FullBorder.java

package decorator;

public class FullBorder extends Border {


    public FullBorder(Display display) {
        super(display);
    }

    @Override
    public int getRows() {
        return 1 + display.getRows() + 1;
    }

    @Override
    public int getColumns() {
        return 1 + display.getColumns() + 1;
    }

    @Override
    public String getRowText(int row) {
        if (row == 0)
            return "+" + makeLine('-', display.getColumns());
        else if (row == display.getRows() + 1)
            return "+" + makeLine('-', display.getColumns());
        else
            return "|" + display.getRowText(row - 1) + "|";
    }

    private String makeLine(char ch, int count) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < count; i++) {
            sb.append(ch);
        }
        return sb.toString();
    }
}