package system;

public class CombineTopBottom extends java.lang.Object implements Diagram {

	char[][] board = {};
	int animationType = 0;

	// CONSTRUCTOR

	public CombineTopBottom(Diagram top, Diagram bottom, int animationType) {

		if (bottom.getNumberCols() != top.getNumberCols()) {
			throw new IllegalArgumentException(
					"Error: number of columns are different");
		}

		this.animationType = animationType;
		this.board = TwoDimArrayUtil.appendTopBottom​(top.getBoard(),
				bottom.getBoard());

	}

	// METHODS

	public char[][] getBoard() {
		
		return board;
		
	}

	public int getNumberRows() {

		return board.length;
		
	}

	public int getNumberCols() {

		return board[0].length;
		
	}

	public char[][] nextAnimationStep() {

		if (animationType == 1) {
			
			TwoDimArrayUtil.rotateLeftOneColumn​(board);
			
		} else if (animationType == 2) {
			
			TwoDimArrayUtil.rotateTopOneRow​(board);
		}

		return board;

	}
}