我知道我的第一个实现方式并不适合我的要求。首先，使用DefaultTableModel是一个很大的限制，
因为您只能使用Vector，Object，String …就我而言，我想通过jtable操纵一组Vehicles。因此，第一件事：
Vehicle.java
public class Vehicle { enum TipoVeicolo { AUTO, FURGONE, AUTOCARRO, AUTOARTICOLATO }; private String targa; private TipoVeicolo tipoVeicolo; private String marca; private Stato stato private float ptt; //... others... // constructor public Vehicle(String targa, TipoVeicolo tipoVeicolo, String marca, Stato stato, float ptt) { this.targa=targa; this.tipoVeicolo=tipoVeicolo; // ... bla bla } // GET and SET methods... //...}Now, I had already done this. The new is the class that extends
AbstractTableModel (and not DefaultTableModel)
VehicleTableModel.java
public class VehicleTableModel extends AbstractTableModel { // private objects private ArrayList<Vehicle> vehicles; private COLUMNS[] header; // possible column names: public enum COLUMNS { IMAGE_COLUMN, TARGA_COLUMN, CAR_TYPE_COLUMN, //... }; // if I want I can add others... /////////////////////////////////////////////////////// // Constructor: public VehicleTableModel(COLUMNS[] headerTable) { this.vehicles = new ArrayList<Vehicle>() this.header = headerTable; } /////////////////////////////////////////////////////// // obligatory override methods (from AbstractTableModel): @Override public int getColumnCount() { return header.length; } @Override public int getRowCount() { return vehicles.size(); } // this works! :D @Override public Object getValueAt(int row, int col) { Object value = "?"; Vehicle v = vehicles.get(row); if (v!=null) { COLUMNS column = header[col]; switch (column) { case IMAGE_COLUMN: int i = findColumn(COLUMNS.CAR_TYPE_COLUMN); // find the right column index Object tipo = getValueAt(row, i); value = (ImageIcon)findImageByColumnCarType(tipo); // find the right icon for the type of vehicle. break; case TARGA_COLUMN: value = v.getTarga(); break; case CAR_TYPE_COLUMN: value = v.getTipoVeicolo(); break; //... } } return value; } /////////////////////////////////////////////////////// // My methods: public void addRow(Vehicle vehicle) { if (!vehicles.contains(vehicle)){ vehicles.add(vehicle); fireTableRowsInserted(0, getRowCount()); // I'm not so sure of this.. } public void removeRow(int row) { vehicles.remove(row); fireTableRowsDeleted(row, row); } public Vehicle getVehicleAt(int row) { return vehicles.get(row); } // found the corresponding column index public int findColumn(COLUMNS columnName) { for (int i=0; i<getColumnCount(); i++) if (columnName.equals(header[i])) return i; return -1; } // found the right image protected static ImageIcon findImageByColumnCarType(Object value) { ImageIcon i = null; if (value.equals(TipoVeicolo.AUTO)) i = new ImageIcon(VehicleTableModel.class.getResource("/images/Car-icon_32.png")); else if (value.equals(TipoVeicolo.AUTOARTICOLATO)) i = new ImageIcon(VehicleTableModel.class.getResource("/images/City-Truck-blue-icon_32.png")); //... return i; } // knows if exist a value (of a column) in all rows private boolean controllIfExist(Object value, int col) { boolean bool = false; for (int i=0; i<getRowCount();i++){ if (value.equals(getValueAt(i, col))){ bool=true; break; } } return bool; } /////////////////////////////////////////////////////// // other methods (from AbstractTableModel) to ovveride: // this works! :D @Override public Class<?> getColumnClass(int col) { Class<?> c; COLUMNS column = header[col]; if (column.equals(COLUMNS.IMAGE_COLUMN)) c = ImageIcon.class; else if (column.equals(COLUMNS.CAR_TYPE_COLUMN)) c = JComboBox.class; // else if blabla.... else c = super.getColumnClass(col); return c; } // this works! :D @Override public String getColumnName(int col) { COLUMNS column = header[col]; if (column.equals(COLUMNS.IMAGE_COLUMN)) return " "; else if (column.equals(COLUMNS.TARGA_COLUMN)) return "Targa"; else if (column.equals(COLUMNS.CAR_TYPE_COLUMN)) return "Tipo veicolo"; // else if blabla... return super.getColumnName(col); }; @Override public boolean isCellEditable(int row, int col) { return true; } @Override public void setValueAt(Object value, int row, int col) { Vehicle v = vehicles.get(row); boolean flag = false; if (v!=null) { COLUMNS column = header[col]; switch (column) { case TARGA_COLUMN: if (!v.getTarga().equals(value)){ if (!controllIfExist(value, col)){ v.setTarga((String) value); flag = true; } } break; case CAR_TYPE_COLUMN: if (!v.getTipoVeicolo().equals(value)){ v.setTipoVeicolo((TipoVeicolo) value); flag = true; } break; // other cases bla bla... } if (flag) // update only if have found modify fireTableRowsUpdated(0, getRowCount()); // or fireTableRowsUpdated(row, row); ? } }}After this, for commodity, I create a VehicleTable (extends JTable). Can it
look like useless, but is right for my objective… You can see the right
settings for the special cells (cell with JComboBox, for example)
VehicleTable.java
public class VehicleTable extends JTable {public VehicleTable(VehicleTableModel vehicleModel) { super(vehicleModel); this.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); this.setColumnSelectionAllowed(false); this.setCellSelectionEnabled(false); this.setRowSelectionAllowed(true); this.setShowHorizontalLines(true); this.setRowHeight(25); this.setPreferredScrollableViewportSize(new Dimension(700,150)); this.setFillsViewportHeight(true); //////////////////////////////////// // Now I set the columns features: int flag=-1; TableColumn column; // Icon Column: flag = vehicleModel.findColumn(COLUMNS.IMAGE_COLUMN); if (flag!=-1){ column = this.getColumnModel().getColumn(flag); column.setMinWidth(80); column.setMaxWidth(80); } // Targa Column: flag = vehicleModel.findColumn(COLUMNS.TARGA_COLUMN); if (flag!=-1){ column = this.getColumnModel().getColumn(flag); column.setMinWidth(100); column.setMaxWidth(100); } // Tipo veicolo Column flag = vehicleModel.findColumn(COLUMNS.CAR_TYPE_COLUMN); if (flag!=-1){ column = this.getColumnModel().getColumn(flag); column.setCellEditor(new DefaultCellEditor( new JComboBox<TipoVeicolo>(TipoVeicolo.values()))); column.setMinWidth(150); column.setMaxWidth(150); } //others...}Finally, we can use this. For example in my GUI
ShipperAgentGUI.java (an extract. I focus on ONE table)
public class ShipperAgentGUI extends Jframe implements ActionListener { // ... bla bla private COLUMNS[] parkModelHeader = {COLUMNS.IMAGE_COLUMN, COLUMNS.TARGA_COLUMN, COLUMNS.CAR_TYPE_COLUMN, COLUMNS.MARCA_COLUMN, COLUMNS.STATE_COLUMN, COLUMNS.PTT_COLUMN }; private VehicleTableModel parkModel = new VehicleTableModel(parkModelHeader); private VehicleTable parkTable; private Coordinator parkCoordinator; // long story protected ShipperAgent shipperAgent; // my agent, my third-part software // ... bla bla // Constructor: ShipperAgentGUI(ShipperAgent agent) { //... bla bla // Park Table: parkTable = new VehicleTable(parkModel); JScrollPane parkScrollPane = new JScrollPane(parkTable); pnlTableParkPanel.add(parkScrollPane); //... bla bla // Coordinators (Mediator pattern's ispired) // Long story. Is for coordinating with my agent and others tables in my GUI parkCoordinator = new Coordinator(shipperAgent, parkModel) { @Override public void notifyAndAddRow(final Vehicle vehicle) { shipperAgent.newTruck(vehicle.getTarga()); // comunicate with the agent SwingUtilities.invokeLater(new Runnable() { @Override public void run() { parkModel.addRow(vehicle); } }); } @Override public void notifyAndDeleteRow(final int rowIndex) { final Vehicle v = this.tableModel.getVehicleAt(rowIndex); // bla bla shipperAgent.removeTruck(v.getTarga()); // comunicate with the agent SwingUtilities.invokeLater(new Runnable() { @Override public void run() { //parkModel.removeRow(v); parkModel.removeRow(rowIndex); } }); }@Overridepublic void notifyRowUpdated() { parkModel.addTableModelListener(new TableModelListener() { public void tableChanged(TableModelEvent e) { switch (e.getType()) { case (TableModelEvent.DELETE): parkTable.repaint(); break; case (TableModelEvent.UPDATE): int row = e.getLastRow(); int col = parkModel.getIndexColumn(COLUMNS.STATE_COLUMN); if (parkModel.getValueAt(row, col).equals(Stato.DISPONIBILE)) addVehicle(availablesCoordinator, parkModel.getVehicleAt(row)); else //removeVehicle(availablesCoordinator, row); error! availablesModel.removeRow(parkModel.getVehicleAt(row)); repaint(); break; } } });} }; ArrayList<Vehicle> veicoli = shipperAgent.getVehicles(); // from agent Iterator<Vehicle> I = veicoli.iterator(); while (I.hasNext()){ addVehicle(parkCoordinator, I.next()); } //... bla bla } // end of constructor // ... others methods... private void addVehicle(Coordinator coordinator, Vehicle v) { coordinator.notifyAndAddRow(v); } public void removeVehicle(Coordinator coordinator, int index) { coordinator.notifyAndDeleteRow(index); } // ...}
