Merged DISABLE_CURSOR option from fluddokt/opsu.

src/itdelatrisu/opsu/ui/Cursor.java

@@ -115,6 +115,9 @@ public class Cursor {
 	 * @param mousePressed whether or not the mouse button is pressed
 	 */
 	public void draw(int mouseX, int mouseY, boolean mousePressed) {
+		if (Options.isCursorDisabled())
+			return;
+
 		// determine correct cursor image
 		Image cursor = null, cursorMiddle = null, cursorTrail = null;
 		boolean beatmapSkinned = GameImage.CURSOR.hasBeatmapSkinImage();

src/itdelatrisu/opsu/ui/DropdownMenu.java

@@ -375,7 +375,7 @@ public class DropdownMenu<E> extends AbstractComponent {
 	/**
 	 * Selects the item at the given index.
 	 * @param index the list item index
-	 * @throws IllegalArgumentException if index < -1 or index is greater than or equal to size
+	 * @throws IllegalArgumentException if {@code index} is negative or greater than or equal to size
 	 */
 	public void setSelectedIndex(int index) {
 		if (index < 0 || index >= items.length)

src/itdelatrisu/opsu/ui/UI.java

@@ -119,7 +119,7 @@ public class UI {
 	}
 
 	/**
-	 * Draws the global UI components: cursor, FPS, volume bar, bar notifications.
+	 * Draws the global UI components: cursor, FPS, volume bar, tooltips, bar notifications.
 	 * @param g the graphics context
 	 */
 	public static void draw(Graphics g) {
@@ -131,7 +131,7 @@ public class UI {
 	}
 
 	/**
-	 * Draws the global UI components: cursor, FPS, volume bar, bar notifications.
+	 * Draws the global UI components: cursor, FPS, volume bar, tooltips, bar notifications.
 	 * @param g the graphics context
 	 * @param mouseX the mouse x coordinate
 	 * @param mouseY the mouse y coordinate