scratch – Blame information for rev 87
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Rev | Author | Line No. | Line |
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87 | office | 1 | <?php |
2 | |||
3 | /* |
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4 | * This file is part of the Symfony package. |
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5 | * |
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6 | * (c) Fabien Potencier <fabien@symfony.com> |
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7 | * |
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8 | * For the full copyright and license information, please view the LICENSE |
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9 | * file that was distributed with this source code. |
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10 | */ |
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11 | |||
12 | namespace Symfony\Component\CssSelector\XPath\Extension; |
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13 | |||
14 | use Symfony\Component\CssSelector\Exception\ExpressionErrorException; |
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15 | use Symfony\Component\CssSelector\Node\FunctionNode; |
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16 | use Symfony\Component\CssSelector\XPath\Translator; |
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17 | use Symfony\Component\CssSelector\XPath\XPathExpr; |
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18 | |||
19 | /** |
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20 | * XPath expression translator HTML extension. |
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21 | * |
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22 | * This component is a port of the Python cssselect library, |
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23 | * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. |
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24 | * |
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25 | * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> |
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26 | * |
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27 | * @internal |
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28 | */ |
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29 | class HtmlExtension extends AbstractExtension |
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30 | { |
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31 | /** |
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32 | * Constructor. |
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33 | * |
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34 | * @param Translator $translator |
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35 | */ |
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36 | public function __construct(Translator $translator) |
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37 | { |
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38 | $translator |
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39 | ->getExtension('node') |
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40 | ->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true) |
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41 | ->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true); |
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42 | } |
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43 | |||
44 | /** |
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45 | * {@inheritdoc} |
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46 | */ |
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47 | public function getPseudoClassTranslators() |
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48 | { |
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49 | return array( |
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50 | 'checked' => array($this, 'translateChecked'), |
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51 | 'link' => array($this, 'translateLink'), |
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52 | 'disabled' => array($this, 'translateDisabled'), |
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53 | 'enabled' => array($this, 'translateEnabled'), |
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54 | 'selected' => array($this, 'translateSelected'), |
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55 | 'invalid' => array($this, 'translateInvalid'), |
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56 | 'hover' => array($this, 'translateHover'), |
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57 | 'visited' => array($this, 'translateVisited'), |
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58 | ); |
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59 | } |
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60 | |||
61 | /** |
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62 | * {@inheritdoc} |
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63 | */ |
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64 | public function getFunctionTranslators() |
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65 | { |
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66 | return array( |
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67 | 'lang' => array($this, 'translateLang'), |
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68 | ); |
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69 | } |
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70 | |||
71 | /** |
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72 | * @param XPathExpr $xpath |
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73 | * |
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74 | * @return XPathExpr |
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75 | */ |
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76 | public function translateChecked(XPathExpr $xpath) |
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77 | { |
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78 | return $xpath->addCondition( |
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79 | '(@checked ' |
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80 | ."and (name(.) = 'input' or name(.) = 'command')" |
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81 | ."and (@type = 'checkbox' or @type = 'radio'))" |
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82 | ); |
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83 | } |
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84 | |||
85 | /** |
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86 | * @param XPathExpr $xpath |
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87 | * |
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88 | * @return XPathExpr |
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89 | */ |
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90 | public function translateLink(XPathExpr $xpath) |
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91 | { |
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92 | return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')"); |
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93 | } |
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94 | |||
95 | /** |
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96 | * @param XPathExpr $xpath |
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97 | * |
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98 | * @return XPathExpr |
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99 | */ |
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100 | public function translateDisabled(XPathExpr $xpath) |
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101 | { |
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102 | return $xpath->addCondition( |
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103 | '(' |
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104 | .'@disabled and' |
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105 | .'(' |
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106 | ."(name(.) = 'input' and @type != 'hidden')" |
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107 | ." or name(.) = 'button'" |
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108 | ." or name(.) = 'select'" |
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109 | ." or name(.) = 'textarea'" |
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110 | ." or name(.) = 'command'" |
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111 | ." or name(.) = 'fieldset'" |
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112 | ." or name(.) = 'optgroup'" |
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113 | ." or name(.) = 'option'" |
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114 | .')' |
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115 | .') or (' |
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116 | ."(name(.) = 'input' and @type != 'hidden')" |
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117 | ." or name(.) = 'button'" |
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118 | ." or name(.) = 'select'" |
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119 | ." or name(.) = 'textarea'" |
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120 | .')' |
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121 | .' and ancestor::fieldset[@disabled]' |
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122 | ); |
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123 | // todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any." |
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124 | } |
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125 | |||
126 | /** |
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127 | * @param XPathExpr $xpath |
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128 | * |
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129 | * @return XPathExpr |
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130 | */ |
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131 | public function translateEnabled(XPathExpr $xpath) |
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132 | { |
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133 | return $xpath->addCondition( |
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134 | '(' |
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135 | .'@href and (' |
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136 | ."name(.) = 'a'" |
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137 | ." or name(.) = 'link'" |
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138 | ." or name(.) = 'area'" |
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139 | .')' |
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140 | .') or (' |
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141 | .'(' |
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142 | ."name(.) = 'command'" |
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143 | ." or name(.) = 'fieldset'" |
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144 | ." or name(.) = 'optgroup'" |
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145 | .')' |
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146 | .' and not(@disabled)' |
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147 | .') or (' |
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148 | .'(' |
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149 | ."(name(.) = 'input' and @type != 'hidden')" |
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150 | ." or name(.) = 'button'" |
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151 | ." or name(.) = 'select'" |
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152 | ." or name(.) = 'textarea'" |
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153 | ." or name(.) = 'keygen'" |
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154 | .')' |
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155 | .' and not (@disabled or ancestor::fieldset[@disabled])' |
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156 | .') or (' |
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157 | ."name(.) = 'option' and not(" |
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158 | .'@disabled or ancestor::optgroup[@disabled]' |
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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 | |||
164 | /** |
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165 | * @param XPathExpr $xpath |
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166 | * @param FunctionNode $function |
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167 | * |
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168 | * @return XPathExpr |
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169 | * |
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170 | * @throws ExpressionErrorException |
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171 | */ |
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172 | public function translateLang(XPathExpr $xpath, FunctionNode $function) |
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173 | { |
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174 | $arguments = $function->getArguments(); |
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175 | foreach ($arguments as $token) { |
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176 | if (!($token->isString() || $token->isIdentifier())) { |
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177 | throw new ExpressionErrorException( |
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178 | 'Expected a single string or identifier for :lang(), got ' |
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179 | .implode(', ', $arguments) |
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180 | ); |
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181 | } |
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182 | } |
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183 | |||
184 | return $xpath->addCondition(sprintf( |
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185 | 'ancestor-or-self::*[@lang][1][starts-with(concat(' |
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186 | ."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')" |
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187 | .', %s)]', |
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188 | 'lang', |
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189 | Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-') |
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190 | )); |
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191 | } |
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192 | |||
193 | /** |
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194 | * @param XPathExpr $xpath |
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195 | * |
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196 | * @return XPathExpr |
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197 | */ |
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198 | public function translateSelected(XPathExpr $xpath) |
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199 | { |
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200 | return $xpath->addCondition("(@selected and name(.) = 'option')"); |
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201 | } |
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202 | |||
203 | /** |
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204 | * @param XPathExpr $xpath |
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205 | * |
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206 | * @return XPathExpr |
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207 | */ |
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208 | public function translateInvalid(XPathExpr $xpath) |
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209 | { |
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210 | return $xpath->addCondition('0'); |
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211 | } |
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212 | |||
213 | /** |
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214 | * @param XPathExpr $xpath |
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215 | * |
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216 | * @return XPathExpr |
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217 | */ |
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218 | public function translateHover(XPathExpr $xpath) |
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219 | { |
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220 | return $xpath->addCondition('0'); |
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221 | } |
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222 | |||
223 | /** |
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224 | * @param XPathExpr $xpath |
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225 | * |
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226 | * @return XPathExpr |
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227 | */ |
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228 | public function translateVisited(XPathExpr $xpath) |
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229 | { |
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230 | return $xpath->addCondition('0'); |
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231 | } |
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232 | |||
233 | /** |
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234 | * {@inheritdoc} |
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235 | */ |
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236 | public function getName() |
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237 | { |
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238 | return 'html'; |
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239 | } |
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240 | } |