annotate Lib/IMPL/Web/View/TTControl.pm @ 267:bbc0da7ef90e

*IMPL::Web::View refactoring
author cin
date Thu, 17 Jan 2013 02:39:44 +0400
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1 package IMPL::Web::View::TTControl;
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2 use strict;
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3
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4 use IMPL::Const qw(:prop);
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5 use IMPL::lang qw(:hash);
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6 use Scalar::Util qw(blessed);
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7 use IMPL::declare {
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8 require => {
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9 TTContext => 'Template::Context',
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10 Exception => 'IMPL::Exception',
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11 ArgumentException => '-IMPL::InvalidArgumentException',
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12 OperationException => '-IMPL::InvalidOperationException'
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13 },
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14 base => [
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15 'IMPL::Object' => undef
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16 ],
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17 props => [
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18 id => PROP_RO,
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19 attributes => PROP_RW,
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20 name => PROP_RO,
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21 context => PROP_RO,
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22 template => PROP_RO
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23 ]
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24 };
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25
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26
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27 {
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28 my $nextId = 1;
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29 sub _GetNextId {
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30 return $nextId++;
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31 }
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32 }
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33
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34 our $AutoloadRegex = qr/^[a-z]/;
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35 our @REFLECT_META = qw(title layout);
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36
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37 sub CTOR {
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38 my ($this,$name,$template,$context,$refProps) = @_;
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39
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40 $name ||= "control";
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41
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42 $this->template( $template ) or die new IMPL::ArgumentException("A template is required");
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43 $this->context( $context ) or die new IMPL::ArgumentException("A context is required");
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44
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45 $this->id($name . "-" . _GetNextId()) unless $this->id;
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46
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47 $this->name($name);
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48 $this->attributes({});
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49
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50 my %attrs;
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51
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52 foreach my $meta ( @REFLECT_META ) {
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53 next if $meta =~ /^_/;
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54 if( my $value = $template->$meta() ) {
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55 $attrs{$meta} = $value;
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56 }
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57 }
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58
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59 hashApply(\%attrs,$refProps) if ref $refProps eq 'HASH';
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60
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61 while (my($key,$value) = each %attrs) {
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62 $this->SetAttribute($key,$value);
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63 }
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64 }
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65
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66 sub InitInstance {
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67 my ($this,$args) = @_;
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68
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69 $args ||= {};
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70
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71 if ( my $ctor = $this->template->blocks->{CTOR} ) {
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72 $this->context->include($ctor, { %$args, this => $this, template => $this->template } );
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73 }
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74 }
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75
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76 sub GetAttribute {
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77 my ($this,$name) = (shift,shift);
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78
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79 if (my $method = $this->can($name)) {
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80 unshift @_,$this;
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81 goto &$method;
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82 } else {
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83 return $this->attributes->{$name};
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84 }
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85 }
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86
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87 sub SetAttribute {
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88 my $this = shift;
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89 my $name = shift;
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90
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91 if (my $method = $this->can($name)) {
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92 unshift @_, $this;
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93 goto &$method;
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94 } else {
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95 return $this->attributes->{$name} = shift;
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96 }
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97 }
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98
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99 sub GetMainBlock {
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100 $_[0]->template->blocks->{RENDER} || $_[0]->template;
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101 }
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102
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103 sub Render {
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104 my ($this,$args) = @_;
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105
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106 $args = {} unless ref $args eq 'HASH';
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107
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108 if(my $body = $this->GetMainBlock ) {
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109 return $this->context->include( $body, { %$args, this => $this, template => $this->template } );
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110 } else {
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111 return "";
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112 }
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113 }
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114
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115 sub RenderBlock {
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116 my ($this,$block, $args) = @_;
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117
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118 $args = {} unless ref $args eq 'HASH';
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119
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120 return $this->context->include( $block, { %$args, this => $this, template => $this->template } );
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121 }
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122
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123 sub AUTOLOAD {
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124 our $AUTOLOAD;
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125
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126 my $method = ($AUTOLOAD =~ m/(\w+)$/)[0];
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127
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128 return if $method eq 'DESTROY';
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129
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130 if ($method =~ /$AutoloadRegex/) {
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131 my $this = shift;
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132
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133 die OperationException->new("can't invoke method '$method' on an unblessed reference") unless blessed $this;
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134
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135 return @_ ? $this->SetAttribute($method,@_) : $this->GetAttribute($method);
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136 } else {
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137 die OperationException->new("The specified method '$method' doesn't exists");
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138 }
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139 }
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140
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141 1;
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142
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143 __END__
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144
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145 =pod
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146
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147 =head1 NAME
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148
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149 C<IMPL::Web::View::TTControl>
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150
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151 =head1 SYNPOSIS
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152
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153 =begin text
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154
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155 [%
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156 META version = 1;
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157 BLOCK INIT;
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158 # this is a document scope
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159 dojo.require.push( 'dijit/form/Input' );
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160 END;
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161 BLOCK CTOR;
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162 # local to this block
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163 TPreview = require('My/Org/TextPreview');
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164
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165 # init control props
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166 this.dojoClass = this.dojoClass || 'dijit.form.Input';
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167 this.visualClass = this.visualClass || 'classic';
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168 this.childNodes = [];
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169
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170 # init content
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171 FOREACH text IN this.data;
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172 this.childNodes.push( TPreview.new('preview', nodeValue = text ) );
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173 END;
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174
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175 END;
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176 %]
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177
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178 <div class="$this.visualClass" data-dojo-type="$this.dojoClass">
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179 [% FOREACH node IN this.childNodes %]
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180 [% node.Render() %]
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181 <hr />
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182 [% END %]
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183 </div>
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184
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185 =end text
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186
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187 =head1 DESCRIPTION
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188
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189 Представляет собой фрагмент документа, который имеет шаблон для отображения,
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190 набор свойств и т.п.
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191
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192 =head2 BLOCKS
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193
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194 =head3 META
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195
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196 Атрибуты C<META> C<layout>, C<title> будут перенесены в свойства элемента
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197 управления.
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198
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199 =head3 INIT
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200
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201 Данный блок шаблона управления выполняется один раз при создании первого
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202 экземпляра элемента управления, в пространстве имен документа. Может
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203 использоваться для формирования заголовочной части документа, скрипта
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204 подключающего C<js> модули и т.п.
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205
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206 Выполнение данного блока производится фабрикой элементов управления.
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207
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208 =head3 CTOR
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209
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210 данный блок выполняется каждый раз при создании нового экземпляра элемента
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211 управления, при этом переменная C<this> указывает на эземпляр элемента
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212 упарвления. Данный блок можно использовать для инициализации свойств элемента
213
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213 управления.
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214
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215 =head3 RENDER
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216
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217 Данный блок выполняется при вызове метода C<Render()>, вывод данного блока и
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218 есть результат отображения элемента управления. Если в шаблоне нет блока
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219 C<RENDER>, то сам шаблон считается таковым.
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220
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221 =head2 TEMPLATE VARS
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222
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223 Каждый шаблон имеет собственное пространство имен, вложенное в пространство имен
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224 фабрики элементов (которая разделяет пространство имен документа). В шаблоне
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225 могут определяться новые переменные, однако они останутся локальными для блоков.
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226
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227 Чтобы передать данные между блоками следует использовать ссылку на элемент
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228 управления C<this>.
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229
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230 =begin text
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231
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232 [%
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233 BLOCK CTOR;
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234 this.extraCssClass = 'active';
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235 text = "this text will gone";
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236 END;
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237 %]
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238
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239 <div class="$this.extraCssClass">some text $text</div>
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240
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241 =end text
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242
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243 В примере выше переменная C<$text> установленная в конструкторе шаблона, при
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244 отображении элемента управления будет неопределена.
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245
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246 =over
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247
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248 =item * C<this>
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249
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250 ссылка на объект элемента управления
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251
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252 =item * C<component>
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253
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254 ссылка на текущий шаблон, устанавливается автоматически в методе
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255 C<Template::Context::process>.
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256
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257 =item * C<template>
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258
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259 ссылка на шаблон элемента управления, для совместимости с C<TT>
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260
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261 =back
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262
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263 =head1 MEMBERS
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264
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265 =over
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266
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267 =item * C<[get]context>
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268
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269 Контекст элемента управления, хранит пременные шаблона. Передается в
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270 конструкторе. Фабрика элементов управления создает новый контекст пространство
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271 имен которого вложено в пространство имен документа.
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272
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273 =item * C<[get,set]template>
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274
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275 C<Template::Document> Шаблон элемента управления.
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276
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277 =item * C<AUTOLOAD>
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278
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279 Для удобства работы с шаблоном, элементы управления предоставляю доступ к своим
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280 свойствам через метод C<AUTOLOAD>. Имена свойств должны начинаться со строчной
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281 буквы.
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282
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283 =back
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285 =cut