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annotate Lib/IMPL/Web/Handler/TTView.pm @ 229:47f77e6409f7

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heavily reworked the resource model of the web application: *some ResourcesContraact functionality moved to Resource +Added CustomResource *Corrected action handlers
author sergey
date Sat, 29 Sep 2012 02:34:47 +0400
parents c8fe3f84feba
children 3cebcf6fdb9b
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1 package IMPL::Web::Handler::TTView;
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2 use strict;
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3
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4 use List::Util qw(first);
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5 use IMPL::lang qw(:declare :constants);
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6 use IMPL::declare {
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7 require => {
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8 Factory => 'IMPL::Object::Factory',
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9 HttpResponse => 'IMPL::Web::HttpResponse'
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10 },
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11 base => [
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12 'IMPL::Object' => undef,
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13 'IMPL::Object::Autofill' => '@_',
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14 'IMPL::Object::Serializable' => undef
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15 ],
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16
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17 props => [
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18 contentType => PROP_GET | PROP_OWNERSET,
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19 contentCharset => PROP_GET | PROP_OWNERSET,
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20 loader => PROP_GET | PROP_OWNERSET,
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21 selectors => PROP_GET | PROP_LIST | PROP_OWNERSET,
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22 defaultDocument => PROP_ALL,
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23 indexResource => PROP_ALL,
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24 _selectorsCache => PROP_ALL,
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25 _classTemplates => PROP_ALL
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26 ]
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27 };
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28
229
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29 sub CTOR {
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30 my ($this) = @_;
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31
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32 $this->indexResource('index') unless $this->indexResource;
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33 }
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34
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35 sub Invoke {
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36 my ( $this, $action, $next ) = @_;
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37
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38 my $result = $next ? $next->($action) : undef;
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39
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40 my $vars = {
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41 data => $result,
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42 action => $action,
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43 app => $action->application,
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44 LoadFactory => sub {
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45 my $class = shift;
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46
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47 my $module = $class;
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48
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49 $module =~ s/::/\//g;
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50 $module .= ".pm";
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51
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52 require $module;
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53 return Factory->new($class);
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54 }
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55 };
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56
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57 my $doc =
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58 $this->loader->document( $this->SelectView( $action, ref $result ),
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59 $vars );
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60
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61 return HttpResponse->new(
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62 type => $this->contentType,
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63 charset => $this->contentCharset,
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64 body => $doc->Render($vars)
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65 );
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66 }
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67
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68 sub SelectView {
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69 my ( $this, $action, $class ) = @_;
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70
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71 my @path = split /\//, $action->query->path_info(), -1;
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72
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73 shift @path; # remove always empty leading segment
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74
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75 my $last = pop @path;
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76 $last =~ s/\.\w+$//;
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77 $last ||= $this->indexResource;
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78 push @path, $last;
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79
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80 $this->BuildCache unless $this->_selectorsCache;
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81 my $cache = $this->_selectorsCache;
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82
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83 @path = reverse @path;
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84
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85 foreach
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86 my $subclass ( $class ? ( _GetHierarchy($class), '-default' ) : '-plain' )
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87 {
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88 my @results;
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89 push @results,
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90 { result => $this->_classTemplates->{$subclass}, level => 0 }
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91 if $this->_classTemplates->{$subclass};
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92 if ( $cache->{$subclass} ) {
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93 my $alternatives =
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94 [ { selector => $cache->{$subclass}, immediate => 1 } ];
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95 $alternatives =
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96 $this->MatchAlternatives( $_, $alternatives, \@results )
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97 foreach @path;
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98 }
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99
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100 if (@results) {
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101 @results = sort { $b->{level} <=> $a->{level} } @results;
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102 return ( shift @results )->{result};
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103 }
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104 }
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105
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106 return $this->defaultDocument;
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107 }
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108
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109 sub _GetHierarchy {
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110 my ($class) = @_;
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111 return unless $class;
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112
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113 no strict 'refs';
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114
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115 return $class, map { _GetHierarchy($_) } @{"${class}::ISA"};
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116 }
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117
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118 sub BuildCache {
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119 my ($this) = @_;
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120
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121 my @selectors;
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122
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123 my $cache = $this->_selectorsCache( {} );
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124 $this->_classTemplates( {} );
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125
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126 foreach my $selector ( $this->selectors ) {
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127 if ( not ref $selector ) {
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128
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129 my ( $path, $data ) = split( /\s*=>\s*/, $selector );
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130
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131 my @path = split( /\s+/, $path );
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132
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133 my $class;
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134
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135 # if this selector has a class part
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136 if ( $path[$#path] =~ m/^\@(.*)/ ) {
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137 $class = $1;
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138 pop @path;
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139 }
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140 else {
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141 $class = '-default';
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142 }
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143
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144 #if this selector has a path
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145 if (@path) {
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146 @path = reverse @path;
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147 my $last = pop @path;
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148 my $t = ( $cache->{$class} ||= {} );
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149 my $level = 1;
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150 foreach my $prim (@path) {
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151 $t = ( $t->{$prim}->{next} ||= {} );
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152 $level++;
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153 }
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154 $t->{$last}->{level} = $level;
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155 $t->{$last}->{data} = $data;
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156
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157 }
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158 else {
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159
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160 # we dont have a selector, only class
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161
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162 $this->_classTemplates->{$class} = $data;
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163 }
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164
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165 }
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166 }
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167 }
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168
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169 sub MatchAlternatives {
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170 my ( $this, $segment, $alternatives, $results ) = @_;
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171
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172 my @next;
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173
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174 foreach my $alt (@$alternatives) {
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175 while ( my ( $selector, $match ) = each %{ $alt->{selector} } ) {
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176
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177 my $context = {
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178 vars => \%{ $alt->{vars} || {} },
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179 selector => $match->{next}
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180 };
229
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181
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182 if ( $selector =~ s/^>// ) {
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183 $context->{immediate} = 1;
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184 }
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185
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186 if ( my ( $name, $rx ) =
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187 ( $selector =~ m/^\{(?:(\w+)\:)?(.*)\}$/ ) )
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188 {
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189
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190 #this is a regexp
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191
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192 if ( my @captures = ( $segment =~ m/($rx)/ ) ) {
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193 $context->{success} = 1;
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194
203
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195 if ($name) {
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196 $context->{vars}->{$name} = \@captures;
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197 }
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198 }
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199 }
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200 else {
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201
203
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202 #this is a segment name
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203 if ( $segment eq $selector ) {
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204 $context->{success} = 1;
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205 }
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206 }
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207
203
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208 # test if there were a match
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209 if ( delete $context->{success} ) {
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210 if ( my $data = $match->{data} ) {
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211
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212 # interpolate data
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213 $data =~ s/{(\w+)(?:\:(\d+))?}/
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214 my ($name,$index) = ($1,$2 || 0);
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215
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216 if ($context->{vars}{$name}) {
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217 $context->{vars}{$name}[$index];
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218 } else {
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219 "";
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220 }
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221 /gex;
229
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222
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223 push @$results,
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224 { level => $match->{level}, result => $data };
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225 }
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226 push @next, $context if $context->{selector};
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227 }
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228 else {
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229
203
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230 #repeat current alternative if it's not required to be immediate
229
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231 push @next,
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232 {
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233 selector => { $selector, $match },
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234 vars => $alt->{vars}
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235 }
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236 unless $alt->{immediate};
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237 }
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238 }
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239 }
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240
203
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241 return \@next;
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242 }
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243
199
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244 1;
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245
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246 __END__
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247
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248 =pod
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249
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250 =head1 NAME
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251
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252 C<IMPL::Web::Handler::TTView> - использует шаблоны для построения представления.
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253
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254 =head1 SYNOPSIS
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255
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256 =begin code xml
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257
206
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258 <item id="html-view" type="IMPL::Web::Handler::TTView">
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259 <contentType>text/html</contentType>
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260 <loader id="tt-loader" type="IMPL::Web::View::TTLoader">
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261 <options type="HASH">
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262 <INCLUDE_PATH type="IMPL::Config::Reference">
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263 <target>IMPL::Config</target>
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264 <AppBase>view</AppBase>
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265 </INCLUDE_PATH>
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266 <INTERPOLATE>1</INTERPOLATE>
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267 <POST_CHOMP>1</POST_CHOMP>
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268 <ENCODING>utf-8</ENCODING>
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269 </options>
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270 <ext>.tt</ext>
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271 <initializer>global.tt</initializer>
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272 <layoutBase>layouts</layoutBase>
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273 </loader>
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274 <defaultDocument>default</defaultDocument>
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275 <selectors type="ARRAY">
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276 <item>@HASH => dump</item>
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277 <item>@My::Data::Product => product/info</item>
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278 <item>{action:.*} @My::Data::Product => product/{action}</item>
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279 </selectors>
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280 </item>
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281
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282 =end code xml
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283
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284 =head1 DESCRIPTION
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285
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286 Подбирает шаблон для представления результата, полученного при выполнении следующего обработчика. При
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287 выборе используется принцип похожий на селекторы C<CSS>, основывающийся на именах ресурсов и их типах
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288 данных.
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289
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290 =head1 SELECTORS
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291
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292 =begin text
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293
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294 [url-template] [class] => template
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295
206
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296 shoes => product/list
199
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297 {action:*.} @My::Data::Product => product/{action}
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298
206
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299 stuff >list => product/list
204
d63f9a92d6d4 +IMPL::Config::Include - simple way to include external config
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300 details => product/details
203
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301
199
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302 =end text
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303
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304
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305 =cut
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306