JList의 CustomReder (JList에 JLabel붙이기)

package example;

import java.awt.BorderLayout;

import javax.swing.DefaultListModel;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.SwingConstants;

public class CountryList extends JFrame {
	
	public CountryList() {		
		
		setSize(400,700);
		setVisible(true);
		getContentPane().setLayout(new BorderLayout(0, 0));		
		
		JScrollPane scrollPane = new JScrollPane();
		getContentPane().add(scrollPane, BorderLayout.CENTER);		
		


		 DefaultListModel<JLabel> listModel = new DefaultListModel<JLabel>();
		 

		ImageIcon icon = new ImageIcon("Country/Canada.png");
		JLabel ca = new JLabel("Canada", icon, SwingConstants.CENTER);
		listModel.addElement(ca);

		icon = new ImageIcon("Country/France.png");
		JLabel fr = new JLabel("France", icon, SwingConstants.CENTER);
		listModel.addElement(fr);
		
		icon = new ImageIcon("Country/Germany.png");
		JLabel gr = new JLabel("Germany", icon, SwingConstants.CENTER);
		listModel.addElement(gr);
		
		icon = new ImageIcon("Country/Japan.png");
		JLabel jp = new JLabel("Japan", icon, SwingConstants.CENTER);
		listModel.addElement(jp);
		
		icon = new ImageIcon("Country/Korea.png");
		JLabel kr = new JLabel("Korea", icon, SwingConstants.CENTER);
		listModel.addElement(kr);
		
		icon = new ImageIcon("Country/UK.png");
		JLabel uk = new JLabel("UK", icon, SwingConstants.CENTER);
		listModel.addElement(uk);
		
		icon = new ImageIcon("Country/USA.png");
		JLabel usa = new JLabel("USA", icon, SwingConstants.CENTER);
		listModel.addElement(usa);		
		
		JList<JLabel> CountryList = new JList<JLabel>(listModel); 
		scrollPane.setViewportView(CountryList);
		
	
	}

	public static void main(String[] args) {
		CountryList countrylist = new CountryList();		
	}

}

 

실행결과 :

 

디버깅을 해보니 JList에 표시되는 내용은 JLabel의 toString()의 값을 표시하고있었다.

JList에 CustomRender을 추가하여 수정하면

package example;

import java.awt.BorderLayout;
import java.awt.Component;

import javax.swing.DefaultListModel;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.ListCellRenderer;
import javax.swing.SwingConstants;

public class CountryList extends JFrame {
	
	public class CustomListRenderer extends JLabel implements ListCellRenderer<JLabel> {
		@Override
		public Component getListCellRendererComponent(JList<? extends JLabel> list, JLabel label, int index, boolean isSelected,
				boolean cellHasFocuse) {	
			return label;
		}
	}
	
	public CountryList() {		
		
		setSize(400,700);
		setVisible(true);
		getContentPane().setLayout(new BorderLayout(0, 0));		
		
		JScrollPane scrollPane = new JScrollPane();
		getContentPane().add(scrollPane, BorderLayout.CENTER);		

		 DefaultListModel<JLabel> listModel = new DefaultListModel<JLabel>();
		 

		ImageIcon icon = new ImageIcon("Country/Canada.png");
		JLabel ca = new JLabel("Canada", icon, SwingConstants.CENTER);
		listModel.addElement(ca);

		icon = new ImageIcon("Country/France.png");
		JLabel fr = new JLabel("France", icon, SwingConstants.CENTER);
		listModel.addElement(fr);
		
		icon = new ImageIcon("Country/Germany.png");
		JLabel gr = new JLabel("Germany", icon, SwingConstants.CENTER);
		listModel.addElement(gr);
		
		icon = new ImageIcon("Country/Japan.png");
		JLabel jp = new JLabel("Japan", icon, SwingConstants.CENTER);
		listModel.addElement(jp);
		
		icon = new ImageIcon("Country/Korea.png");
		JLabel kr = new JLabel("Korea", icon, SwingConstants.CENTER);
		listModel.addElement(kr);
		
		icon = new ImageIcon("Country/UK.png");
		JLabel uk = new JLabel("UK", icon, SwingConstants.CENTER);
		listModel.addElement(uk);
		
		icon = new ImageIcon("Country/USA.png");
		JLabel usa = new JLabel("USA", icon, SwingConstants.CENTER);
		listModel.addElement(usa);		
		
		JList<JLabel> CountryList = new JList<JLabel>(listModel); 

		CustomListRenderer MyRender = new CustomListRenderer();
		CountryList.setCellRenderer(MyRender);
		scrollPane.setViewportView(CountryList);		
	
	}	


	public static void main(String[] args) {
		CountryList countrylist = new CountryList();		
	}

}

실행결과 : 

정상적으로 잘 수행된 모습이다.

 

다른방법으로는 Country Class를 만들고 그에 맞게 CustomRederer를 재작성해주면 된다.

 

//Country.Java

package example;

public class Country{
	
	private String name;
	private String image_name;
	

	public Country(String name, String image_name) {
		this.name = name;
		this.image_name = image_name;
	}	
	
	public String getName() {
		return this.name;
	}
	
	public String getImageName() {
		return this.image_name;
	}
	
	
	@Override
	public String toString() {
		return this.name;
	}

}

//CountryList.java

package example;

import java.awt.BorderLayout;
import java.awt.Component;

import javax.swing.DefaultListModel;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.ListCellRenderer;

public class CountryList extends JFrame {

	public class CustomListRenderer extends JLabel implements ListCellRenderer<Country> {
		@Override
		public Component getListCellRendererComponent(JList<? extends Country> list, Country country, int index,
				boolean isSelected, boolean cellHasFocuse) {
			ImageIcon icon = new ImageIcon(country.getImageName());
			setIcon(icon);
			setText(country.getName());
			return this;
		}
	}

	public CountryList() {

		setSize(400, 700);
		setVisible(true);
		getContentPane().setLayout(new BorderLayout(0, 0));

		JScrollPane scrollPane = new JScrollPane();
		getContentPane().add(scrollPane, BorderLayout.CENTER);

		DefaultListModel<Country> listModel = new DefaultListModel<Country>();

		JList<Country> CountryList = new JList<Country>(listModel);
		CustomListRenderer MyRender = new CustomListRenderer();
		CountryList.setCellRenderer(MyRender);
		
		
		Country usa = new Country("USA", "Country/USA.png");
		Country ca = new Country("Canada", "Country/Canada.png");
		Country fr = new Country("France", "Country/France.png");
		Country gr = new Country("Germany", "Country/Germany.png");
		Country jp = new Country("Japan", "Country/Japan.png");
		Country kr = new Country("Korea", "Country/Korea.png");
		Country uk = new Country("UK", "Country/UK.png");

		listModel.addElement(usa);
		listModel.addElement(ca);
		listModel.addElement(fr);
		listModel.addElement(gr);
		listModel.addElement(jp);
		listModel.addElement(kr);
		listModel.addElement(uk);

		scrollPane.setViewportView(CountryList);

	}

	public static void main(String[] args) {
		CountryList countrylist = new CountryList();
	}

}

 

실행결과 :