annotate Lib/IMPL/Web/View/TTControl.pm @ 298:78f767765706

TT view refactoring
author cin
date Tue, 19 Mar 2013 02:02:37 +0400
parents 86ff93b34f2a
children bd79145657e5
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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 TemplateDocument => 'Template::Document',
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10 TTContext => 'Template::Context',
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11 Exception => 'IMPL::Exception',
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12 ArgumentException => '-IMPL::InvalidArgumentException',
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13 OperationException => '-IMPL::InvalidOperationException'
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14 },
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15 base => [
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16 'IMPL::Object' => undef
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17 ],
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18 props => [
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19 id => PROP_RO,
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20 attributes => PROP_RW,
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21 name => PROP_RO,
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22 context => PROP_RO,
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23 template => PROP_RO
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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 {
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29 my $nextId = 1;
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30 sub _GetNextId {
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31 return $nextId++;
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32 }
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33 }
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34
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35 our $AutoloadRegex = qr/^[a-z]/;
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36 our @REFLECT_META = qw(title layout);
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37
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38 sub CTOR {
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39 my ($this,$name,$template,$context,$refProps) = @_;
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40
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41 $name ||= "control";
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42
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43 $this->template( $template ) or die new IMPL::ArgumentException("A template is required");
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44 $this->context( $context ) or die new IMPL::ArgumentException("A context is required");
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45
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46 $this->id($name . "-" . _GetNextId()) unless $this->id;
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47
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48 $this->name($name);
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49 $this->attributes({});
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50
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51 my %attrs;
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52
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53 foreach my $meta ( @REFLECT_META ) {
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54 next if $meta =~ /^_/;
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55 if( my $value = $template->$meta() ) {
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56 $attrs{$meta} = $value;
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57 }
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58 }
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59
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60 hashApply(\%attrs,$refProps) if ref $refProps eq 'HASH';
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61
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62 while (my($key,$value) = each %attrs) {
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63 $this->SetAttribute($key,$value);
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64 }
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65 }
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66
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67 sub InitInstance {
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68 my ($this,$args) = @_;
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69
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70 $args ||= {};
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71
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72 if ( my $ctor = $this->template->blocks->{CTOR} ) {
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73 $this->context->include($ctor, { %$args, this => $this, template => $this->template } );
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74 }
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75 }
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76
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77 sub GetAttribute {
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78 my ($this,$name) = (shift,shift);
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79
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80 if (my $method = $this->can($name)) {
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81 unshift @_,$this;
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82 goto &$method;
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83 } else {
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84 return $this->attributes->{$name};
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85 }
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86 }
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87
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88 sub SetAttribute {
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89 my $this = shift;
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90 my $name = shift;
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91
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92 if (my $method = $this->can($name)) {
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93 unshift @_, $this;
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94 goto &$method;
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95 } else {
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96 return $this->attributes->{$name} = shift;
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97 }
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98 }
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99
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100 sub GetMainBlock {
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101 $_[0]->template->blocks->{RENDER} || $_[0]->template;
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102 }
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103
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104 sub Render {
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105 my ($this,$args) = @_;
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106
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107 $args = {} unless ref $args eq 'HASH';
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108
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109 if(my $body = $this->GetMainBlock ) {
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110 return $this->context->include( $body, { %$args, this => $this, template => $this->template } );
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111 } else {
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112 return "";
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113 }
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114 }
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115
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116 sub RenderBlock {
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117 my ($this, $block, $args) = @_;
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118
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119 $args = {} unless ref $args eq 'HASH';
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120
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121 return $block ? $this->context->include( $block, { %$args, this => $this, template => $this->template } ) : undef;
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122 }
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123
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124 sub ExportBlock {
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125 my ($this,$block) = @_;
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126
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127 return TemplateDocument->new({
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128 BLOCK => $this->template->blocks->{$block},
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129 DEFBLOCKS => $this->template->blocks
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130 });
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131 }
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132
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133 sub AUTOLOAD {
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134 our $AUTOLOAD;
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135
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136 my $method = ($AUTOLOAD =~ m/(\w+)$/)[0];
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137
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138 return if $method eq 'DESTROY';
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139
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140 if ($method =~ /$AutoloadRegex/) {
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141 my $this = shift;
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142
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143 die OperationException->new("can't invoke method '$method' on an unblessed reference") unless blessed $this;
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144
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145 return @_ ? $this->SetAttribute($method,@_) : $this->GetAttribute($method);
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146 } else {
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147 die OperationException->new("The specified method '$method' doesn't exists");
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148 }
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149 }
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150
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151 1;
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152
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153 __END__
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154
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155 =pod
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156
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157 =head1 NAME
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158
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159 C<IMPL::Web::View::TTControl>
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160
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161 =head1 SYNPOSIS
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162
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163 =begin text
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164
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165 [%
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166 META version = 1;
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167 BLOCK INIT;
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168 # this is a document scope
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169 dojo.require.push( 'dijit/form/Input' );
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170 END;
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171 BLOCK CTOR;
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172 # local to this block
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173 TPreview = require('My/Org/TextPreview');
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174
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175 # init control props
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176 this.dojoClass = this.dojoClass || 'dijit.form.Input';
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177 this.visualClass = this.visualClass || 'classic';
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178 this.childNodes = [];
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179
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180 # init content
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181 FOREACH text IN this.data;
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182 this.childNodes.push( TPreview.new('preview', nodeValue = text ) );
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183 END;
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184
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185 END;
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186 %]
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187
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188 <div class="$this.visualClass" data-dojo-type="$this.dojoClass">
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189 [% FOREACH node IN this.childNodes %]
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190 [% node.Render() %]
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191 <hr />
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192 [% END %]
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193 </div>
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194
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195 =end text
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196
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197 =head1 DESCRIPTION
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198
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199 Представляет собой фрагмент документа, который имеет шаблон для отображения,
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200 набор свойств и т.п.
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201
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202 =head2 BLOCKS
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203
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204 =head3 META
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205
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206 Атрибуты C<META> C<layout>, C<title> будут перенесены в свойства элемента
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207 управления.
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208
181
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209 =head3 INIT
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210
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211 Данный блок шаблона управления выполняется один раз при создании первого
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212 экземпляра элемента управления, в пространстве имен документа. Может
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213 использоваться для формирования заголовочной части документа, скрипта
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214 подключающего C<js> модули и т.п.
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215
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216 Выполнение данного блока производится фабрикой элементов управления.
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217
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218 =head3 CTOR
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219
265
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220 данный блок выполняется каждый раз при создании нового экземпляра элемента
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221 управления, при этом переменная C<this> указывает на эземпляр элемента
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222 упарвления. Данный блок можно использовать для инициализации свойств элемента
213
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223 управления.
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224
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225 =head3 RENDER
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226
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227 Данный блок выполняется при вызове метода C<Render()>, вывод данного блока и
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228 есть результат отображения элемента управления. Если в шаблоне нет блока
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229 C<RENDER>, то сам шаблон считается таковым.
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230
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231 =head2 TEMPLATE VARS
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232
265
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233 Каждый шаблон имеет собственное пространство имен, вложенное в пространство имен
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234 фабрики элементов (которая разделяет пространство имен документа). В шаблоне
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235 могут определяться новые переменные, однако они останутся локальными для блоков.
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236
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237 Чтобы передать данные между блоками следует использовать ссылку на элемент
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238 управления C<this>.
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239
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240 =begin text
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241
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242 [%
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243 BLOCK CTOR;
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244 this.extraCssClass = 'active';
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245 text = "this text will gone";
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246 END;
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247 %]
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248
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249 <div class="$this.extraCssClass">some text $text</div>
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250
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251 =end text
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252
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253 В примере выше переменная C<$text> установленная в конструкторе шаблона, при
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254 отображении элемента управления будет неопределена.
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255
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256 =over
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257
265
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258 =item * C<this>
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259
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260 ссылка на объект элемента управления
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261
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262 =item * C<component>
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263
265
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264 ссылка на текущий шаблон, устанавливается автоматически в методе
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265 C<Template::Context::process>.
187
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266
265
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267 =item * C<template>
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268
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269 ссылка на шаблон элемента управления, для совместимости с C<TT>
187
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270
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271 =back
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272
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273 =head1 MEMBERS
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274
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275 =over
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276
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277 =item * C<[get]context>
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278
265
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279 Контекст элемента управления, хранит пременные шаблона. Передается в
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280 конструкторе. Фабрика элементов управления создает новый контекст пространство
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281 имен которого вложено в пространство имен документа.
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282
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283 =item * C<[get,set]template>
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284
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285 C<Template::Document> Шаблон элемента управления.
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286
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287 =item * C<AUTOLOAD>
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288
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289 Для удобства работы с шаблоном, элементы управления предоставляю доступ к своим
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290 свойствам через метод C<AUTOLOAD>. Имена свойств должны начинаться со строчной
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291 буквы.
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292
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293 =back
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294
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295 =cut