下面列出了怎么用java.awt.event.FocusEvent的API类实例代码及写法，或者点击链接到github查看源代码。
static FocusEvent retargetUnexpectedFocusEvent(FocusEvent fe) {
synchronized (heavyweightRequests) {
// Any other case represents a failure condition which we did
// not expect. We need to clearFocusRequestList() and patch up
// the event as best as possible.
if (removeFirstRequest()) {
return (FocusEvent)retargetFocusEvent(fe);
}
Component source = fe.getComponent();
Component opposite = fe.getOppositeComponent();
boolean temporary = false;
if (fe.getID() == FocusEvent.FOCUS_LOST &&
(opposite == null || isTemporary(opposite, source)))
{
temporary = true;
}
return new CausedFocusEvent(source, fe.getID(), temporary, opposite,
CausedFocusEvent.Cause.NATIVE_SYSTEM);
}
}
static FocusEvent retargetUnexpectedFocusEvent(FocusEvent fe) {
synchronized (heavyweightRequests) {
// Any other case represents a failure condition which we did
// not expect. We need to clearFocusRequestList() and patch up
// the event as best as possible.
if (removeFirstRequest()) {
return (FocusEvent)retargetFocusEvent(fe);
}
Component source = fe.getComponent();
Component opposite = fe.getOppositeComponent();
boolean temporary = false;
if (fe.getID() == FocusEvent.FOCUS_LOST &&
(opposite == null || isTemporary(opposite, source)))
{
temporary = true;
}
return new CausedFocusEvent(source, fe.getID(), temporary, opposite,
CausedFocusEvent.Cause.NATIVE_SYSTEM);
}
}
static FocusEvent retargetUnexpectedFocusEvent(FocusEvent fe) {
synchronized (heavyweightRequests) {
// Any other case represents a failure condition which we did
// not expect. We need to clearFocusRequestList() and patch up
// the event as best as possible.
if (removeFirstRequest()) {
return (FocusEvent)retargetFocusEvent(fe);
}
Component source = fe.getComponent();
Component opposite = fe.getOppositeComponent();
boolean temporary = false;
if (fe.getID() == FocusEvent.FOCUS_LOST &&
(opposite == null || isTemporary(opposite, source)))
{
temporary = true;
}
return new CausedFocusEvent(source, fe.getID(), temporary, opposite,
CausedFocusEvent.Cause.NATIVE_SYSTEM);
}
}
public JComponent createGroupComponent(GPOptionGroup group) {
GPOption<?>[] options = group.getOptions();
final JComponent optionsPanel = createGroupComponent(group, options);
if (group.isTitled()) {
UIUtil.createTitle(optionsPanel, myi18n.getOptionGroupLabel(group));
}
JPanel result = new JPanel(new BorderLayout());
result.add(optionsPanel, BorderLayout.NORTH);
result.addFocusListener(new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
optionsPanel.requestFocus();
}
});
return result;
}
public void focusGained(FocusEvent fe) {
Component c = fe.getOppositeComponent();
/*
//handy for debugging
System.out.println("Focus gained to " + (fe.getComponent().getName() == null ? fe.getComponent().getClass().getName() : fe.getComponent().getName()) + " temporary: " + fe.isTemporary()
+ " from " + (fe.getOppositeComponent() == null ? "null" :
(fe.getOppositeComponent().getName() == null ? fe.getOppositeComponent().getClass().getName() : fe.getOppositeComponent().getName()))
);
*/
PropUtils.log(BaseTable.class, fe);
if (!isKnownComponent(c)) {
fireChange();
}
if (!inEditRequest() && !inEditorRemoveRequest() && (fe.getComponent() == this)) {
// System.out.println("Painting due to focus gain " + fe.getComponent());
// repaint(0,0,getWidth(),getHeight());
paintSelectionRow();
}
}
/**
* JDayChooser is the FocusListener for all day buttons. (Added by Thomas
* Schaefer)
*
* @param e
* the FocusEvent
*/
/*
* Code below commented out by Mark Brown on 24 Aug 2004. This code breaks
* the JDateChooser code by triggering the actionPerformed method on the
* next day button. This causes the date chosen to always be incremented by
* one day.
*/
public void focusGained(FocusEvent e) {
// JButton button = (JButton) e.getSource();
// String buttonText = button.getText();
//
// if ((buttonText != null) && !buttonText.equals("") &&
// !e.isTemporary()) {
// actionPerformed(new ActionEvent(e.getSource(), 0, null));
// }
}
public void processFocusEvent(FocusEvent e) {
//TODO: CUBA 7 Rework TableFocusManager for Java 9
//https://github.com/cuba-platform/cuba/issues/893
// if (e.getID() == FocusEvent.FOCUS_GAINED) {
// if (e instanceof CausedFocusEvent) {
// if (((CausedFocusEvent) e).getCause() == CausedFocusEvent.Cause.TRAVERSAL_FORWARD) {
// if (impl.getModel().getRowCount() > 0) {
// // if focus from cell editor
// if (e.getSource() == impl && impl.getSelectedRow() >= 0) {
// int selectedColumn = impl.getSelectedColumn();
// focusTo(impl.getSelectedRow(), selectedColumn >= 0 ? selectedColumn : 0);
// } else
// moveToStart(0, 0);
// } else
// impl.transferFocus();
//
// } else if (((CausedFocusEvent) e).getCause() == CausedFocusEvent.Cause.TRAVERSAL_BACKWARD) {
// if (impl.getModel().getRowCount() > 0) {
// moveToEnd(impl.getRowCount() - 1, impl.getColumnCount() - 1);
// } else
// impl.transferFocusBackward();
// }
// }
// }
}
private void addSnapToGridField(JToolBar buttonBar, Insets margin) {
gridSpacing = new JTextField("1000000 m") {
@Override
protected void processFocusEvent(FocusEvent fe) {
if (fe.getID() == FocusEvent.FOCUS_LOST) {
GUIFrame.this.setSnapGridSpacing(this.getText().trim());
}
else if (fe.getID() == FocusEvent.FOCUS_GAINED) {
gridSpacing.selectAll();
}
super.processFocusEvent( fe );
}
};
gridSpacing.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent evt) {
GUIFrame.this.setSnapGridSpacing(gridSpacing.getText().trim());
controlStartResume.requestFocusInWindow();
}
});
gridSpacing.setMaximumSize(gridSpacing.getPreferredSize());
int hght = snapToGrid.getPreferredSize().height;
gridSpacing.setPreferredSize(new Dimension(gridSpacing.getPreferredSize().width, hght));
gridSpacing.setHorizontalAlignment(JTextField.RIGHT);
gridSpacing.setToolTipText(formatToolTip("Snap Grid Spacing",
"Distance between adjacent grid points, e.g. 0.1 m, 10 km, etc."));
gridSpacing.setEnabled(snapToGrid.isSelected());
buttonBar.add(gridSpacing);
}
@Override
public void installListeners() {
this.focusListener = new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
SwingUtilities.invokeLater(() -> {
if (WidgetUtilities.hasTextFocusSelectAllProperty(jcomp)
&& jcomp.isEditable())
jcomp.selectAll();
});
}
};
this.jcomp.addFocusListener(this.focusListener);
}
/**
* Restoring native behavior. We should sets the selection range to zero,
* when component lost its focus.
*
* @param e the focus event
*/
@Override
void handleJavaFocusEvent(final FocusEvent e) {
if (e.getID() == FocusEvent.FOCUS_LOST) {
// In order to de-select the selection
setCaretPosition(0);
}
super.handleJavaFocusEvent(e);
}
public void focusGained(final FocusEvent event) {
Object source = event.getSource();
if (source instanceof JFormattedTextField) {
this.text = (JFormattedTextField) source;
SwingUtilities.invokeLater(() -> {
if (this.text != null) {
this.text.selectAll();
}
});
}
}
/**
* Revalidates minimum/maximum range.
*
* @param event the event.
*/
@Override
public void focusLost(FocusEvent event) {
if (event.getSource() == this.minimumRangeValue) {
validateMinimum();
}
else if (event.getSource() == this.maximumRangeValue) {
validateMaximum();
}
}
public
void
focusLost(FocusEvent event)
{
JTextField field = (JTextField)event.getSource();
field.setText(UI_DATE_FORMAT.format(getDate(field)));
}
public void focusGained(FocusEvent evt) {
if(evt.getSource() == urlPatternPanel.depthComboBox &&
! urlPatternPanel.useSubfolderRadioButton.isSelected())
{
urlPatternPanel.useSubfolderRadioButton.setSelected(true);
}
}
@Override
protected void onWizardStarting(@NotNull ModelWizard.Facade wizard) {
FlutterProjectModel model = getModel();
myKotlinCheckBox.setText(FlutterBundle.message("module.wizard.language.name_kotlin"));
mySwiftCheckBox.setText(FlutterBundle.message("module.wizard.language.name_swift"));
myBindings.bindTwoWay(new SelectedProperty(myUseAndroidxCheckBox), getModel().useAndroidX());
TextProperty packageNameText = new TextProperty(myPackageName);
Expression<String> computedPackageName = new DomainToPackageExpression(model.companyDomain(), model.projectName()) {
@Override
public String get() {
return super.get().replaceAll("_", "");
}
};
BoolProperty isPackageSynced = new BoolValueProperty(true);
myBindings.bind(packageNameText, computedPackageName, isPackageSynced);
myBindings.bind(model.packageName(), packageNameText);
myListeners.listen(packageNameText, value -> isPackageSynced.set(value.equals(computedPackageName.get())));
// The wizard changed substantially in 3.5. Something causes this page to not get properly validated
// after it is added to the Swing tree. Here we check that we have to validate the tree, then do so.
// It only needs to be done once, so we remove the listener to prevent possible flicker.
focusListener = new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
super.focusGained(e);
Container parent = myRoot;
while (parent != null && !(parent instanceof JBLayeredPane)) {
parent = parent.getParent();
}
if (parent != null) {
parent.validate();
}
myPackageName.removeFocusListener(focusListener);
}
};
myPackageName.addFocusListener(focusListener);
}
public UrlComboBox() {
setToolTipText("URL");
setEditable(true);
final JTextField editorComponent = (JTextField) getEditor().getEditorComponent();
editorComponent.addFocusListener(new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
editorComponent.selectAll();
}
});
AutoCompletion ac = new AutoCompletion(this);
ac.setStrict(false);
ac.setStrictCompletion(false);
}
@Override
public void focusLost(FocusEvent focusEvent) {
String controllerName = getControllerName();
if (controllerName == null) {
return;
}
form.getControllerNameBox().getChildComponent().getEditor().setItem(controllerName);
}
@Override
public void focusGained(FocusEvent e) {
if (e.getSource() instanceof JTextField) {
JTextField tf = (JTextField) e.getSource();
if (!tf.getText().isEmpty()) {
tf.setText("");
tf.setForeground(new Color(50, 50, 50));
}
}
}
@Override
public void focusGained(FocusEvent e) {
if(panel.changedFromTextField.getText().equals("")) { // NOI18N
String lastChangeFrom = BugzillaConfig.getInstance().getLastChangeFrom();
panel.changedFromTextField.setText(lastChangeFrom);
panel.changedFromTextField.setSelectionStart(0);
panel.changedFromTextField.setSelectionEnd(lastChangeFrom.length());
}
}
private MainPanel() {
super(new GridLayout(2, 1));
JTextField field = new JTextField("aaaaaaaaa");
field.addFocusListener(new FocusAdapter() {
@Override public void focusGained(FocusEvent e) {
((JTextComponent) e.getComponent()).selectAll();
}
});
add(makeTitledPanel("focusGained: selectAll", field));
add(makeTitledPanel("default", new JTextField("bbbbbbbbb")));
setBorder(BorderFactory.createEmptyBorder(10, 5, 10, 5));
setPreferredSize(new Dimension(320, 240));
}
@Override
protected void processFocusEvent(FocusEvent event) {
super.processFocusEvent(event);
if (event.getID() == FocusEvent.FOCUS_GAINED) {
selectAll();
}
}
private void handleSpinnerMoveNumberEditorFocusGained(FocusEvent e) {
Component component = e.getComponent();
if (component instanceof JTextComponent) {
final JTextComponent textComponent = (JTextComponent) component;
Lizzie.miscExecutor.schedule(() -> SwingUtilities.invokeLater(textComponent::selectAll), 250, TimeUnit.MILLISECONDS);
}
}
/** Updates state when the window loses focus */
public void focusLost(FocusEvent e) {
for (int i = 0; i < keys.length; i++)
keys[i] = false;
for (int i = 0; i < mouseButtons.length; i++)
mouseButtons[i] = false;
}
/** Delegates to the original listener.
*/
public void focusGained(FocusEvent ev) {
FocusListener l = (FocusListener) super.get(ev);
if (l != null) {
l.focusGained(ev);
}
}
@Override
protected void processFocusEvent(FocusEvent e) {
super.processFocusEvent(e);
floatingLabel.update();
line.update();
repaint();
}
@Override
protected void processFocusEvent(FocusEvent fe) {
super.processFocusEvent(fe);
if (fe.getID() == FocusEvent.FOCUS_LOST) {
stopTimer();
}
}
@SuppressWarnings("deprecation")
public static boolean deliverFocus(Component lightweightChild,
Component target,
boolean temporary,
boolean focusedWindowChangeAllowed,
long time,
CausedFocusEvent.Cause cause,
Component currentFocusOwner) // provided by the descendant peers
{
if (lightweightChild == null) {
lightweightChild = target;
}
Component currentOwner = currentFocusOwner;
if (currentOwner != null && currentOwner.getPeer() == null) {
currentOwner = null;
}
if (currentOwner != null) {
FocusEvent fl = new CausedFocusEvent(currentOwner, FocusEvent.FOCUS_LOST,
false, lightweightChild, cause);
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
focusLog.finer("Posting focus event: " + fl);
}
SunToolkit.postEvent(SunToolkit.targetToAppContext(currentOwner), fl);
}
FocusEvent fg = new CausedFocusEvent(lightweightChild, FocusEvent.FOCUS_GAINED,
false, currentOwner, cause);
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
focusLog.finer("Posting focus event: " + fg);
}
SunToolkit.postEvent(SunToolkit.targetToAppContext(lightweightChild), fg);
return true;
}
public void init() {
robot = Util.createRobot();
kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();
Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
public void eventDispatched(AWTEvent event) {
System.out.println("--> " + event);
}
}, FocusEvent.FOCUS_EVENT_MASK | WindowEvent.WINDOW_FOCUS_EVENT_MASK);
}
@Override
public void clearGlobalFocusOwner(Window activeWindow) {
if (activeWindow != null) {
Component focusOwner = activeWindow.getFocusOwner();
if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
focusLog.fine("Clearing global focus owner " + focusOwner);
}
if (focusOwner != null) {
FocusEvent fl = new CausedFocusEvent(focusOwner, FocusEvent.FOCUS_LOST, false, null,
CausedFocusEvent.Cause.CLEAR_GLOBAL_FOCUS_OWNER);
SunToolkit.postPriorityEvent(fl);
}
}
}
/**
* Called when component receives focus
*/
public void focusGained(FocusEvent e) {
if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
focusLog.fine("{0}", e);
}
bHasFocus = true;
}