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| package org.divxdede.filemanager.ui.busy;
import java.awt.Color;
import java.awt.Component;
import java.awt.Point;
import java.awt.Window;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
import org.jdesktop.swingx.JXBusyLabel;
import org.jdesktop.swingx.JXPanel;
/**
* Utilitaire pour rendre "occupé" un composant swing.
* <p>
* Les méthodes <strong>create</strong> modifie le rendu d'un composant afin
* d'indiquer à l'utilisateur que ce dernier est occupé.
* <p>
* Un <code>BusyHandler</code> est retourné afin de permettre à l'appelant
* d'indiquer que la tâche occupant le composant est terminée.
*
* @author André Sébastien
*/
public abstract class BusyFactory {
/** Busy a specified component
* @param comp Component to create
* @return BusyHandler Handler for complete the task and stop the create state
*/
public static BusyHandler create( JComponent comp ) {
return create( comp , Color.GRAY );
}
/** Busy a specified component
* @param comp Component to create
* @param shadowColor Shadowing color used over the component while it is create
* @return BusyHandler Handler for complete the task and stop the create state
*/
public static BusyHandler create( JComponent comp , Color shadowColor ) {
return new BusyHandlerImpl(comp, shadowColor );
}
/** Create a component used as a glasspane
*/
private static JComponent createGlassPane() {
JXPanel panel = new JXPanel();
panel.setLayout(null);
panel.setOpaque(false);
panel.setName("busy-glasspane");
return panel;
}
/** Duplicate a layout component (location & size) on another component.
*/
private static void layout( JComponent source , JComponent dest ) {
Point point = source.getLocation();
Point rootPoint = SwingUtilities.convertPoint( source.getParent(), point , dest.getParent() );
dest.setLocation(rootPoint);
dest.setSize( source.getSize() );
}
/** BusyHandler implementation
*/
static class BusyHandlerImpl implements BusyHandler {
private JComponent comp = null;
private Color shadowColor = null;
private JComponent glassPane = null;
private Component[] comps = null;
public BusyHandlerImpl( JComponent comp , Color shadowColor ) {
this.comp = comp;
this.shadowColor = shadowColor;
}
public synchronized void busy() {
if( this.glassPane != null ) return;
synchronized( comp.getTreeLock() )
{
Window w = SwingUtilities.getWindowAncestor(comp);
if( w instanceof JFrame ) {
JFrame frame = (JFrame)w;
/** Get a glasspane component
*/
this.glassPane = (JComponent)frame.getGlassPane();
if( this.glassPane.getName() == null || !glassPane.getName().equals("busy-glasspane") ) {
this.glassPane = createGlassPane();
frame.setGlassPane( this.glassPane );
}
synchronized( this.glassPane.getTreeLock() )
{
/** Create a Busy Label
*/
JXBusyLabel label = new JXBusyLabel();
label.setHorizontalAlignment( label.CENTER );
/** Create a white-shadow
*/
JLabel shadow = null;
if( shadowColor != null ) {
shadow = new JLabel();
shadow.setBackground( new Color(shadowColor.getRed(),shadowColor.getGreen(),shadowColor.getBlue(),100) );
shadow.setOpaque(true);
}
/** Add the Busy label to the glasspane
*/
if( shadow != null ) this.glassPane.add( shadow );
this.glassPane.add( label );
if( shadow != null ) layout( comp , shadow );
layout( comp , label );
if( shadow != null ) {
this.comps = new Component[]{ shadow , label };
}
else
this.comps = new Component[]{ label };
/** Show the GlassPane if it's not the case
*/
this.glassPane.setVisible(true);
/** Start animation
*/
label.setBusy(true);
}
}
else {
throw new IllegalStateException("Component don't have a JFrame ancestor");
}
}
}
public synchronized void done() {
if( comps == null || glassPane == null ) return;
if( ! SwingUtilities.isEventDispatchThread() ) {
SwingUtilities.invokeLater( new Runnable() {
public void run() {
done();
}
} );
return;
}
synchronized( glassPane.getTreeLock() ) {
for(Component c : comps) {
if( c instanceof JXBusyLabel ) {
((JXBusyLabel)c).setBusy(false);
}
glassPane.remove(c);
}
}
glassPane = null;
comps = null;
}
}
} |
[SwingX] Utilitaire pour afficher un état "Occupé"
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