями свойств по умолчанию для создаваемого элемента управления.
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247
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248 =item C<[get]instances>
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249
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250 Количество созданных элементов управления данной фабрикой
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251
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252 =item C<[override]MergeParameters($name,$nodeProps)>
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253
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254 Превращает значения переданные методу C<new> фабрики в параметры для создания элемента управления.
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255
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256 =over
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257
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258 =item C<$name>
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259
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260 Имя создаваемого узла (C<nodeName>).
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261
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262 =item C<$nodeProps>
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263
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264 Ссылка на шех со значениями свойств узла. Данные значения будут совмещены со значениями из свойства C<nodeProperties>
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265
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266 =back
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267
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268 =item C<[override]CreateObject(@params)>
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269
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270 Создает экземпляр элемента управления стандартным образом. Учитывает количество экземпляров и если это первый,
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271 то производит дополнительную инициализацию контекста выполнив блок шаблона C<INIT>.
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272
191
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273 =item C<[inherited]new($name,$nodeProps)>
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274
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275 Создает элемент управления с указанным именем и набором свойств.
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276
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277 =back
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278
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279 =cut