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-rw-r--r--library/HTMLPurifier/AttrDef/CSS/ListStyle.php78
1 files changed, 78 insertions, 0 deletions
diff --git a/library/HTMLPurifier/AttrDef/CSS/ListStyle.php b/library/HTMLPurifier/AttrDef/CSS/ListStyle.php
new file mode 100644
index 000000000..4406868c0
--- /dev/null
+++ b/library/HTMLPurifier/AttrDef/CSS/ListStyle.php
@@ -0,0 +1,78 @@
+<?php
+
+/**
+ * Validates shorthand CSS property list-style.
+ * @warning Does not support url tokens that have internal spaces.
+ */
+class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Local copy of component validators.
+ * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
+ */
+ protected $info;
+
+ public function __construct($config) {
+ $def = $config->getCSSDefinition();
+ $this->info['list-style-type'] = $def->info['list-style-type'];
+ $this->info['list-style-position'] = $def->info['list-style-position'];
+ $this->info['list-style-image'] = $def->info['list-style-image'];
+ }
+
+ public function validate($string, $config, $context) {
+
+ // regular pre-processing
+ $string = $this->parseCDATA($string);
+ if ($string === '') return false;
+
+ // assumes URI doesn't have spaces in it
+ $bits = explode(' ', strtolower($string)); // bits to process
+
+ $caught = array();
+ $caught['type'] = false;
+ $caught['position'] = false;
+ $caught['image'] = false;
+
+ $i = 0; // number of catches
+ $none = false;
+
+ foreach ($bits as $bit) {
+ if ($i >= 3) return; // optimization bit
+ if ($bit === '') continue;
+ foreach ($caught as $key => $status) {
+ if ($status !== false) continue;
+ $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
+ if ($r === false) continue;
+ if ($r === 'none') {
+ if ($none) continue;
+ else $none = true;
+ if ($key == 'image') continue;
+ }
+ $caught[$key] = $r;
+ $i++;
+ break;
+ }
+ }
+
+ if (!$i) return false;
+
+ $ret = array();
+
+ // construct type
+ if ($caught['type']) $ret[] = $caught['type'];
+
+ // construct image
+ if ($caught['image']) $ret[] = $caught['image'];
+
+ // construct position
+ if ($caught['position']) $ret[] = $caught['position'];
+
+ if (empty($ret)) return false;
+ return implode(' ', $ret);
+
+ }
+
+}
+
+// vim: et sw=4 sts=4