annotate Lib/IMPL/Web/View/TTFactory.pm @ 296:86ff93b34f2a

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author cin
date Tue, 05 Mar 2013 01:46:32 +0400
parents 5d14baa35790
children 78f767765706
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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 IMPL::lang qw(:hash);
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7 use IMPL::Exception();
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8 use Scalar::Util qw(weaken);
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9
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10
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11 use IMPL::Const qw(:prop);
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12 use IMPL::declare {
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13 base => [
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14 'IMPL::Object::Factory' => '@_'
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15 ],
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16 props => [
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17 template => PROP_RW,
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18 context => PROP_RW,
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19 instances => PROP_RW,
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20 base => PROP_RW,
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21 require => PROP_RO
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22 ]
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23 };
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24
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25 sub CTOR {
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26 my ($this,$factory,$template,$context,$base,$require) = @_;
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27
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28 die IMPL::ArgumentException("A template is required") unless $template;
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29
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30 $context ||= new Template::Context();
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31
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32 $this->template($template);
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33 $this->context($context);
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34 $this->base($base);
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35 $this->instances(0);
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36 $this->require($require);
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37 }
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38
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39 our %CTOR = (
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40 'IMPL::Object::Factory' => sub {
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41 $_[0]
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42 }
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43 );
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44
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45 sub MergeParameters {
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46 my ($this,$name,$refProps) = @_;
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47
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48 if (ref $name) {
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49 $refProps = $name;
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50 $name = (ref $refProps eq 'HASH' and ($refProps->{name} || $refProps->{id})) || '*anonymous*';
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51 }
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52
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53 my $base = $this->base;
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54
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55 $this->context->localise();
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56
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57 my $ctx = _clone_context($this->context);
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58
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59 $this->context->delocalise();
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60
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61 my $stash = $ctx->stash;
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62 my $require = $this->require;
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63
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64
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65 $stash->update({
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66 require => sub {
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67 my ($module) = @_;
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68
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69 $module =~ s/^\.\//$base\//;
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70 return $require->($module);
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71 }
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72 });
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73
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74 return ($name, $this->template, $ctx, $refProps);
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75 }
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76
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77 sub CreateObject {
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78 my $this = shift;
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79
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80 my $count = $this->instances;
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81
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82 unless($count) {
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83 # нужно выполнить именно блок INIT шаблона при создании первого экземпляра
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84 if (my $init = $this->template->blocks->{INIT}) {
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85 $this->context->process($init);
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86 }
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87
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88 $this->context->visit($this->template->blocks);
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89 }
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90
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91 my $instance = $this->SUPER::CreateObject(@_);
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92
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93 $instance->InitInstance();
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94
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95 $count++;
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96 $this->instances($count);
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97
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98 return $instance;
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99 }
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100
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101 sub _clone_context {
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102 my $args = { %{shift || {}} };
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103 delete $args->{CONFIG};
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104
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105 return Template::Context->new($args);
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106 }
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107
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108 sub save {
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109 die new IMPL::NotImplementedException("This class doesn't support serialization");
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110 }
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111
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112 sub restore {
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113 die new IMPL::NotImplementedException("This class doesn't support serialization");
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114 }
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115
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116 1;
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117
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118 __END__
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119
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120 =pod
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121
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122 =head1 NAME
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123
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124 C<IMPL::Web::View::TTFactory> - фабрика элементов управления
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125
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126 =head1 SYNOPSIS
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127
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128 =begin code
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129
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130 my $factory = new IMPL::Web::View::TTFactory(
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131 'IMPL::Web::View::TTControl',
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132 $doc,
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133 $context,
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134 {
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135 TRIM => 1
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136 },
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137 {
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138 myprop => 'my value'
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139 },
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140 );
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141
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142 my $input1 = $factory->new('login', { class => "required" } );
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143
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144 my $propval = $input->nodeProperty('myprop'); # 'my value'
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145
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146 =end code
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147
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148 =begin text
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149
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150 [%
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151 this.appendChild(
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152 my.org.input.new('login', class = this.errors('login') ? "invalid" : "" )
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153 );
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154 %]
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155
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156 =end text
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157
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158 =head1 DESCRIPTION
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159
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160 C< Inherits L<IMPL::Object::Factory> >
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161
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162 =head1 MEMBERS
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163
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164 =over
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165
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166 =item C<[get,set]template>
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167
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168 Документ C<Template::Document> который описывает элемент управления. См. C<IMPL::Web::View::TTControl>.
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169
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170 =item C<[get,set]context>
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171
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172 Контекст фабрики элементов управления, в этом контексте выполняет шаблон элемента управления при загрузке.
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173 Далее в этом контексте будет выполнен блок инициализации при создании первого элемента управления.
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174
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175 =item C<[get,set]opts>
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176
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177 Параметры контекста элемента управления (ссылка на хеш). Каждый элемент управления при создании получает свой контекст,
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178 который создает с данными параметрами и хранилищем переменных, дочерним к контексту фабрики.
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179
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180 =item C<[get,set]nodeProperties>
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181
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182 Ссылка на хеш со значениями свойств по умолчанию для создаваемого элемента управления.
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183
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184 =item C<[get]instances>
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185
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186 Количество созданных элементов управления данной фабрикой
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187
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188 =item C<[override]MergeParameters($name,$nodeProps)>
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189
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190 Превращает значения переданные методу C<new> фабрики в параметры для создания элемента управления.
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191
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192 =over
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193
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194 =item C<$name>
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195
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196 Имя создаваемого узла (C<nodeName>).
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197
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198 =item C<$nodeProps>
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199
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200 Ссылка на шех со значениями свойств узла. Данные значения будут совмещены со значениями из свойства C<nodeProperties>
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201
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202 =back
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203
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204 =item C<[override]CreateObject(@params)>
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205
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206 Создает экземпляр элемента управления стандартным образом. Учитывает количество экземпляров и если это первый,
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207 то производит дополнительную инициализацию контекста выполнив блок шаблона C<INIT>.
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208
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209 =item C<[inherited]new($name,$nodeProps)>
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210
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211 Создает элемент управления с указанным именем и набором свойств.
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212
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213 =back
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214
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215 =cut