X-Git-Url: https://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fload%2FOneCharDocument.java;fp=src%2Ftim%2Fprune%2Fload%2FOneCharDocument.java;h=9868984f1d6b66ed3dc1eb3cbfbc0dc611b15e57;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/load/OneCharDocument.java b/src/tim/prune/load/OneCharDocument.java
new file mode 100644
index 0000000..9868984
--- /dev/null
+++ b/src/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);
+	}
+}