[1.5.0] AttrDef partitioned into HTML, CSS and URI segments. Also, some minor bugs with MultiLength fixed.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@747 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/AttrDef/CSS/Composite.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Allows multiple validators to attempt to validate attribute.
+ * 
+ * Composite is just what it sounds like: a composite of many validators.
+ * This means that multiple HTMLPurifier_AttrDef objects will have a whack
+ * at the string.  If one of them passes, that's what is returned.  This is
+ * especially useful for CSS values, which often are a choice between
+ * an enumerated set of predefined values or a flexible data type.
+ */
+class HTMLPurifier_AttrDef_CSS_Composite extends HTMLPurifier_AttrDef
+{
+    
+    /**
+     * List of HTMLPurifier_AttrDef objects that may process strings
+     * @protected
+     */
+    var $defs;
+    
+    /**
+     * @param $defs List of HTMLPurifier_AttrDef objects
+     */
+    function HTMLPurifier_AttrDef_CSS_Composite($defs) {
+        $this->defs = $defs;
+    }
+    
+    function validate($string, $config, &$context) {
+        foreach ($this->defs as $i => $def) {
+            $result = $this->defs[$i]->validate($string, $config, $context);
+            if ($result !== false) return $result;
+        }
+        return false;
+    }
+    
+}
+
+?>