Implementation of a scrolling string.

ScrollingString.java

public class ScrollingString {
	  private String original;
    private int width;
    private int position;
    private ChatColor color = ChatColor.RESET;

    public ScrollingString(String original, int width) {
        this.original = original;
        //Allow for colors
        this.width = width-2;
        if (width <= 0)
            throw new IllegalArgumentException("Width value has to be greater than 0");
        else if (original.length() < width)
            throw new IllegalArgumentException("String length has to be greater than the width value");
    }
    
    public String scrollForward() {
        position++;
        if (position == original.length())
            reset();
        return getScrolled();
    }

    public void scrollBackward() {
        position--;
        if (position < 0)
            position = original.length() - 1;
    }

    public void reset() {
        position = 0;
    }

    public void setOriginal(String original) {
        if (original.length() < width)
            throw new IllegalArgumentException("String length has to be greater than the width value");
        this.original = original;
        reset();
    }

    public void append(String s) {
        original += s;
    }

    public String getOriginal() {
        return this.original;
    }

    public String getScrolled() {
        StringBuilder sb = new StringBuilder(original);
        int e = position + width;
        if (position > 0) {
            //Check for color codes before the current iteration
            if (original.charAt(position - 1) == ChatColor.COLOR_CHAR) {
                color = ChatColor.getByChar(original.charAt(position));
                //Move one further so the letter does not appear
                position++;
                //Return the string with the new position
                return getScrolled();
            }
            //Check for color in the first letter of the current iteration
            else if (original.charAt(position) == ChatColor.COLOR_CHAR) {
                color = ChatColor.getByChar(original.charAt(position+1));
                //If found, move two positions forward to remove the color code spaces
                position += 2;
                //Return the string with the new position
                return getScrolled();
            }
        }
        if (e >= original.length()) {
            //Checks for color codes in the last letter of the current iteration
            int secondPosition = (width - (original.length() - position) - 1 < 0) ? 0 : (width - (original.length() - position) - 1);
            if (sb.charAt(secondPosition) == ChatColor.COLOR_CHAR) {
                sb.setCharAt(secondPosition, ' ');
            }
        } else {
            //Checks for color codes in the last letter of the current iteration
            if (sb.charAt(e - 1) == ChatColor.COLOR_CHAR) {
                sb.setCharAt(e - 1, ' ');
            }
        }
        return e > original.length() ? color + sb.substring(position, original.length()) + sb.substring(0, width - (original.length() - position)) : color + sb.substring(position, e);
    }

    public int getWidth() {
        return this.width;
    }

    public int getPosition() {
        return this.position;
    }
}