Depois da loucura
nunca vi uma porra dessas que foi Newell's Old Boys 10 x 9 Boca Jr nos penaltis, o chocolate que o Nautico levou e da amarelada do Florminense, estou nos acréscimos do meu dia, rindo e postando uma dica de Drap and Drop com Java.
É muito simples! Estou usando um JList habilitando o seu DRAG, e o JTable associado com DropTarget para receber a String arrastada da JList.
package com.blogspot.receitastecnologicas.dnd;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetDropEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.AbstractListModel;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.DropMode;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
public class DragAndDrop extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private AbsModel listModel = new AbsModel<>();
private JTable table;
private DefaultTableModel tableModel;
JList listDrag;
public DragAndDrop() {
super("DnD - Receitas Tecnologicas");
listDrag = new JList(listModel);
listDrag.setFocusable(false);
listDrag.setDragEnabled(true); // habilitando o Drag
listDrag.setBorder(BorderFactory.createLoweredBevelBorder());
/***
* @TODO NÃO USE DefaultTableModel - USE AbstractTableModel
*/
tableModel = new DefaultTableModel(new Object[] { "TO DO", "DONE" }, 10);
table = new JTable(tableModel);
table.setRowHeight(48);
// table.setEditingColumn(2);
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setDropMode(DropMode.INSERT);
//O javadoc já diz tudo: Associate a DropTarget with this component. The Component will receive drops only if it is enabled.
table.setDropTarget(new DropTarget() {
@Override
public synchronized void drop(DropTargetDropEvent dtde) {
try {
Point point = dtde.getLocation();
int column = table.columnAtPoint(point);
int row = table.rowAtPoint(point);
table.addRowSelectionInterval(row, row);
table.addColumnSelectionInterval(column, column);
// inserindo na tabela
String text = (String) listModel.getElementAt(listDrag
.getSelectedIndex());
tableModel.setValueAt(text, table.getSelectedRow(),
table.getSelectedColumn());
} catch (Exception e) {
e.printStackTrace();
}
super.drop(dtde);
}
});
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));
JPanel wrap = new JPanel();
wrap.add(new JLabel("Selecione e Arraste:"));
wrap.add(listDrag);
panel.add(Box.createHorizontalStrut(4));
panel.add(Box.createGlue());
panel.add(wrap);
panel.add(Box.createGlue());
panel.add(Box.createHorizontalStrut(4));
getContentPane().add(panel, BorderLayout.NORTH);
JScrollPane sp = new JScrollPane(table);
getContentPane().add(sp, BorderLayout.CENTER);
getContentPane().setPreferredSize(new Dimension(500, 500));
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
UIManager.put("swing.boldMetal", Boolean.FALSE);
DragAndDrop dragAndDrop = new DragAndDrop();
dragAndDrop.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
dragAndDrop.pack();
dragAndDrop.setVisible(true);
}
});
}
}
@SuppressWarnings("hiding")
class AbsModel extends AbstractListModel {
/**
*
*/
private static final long serialVersionUID = 1L;
List list = new ArrayList();
public AbsModel() {
list.add((String) "Sarapatel");
list.add((String) "Buchada");
list.add((String) "Rabada");
list.add((String) "Carne de Sol com Macaxeira");
list.add((String) "Pirão");
}
@Override
public int getSize() {
// TODO Auto-generated method stub
return list.size();
}
@Override
public String getElementAt(int index) {
// TODO Auto-generated method stub
return list.get(index);
}
}
