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181
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1 package IMPL::Web::View::TTLoader;
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2 use strict;
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3
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4 use IMPL::lang qw(:declare :constants);
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5
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6 use Template::Provider();
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7 use Template::Context();
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8 use Template::Constants qw(:status);
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9
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10 use IMPL::Web::View::TTDocument();
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11
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12 use parent qw(
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13 IMPL::Object
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14 );
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15
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16 BEGIN {
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17 public property options => PROP_ALL;
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18 public property provider => PROP_GET | PROP_OWNERSET;
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19 public property context => PROP_GET | PROP_OWNERSET;
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20 public property ext => PROP_ALL;
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21
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22 public property isInitialized => PROP_GET | PROP_OWNERSET;
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23 public property initializer => PROP_GET | PROP_OWNERSET;
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24 }
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25
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26 sub CTOR {
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27 my ($this,$refOpts,%args) = @_;
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28
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184
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29 $refOpts ||= {};
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30
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31 $this->ext(delete $args{ext});
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181
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32 $this->initializer(delete $args{initializer});
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33
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34 $this->options($refOpts);
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35
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184
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36 # to aviod cyclic references we need to do a copy of $refOpts
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37 $refOpts->{LOAD_TEMPLATES} = $this->provider(new Template::Provider( { %$refOpts } ));
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181
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38
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39 $this->context(new Template::Context($refOpts));
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40 }
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41
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42 sub document {
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43 my ($this,$name) = @_;
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44
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45 my $tt = $this->template($name);
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46
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47 $this->_init();
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48
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184
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49 my $opts = { %{ $this->options } };
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181
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50
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51 $opts->{STASH} = $this->context->stash->clone();
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52 $opts->{LOAD_TEMPLATES} = $this->provider;
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53
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54 return new IMPL::Web::View::TTDocument( $tt, $opts, loader => $this );
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55 }
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56
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57 sub template {
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58 my ($this,$name) = @_;
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59
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60 $name =~ s/^\s+|\s+$//g;
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61
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62 die new IMPL::ArgumentException("A valid template name is required") unless length $name;
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63
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64 $name = $this->_appendExt($name);
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65
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66 my ($tt,$error) = $this->provider->fetch($name);
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67
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184
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68 if (defined $error and $error == STATUS_DECLINED) {
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181
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69 die new IMPL::KeyNotFoundException($name);
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184
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70 } elsif (defined $error and $error == STATUS_ERROR) {
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181
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71 die new IMPL::Exception("Failed to load a template", $name, $tt);
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72 }
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73
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74 return $tt;
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75 }
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76
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77 sub _appendExt {
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78 my ($this,$name) = @_;
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79
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185
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80 return $name unless $this->ext;
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81
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181
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82 if (length $this->ext and substr( $name, -length($this->ext) ) eq $this->ext) {
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83 return $name;
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84 } else {
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85 return $name . $this->ext;
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86 }
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87 }
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88
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89 sub _init {
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90 my ($this) = @_;
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91
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92 if (!$this->isInitialized) {
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93 if ($this->initializer) {
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94 eval {
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95 $this->context->process($this->initializer);
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184
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96 };
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97 if (my $e = $@) {
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98 die new IMPL::Exception("Failed to process an initializer", $this->initializer, $e);
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181
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99 }
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100 }
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184
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101 $this->isInitialized(1);
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181
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102 }
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103 }
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104
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105 1;
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106
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107 __END__
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108
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109 =pod
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110
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111 =head1 NAME
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112
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113 C<IMPL::Web::View::TTLoader> - предоставляет глобальный контекст для загрузки шаблонов
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114
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115 =head1 SYNOPSIS
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116
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117 =begin code
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118
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119 use IMPL::Web::View::TTLoader();
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120
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121 my $loader = new IMPL::Web::View::TTLoader(
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122 {
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123 INCLUDE_PATH => [
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124 '/my/app/tt',
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125 '/my/app/tt/lib'
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126 ]
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127 },
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128 ext => '.tt',
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129 initializer => 'shared/global'
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130
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131 );
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132
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133 my $doc = $loader->document('index');
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134
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135 my $html = $doc->Render();
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136
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137 =end code
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138
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139 =head1 DESCRIPTION
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140
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182
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141 =head1 MEMBERS
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142
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143 =head2 C<document($docName)>
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144
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181
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145 =cut
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146
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