From 369dc517794f2d8dd3800b42da5271d1be55b1d4 Mon Sep 17 00:00:00 2001
From: Jesse Brault <jbrault@mac.com>
Date: Mon, 27 Jan 2025 14:16:00 -0600
Subject: [PATCH] Added hasAncestor and findNearestAncestor(Class) methods to
 ComponentContext.

---
 .../component/context/ComponentContext.java     | 17 +++++++++++++++++
 .../context/DefaultComponentContext.java        | 15 ++++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/view-components/src/main/java/groowt/view/component/context/ComponentContext.java b/view-components/src/main/java/groowt/view/component/context/ComponentContext.java
index ce48887..5585258 100644
--- a/view-components/src/main/java/groowt/view/component/context/ComponentContext.java
+++ b/view-components/src/main/java/groowt/view/component/context/ComponentContext.java
@@ -99,6 +99,23 @@ public interface ComponentContext {
         return ancestorClass.cast(this.findNearestAncestor(matching.and(ancestorClass::isInstance)));
     }
 
+    default <T extends ViewComponent> @Nullable T findNearestAncestor(Class<T> ancestorClass) {
+        return ancestorClass.cast(this.findNearestAncestor(ancestorClass::isInstance));
+    }
+
+    boolean hasAncestor(Predicate<? super ViewComponent> matching);
+
+    default <T extends ViewComponent> boolean hasAncestor(
+            Class<T> ancestorClass,
+            Predicate<? super ViewComponent> matching
+    ) {
+        return this.hasAncestor(matching.and(ancestorClass::isInstance));
+    }
+
+    default <T extends ViewComponent> boolean hasAncestor(Class<T> ancestorClass) {
+        return this.hasAncestor(ancestorClass::isInstance);
+    }
+
     List<ViewComponent> getAllAncestors();
 
 }
diff --git a/view-components/src/main/java/groowt/view/component/context/DefaultComponentContext.java b/view-components/src/main/java/groowt/view/component/context/DefaultComponentContext.java
index f806226..8e7ed8d 100644
--- a/view-components/src/main/java/groowt/view/component/context/DefaultComponentContext.java
+++ b/view-components/src/main/java/groowt/view/component/context/DefaultComponentContext.java
@@ -70,7 +70,7 @@ public class DefaultComponentContext implements ComponentContext {
     public @Nullable ViewComponent findNearestAncestor(Predicate<? super ViewComponent> matching) {
         final List<ViewComponent> componentStack = this.getRenderContext().getComponentStack();
         if (componentStack.size() > 1) {
-            for (final var ancestor : componentStack.subList(1, componentStack.size() -1)) {
+            for (final var ancestor : componentStack.subList(1, componentStack.size() - 1)) {
                 if (matching.test(ancestor)) {
                     return ancestor;
                 }
@@ -79,6 +79,19 @@ public class DefaultComponentContext implements ComponentContext {
         return null;
     }
 
+    @Override
+    public boolean hasAncestor(Predicate<? super ViewComponent> matching) {
+        final List<ViewComponent> componentStack = this.getRenderContext().getComponentStack();
+        if (componentStack.size() > 1) {
+            for (final var ancestor : componentStack.subList(1, componentStack.size() - 1)) {
+                if (matching.test(ancestor)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
     @Override
     public List<ViewComponent> getAllAncestors() {
         final List<ViewComponent> componentStack = this.getRenderContext().getComponentStack();