[cp-patches] FYI: swallow newlines in JTextFields

[Roman Kennke]

I committed the attached patch that fixes JTextFields so that it doesn't 
accept newline characters to be inserted.

2005-05-11  Roman Kennke  <address@hidden>

       * javax/swing/JTextField.java
       (createDefaultModel): Create and return a subclass of PlainDocument
       to allow newlines to be swallowed.


/Roman

Index: javax/swing/JTextField.java
===================================================================
RCS file: /cvsroot/classpath/classpath/javax/swing/JTextField.java,v
retrieving revision 1.18
diff -u -r1.18 JTextField.java
--- javax/swing/JTextField.java 16 Feb 2005 07:05:33 -0000      1.18
+++ javax/swing/JTextField.java 11 May 2005 10:22:37 -0000
@@ -47,6 +47,8 @@
 import java.beans.PropertyChangeListener;
 
 import javax.accessibility.AccessibleStateSet;
+import javax.swing.text.AttributeSet;
+import javax.swing.text.BadLocationException;
 import javax.swing.text.Document;
 import javax.swing.text.JTextComponent;
 import javax.swing.text.PlainDocument;
@@ -187,7 +189,15 @@
    */
   protected Document createDefaultModel()
   {
-    return new PlainDocument();
+    // subclassed to swallow newlines
+    return new PlainDocument() {
+        public void insertString(int offset, String str, AttributeSet a)
+          throws BadLocationException
+        {
+          if (str.indexOf('\n') == -1)
+            super.insertString(offset, str, a);
+        }
+      };
   }
 
   /**