/*
* @(#)BasicButtonListener.java 1.63 04/01/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.swing.plaf.basic;
import sun.swing.DefaultLookup;
import sun.swing.UIAction;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.ActionMapUIResource;
import javax.swing.plaf.ButtonUI;
import javax.swing.plaf.ComponentInputMapUIResource;
/**
* Button Listener
*
* @version 1.63 01/19/04
* @author Jeff Dinkins
* @author Arnaud Weber (keyboard UI support)
*/
public class BasicButtonListener implements MouseListener, MouseMotionListener,
FocusListener, ChangeListener, PropertyChangeListener
{
private long lastPressedTimestamp = -1;
private boolean shouldDiscardRelease = false;
/**
* Populates Buttons actions.
*/
static void loadActionMap(LazyActionMap map) {
map.put(new Actions(Actions.PRESS));
map.put(new Actions(Actions.RELEASE));
}
public BasicButtonListener(AbstractButton b) {
}
public void propertyChange(PropertyChangeEvent e) {
String prop = e.getPropertyName();
if(prop == AbstractButton.MNEMONIC_CHANGED_PROPERTY) {
updateMnemonicBinding((AbstractButton)e.getSource());
}
else if(prop == AbstractButton.CONTENT_AREA_FILLED_CHANGED_PROPERTY) {
checkOpacity((AbstractButton) e.getSource() );
}
else if(prop == AbstractButton.TEXT_CHANGED_PROPERTY ||
"font" == prop || "foreground" == prop) {
AbstractButton b = (AbstractButton) e.getSource();
BasicHTML.updateRenderer(b, b.getText());
}
}
protected void checkOpacity(AbstractButton b) {
b.setOpaque( b.isContentAreaFilled() );
}
/**
* Register default key actions: pressing space to "click" a
* button and registring the keyboard mnemonic (if any).
*/
public void installKeyboardActions(JComponent c) {
AbstractButton b = (AbstractButton)c;
// Update the mnemonic binding.
updateMnemonicBinding(b);
LazyActionMap.installLazyActionMap(c, BasicButtonListener.class,
"Button.actionMap");
InputMap km = getInputMap(JComponent.WHEN_FOCUSED, c);
SwingUtilities.replaceUIInputMap(c, JComponent.WHEN_FOCUSED, km);
}
/**
* Unregister's default key actions
*/
public void uninstallKeyboardActions(JComponent c) {
SwingUtilities.replaceUIInputMap(c, JComponent.
WHEN_IN_FOCUSED_WINDOW, null);
SwingUtilities.replaceUIInputMap(c, JComponent.WHEN_FOCUSED, null);
SwingUtilities.replaceUIActionMap(c, null);
}
/**
* Returns the InputMap for condition <code>condition</code>. Called as
* part of <code>installKeyboardActions</code>.
*/
InputMap getInputMap(int condition, JComponent c) {
if (condition == JComponent.WHEN_FOCUSED) {
BasicButtonUI ui = (BasicButtonUI)BasicLookAndFeel.getUIOfType(
((AbstractButton)c).getUI(), BasicButtonUI.class);
if (ui != null) {
return (InputMap)DefaultLookup.get(
c, ui, ui.getPropertyPrefix() + "focusInputMap");
}
}
return null;
}
/**
* Resets the binding for the mnemonic in the WHEN_IN_FOCUSED_WINDOW
* UI InputMap.
*/
void updateMnemonicBinding(AbstractButton b) {
int m = b.getMnemonic();
if(m != 0) {
InputMap map = SwingUtilities.getUIInputMap(
b, JComponent.WHEN_IN_FOCUSED_WINDOW);
if (map == null) {
map = new ComponentInputMapUIResource(b);
SwingUtilities.replaceUIInputMap(b,
JComponent.WHEN_IN_FOCUSED_WINDOW, map);
}
map.clear();
map.put(KeyStroke.getKeyStroke(m, InputEvent.ALT_MASK, false),
"pressed");
map.put(KeyStroke.getKeyStroke(m, InputEvent.ALT_MASK, true),
"released");
map.put(KeyStroke.getKeyStroke(m, 0, true), "released");
}
else {
InputMap map = SwingUtilities.getUIInputMap(b, JComponent.
WHEN_IN_FOCUSED_WINDOW);
if (map != null) {
map.clear();
}
}
}
public void stateChanged(ChangeEvent e) {
AbstractButton b = (AbstractButton) e.getSource();
b.repaint();
}
public void focusGained(FocusEvent e) {
AbstractButton b = (AbstractButton) e.getSource();
if (b instanceof JButton && ((JButton)b).isDefaultCapable()) {
JRootPane root = b.getRootPane();
if (root != null) {
BasicButtonUI ui = (BasicButtonUI)BasicLookAndFeel.getUIOfType(
((AbstractButton)b).getUI(), BasicButtonUI.class);
if (ui != null && DefaultLookup.getBoolean(b, ui,
ui.getPropertyPrefix() +
"defaultButtonFollowsFocus", true)) {
root.putClientProperty("temporaryDefaultButton", b);
root.setDefaultButton((JButton)b);
root.putClientProperty("temporaryDefaultButton", null);
}
}
}
b.repaint();
}
public void focusLost(FocusEvent e) {
AbstractButton b = (AbstractButton) e.getSource();
JRootPane root = b.getRootPane();
if (root != null) {
JButton initialDefault = (JButton)root.getClientProperty("initialDefaultButton");
if (b != initialDefault) {
BasicButtonUI ui = (BasicButtonUI)BasicLookAndFeel.getUIOfType(
((AbstractButton)b).getUI(), BasicButtonUI.class);
if (ui != null && DefaultLookup.getBoolean(b, ui,
ui.getPropertyPrefix() +
"defaultButtonFollowsFocus", true)) {
root.setDefaultButton(initialDefault);
}
}
}
b.getModel().setArmed(false);
b.repaint();
}
public void mouseMoved(MouseEvent e) {
}
public void mouseDragged(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isLeftMouseButton(e) ) {
AbstractButton b = (AbstractButton) e.getSource();
if(b.contains(e.getX(), e.getY())) {
long multiClickThreshhold = b.getMultiClickThreshhold();
long lastTime = lastPressedTimestamp;
long currentTime = lastPressedTimestamp = e.getWhen();
if (lastTime != -1 && currentTime - lastTime < multiClickThreshhold) {
shouldDiscardRelease = true;
return;
}
ButtonModel model = b.getModel();
if (!model.isEnabled()) {
// Disabled buttons ignore all input...
return;
}
if (!model.isArmed()) {
// button not armed, should be
model.setArmed(true);
}
model.setPressed(true);
if(!b.hasFocus() && b.isRequestFocusEnabled()) {
b.requestFocus();
}
}
}
};
public void mouseReleased(MouseEvent e) {
if (SwingUtilities.isLeftMouseButton(e)) {
// Support for multiClickThreshhold
if (shouldDiscardRelease) {
shouldDiscardRelease = false;
return;
}
AbstractButton b = (AbstractButton) e.getSource();
ButtonModel model = b.getModel();
model.setPressed(false);
model.setArmed(false);
}
};
public void mouseEntered(MouseEvent e) {
AbstractButton b = (AbstractButton) e.getSource();
ButtonModel model = b.getModel();
if (b.isRolloverEnabled() && !SwingUtilities.isLeftMouseButton(e)) {
model.setRollover(true);
}
if (model.isPressed())
model.setArmed(true);
};
public void mouseExited(MouseEvent e) {
AbstractButton b = (AbstractButton) e.getSource();
ButtonModel model = b.getModel();
if(b.isRolloverEnabled()) {
model.setRollover(false);
}
model.setArmed(false);
};
/**
* Actions for Buttons. Two type of action are supported:
* pressed: Moves the button to a pressed state
* released: Disarms the button.
*/
private static class Actions extends UIAction {
private static final String PRESS = "pressed";
private static final String RELEASE = "released";
Actions(String name) {
super(name);
}
public void actionPerformed(ActionEvent e) {
AbstractButton b = (AbstractButton)e.getSource();
String key = getName();
if (key == PRESS) {
ButtonModel model = b.getModel();
model.setArmed(true);
model.setPressed(true);
if(!b.hasFocus()) {
b.requestFocus();
}
}
else if (key == RELEASE) {
ButtonModel model = b.getModel();
model.setPressed(false);
model.setArmed(false);
}
}
public boolean isEnabled(Object sender) {
if(sender != null && (sender instanceof AbstractButton) &&
!((AbstractButton)sender).getModel().isEnabled()) {
return false;
} else {
return true;
}
}
}
}
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