Text field for ports

Author: cyberpwnn

src/org/cyberpwn/react/ui/PortJTextField.java

@@ -0,0 +1,48 @@
+package org.cyberpwn.react.ui;
+
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+
+import javax.swing.JTextField;
+
+public class PortJTextField extends JTextField
+{
+	private static final long serialVersionUID = 1L;
+	
+	public PortJTextField()
+	{
+		addKeyListener(new KeyAdapter()
+		{
+			public void keyTyped(KeyEvent e)
+			{
+				char ch = e.getKeyChar();
+				
+				if(!isNumber(ch) && !isValidSignal(ch) && !validatePoint(ch) && ch != '\b')
+				{
+					e.consume();
+				}
+			}
+		});
+		
+	}
+	
+	private boolean isNumber(char ch)
+	{
+		return ch >= '0' && ch <= '9';
+	}
+	
+	private boolean isValidSignal(char ch)
+	{
+		if((getText() == null || "".equals(getText().trim())) && ch == '-')
+		{
+			return false;
+		}
+		
+		return false;
+	}
+	
+	private boolean validatePoint(char ch)
+	{
+		return false;
+	}
+}