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<?php |
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/* W3C says: |
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[ // adjective and number must be in correct order, even if |
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// you could switch them without introducing ambiguity. |
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// some browsers support that syntax |
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[ |
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<percentage> | <length> | left | center | right |
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] |
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[ |
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<percentage> | <length> | top | center | bottom |
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]? |
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] | |
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[ // this signifies that the vertical and horizontal adjectives |
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// can be arbitrarily ordered, however, there can only be two, |
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// one of each, or none at all |
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[ |
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left | center | right |
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] || |
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[ |
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top | center | bottom |
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] |
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] |
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top, left = 0% |
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center, (none) = 50% |
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bottom, right = 100% |
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*/ |
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/* QuirksMode says: |
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keyword + length/percentage must be ordered correctly, as per W3C |
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Internet Explorer and Opera, however, support arbitrary ordering. We |
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should fix it up. |
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Minor issue though, not strictly necessary. |
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*/ |
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// control freaks may appreciate the ability to convert these to |
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// percentages or something, but it's not necessary |
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/** |
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* Validates the value of background-position. |
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*/ |
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class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef |
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{ |
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/** |
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* @type HTMLPurifier_AttrDef_CSS_Length |
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*/ |
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protected $length; |
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/** |
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* @type HTMLPurifier_AttrDef_CSS_Percentage |
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*/ |
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protected $percentage; |
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public function __construct() |
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{ |
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$this->length = new HTMLPurifier_AttrDef_CSS_Length(); |
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$this->percentage = new HTMLPurifier_AttrDef_CSS_Percentage(); |
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} |
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/** |
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* @param string $string |
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* @param HTMLPurifier_Config $config |
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* @param HTMLPurifier_Context $context |
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* @return bool|string |
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*/ |
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public function validate($string, $config, $context) |
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{ |
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$string = $this->parseCDATA($string); |
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$bits = explode(' ', $string); |
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$keywords = array(); |
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$keywords['h'] = false; // left, right |
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$keywords['v'] = false; // top, bottom |
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$keywords['ch'] = false; // center (first word) |
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$keywords['cv'] = false; // center (second word) |
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$measures = array(); |
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$i = 0; |
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$lookup = array( |
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'top' => 'v', |
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'bottom' => 'v', |
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'left' => 'h', |
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'right' => 'h', |
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'center' => 'c' |
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); |
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foreach ($bits as $bit) { |
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if ($bit === '') { |
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continue; |
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} |
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// test for keyword |
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$lbit = ctype_lower($bit) ? $bit : strtolower($bit); |
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if (isset($lookup[$lbit])) { |
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$status = $lookup[$lbit]; |
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if ($status == 'c') { |
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if ($i == 0) { |
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$status = 'ch'; |
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} else { |
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$status = 'cv'; |
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} |
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} |
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$keywords[$status] = $lbit; |
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$i++; |
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} |
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// test for length |
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$r = $this->length->validate($bit, $config, $context); |
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if ($r !== false) { |
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$measures[] = $r; |
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$i++; |
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} |
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// test for percentage |
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$r = $this->percentage->validate($bit, $config, $context); |
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if ($r !== false) { |
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$measures[] = $r; |
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$i++; |
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} |
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} |
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if (!$i) { |
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return false; |
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} // no valid values were caught |
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$ret = array(); |
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// first keyword |
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View Code Duplication |
if ($keywords['h']) { |
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$ret[] = $keywords['h']; |
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} elseif ($keywords['ch']) { |
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$ret[] = $keywords['ch']; |
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$keywords['cv'] = false; // prevent re-use: center = center center |
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} elseif (count($measures)) { |
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$ret[] = array_shift($measures); |
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} |
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View Code Duplication |
if ($keywords['v']) { |
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$ret[] = $keywords['v']; |
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} elseif ($keywords['cv']) { |
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$ret[] = $keywords['cv']; |
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} elseif (count($measures)) { |
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$ret[] = array_shift($measures); |
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} |
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if (empty($ret)) { |
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return false; |
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} |
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return implode(' ', $ret); |
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} |
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} |
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// vim: et sw=4 sts=4 |
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Hannesalm /
EventCalendar
Loading history...
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.