From 394141df947de6aedd1f90f3a2b7a396eec0e1b4 Mon Sep 17 00:00:00 2001
From: mrh0057 <mrhoyt4@gmail.com>
Date: Sun, 5 Apr 2020 15:16:51 -0500
Subject: [PATCH] Updated vlist to have key() attribute.

Issue #479
---
 src/virtual_dom/vlist.rs | 16 ++++++++++++++++
 src/virtual_dom/vnode.rs |  2 +-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/virtual_dom/vlist.rs b/src/virtual_dom/vlist.rs
index 8b55babf6e0..6c3a12c7eb8 100644
--- a/src/virtual_dom/vlist.rs
+++ b/src/virtual_dom/vlist.rs
@@ -60,6 +60,22 @@ impl VList {
     pub fn add_child(&mut self, child: VNode) {
         self.children.push(child);
     }
+
+    pub fn key(&self) -> Option<String> {
+        let mut key = String::with_capacity(150);
+        const START_STRING: &str = "#vlist_";
+        key.push_str(START_STRING);
+        for n in &self.children{
+            if let Some(child_key) = &n.key() {
+                key = key + child_key;
+            }
+        }
+        if START_STRING == &key {
+            None
+        } else {
+            Some(key)
+        }
+    }
 }
 
 impl VDiff for VList {
diff --git a/src/virtual_dom/vnode.rs b/src/virtual_dom/vnode.rs
index 7698dfa09c3..75e8bc0f1ae 100644
--- a/src/virtual_dom/vnode.rs
+++ b/src/virtual_dom/vnode.rs
@@ -37,7 +37,7 @@ impl VNode {
             VNode::VTag(vtag) => vtag.key.clone(),
             VNode::VText(_) => None,
             VNode::VComp(vcomp) => vcomp.key.clone(),
-            VNode::VList(_) => None,
+            VNode::VList(vnode) => vnode.key().clone(),
             VNode::VRef(_) => None,
         }
     }