Merge pull request #133 from grapoza/another-children-fix

Fixes child children prop discovery

Author: grapoza

package.json

@@ -3,7 +3,7 @@
   "description": "Yet another Vue treeview component.",
   "author": "Gregg Rapoza <grapoza@gmail.com>",
   "license": "MIT",
-  "version": "1.3.3",
+  "version": "1.3.4",
   "browser": "index.js",
   "repository": {
     "url": "https://github.com/grapoza/vue-tree",

src/components/TreeViewNode.vue

@@ -318,6 +318,9 @@
       $_treeViewNode_getIdPropNameForNode(node) {
         return this.idPropNames.find(pn => typeof node[pn] === 'number' || typeof node[pn] === 'string');
       },
+      $_treeViewNode_getChildrenPropNameForNode(node) {
+        return this.childrenPropNames.find(pn => Array.isArray(node[pn])) || 'children';
+      },
       /*
        * Normalizes the data model to the format consumable by TreeViewNode.
        */

src/mixins/TreeViewNodeAria.js

@@ -157,7 +157,7 @@ export default {
       else {
         let lastModel = this.model[this.childrenPropName][childIndex - 1];
         while (lastModel.children.length > 0 && lastModel.expandable && lastModel.state.expanded) {
-          lastModel = lastModel.children[lastModel.children.length - 1];
+          lastModel = lastModel[this.$_treeViewNode_getChildrenPropNameForNode(lastModel)][lastModel.children.length - 1];
         }
 
         lastModel.focusable = true;
@@ -169,7 +169,7 @@ export default {
       // Otherwise, punt this up to this node's parent
       let childIndex = this.model[this.childrenPropName].indexOf(childNode);
       if (!ignoreChild && childNode.children.length > 0 && childNode.expandable && childNode.state.expanded) {
-        childNode.children[0].focusable = true;
+        childNode[this.$_treeViewNode_getChildrenPropNameForNode(childNode)][0].focusable = true;
       }
       else if (childIndex < this.model[this.childrenPropName].length - 1) {
         this.model[this.childrenPropName][childIndex + 1].focusable = true;