PraktikumCommandDesingPattern/src/commands/CommandDelete.java

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package commands;

import java.io.File;
import java.util.Stack;
import java.util.prefs.Preferences;
import model.model;
import view.gui;

/**
 * Delete Command
 * @author matthias
 */
public class CommandDelete implements CommandInterface {
    private File data;
    private gui g;
    private model mdl;
    private Preferences prfs;
    private String pid;
    private Stack adressEintraegeDaten;
    private Stack pos;
    
    
    public CommandDelete(gui G, Preferences p, model mdl, String pid)
    {
        this.g = G;
        this.mdl = mdl;
        this.prfs = p;
        this.pid = pid;
        this.data = null;
        adressEintraegeDaten = new Stack();
        this.pos = new Stack();
    }
    /**
     * overrides execute vom CommandInterface
     * hier wird eeintragLoeschen vom Model aufgerufen
     * davor werden die gelöschten Daten im Stack gespeichert
     */
    @Override
    @SuppressWarnings("unchecked")
    public void execute() {

        try
        {
          int sel = this.g.getContentTable1().getjTable().getSelectedRow();
          
          for(int i = 0; i < mdl.getColumnCount(); i++)
          {
            Object v = mdl.getValueAt(sel, i);
            this.adressEintraegeDaten.push(v);
          }
          this.pos.push(sel);
          this.mdl.eintragLoeschen(sel);
        }
        catch(Exception ex)
        {
          System.err.println(ex);
        }
        
        //System.out.println(this.pref.get(PATH_ID, "xyz"));

        
    }
    /**
     * overrides undo vom CommandInterface
     * hier werden die gelöschten Daten wieder ins Modell geschrieben
     */
    @Override
    public void undo() {
      System.out.println("del_undo");
      int pos_i = (int) this.pos.pop();
      
      this.mdl.eintragHinzufuegenAt(pos_i);
      for(int i = mdl.getColumnCount()-1; i >= 0; i--)
      {
        this.mdl.setValueAt(this.adressEintraegeDaten.pop(), pos_i, i);            
      }
      this.mdl.fireTableDataChanged();
    }
    
}