Version 5.0.0 beta 4

system/Widget/Area.php

@@ -673,6 +673,13 @@ class Area
 			return $this;
 		}
 
+		/* Can this widget be dropped into this area? */
+		/* @var Widget $widgetClass */
+		$widgetClass = 'IPS\\' . $block['app'] . '\\widgets\\' . $block['key'];
+		if( class_exists( $widgetClass ) and in_array( $this->id, $widgetClass::$disallowedAreas ) )
+		{
+			return $this;
+		}
 
 		/* Load configuration */
 		if ( empty( $block['configuration'] ) or !is_array( $block['configuration'] ) )

system/Widget/Widget.php

@@ -138,6 +138,11 @@ abstract class Widget
 	 */
 	public bool $soloWidget = false;
 
+	/**
+	 * @brief	If a widget should not be dropped into a particular area (e.g. a database widget in the header), list those areas here
+	 */
+	public static array $disallowedAreas = [];
+
 	/**
 	 * These layouts are the default allowed "feed" layouts
 	 *
@@ -411,6 +416,11 @@ abstract class Widget
 			$return['widget-paddingallowed']  = true;
 		}
 
+		if( count( static::$disallowedAreas ) )
+		{
+			$return['widget-disallowed-areas'] = implode( ",", static::$disallowedAreas );
+		}
+
 		return $return;
 	}