From bc72b4da8a1d6d62415afe237602591219d47490 Mon Sep 17 00:00:00 2001
From: Danila Fedorin <danila.fedorin@gmail.com>
Date: Wed, 26 Jul 2017 19:10:55 -0700
Subject: [PATCH] Comment and clean up the Window class.

---
 src/org/nwapw/abacus/window/Window.java | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/org/nwapw/abacus/window/Window.java b/src/org/nwapw/abacus/window/Window.java
index 8d35f20..d2d4891 100644
--- a/src/org/nwapw/abacus/window/Window.java
+++ b/src/org/nwapw/abacus/window/Window.java
@@ -18,18 +18,27 @@ import java.awt.event.MouseEvent;
 public class Window extends JFrame {
 
     private static final String CALC_STRING = "Calculate";
-    private static final String SELECT_STRING = "Select";
     private static final String SYNTAX_ERR_STRING = "Syntax Error";
     private static final String EVAL_ERR_STRING = "Evaluation Error";
     private static final String NUMBER_SYSTEM_LABEL = "Number Type:";
     private static final String FUNCTION_LABEL = "Functions:";
 
+    /**
+     * Array of Strings to which the "calculate" button's text
+     * changes. For instance, in the graph tab, the name will
+     * be "Graph" and not "Calculate".
+     */
     private static final String[] BUTTON_NAMES = {
             CALC_STRING,
             CALC_STRING
     };
 
-    private static boolean[] BUTTON_ENABLED = {
+    /**
+     * Array of booleans that determine whether the input
+     * field and the input button are enabled at a particular
+     * index.
+     */
+    private static boolean[] INPUT_ENABLED = {
             true,
             false
     };
@@ -131,6 +140,10 @@ public class Window extends JFrame {
         inputField.setText("");
     };
 
+    /**
+     * Array of listeners that tell the input button how to behave
+     * at a given input tab.
+     */
     private ActionListener[] listeners = {
             evaluateListener,
             null
@@ -205,7 +218,7 @@ public class Window extends JFrame {
         pane.add("Settings", settingsPanel);
         pane.addChangeListener(e -> {
             int selectionIndex = pane.getSelectedIndex();
-            boolean enabled = BUTTON_ENABLED[selectionIndex];
+            boolean enabled = INPUT_ENABLED[selectionIndex];
             ActionListener listener = listeners[selectionIndex];
             inputEnterButton.setText(BUTTON_NAMES[selectionIndex]);
             inputField.setEnabled(enabled);