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5 <title>API: dataschema dataschema-text.js (YUI Library)</title> |
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18 <h1><a href="http://developer.yahoo.com/yui/" title="Yahoo! UI Library">Yahoo! UI Library</a></h1> |
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19 <h3>dataschema <span class="subtitle">3.0.0</span></h3> |
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20 <a href="./index.html" title="Yahoo! UI Library">Yahoo! UI Library</a> |
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21 > <a href="./module_dataschema.html" title="dataschema">dataschema</a> |
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22 |
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23 > dataschema-text.js (source view) |
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48 #doc3 .classopts { display:none; } |
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49 </style> |
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50 <div class="highlight" ><pre><span class="c">/**</span> |
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51 <span class="c"> * Provides a DataSchema implementation which can be used to work with delimited text data.</span> |
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52 <span class="c"> *</span> |
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53 <span class="c"> * @module dataschema</span> |
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54 <span class="c"> * @submodule dataschema-text</span> |
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55 <span class="c"> */</span> |
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56 |
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57 <span class="c">/**</span> |
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58 <span class="c"> * Text subclass for the DataSchema Utility.</span> |
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59 <span class="c"> * @class DataSchema.Text</span> |
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60 <span class="c"> * @extends DataSchema.Base</span> |
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61 <span class="c"> * @static</span> |
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62 <span class="c"> */</span> |
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63 |
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64 <span class="k">var</span> <span class="nx">LANG</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">,</span> |
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65 |
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66 <span class="nx">SchemaText</span> <span class="o">=</span> <span class="o">{</span> |
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67 |
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68 <span class="c">/////////////////////////////////////////////////////////////////////////////</span> |
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69 <span class="c"></span> <span class="c">//</span> |
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70 <span class="c"></span> <span class="c">// DataSchema.Text static methods</span> |
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71 <span class="c"></span> <span class="c">//</span> |
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72 <span class="c"></span> <span class="c">/////////////////////////////////////////////////////////////////////////////</span> |
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73 <span class="c"></span> <span class="c">/**</span> |
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74 <span class="c"> * Applies a given schema to given delimited text data.</span> |
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75 <span class="c"> *</span> |
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76 <span class="c"> * @method apply</span> |
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77 <span class="c"> * @param schema {Object} Schema to apply.</span> |
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78 <span class="c"> * @param data {Object} Text data.</span> |
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79 <span class="c"> * @return {Object} Schema-parsed data.</span> |
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80 <span class="c"> * @static</span> |
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81 <span class="c"> */</span> |
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82 <span class="nx">apply</span><span class="o">:</span> <span class="k">function</span><span class="o">(</span><span class="nx">schema</span><span class="o">,</span> <span class="nx">data</span><span class="o">)</span> <span class="o">{</span> |
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83 <span class="k">var</span> <span class="nx">data_in</span> <span class="o">=</span> <span class="nx">data</span><span class="o">,</span> |
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84 <span class="nx">data_out</span> <span class="o">=</span> <span class="o">{</span><span class="nx">results</span><span class="o">:[],</span><span class="nx">meta</span><span class="o">:{}};</span> |
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85 |
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86 <span class="k">if</span><span class="o">(</span><span class="nx">LANG</span><span class="o">.</span><span class="nx">isString</span><span class="o">(</span><span class="nx">data_in</span><span class="o">)</span> <span class="o">&&</span> <span class="nx">LANG</span><span class="o">.</span><span class="nx">isString</span><span class="o">(</span><span class="nx">schema</span><span class="o">.</span><span class="nx">resultDelimiter</span><span class="o">))</span> <span class="o">{</span> |
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87 <span class="c">// Parse results data</span> |
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88 <span class="c"></span> <span class="nx">data_out</span> <span class="o">=</span> <span class="nx">SchemaText</span><span class="o">.</span><span class="nx">_parseResults</span><span class="o">(</span><span class="nx">schema</span><span class="o">,</span> <span class="nx">data_in</span><span class="o">,</span> <span class="nx">data_out</span><span class="o">);</span> |
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89 <span class="o">}</span> |
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90 <span class="k">else</span> <span class="o">{</span> |
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91 <span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s2">"Text data could not be schema-parsed: "</span> <span class="o">+</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">dump</span><span class="o">(</span><span class="nx">data</span><span class="o">)</span> <span class="o">+</span> <span class="s2">" "</span> <span class="o">+</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">dump</span><span class="o">(</span><span class="nx">data</span><span class="o">),</span> <span class="s2">"error"</span><span class="o">,</span> <span class="s2">"dataschema-text"</span><span class="o">);</span> |
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92 <span class="nx">data_out</span><span class="o">.</span><span class="nx">error</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Error</span><span class="o">(</span><span class="s2">"Text schema parse failure"</span><span class="o">);</span> |
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93 <span class="o">}</span> |
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94 |
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95 <span class="k">return</span> <span class="nx">data_out</span><span class="o">;</span> |
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96 <span class="o">},</span> |
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97 |
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98 <span class="c">/**</span> |
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99 <span class="c"> * Schema-parsed list of results from full data</span> |
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100 <span class="c"> *</span> |
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101 <span class="c"> * @method _parseResults</span> |
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102 <span class="c"> * @param schema {Array} Schema to parse against.</span> |
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103 <span class="c"> * @param text_in {String} Text to parse.</span> |
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104 <span class="c"> * @param data_out {Object} In-progress parsed data to update.</span> |
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105 <span class="c"> * @return {Object} Parsed data object.</span> |
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106 <span class="c"> * @static</span> |
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107 <span class="c"> * @protected</span> |
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108 <span class="c"> */</span> |
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109 <span class="nx">_parseResults</span><span class="o">:</span> <span class="k">function</span><span class="o">(</span><span class="nx">schema</span><span class="o">,</span> <span class="nx">text_in</span><span class="o">,</span> <span class="nx">data_out</span><span class="o">)</span> <span class="o">{</span> |
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110 <span class="k">var</span> <span class="nx">resultDelim</span> <span class="o">=</span> <span class="nx">schema</span><span class="o">.</span><span class="nx">resultDelimiter</span><span class="o">,</span> |
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111 <span class="nx">results</span> <span class="o">=</span> <span class="o">[],</span> |
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112 <span class="nx">results_in</span><span class="o">,</span> <span class="nx">fields_in</span><span class="o">,</span> <span class="nx">result</span><span class="o">,</span> <span class="nx">item</span><span class="o">,</span> <span class="nx">fields</span><span class="o">,</span> <span class="nx">field</span><span class="o">,</span> <span class="nx">key</span><span class="o">,</span> <span class="nx">value</span><span class="o">,</span> <span class="nx">i</span><span class="o">,</span> <span class="nx">j</span><span class="o">,</span> |
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113 |
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114 <span class="c">// Delete final delimiter at end of string if there</span> |
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115 <span class="c"></span> <span class="nx">tmpLength</span> <span class="o">=</span> <span class="nx">text_in</span><span class="o">.</span><span class="nx">length</span><span class="o">-</span><span class="nx">resultDelim</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span> |
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116 <span class="k">if</span><span class="o">(</span><span class="nx">text_in</span><span class="o">.</span><span class="nx">substr</span><span class="o">(</span><span class="nx">tmpLength</span><span class="o">)</span> <span class="o">==</span> <span class="nx">resultDelim</span><span class="o">)</span> <span class="o">{</span> |
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117 <span class="nx">text_in</span> <span class="o">=</span> <span class="nx">text_in</span><span class="o">.</span><span class="nx">substr</span><span class="o">(</span><span class="m">0</span><span class="o">,</span> <span class="nx">tmpLength</span><span class="o">);</span> |
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118 <span class="o">}</span> |
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119 |
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120 <span class="c">// Split into results</span> |
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121 <span class="c"></span> <span class="nx">results_in</span> <span class="o">=</span> <span class="nx">text_in</span><span class="o">.</span><span class="nx">split</span><span class="o">(</span><span class="nx">schema</span><span class="o">.</span><span class="nx">resultDelimiter</span><span class="o">);</span> |
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122 |
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123 <span class="k">for</span><span class="o">(</span><span class="nx">i</span><span class="o">=</span><span class="nx">results_in</span><span class="o">.</span><span class="nx">length</span><span class="o">-</span><span class="m">1</span><span class="o">;</span> <span class="nx">i</span><span class="o">>-</span><span class="m">1</span><span class="o">;</span> <span class="nx">i</span><span class="o">--)</span> <span class="o">{</span> |
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124 <span class="nx">result</span> <span class="o">=</span> <span class="o">{};</span> |
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125 <span class="nx">item</span> <span class="o">=</span> <span class="nx">results_in</span><span class="o">[</span><span class="nx">i</span><span class="o">];</span> |
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126 |
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127 <span class="k">if</span><span class="o">(</span><span class="nx">LANG</span><span class="o">.</span><span class="nx">isString</span><span class="o">(</span><span class="nx">schema</span><span class="o">.</span><span class="nx">fieldDelimiter</span><span class="o">))</span> <span class="o">{</span> |
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128 <span class="nx">fields_in</span> <span class="o">=</span> <span class="nx">item</span><span class="o">.</span><span class="nx">split</span><span class="o">(</span><span class="nx">schema</span><span class="o">.</span><span class="nx">fieldDelimiter</span><span class="o">);</span> |
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129 |
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130 <span class="k">if</span><span class="o">(</span><span class="nx">LANG</span><span class="o">.</span><span class="nx">isArray</span><span class="o">(</span><span class="nx">schema</span><span class="o">.</span><span class="nx">resultFields</span><span class="o">))</span> <span class="o">{</span> |
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131 <span class="nx">fields</span> <span class="o">=</span> <span class="nx">schema</span><span class="o">.</span><span class="nx">resultFields</span><span class="o">;</span> |
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132 <span class="k">for</span><span class="o">(</span><span class="nx">j</span><span class="o">=</span><span class="nx">fields</span><span class="o">.</span><span class="nx">length</span><span class="o">-</span><span class="m">1</span><span class="o">;</span> <span class="nx">j</span><span class="o">>-</span><span class="m">1</span><span class="o">;</span> <span class="nx">j</span><span class="o">--)</span> <span class="o">{</span> |
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133 <span class="nx">field</span> <span class="o">=</span> <span class="nx">fields</span><span class="o">[</span><span class="nx">j</span><span class="o">];</span> |
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134 <span class="nx">key</span> <span class="o">=</span> <span class="o">(!</span><span class="nx">LANG</span><span class="o">.</span><span class="nx">isUndefined</span><span class="o">(</span><span class="nx">field</span><span class="o">.</span><span class="nx">key</span><span class="o">))</span> <span class="o">?</span> <span class="nx">field</span><span class="o">.</span><span class="nx">key</span> <span class="o">:</span> <span class="nx">field</span><span class="o">;</span> |
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135 <span class="nx">value</span> <span class="o">=</span> <span class="o">(!</span><span class="nx">LANG</span><span class="o">.</span><span class="nx">isUndefined</span><span class="o">(</span><span class="nx">fields_in</span><span class="o">[</span><span class="nx">key</span><span class="o">]))</span> <span class="o">?</span> <span class="nx">fields_in</span><span class="o">[</span><span class="nx">key</span><span class="o">]</span> <span class="o">:</span> <span class="nx">fields_in</span><span class="o">[</span><span class="nx">j</span><span class="o">];</span> |
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136 <span class="nx">result</span><span class="o">[</span><span class="nx">key</span><span class="o">]</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">DataSchema</span><span class="o">.</span><span class="nx">Base</span><span class="o">.</span><span class="nx">parse</span><span class="o">(</span><span class="nx">value</span><span class="o">,</span> <span class="nx">field</span><span class="o">);</span> |
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137 <span class="o">}</span> |
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138 <span class="o">}</span> |
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139 |
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140 <span class="o">}</span> |
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141 <span class="k">else</span> <span class="o">{</span> |
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142 <span class="nx">result</span> <span class="o">=</span> <span class="nx">item</span><span class="o">;</span> |
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143 <span class="o">}</span> |
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144 |
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145 <span class="nx">results</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">=</span> <span class="nx">result</span><span class="o">;</span> |
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146 <span class="o">}</span> |
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147 <span class="nx">data_out</span><span class="o">.</span><span class="nx">results</span> <span class="o">=</span> <span class="nx">results</span><span class="o">;</span> |
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148 |
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149 <span class="k">return</span> <span class="nx">data_out</span><span class="o">;</span> |
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150 <span class="o">}</span> |
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151 <span class="o">};</span> |
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152 |
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153 <span class="nx">Y</span><span class="o">.</span><span class="nx">DataSchema</span><span class="o">.</span><span class="nx">Text</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">mix</span><span class="o">(</span><span class="nx">SchemaText</span><span class="o">,</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">DataSchema</span><span class="o">.</span><span class="nx">Base</span><span class="o">);</span> |
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154 </pre></div> |
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155 |
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156 </div> |
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157 </div> |
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158 </div> |
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159 <div class="yui-b"> |
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160 <div class="nav"> |
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161 |
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162 <div id="moduleList" class="module"> |
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163 <h4>Modules</h4> |
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164 <ul class="content"> |
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165 <li class=""><a href="module_anim.html" title="anim">anim</a></li> |
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166 <li class=""><a href="module_async-queue.html" title="async-queue">async-queue</a></li> |
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171 <li class=""><a href="module_collection.html" title="collection">collection</a></li> |
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175 <li class="selected"><a href="module_dataschema.html" title="dataschema">dataschema</a></li> |
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176 <li class=""><a href="module_datasource.html" title="datasource">datasource</a></li> |
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177 <li class=""><a href="module_datatype.html" title="datatype">datatype</a></li> |
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178 <li class=""><a href="module_dd.html" title="dd">dd</a></li> |
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179 <li class=""><a href="module_dom.html" title="dom">dom</a></li> |
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180 <li class=""><a href="module_dump.html" title="dump">dump</a></li> |
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181 <li class=""><a href="module_event.html" title="event">event</a></li> |
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182 <li class=""><a href="module_event-custom.html" title="event-custom">event-custom</a></li> |
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183 <li class=""><a href="module_event-simulate.html" title="event-simulate">event-simulate</a></li> |
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184 <li class=""><a href="module_history.html" title="history">history</a></li> |
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185 <li class=""><a href="module_imageloader.html" title="imageloader">imageloader</a></li> |
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186 <li class=""><a href="module_io.html" title="io">io</a></li> |
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187 <li class=""><a href="module_json.html" title="json">json</a></li> |
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188 <li class=""><a href="module_node.html" title="node">node</a></li> |
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189 <li class=""><a href="module_node-focusmanager.html" title="node-focusmanager">node-focusmanager</a></li> |
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190 <li class=""><a href="module_node-menunav.html" title="node-menunav">node-menunav</a></li> |
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191 <li class=""><a href="module_oop.html" title="oop">oop</a></li> |
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192 <li class=""><a href="module_overlay.html" title="overlay">overlay</a></li> |
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193 <li class=""><a href="module_plugin.html" title="plugin">plugin</a></li> |
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194 <li class=""><a href="module_profiler.html" title="profiler">profiler</a></li> |
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195 <li class=""><a href="module_queue-promote.html" title="queue-promote">queue-promote</a></li> |
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196 <li class=""><a href="module_slider.html" title="slider">slider</a></li> |
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197 <li class=""><a href="module_stylesheet.html" title="stylesheet">stylesheet</a></li> |
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198 <li class=""><a href="module_substitute.html" title="substitute">substitute</a></li> |
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199 <li class=""><a href="module_test.html" title="test">test</a></li> |
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200 <li class=""><a href="module_widget.html" title="widget">widget</a></li> |
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201 <li class=""><a href="module_widget-position.html" title="widget-position">widget-position</a></li> |
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202 <li class=""><a href="module_widget-position-ext.html" title="widget-position-ext">widget-position-ext</a></li> |
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203 <li class=""><a href="module_widget-stack.html" title="widget-stack">widget-stack</a></li> |
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204 <li class=""><a href="module_widget-stdmod.html" title="widget-stdmod">widget-stdmod</a></li> |
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205 <li class=""><a href="module_yui.html" title="yui">yui</a></li> |
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206 </ul> |
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207 </div> |
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208 |
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209 <div id="classList" class="module"> |
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210 <h4>Classes</h4> |
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211 <ul class="content"> |
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212 <li class=""><a href="DataSchema.Array.html" title="DataSchema.Array">DataSchema.Array</a></li> |
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213 <li class=""><a href="DataSchema.Base.html" title="DataSchema.Base">DataSchema.Base</a></li> |
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214 <li class=""><a href="DataSchema.JSON.html" title="DataSchema.JSON">DataSchema.JSON</a></li> |
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215 <li class=""><a href="DataSchema.Text.html" title="DataSchema.Text">DataSchema.Text</a></li> |
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216 <li class=""><a href="DataSchema.XML.html" title="DataSchema.XML">DataSchema.XML</a></li> |
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217 </ul> |
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218 </div> |
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219 |
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220 <div id="fileList" class="module"> |
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221 <h4>Files</h4> |
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222 <ul class="content"> |
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223 <li class=""><a href="dataschema-array.js.html" title="dataschema-array.js">dataschema-array.js</a></li> |
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224 <li class=""><a href="dataschema-base.js.html" title="dataschema-base.js">dataschema-base.js</a></li> |
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225 <li class=""><a href="dataschema-json.js.html" title="dataschema-json.js">dataschema-json.js</a></li> |
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226 <li class="selected"><a href="dataschema-text.js.html" title="dataschema-text.js">dataschema-text.js</a></li> |
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227 <li class=""><a href="dataschema-xml.js.html" title="dataschema-xml.js">dataschema-xml.js</a></li> |
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228 </ul> |
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229 </div> |
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230 |
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231 |
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232 |
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233 |
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234 |
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235 </div> |
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236 </div> |
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237 </div> |
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238 <div id="ft"> |
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