Version 1, September 2006

[GpsPrune.git] / tim / prune / load / OneCharDocument.java

diff --git a/tim/prune/load/OneCharDocument.java b/tim/prune/load/OneCharDocument.java
new file mode 100644 (file)
index 0000000..9868984
--- /dev/null
+++ b/tim/prune/load/OneCharDocument.java
@@ -0,0 +1,21 @@
+package tim.prune.load;
+
+import javax.swing.text.AttributeSet;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.PlainDocument;
+
+/**
+ * Document class to restrict text input to single character
+ * for selection of custom delimiter
+ */
+public class OneCharDocument extends PlainDocument
+{
+       public void insertString(int offs, String str, AttributeSet a)
+               throws BadLocationException
+       {
+               //This rejects the insertion if it would make
+               //the contents too long.
+               if ((getLength() + str.length()) <= 1)
+                       super.insertString(offs, str, a);
+       }
+}