LevelsMenu.java

package rabbitescape.engine.menu;

import static rabbitescape.engine.util.Util.*;

import java.util.List;

public class LevelsMenu extends Menu
{
    private final String levelsDir;
    private final LevelsCompleted levelsCompleted;

    public LevelsMenu(
        String levelsDir,
        LevelsList levelsList,
        LevelsCompleted levelsCompleted
    )
    {
        this(
            levelsDir,
            levelsCompleted,
            menuItems( levelsDir, levelsList )
        );
    }

    private LevelsMenu(
        String levelsDir, LevelsCompleted levelsCompleted, MenuItem[] items )
    {
        super( "Choose a level:", items );

        this.levelsDir = levelsDir;
        this.levelsCompleted = levelsCompleted;

        refresh();
    }

    private static MenuItem[] menuItems(
        String levelsDir,
        LevelsList levelsInfo
    )
    {
        List<LevelsList.LevelInfo> levels = levelsInfo.inDir( levelsDir );

        MenuItem[] ret = new MenuItem[ levels.size() ];

        for ( IdxObj<LevelsList.LevelInfo> info : enumerate1( levels ) )
        {
            ret[info.index - 1] = new LevelMenuItem(
                levelsDir + "/" + info.object.fileName + ".rel",
                levelsDir,
                info.index,
                true,
                info.object.name
            );
        }

        return ret;
    }

    @Override
    public void refresh()
    {
        int lastEnabled =
            levelsCompleted.highestLevelCompleted( levelsDir ) + 1;

        for ( IdxObj<MenuItem> item : enumerate1( items ) )
        {
            item.object.enabled = ( item.index <= lastEnabled );
        }
    }
}