feat(viewNode): Add getLastAncestorOfType method

Kitware · Apr 11, 2024 · c1197c3 · c1197c3
1 parent dab4f05
commit c1197c3
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Showing 2 changed files with 20 additions and 0 deletions.
diff --git a/Sources/Rendering/SceneGraph/ViewNode/index.d.ts b/Sources/Rendering/SceneGraph/ViewNode/index.d.ts
@@ -66,6 +66,12 @@ export interface vtkViewNode extends vtkObject {
 	 */
 	getFirstAncestorOfType(type: any): void;
 
+	/**
+	 * Find the last parent/grandparent of the desired type
+	 * @param type 
+	 */
+	getLastAncestorOfType(type: any): void;
+
 	/**
 	 * 
 	 */

diff --git a/Sources/Rendering/SceneGraph/ViewNode/index.js b/Sources/Rendering/SceneGraph/ViewNode/index.js
@@ -70,6 +70,20 @@ function vtkViewNode(publicAPI, model) {
     return model._parent.getFirstAncestorOfType(type);
   };
 
+  publicAPI.getLastAncestorOfType = (type) => {
+    if (!model._parent) {
+      return null;
+    }
+    const lastAncestor = model._parent.getLastAncestorOfType(type);
+    if (lastAncestor) {
+      return lastAncestor;
+    }
+    if (model._parent.isA(type)) {
+      return model._parent;
+    }
+    return null;
+  };
+
   // add a missing node/child for the passed in renderables. This should
   // be called only in between prepareNodes and removeUnusedNodes
   publicAPI.addMissingNode = (dobj) => {