From adc777ea521b25d7daf841dd0fd9a88266a93baf Mon Sep 17 00:00:00 2001
From: Jim Procter <jprocter@issues.jalview.org>
Date: Fri, 27 Oct 2017 16:13:53 +0100
Subject: [PATCH] JAL-2804 kludge method to test if last key event handled was
 ENTER

---
 src/jalview/io/cache/JvCacheableInputBox.java |   39 +++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/src/jalview/io/cache/JvCacheableInputBox.java b/src/jalview/io/cache/JvCacheableInputBox.java
index 3d0daed..a837512 100644
--- a/src/jalview/io/cache/JvCacheableInputBox.java
+++ b/src/jalview/io/cache/JvCacheableInputBox.java
@@ -28,6 +28,7 @@ import java.awt.Dimension;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -70,11 +71,49 @@ public class JvCacheableInputBox<E> extends JComboBox<String>
 
   private JMenuItem menuItemClearCache = new JMenuItem();
 
+  volatile boolean enterWasPressed = false;
+
+  /**
+   * @return flag indicating if the most recent keypress was enter
+   */
+  public boolean wasEnterPressed()
+  {
+    return enterWasPressed;
+  }
+
   public JvCacheableInputBox(String newCacheKey)
   {
     super();
     this.cacheKey = newCacheKey;
     setEditable(true);
+    addKeyListener(new KeyListener()
+    {
+
+      @Override
+      public void keyTyped(KeyEvent e)
+      {
+        enterWasPressed = false;
+        if (e.getKeyCode() == KeyEvent.VK_ENTER)
+        {
+          enterWasPressed = true;
+        }
+        // let event bubble up
+      }
+
+      @Override
+      public void keyReleased(KeyEvent e)
+      {
+        // TODO Auto-generated method stub
+
+      }
+
+      @Override
+      public void keyPressed(KeyEvent e)
+      {
+        // TODO Auto-generated method stub
+
+      }
+    });
     setPrototypeDisplayValue(
             "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
     appCache = AppCache.getInstance();
-- 
1.7.10.2