Replaced selectNode changes with proper function calls

src/editor/js/components/editor.tsx

@@ -52,6 +52,7 @@ export class Editor extends React.PureComponent<propTypes, stateTypes> {
         this.handleNodeDrag = this.handleNodeDrag.bind(this);
         this.handleNodeDragEnd = this.handleNodeDragEnd.bind(this);
         this.handleLinkClick = this.handleLinkClick.bind(this);
+        this.selectNode = this.selectNode.bind(this);
 
         this.renderer = React.createRef();
 
@@ -174,9 +175,7 @@ export class Editor extends React.PureComponent<propTypes, stateTypes> {
      * Propagates the changed state of the graph.
      */
     private onHistoryChange() {
-        this.setState({
-            selectedNode: undefined,
-        });
+        this.selectNode(undefined);
         this.forceUpdate();
     }
 
@@ -334,9 +333,7 @@ export class Editor extends React.PureComponent<propTypes, stateTypes> {
     }
 
     private handleNodeDrag(node: Node, translate: positionTranslate) {
-        this.setState({
-            selectedNode: node,
-        });
+        this.selectNode(node);
 
         const closest = this.state.graph.getClosestOtherNode(node);