diff --git a/src/Str.java b/src/Str.java
new file mode 100644
index 0000000..bc24f73
--- /dev/null
+++ b/src/Str.java
@@ -0,0 +1,82 @@
+
+
+
+/**
+ * General purpose string utilities
+ * 
+ * @author Ondřej Hruška (MightyPork)
+ */
+public class Str {
+	
+	public static String fromLastDot(String s)
+	{
+		return fromLastChar(s, '.');
+	}
+	
+	
+	public static String toLastDot(String s)
+	{
+		return toLastChar(s, '.');
+	}
+	
+	
+	public static String fromLastChar(String s, char c)
+	{
+		if (s == null) return null;
+		return s.substring(s.lastIndexOf(c) + 1, s.length());
+	}
+	
+	
+	public static String toLastChar(String s, char c)
+	{
+		if (s == null) return null;
+		if (s.lastIndexOf(c) == -1) return s;
+		return s.substring(0, s.lastIndexOf(c));
+	}
+	
+	
+	/**
+	 * Repeat a string
+	 * 
+	 * @param repeated string
+	 * @param count
+	 * @return output
+	 */
+	public static String repeat(String repeated, int count)
+	{
+		String s = "";
+		for (int i = 0; i < count; i++)
+			s += repeated;
+		return s;
+	}
+	
+	
+	public static boolean isValidFilenameChar(char ch)
+	{
+		return isValidFilenameString(Character.toString(ch));
+	}
+	
+	
+	public static boolean isValidFilenameString(String filename)
+	{
+		return filename.matches("[a-zA-Z0-9 +\\-.,_%@#!]+");
+	}
+	
+	
+	public static String ellipsisStart(String orig, int length)
+	{
+		if (orig.length() > length) {
+			orig = "\u2026" + orig.substring(length, orig.length());
+		}
+		return orig;
+	}
+	
+	
+	public static String ellipsisEnd(String orig, int length)
+	{
+		if (orig.length() > length) {
+			orig = orig.substring(0, length - 1) + "\u2026";
+		}
+		return orig;
+	}
+}
diff --git a/src/mightypork/utils/eventbus/clients/DelegatingList.java b/src/mightypork/utils/eventbus/clients/DelegatingList.java
index 6af7ea3..29b94ff 100644
--- a/src/mightypork/utils/eventbus/clients/DelegatingList.java
+++ b/src/mightypork/utils/eventbus/clients/DelegatingList.java
@@ -11,7 +11,7 @@ import mightypork.utils.interfaces.Enableable;
  * 
  * @author Ondřej Hruška (MightyPork)
  */
-public class DelegatingList extends ClientList implements DelegatingClient, Enableable {
+public class DelegatingList extends ClientList implements DelegatingClient, Enableable, ToggleableClient {
 	
 	private boolean enabled = true;
 	
@@ -47,6 +47,13 @@ public class DelegatingList extends ClientList implements DelegatingClient, Enab
 	}
 	
 	
+	@Override
+	public boolean isListening()
+	{
+		return isEnabled();
+	}
+	
+	
 	@Override
 	public void setEnabled(boolean yes)
 	{
diff --git a/src/mightypork/utils/math/color/Grad.java b/src/mightypork/utils/math/color/Grad.java
new file mode 100644
index 0000000..7385b6a
--- /dev/null
+++ b/src/mightypork/utils/math/color/Grad.java
@@ -0,0 +1,30 @@
+package mightypork.utils.math.color;
+
+
+
+
+/**
+ * Linear gradient (each corner can have different color)
+ * 
+ * @author MightyPork
+ */
+public class Grad {
+	
+	public final Color leftTop, rightTop, rightBottom, leftBottom;
+	
+	
+	/**
+	 * Create a gradient
+	 * 
+	 * @param leftTop left top color
+	 * @param rightTop right top color
+	 * @param rightBottom right bottom color
+	 * @param leftBottom left bottom color
+	 */
+	public Grad(Color leftTop, Color rightTop, Color rightBottom, Color leftBottom) {
+		this.leftTop = leftTop;
+		this.rightTop = rightTop;
+		this.rightBottom = rightBottom;
+		this.leftBottom = leftBottom;
+	}
+}
diff --git a/src/mightypork/utils/math/color/GradH.java b/src/mightypork/utils/math/color/GradH.java
new file mode 100644
index 0000000..17d758c
--- /dev/null
+++ b/src/mightypork/utils/math/color/GradH.java
@@ -0,0 +1,16 @@
+package mightypork.utils.math.color;
+
+
+
+
+/**
+ * Linear horizontal gradient
+ * 
+ * @author MightyPork
+ */
+public class GradH extends Grad {
+	
+	public GradH(Color left, Color right) {
+		super(left, right, right, left);
+	}
+}
diff --git a/src/mightypork/utils/math/color/GradV.java b/src/mightypork/utils/math/color/GradV.java
new file mode 100644
index 0000000..b723d25
--- /dev/null
+++ b/src/mightypork/utils/math/color/GradV.java
@@ -0,0 +1,16 @@
+package mightypork.utils.math.color;
+
+
+
+
+/**
+ * Linear vertical gradient
+ * 
+ * @author MightyPork
+ */
+public class GradV extends Grad {
+	
+	public GradV(Color top, Color bottom) {
+		super(top, top, bottom, bottom);
+	}
+}