From a2d3dd398849ed0d352a7d94d7d05a60477556bd Mon Sep 17 00:00:00 2001
From: Inaba Kazuhiro <inaba.k94@gmail.com>
Date: Sun, 30 Oct 2016 07:53:53 +0800
Subject: [PATCH] Navigate panels with tab and shift + tab

---
 .../java/seedu/taskman/ui/MainWindow.java     | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/main/java/seedu/taskman/ui/MainWindow.java b/src/main/java/seedu/taskman/ui/MainWindow.java
index 97e95bcfcda0..0f0726b0b569 100644
--- a/src/main/java/seedu/taskman/ui/MainWindow.java
+++ b/src/main/java/seedu/taskman/ui/MainWindow.java
@@ -1,8 +1,12 @@
 package seedu.taskman.ui;
 
+import java.util.ArrayList;
+
 import javafx.fxml.FXML;
 import javafx.scene.Node;
+import javafx.scene.Parent;
 import javafx.scene.Scene;
+import javafx.scene.control.ListView;
 import javafx.scene.control.MenuItem;
 import javafx.scene.input.KeyCombination;
 import javafx.scene.layout.AnchorPane;
@@ -119,6 +123,7 @@ void fillInnerParts() {
         resultDisplay = ResultDisplay.load(primaryStage, getResultDisplayPlaceholder());
         statusBarFooter = StatusBarFooter.load(primaryStage, getStatusbarPlaceholder(), config.getTaskManFilePath());
         commandBox = CommandBox.load(primaryStage, getCommandBoxPlaceholder(), resultDisplay, logic);
+        configureFocus();
     }
 
     private AnchorPane getCommandBoxPlaceholder() {
@@ -232,6 +237,31 @@ public void show() {
     private void handleExit() {
         raise(new ExitAppRequestEvent());
     }
+    
+    private void configureFocus() {
+        ArrayList<Node> nodes = getAllNodes();
+        for (Node node : nodes) {
+            if (node.getClass().equals(ListView.class)) {
+                node.setFocusTraversable(true);
+            } else {
+                node.setFocusTraversable(false);
+            }
+        }
+    }
+
+    private ArrayList<Node> getAllNodes() {
+        ArrayList<Node> nodes = new ArrayList<Node>();
+        addAllDescendents(rootLayout, nodes);
+        return nodes;
+    }
+
+    private void addAllDescendents(Parent parent, ArrayList<Node> nodes) {
+        for (Node node : parent.getChildrenUnmodifiable()) {
+            nodes.add(node);
+            if (node instanceof Parent)
+                addAllDescendents((Parent)node, nodes);
+        }
+    }
 
 
 }