如何更新EventList列表以更新JTable？这是我的工作：
String[] headers = new String[]{"MNO", "NAME", "ID/REG No", "PHONE"};
String[] properties = new String[]{"milkNo", "fullName", "nationalId", "phone1"};
TextFilterator<Member> personTextFilterator = new TextFilterator<Member>() {
@Override
public void getFilterStrings(List list, Member m) {
list.add(m.getFullName());
list.add(m.getMilkNo());
list.add(m.getNationalId());
list.add(m.getPhone1());
}
};
MatcherEditor<Member> textMatcherEditor = new TextComponentMatcherEditor<Member>(txtFilter, personTextFilterator);
FilterList<Member> filterList = new FilterList<Member>(eventList, textMatcherEditor);
TableFormat tf = GlazedLists.tableFormat(properties, headers);
model = new EventTableModel<Member>(filterList, tf);
selectionModel = new EventSelectionModel<Member>(filterList);
tblMembers.setSelectionModel(selectionModel);
tblMembers.setModel(model);
当我过滤表中的记录并选择一条记录并尝试更新它时，它会在表中创建一条新记录
int updatedRow = tblMembers.convertRowIndexToModel(tblMembers.getSelectedRow());
eventList.set(updatedRow, updatedMember);
最佳答案
一旦使用GlazedLists为JTable提供动力，则应仅使用EventTableModel和EventSelectionModel与JTable进行交互。您犯的错误是直接在JTable中查询选定的行并获取其索引-但是JTable无法理解它是否由EventList支持，该EventList可能对其中的项目进行排序/过滤。因此，JTable中的第i行不一定与EventList中的元素i相对应。
在您的代码中，您实际上已经设置了一个EventSelectionModel，现在只需要使用它即可。
if (!selectionModel.isSelectionEmpty()) {
EventList<Member> selectedMembers = selectionModel.getSelected();
for (int i = 0; i<selectedMembers.size(); i++) {
Member member = selectedMembers.get(i);
//update accordingly...
//member.setXXX(...);
selectedMembers.set(i, member);
}
}
您必须记住，JTables支持多个行选择（尽管可以将其配置为仅允许单行选择），因此EventSelectionModel明智地将返回所有选定行的EventList，即使仅选择了一个。因此，您需要遍历返回的列表。包含所选项目的EventList由源EventList支持是一个额外的便利，因此您可以直接对该子列表进行更改。
高级
当然，EventList非常适合观察列表的基本变化：删除，插入，更新（即，将索引i处的现有对象替换为另一个对象）。但是，如果不是直接调用
selectedMembers.set()，而是直接在EventList中更新对象，然后让GlazedLists检测该属性更改，那不是很好吗？嗯，那也是可能的。有一个有用的列表类型，称为
ObservableElementList，在这里它将侦听其包含的每个对象的属性更改并相应地刷新。这比必须在列表中找到名为eventList.set()的对象要方便得多。您首先需要使您的类支持属性侦听器，即是适当的Java bean，然后使用
ObservableElementList.Connector。我已经创建了一个小而完整的例子来说明这一点。在此示例中，在顶部有一个用于过滤的文本输入，一个包含作者简短列表的表，在底部有一个按钮，它将更新任何选定行的名称。
import ca.odell.glazedlists.BasicEventList;
import ca.odell.glazedlists.EventList;
import ca.odell.glazedlists.FilterList;
import ca.odell.glazedlists.GlazedLists;
import ca.odell.glazedlists.ObservableElementList;
import ca.odell.glazedlists.TextFilterator;
import ca.odell.glazedlists.matchers.MatcherEditor;
import ca.odell.glazedlists.swing.EventSelectionModel;
import ca.odell.glazedlists.swing.EventTableModel;
import ca.odell.glazedlists.swing.TextComponentMatcherEditor;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
public class GlazedListSelectionObservable {
private JFrame frame;
private JTable table;
private JTextField txtInput;
private EventList<Person> people;
private EventSelectionModel<Person> selectionModel;
public GlazedListSelectionObservable() {
setupGui();
setupGlazedLists();
populatedList();
frame.setVisible(true);
}
private void setupGui() {
frame = new JFrame("GlazedLists Selection Example");
frame.setSize(600, 600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
txtInput = new JTextField();
table = new JTable();
frame.getContentPane().add(new JScrollPane(table), BorderLayout.CENTER);
JButton updateTableButton = new JButton("Update selected row");
updateTableButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!selectionModel.isSelectionEmpty()) {
EventList<Person> selectedPeople = selectionModel.getSelected();
for (Person person: selectedPeople) {
person.setFirstName("David");
person.setLastName("Baldacci");
}
}
}
});
frame.getContentPane().add(txtInput, BorderLayout.NORTH);
frame.getContentPane().add(updateTableButton, BorderLayout.SOUTH);
}
private void populatedList() {
people.add(new Person("John", "Grisham"));
people.add(new Person("Patricia", "Cornwell"));
people.add(new Person("Nicholas", "Sparks"));
people.add(new Person("Andy", "Weir"));
people.add(new Person("Elizabeth", "George"));
}
private void setupGlazedLists() {
people = new BasicEventList<Person>();
MatcherEditor<Person> textMatcherEditor = new TextComponentMatcherEditor<Person>(txtInput, new PersonTextFilterator());
ObservableElementList.Connector<Person> personConnector = GlazedLists.beanConnector(Person.class);
EventList<Person> observedPeople = new ObservableElementList<Person>(people, personConnector);
FilterList<Person> filteredPeople = new FilterList<Person>(observedPeople, textMatcherEditor);
EventTableModel model = new EventTableModel(filteredPeople, GlazedLists.tableFormat(new String[]{"firstName", "lastName"} , new String[]{"First Name", "Last Name"}));
selectionModel = new EventSelectionModel<Person>(filteredPeople);
table.setModel(model);
table.setSelectionModel(selectionModel);
}
class PersonTextFilterator implements TextFilterator<Person> {
@Override
public void getFilterStrings(List<String> list, Person person) {
list.add(person.getFirstName());
list.add(person.getLastName());
}
}
public class Person {
private String firstName;
private String lastName;
private final PropertyChangeSupport support = new PropertyChangeSupport(this);
public Person() {
}
public Person(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public void setFirstName(String firstName) {
final String oldFirstName = this.firstName;
this.firstName = firstName;
support.firePropertyChange("firstName", oldFirstName, firstName);
}
public void setLastName(String lastName) {
final String oldLastName = this.lastName;
this.lastName = lastName;
support.firePropertyChange("lastName", oldLastName, lastName);
}
public void addPropertyChangeListener(PropertyChangeListener l) {
support.addPropertyChangeListener(l);
}
public void removePropertyChangeListener(PropertyChangeListener l) {
support.removePropertyChangeListener(l);
}
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new GlazedListSelectionObservable();
}
});
}
}