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annotate Lib/IMPL/Web/View/TTContext.pm @ 354:9330835535b9

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fixed view double rendering
author cin
date Wed, 16 Oct 2013 17:28:40 +0400
parents feeb3bc4a818
children 8dfb9df07d02
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package IMPL::Web::View::TTContext;
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2 use strict;
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3 use Template::Base;
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4 use Carp qw(carp);
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5 use File::Spec();
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6 use IMPL::Resources::Format qw(FormatMessage);
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7 use IMPL::Resources::Strings();
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8
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9 use IMPL::Exception();
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10 use IMPL::lang qw(is typeof hashApply hashMerge);
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11 use IMPL::declare {
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12 require => {
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13 Document => '-Template::Document',
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14 TypeKeyedCollection => 'IMPL::TypeKeyedCollection',
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15 ArgException => '-IMPL::InvalidArgumentException',
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16 Resources => 'IMPL::Resources',
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17 Loader => 'IMPL::Code::Loader'
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18 },
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19 base => [
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20 'Template::Context' => '@_'
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21 ]
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22 };
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23
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24 BEGIN {
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25 no strict 'refs';
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26 foreach my $prop (qw(
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27 root
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28 base
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29 tt_ext
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30 tt_cache
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31 parent
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32 prefix
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33 cache
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34 includes
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35 modules
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36 aliases
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37 resolver
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38 )) {
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39 my $t = $prop;
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40
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41 *{__PACKAGE__ . '::' . $prop} = sub {
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42 my $this = shift;
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43 return @_ ? $this->stash->set($t, @_) : $this->stash->get($t);
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44 }
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45 }
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46 }
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47
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48 sub clone {
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49 my $this = shift;
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50 my $params = shift;
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51
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52 $this->localise();
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53
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54 my $args = { %{$this} };
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55
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56 $this->delocalise();
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57
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58 my $class = ref($this);
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59
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60 delete $args->{CONFIG};
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61
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62 my $clone = $class->new($args);
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63
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64 $clone->stash->update($params) if $params;
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65
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66 return $clone;
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67 }
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68
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69 sub find_template {
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70 my ($this,$name) = @_;
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71
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72 my $cache = $this->tt_cache;
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73
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74 $this->tt_cache($cache = {}) unless $cache;
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75
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76 if(my $tpl = $cache->{$name}) {
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77 return $tpl;
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78 }
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79
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80 my @inc = ($this->base, @{$this->includes || []});
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81
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82 my $ext = $this->tt_ext || "";
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83
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84 my $file;
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85
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86 foreach my $dir (@inc) {
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87 $file = $dir ? "$dir/$name" : $name;
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88
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89 my $base = join('/',splice([split(/\/+/,$file)],0,-1));
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90
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91 $file = $ext ? "$file.$ext" : $file;
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92
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93 if (exists($this->modules->{$file})) {
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94 my $info = $this->modules->{$file};
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95 return $cache->{$name} = $info
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96 if $info;
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97 } else {
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98 if( my $tt = eval { $this->template($file) } ) {
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99 my $class;
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100 if ($class = $tt->class) {
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101 $class = $this->aliases->{$class} || $class;
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102 Loader->safe->Require($class);
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103 }
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104 my $info = {
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105 base => $base,
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106 labels => $this->load_labels($file),
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107 template => $tt,
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108 initialized => 0,
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109 class => $class
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110 };
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111 $this->modules->{$file} = $info;
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112 return $cache->{$name} = $info;
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113 } else {
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114 my $err = $@;
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115
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116 for(my $t = $err; is($t,'Template::Exception'); $t = $t->info ) {
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117 die $err unless $t->type eq Template::Constants::ERROR_FILE;
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118 }
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119 $this->modules->{$file} = undef;
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120 }
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121 }
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122 }
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123
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124 $this->throw(Template::Constants::ERROR_FILE, "$name: not found");
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125 }
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126
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127 sub display {
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128 my $this = shift;
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129 my $model = shift;
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130 my ($template, $args);
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131
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132 if (ref $_[0] eq 'HASH') {
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133 $args = shift;
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134 } else {
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135 $template = shift;
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136 $args = shift;
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137 }
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138
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139 my $prefix = $this->prefix;
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140
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141 my $info;
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142
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143 if (not(($args and delete $args->{_no_resolve}) or ref $model)) {
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144 $info = $this->resolve_model($model,$args);
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145 } else {
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146 $info = {
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147 model => $model,
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148 prefix => ""
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149 };
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150 }
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151
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152 $template = $template ? $this->find_template($template) : $this->find_template_for($info->{model});
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153
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154 return $this->render(
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155 $template,
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156 hashApply(
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157 $info,
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158 $args
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159 )
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160 );
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161 }
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162
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163 sub display_model {
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164 my $this = shift;
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165 my $model = shift;
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166 my ($template, $args);
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167
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168 if (ref $_[0] eq 'HASH') {
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169 $args = shift;
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170 } else {
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171 $template = shift;
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172 $args = shift;
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173 }
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174
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175 $args ||= {};
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176
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177 my $prefix = delete $args->{prefix} || $this->prefix;
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178
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179 if (my $rel = delete $args->{rel}) {
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180 $prefix = $prefix ? "${prefix}.${rel}" : $rel;
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181 }
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182
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183 $template = $template ? $this->find_template($template) : $this->find_template_for($model);
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184
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185 return $this->render(
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186 $template,
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187 hashApply(
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188 {
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189 prefix => $prefix,
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190 model => $model,
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191 },
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192 $args
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193 )
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194 );
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195 }
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196
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197 sub invoke_environment {
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198 my ($this,$code,$env) = @_;
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199
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200 $env ||= {};
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201
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202 my $ctx = ($this->root || $this)->clone();
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203
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204 my $out = eval {
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205 $ctx->localise(
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206 hashApply(
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207 {
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208 aliases => $this->aliases || {},
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209 root => $this->root || $ctx,
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210 modules => $this->modules || {},
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211 cache => TypeKeyedCollection->new(),
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212 display => sub {
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213 $ctx->display(@_);
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214 },
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215 render => sub {
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216 $ctx->render(@_);
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217 },
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diff changeset
218 display_model => sub {
354
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diff changeset
219 $ctx->display_model(@_);
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
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diff changeset
220 },
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diff changeset
221 tt_cache => {}
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
222 },
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
223 $env
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
224 )
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
225 );
f116cd9fe7d9 working on TTView: pre-alpha version
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226
354
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diff changeset
227 &$code($ctx);
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
228 };
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diff changeset
229
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
230 my $e = $@;
354
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diff changeset
231 $ctx->delocalise();
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
232
f116cd9fe7d9 working on TTView: pre-alpha version
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diff changeset
233 die $e if $e;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
234
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
235 return $out;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
236 }
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237
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
238 sub render {
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
239 my ($this,$template,$args) = @_;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
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240
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
241 $args ||= {};
f116cd9fe7d9 working on TTView: pre-alpha version
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242
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
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diff changeset
243 my $info = ref $template ? $template : $this->find_template($template);
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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244
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
245 if (ref($info) ne 'HASH') {
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cin
parents: 349
diff changeset
246 carp "got an invalid template object: $info (" . ref($info) . ")";
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diff changeset
247 $info = {
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diff changeset
248 template => $info,
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cin
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diff changeset
249 base => $this->base,
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cin
parents: 349
diff changeset
250 initialized => 1
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
251 };
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
252 }
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
253
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
254 return $this->invoke_environment(
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
255 sub {
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
256 my $ctx = shift;
352
675cd1829255 working on TTView: added control classes support
cin
parents: 351
diff changeset
257
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
258 unless($info->{initialized}) {
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
259 if(my $init = $info->{template}->blocks->{INIT}) {
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
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diff changeset
260 $info->{initialized} = 1;
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
261 eval {
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
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diff changeset
262 $ctx->visit($info->{template}->blocks);
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cin
parents: 349
diff changeset
263 $ctx->include($init);
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
parents: 349
diff changeset
264 };
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cin
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diff changeset
265 $ctx->leave();
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cin
parents: 349
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266 }
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cin
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267 }
352
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parents: 351
diff changeset
268
675cd1829255 working on TTView: added control classes support
cin
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diff changeset
269 if (my $class = $info->{class}) {
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cin
parents: 351
diff changeset
270 $class->new($this,$info->{template})->Render($args);
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cin
parents: 351
diff changeset
271 } else {
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cin
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diff changeset
272 return $ctx->include($info->{template},$args);
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cin
parents: 351
diff changeset
273 }
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
274 },
349
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diff changeset
275 hashMerge(
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
cin
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diff changeset
276 $info->{labels} || {},
349
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cin
parents: 348
diff changeset
277 {
351
cfd7570c2af2 working on TTView: created TTView class for rendering models
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diff changeset
278 base => $info->{base},
349
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diff changeset
279 parent => $this
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280 }
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cin
parents: 348
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281 )
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
282 )
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
283 }
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cin
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284
f116cd9fe7d9 working on TTView: pre-alpha version
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diff changeset
285 sub resolve_model {
354
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cin
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diff changeset
286 my ($this,$prefix,$args) = @_;
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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287
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288 die ArgException->new(prefix => "the prefix must be specified")
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289 unless defined $prefix;
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290
f116cd9fe7d9 working on TTView: pre-alpha version
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parents: 347
diff changeset
291 #TODO handle DOM models
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cin
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diff changeset
292
354
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cin
parents: 353
diff changeset
293 if (my $resolver = $this->resolver) {
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cin
parents: 353
diff changeset
294 return $this->$resolver($prefix,$args);
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cin
parents: 353
diff changeset
295 }
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cin
parents: 353
diff changeset
296
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
297 my @comp = map { $_, 0 } grep length($_), split(/\.|\[(\d+)\]/, $prefix);
347
cin
parents: 346
diff changeset
298
354
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cin
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diff changeset
299 return {
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cin
parents: 353
diff changeset
300 model => $this->stash->get(['model',0,@comp]),
9330835535b9 fixed view double rendering
cin
parents: 353
diff changeset
301 prefix => $this->prefix ? $this->prefix . ".$prefix" : $prefix
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cin
parents: 353
diff changeset
302 };
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
303 }
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
304
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
305 sub find_template_for {
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
306 my ($this,$model) = @_;
347
cin
parents: 346
diff changeset
307
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
308 my $type = typeof($model);
347
cin
parents: 346
diff changeset
309
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
310 return $this->find_template('templates/plain') unless $type;
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cin
parents: 347
diff changeset
311
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
312 if (my $template = $this->cache->Get($type)) {
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
313 return $template;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
314 } else {
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
315
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
316 no strict 'refs';
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cin
parents: 347
diff changeset
317
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
318 my @isa = $type;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
319
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
320 while (@isa) {
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
321 my $sclass = shift @isa;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
322
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
323 (my $name = $sclass) =~ s/:+/_/g;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
324
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
325 $template = $this->find_template("templates/$name");
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
326
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
327 if ($template) {
f116cd9fe7d9 working on TTView: pre-alpha version
cin
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diff changeset
328 $this->cache->Set($sclass,$template);
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
329 return $template;
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
330 }
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
331
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
332 push @isa, @{"${sclass}::ISA"};
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
333 }
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
334
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
335 }
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
336
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
337 return;
347
cin
parents: 346
diff changeset
338 }
cin
parents: 346
diff changeset
339
349
86b470004d47 added lables loading
cin
parents: 348
diff changeset
340 sub get_real_file {
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cin
parents: 348
diff changeset
341 my ($this,$fname) = @_;
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cin
parents: 348
diff changeset
342
86b470004d47 added lables loading
cin
parents: 348
diff changeset
343 my @path = split(/\/+/,$fname);
86b470004d47 added lables loading
cin
parents: 348
diff changeset
344
86b470004d47 added lables loading
cin
parents: 348
diff changeset
345 foreach my $provider (@{$this->load_templates || []}) {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
346 foreach my $dir (@{$provider->paths || []}) {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
347 my $realName = File::Spec->catfile($dir,@path);
86b470004d47 added lables loading
cin
parents: 348
diff changeset
348 return $realName if -f $realName;
86b470004d47 added lables loading
cin
parents: 348
diff changeset
349 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
350 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
351 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
352
86b470004d47 added lables loading
cin
parents: 348
diff changeset
353 sub load_labels {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
354 my ($this,$fname) = @_;
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cin
parents: 348
diff changeset
355
86b470004d47 added lables loading
cin
parents: 348
diff changeset
356 $fname = $this->get_real_file($fname);
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cin
parents: 348
diff changeset
357
86b470004d47 added lables loading
cin
parents: 348
diff changeset
358 my %vars;
86b470004d47 added lables loading
cin
parents: 348
diff changeset
359
86b470004d47 added lables loading
cin
parents: 348
diff changeset
360 my $flabels = "$fname.labels";
86b470004d47 added lables loading
cin
parents: 348
diff changeset
361
86b470004d47 added lables loading
cin
parents: 348
diff changeset
362 if (-f $flabels) {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
363
86b470004d47 added lables loading
cin
parents: 348
diff changeset
364 my %labels;
86b470004d47 added lables loading
cin
parents: 348
diff changeset
365 $labels{default} = IMPL::Resources::Strings::ParseStringsMap($flabels);
86b470004d47 added lables loading
cin
parents: 348
diff changeset
366
86b470004d47 added lables loading
cin
parents: 348
diff changeset
367 while(my($label,$text) = each %{$labels{default}}) {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
368 $vars{$label} = sub {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
369 my ($params) = @_;
86b470004d47 added lables loading
cin
parents: 348
diff changeset
370 my $locale = Resources->currentLocale;
86b470004d47 added lables loading
cin
parents: 348
diff changeset
371
86b470004d47 added lables loading
cin
parents: 348
diff changeset
372 unless ($labels{$locale}) {
86b470004d47 added lables loading
cin
parents: 348
diff changeset
373 $labels{$locale} = -f "$fname.$locale" ?
86b470004d47 added lables loading
cin
parents: 348
diff changeset
374 IMPL::Resources::Strings::ParseStringsMap("$fname.$locale") :
86b470004d47 added lables loading
cin
parents: 348
diff changeset
375 {};
86b470004d47 added lables loading
cin
parents: 348
diff changeset
376 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
377
86b470004d47 added lables loading
cin
parents: 348
diff changeset
378 return FormatMessage(($labels{$locale}{$label} || $text),$params);
86b470004d47 added lables loading
cin
parents: 348
diff changeset
379 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
380 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
381 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
382
86b470004d47 added lables loading
cin
parents: 348
diff changeset
383 return \%vars;
86b470004d47 added lables loading
cin
parents: 348
diff changeset
384 }
86b470004d47 added lables loading
cin
parents: 348
diff changeset
385
345
cin
parents: 343
diff changeset
386 1;
cin
parents: 343
diff changeset
387
cin
parents: 343
diff changeset
388 __END__
cin
parents: 343
diff changeset
389
cin
parents: 343
diff changeset
390 =pod
cin
parents: 343
diff changeset
391
cin
parents: 343
diff changeset
392 =head1 NAME
cin
parents: 343
diff changeset
393
cin
parents: 343
diff changeset
394 C<IMPL::Web::View::TTContext> - доработанная версия контекста
cin
parents: 343
diff changeset
395
cin
parents: 343
diff changeset
396 =head1 DESCRIPTION
cin
parents: 343
diff changeset
397
cin
parents: 343
diff changeset
398 Расширяет функции C<Template::Context>
cin
parents: 343
diff changeset
399
cin
parents: 343
diff changeset
400 =begin plantuml
cin
parents: 343
diff changeset
401
cin
parents: 343
diff changeset
402 @startuml
cin
parents: 343
diff changeset
403
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
404 object RootContext {
345
cin
parents: 343
diff changeset
405 document
346
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
406 globals
345
cin
parents: 343
diff changeset
407 }
cin
parents: 343
diff changeset
408
cin
parents: 343
diff changeset
409 object DocumentContext {
346
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
410 base
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
411 extends
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
412 }
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
413
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
414 object ControlContext {
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
415 base
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
416 extends
345
cin
parents: 343
diff changeset
417 }
cin
parents: 343
diff changeset
418
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
419 RootContext o-- DocumentContext
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
420 RootContext o-- ControlContext
345
cin
parents: 343
diff changeset
421
346
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
422 Document -- DocumentContext
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
423 Control - ControlContext
345
cin
parents: 343
diff changeset
424
348
f116cd9fe7d9 working on TTView: pre-alpha version
cin
parents: 347
diff changeset
425 Loader . RootContext: <<creates>>
346
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
426 Loader . Document: <<creates>>
f05634287ac7 working on the view concept
cin
parents: 345
diff changeset
427 Loader -up- Registry
345
cin
parents: 343
diff changeset
428
cin
parents: 343
diff changeset
429 @enduml
cin
parents: 343
diff changeset
430
cin
parents: 343
diff changeset
431 =end plantuml
cin
parents: 343
diff changeset
432
cin
parents: 343
diff changeset
433 =head1 MEMBERS
cin
parents: 343
diff changeset
434
cin
parents: 343
diff changeset
435 =head2 C<[get,set]base>
cin
parents: 343
diff changeset
436
cin
parents: 343
diff changeset
437 Префикс пути для поиска шаблонов
cin
parents: 343
diff changeset
438
cin
parents: 343
diff changeset
439 =head2 C<template($name)>
cin
parents: 343
diff changeset
440
cin
parents: 343
diff changeset
441 Сначала пытается загрузить шаблон используя префикс C<base>, затем без префикса.
cin
parents: 343
diff changeset
442
cin
parents: 343
diff changeset
443 =head2 C<clone()>
cin
parents: 343
diff changeset
444
cin
parents: 343
diff changeset
445 Создает копию контекста, при этом C<stash> локализуется, таким образом
cin
parents: 343
diff changeset
446 клонированный контекст имеет собственное пространство имен, вложенное в
cin
parents: 343
diff changeset
447 пространство родительского контекста.
cin
parents: 343
diff changeset
448
cin
parents: 343
diff changeset
449 =cut