ENHANCEMENT addExtraClass() support for Tab and TabSet

forms/Tab.php

@@ -67,5 +67,19 @@ class Tab extends CompositeField {
 			if($name == $child->getName()) return $child;
 		}
 	}
+
+	public function extraClass() {
+		return implode(' ', (array)$this->extraClasses);
+	}
+
+	public function getAttributes() {
+		return array_merge(
+			$this->attributes,
+			array(
+				'id' => $this->id(),
+				'class' => 'tab ' . $this->extraClass()
+			)
+		);
+	}
 }
 

forms/TabSet.php

@@ -102,6 +102,16 @@ class TabSet extends CompositeField {
 	public function getTabSet() {
 		if(isset($this->tabSet)) return $this->tabSet;
 	}
+
+	public function getAttributes() {
+		return array_merge(
+			$this->attributes,
+			array(
+				'id' => $this->id(),
+				'class' => 'ss-tabset ' . $this->extraClass()
+			)
+		);
+	}
 	
 	/**
 	 * Returns the named tab

templates/forms/TabSet.ss

@@ -1,12 +1,12 @@
-<div class="ss-tabset" id="$id">
+<div $AttributesHTML>
 	<ul>
 	<% control Tabs %>
-		<li class="$FirstLast $MiddleString"><a href="#$id" id="tab-$id">$Title</a></li>
+		<li class="$FirstLast $MiddleString $extraClass"><a href="#$id" id="tab-$id">$Title</a></li>
 	<% end_control %>
 	</ul>
 
 	<% control Tabs %>
-	<div class="tab" id="$id">
+	<div $AttributesHTML>
 	<% if Tabs %>
 		$FieldHolder
 	<% else %>