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| import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FocusTraversalPolicy;
import java.awt.event.ActionEvent;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import javax.swing.AbstractAction;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
public class CardLayoutDemoFocus {
static ArrayList<Component> lstCbPnl = new ArrayList<Component>();
static ArrayList<Component> lstTfPnl = new ArrayList<Component>();
String current = COMBO_PANEL;
JPanel conteneur;
final static String COMBO_PANEL = "Card with combos";
final static String TEXTPANEL = "Card with JTextFields";
JComboBox cbBot1, cbBot2;
JTextField tftop, tfBot1, tfBot2;
static JFrame frame;
public void addComponentToPane(Container pane) {
String sActionF1 = "f1";
String sActionReleaseF1 = "rf1";
((JPanel) pane).getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).
put(KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0, false), sActionF1);
((JPanel) pane).getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).
put(KeyStroke.getKeyStroke(KeyEvent.VK_F1, 0, true), sActionReleaseF1);
((JPanel) pane).getActionMap().put(sActionF1, new ActionF1());
((JPanel) pane).getActionMap().put(sActionReleaseF1, new ActionF1Release());
JPanel topPane = new JPanel(); //use FlowLayout
cbBot1 = new JComboBox(new String[]{"cb1"});
cbBot2 = new JComboBox(new String[]{"cb2"});
tfBot1 = new JTextField("tfBot1", 9);
tfBot2 = new JTextField("tfBot2", 9);
// https://tips4java.wordpress.com/2010/03/14/dialog-focus/
tfBot2.addAncestorListener(new RequestFocusListener(false));
cbBot2.addAncestorListener(new RequestFocusListener(false));
tftop = new JTextField("tfTop", 19);
tftop.addFocusListener(new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
System.out.println("perdu ...");
}
});
topPane.add(tftop);
//Create "contenu 1".
JPanel card1 = new JPanel();
card1.add(cbBot1);
card1.add(cbBot2);
lstCbPnl.add(cbBot2);
lstCbPnl.add(cbBot1);
lstCbPnl.add(tftop);
//Create "contenu 2".
JPanel card2 = new JPanel();
card2.add(tfBot1);
card2.add(tfBot2);
lstTfPnl.add(tfBot2);
lstTfPnl.add(tfBot1);
lstTfPnl.add(tftop);
//Create the container that contains the "cardLayout".
conteneur = new JPanel(new CardLayout());
conteneur.add(card1, COMBO_PANEL);
conteneur.add(card2, TEXTPANEL);
pane.add(topPane, BorderLayout.PAGE_START);
pane.add(conteneur, BorderLayout.CENTER);
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event dispatch thread.
*/
private static void createAndShowGUI() {
frame = new JFrame("CardLayoutDemo");
frame.setPreferredSize(new Dimension(260, 130));
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
CardLayoutDemoFocus demo = new CardLayoutDemoFocus();
demo.addComponentToPane(frame.getContentPane());
//Display the window.
frame.pack();
frame.setFocusTraversalPolicy(new MyOwnFocusTraversalPolicy(lstCbPnl));
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
boolean first_f1 = true;
class ActionF1 extends AbstractAction {
@Override
public void actionPerformed(ActionEvent e) {
if (first_f1) {
first_f1 = false;
CardLayout cl = (CardLayout) (conteneur.getLayout());
ArrayList lFocus = null;
if (current.contains(COMBO_PANEL)) {
current = TEXTPANEL;
lFocus = lstTfPnl;
} else if (current.contains(TEXTPANEL)) {
current = COMBO_PANEL;
lFocus = lstCbPnl;
}
frame.setFocusTraversalPolicy(
new MyOwnFocusTraversalPolicy(lFocus));
cl.show(conteneur, current);
}
}
}
class ActionF1Release extends AbstractAction {
@Override
public void actionPerformed(ActionEvent actionEvent) {
first_f1 = true;
}
}
public static class MyOwnFocusTraversalPolicy
extends FocusTraversalPolicy {
ArrayList<Component> order;
public MyOwnFocusTraversalPolicy(ArrayList<Component> order) {
this.order = new ArrayList<Component>(order.size());
this.order.addAll(order);
}
@Override
public Component getComponentAfter(Container focusCycleRoot,
Component aComponent) {
int idx = (order.indexOf(aComponent) + 1) % order.size();
return order.get(idx);
}
@Override
public Component getComponentBefore(Container focusCycleRoot,
Component aComponent) {
int idx = order.indexOf(aComponent) - 1;
if (idx < 0) {
idx = order.size() - 1;
}
return order.get(idx);
}
@Override
public Component getDefaultComponent(Container focusCycleRoot) {
return order.get(0);
}
@Override
public Component getLastComponent(Container focusCycleRoot) {
return order.get(order.size() - 1);
}
@Override
public Component getFirstComponent(Container focusCycleRoot) {
return order.get(0);
}
}
} |
