[英]JGoodies Binding: binding an object with JCombobox and default values
I have the following problem: 我有以下问题:
I want to bind a JCombobox in my View with my model 'DomainModel', so that I can get later get it with 'AnotherModel'.getModel(); 我想将View中的JCombobox与模型“ DomainModel”绑定,以便以后可以通过“ AnotherModel”获得它。getModel();
I wrote an own CellRenderer to make it look like 'ID - Name'. 我编写了自己的CellRenderer,使其看起来像“ ID-名称”。 But when I select the value of the Combobox and I call 'AnotherModel'.getModel the value isn't saved in it.
但是,当我选择组合框的值并调用“ AnotherModel” .getModel时,该值未保存在其中。
Isn't it possible to bind complex datatypes with JGoodies Bindings? 用JGoodies绑定绑定复杂的数据类型是不可能的吗? With String it works fine but I want to bind an object of 'DomainModel'
使用String可以正常工作,但我想绑定“ DomainModel”对象
Here is the simplified code: 这是简化的代码:
The View: 风景:
public class View extends JPanel {
private JComboBox<DomainModel> cmbValueModel;
public View(AntotherModel antotherModel, List<DomainModel> manyDomainModels) {
PresentationModel<DomainModel> domainModel = new PresentationModel<DomainModel>();
domainModel.setBean(antotherModel.getModel());
cmbValueModel = BasicComponentFactory.createComboBox(new SelectionInList<DomainModel>(manyDomainModels, domainModel.getModel(DomainModel.PROPERTYNAME_NAME)));
Bindings.bind(cmbValueModel, new SelectionInList<>(), "");
cmbValueModel.setRenderer(new DefaultListCellRenderer(){
@Override
public Component getListCellRendererComponent(JList<?> list,
Object value, int index, boolean isSelected,
boolean cellHasFocus) {
return super.getListCellRendererComponent(list, value == null ? null : ((DomainModel)value).getId() + " - " + ((DomainModel)value).getName() , index, isSelected,
cellHasFocus);
}
});
}
}
The domain: 域:
public class DomainModel extends Model{
public static final String PROPERTYNAME_NAME = "name";
@GeneratedValue
private int id;
private String name;
public void setName(String name) {
String oldVal = this.name;
this.name = name;
changeSupport.firePropertyChange(PROPERTYNAME_NAME, oldVal, name);
}
public String getName(){
return name;
}
public int getId(){
return id;
}
}
Another model: 另一种型号:
public class AntotherModel extends Model{
public static final String PROPERTYNAME_MODEL = "model";
private int id;
private DomainModel model;
public int getId() {
return id;
}
public DomainModel getModel() {
return model;
}
public void setId(int id) {
this.id = id;
}
public void setModel(DomainModel model) {
DomainModel oldVal = this.model;
this.model = model;
changeSupport.firePropertyChange(PROPERTYNAME_MODEL, oldVal, model);
}
}
Your code doesn't compile or run so it's rather hard to figure out what you are trying to do. 您的代码无法编译或运行,因此很难弄清您要执行的操作。 The example below displays a combobox binding to a list of DomainModels if this is what you are after;
如果您要这样做,下面的示例将显示一个组合框绑定到DomainModels列表的方法; you can add a valueChangeListener to the selectionInList to do something when the user changes the selection.
您可以将valueChangeListener添加到selectionInList中,以在用户更改选择内容时执行某些操作。 HTH
高温超导
import java.awt.Component;
import java.util.ArrayList;
import java.util.List;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.list.SelectionInList;
public class View extends JPanel {
private JComboBox comboBox;
public View(AnotherModel anotherModel, List<DomainModel> manyDomainModels) {
final SelectionInList<DomainModel> selectionInList = new SelectionInList<DomainModel>(manyDomainModels);
comboBox = BasicComponentFactory.createComboBox(selectionInList);
comboBox.setRenderer(new DefaultListCellRenderer() {
@Override
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
return super.getListCellRendererComponent(list, value == null ? null : ((DomainModel) value).getId() + " - "
+ ((DomainModel) value).getName(), index, isSelected, cellHasFocus);
}
});
add(comboBox);
}
public static void main(String[] args) {
final JFrame frame = new JFrame();
final AnotherModel anotherModel = new AnotherModel();
final List<DomainModel> manyDomainModels = new ArrayList<DomainModel>();
final DomainModel domainModel1 = new DomainModel();
domainModel1.setName("foo");
final DomainModel domainModel2 = new DomainModel();
domainModel2.setName("bar");
final DomainModel domainModel3 = new DomainModel();
domainModel3.setName("baz");
manyDomainModels.add(domainModel1);
manyDomainModels.add(domainModel2);
manyDomainModels.add(domainModel3);
frame.getContentPane().add(new View(anotherModel, manyDomainModels));
frame.pack();
frame.setVisible(true);
}
}
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