PraktikumCommandDesingPattern/src/commands/CommandOpen.java

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package commands;

import java.io.File;
import java.util.prefs.Preferences;
import javax.swing.JFileChooser;
import model.model;
import view.gui;


/**
 * Open Command
 * @author matthias
 */
public class CommandOpen implements CommandInterface {
    private File data;
    private gui g;
    private Preferences pref;
    private String PATH_ID;
    private String FILE_ID;
    private model mdl;
    
    public CommandOpen(gui G, Preferences p, String pid, String fid, model m)
    {
        this.g = G;
        this.pref = p;
        this.PATH_ID = pid;
        this.FILE_ID = fid;
        this.data = null;
        this.mdl = m;
    }
    
    /**
     * overrides execute vom CommandInterface
     * Öffnet den File Dialog und führt dann die Funktion datenLesen aus dem Modell aus
     */
    @Override
    public void execute() {
        System.out.println("opening a file...");
        //System.out.println(this.pref.get(PATH_ID, "xyz"));
        JFileChooser fc = this.g.getFileChooser();
        try
        {
          fc.setCurrentDirectory(new File(this.pref.get(PATH_ID, "")));
        }
        catch(Exception ex)
        {
          System.err.println(ex);
        }
        if(fc.showOpenDialog(g) == JFileChooser.APPROVE_OPTION)
        {
          this.data = fc.getSelectedFile();
          this.g.getLblFilePath().setText(this.data.getAbsolutePath());
          this.pref.put(this.PATH_ID, this.data.getAbsolutePath());

          //System.out.println(this.pref.get(PATH_ID, "xyz"));
          try
          {
            this.mdl.datenLesen(this.data);
          }
          catch(Exception ex)
          {
            System.err.println(ex);
          }
        }
    }

    @Override
    public void undo() {
    }
    
}