Add Component.parents method

src/dom_components/model/Component.js

@@ -1050,6 +1050,15 @@ export default class Component extends StyleableModel {
     return coll ? coll.parent : null;
   }
 
+  /**
+   * Return all parents of the component.
+   * @returns {Array<[Component]>}
+   */
+  parents() {
+    const parent = this.parent();
+    return parent ? [parent].concat(parent.parents()) : [];
+  }
+
   /**
    * Script updated
    * @private