Hello !
I hesitated to post on the forums “Bug” but I’m not sure that the exception is not caused by my code.
I have the following exception when dragging the station outside the frame :
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at bibliothek.gui.dock.FlapDockStation$FlapDropOperation.getCombination(FlapDockStation.java:2099)
at bibliothek.gui.dock.FlapDockStation$FlapDropOperation.getDisplayerCombination(FlapDockStation.java:2103)
at bibliothek.gui.dock.control.relocator.TabMerger.canMerge(TabMerger.java:47)
at bibliothek.gui.dock.control.relocator.MultiMerger.canMerge(MultiMerger.java:79)
at bibliothek.gui.dock.control.relocator.DefaultDockRelocator.canMerge(DefaultDockRelocator.java:270)
at bibliothek.gui.dock.control.relocator.DefaultDockRelocator.preparePut(DefaultDockRelocator.java:213)
at bibliothek.gui.dock.control.relocator.DefaultDockRelocator.selectNextTarget(DefaultDockRelocator.java:631)
at bibliothek.gui.dock.control.relocator.DefaultDockRelocator.dragMouseDragged(DefaultDockRelocator.java:583)
at bibliothek.gui.dock.control.relocator.DefaultDockRelocator.dragMouseDragged(DefaultDockRelocator.java:529)
at bibliothek.gui.dock.control.relocator.DefaultDockRelocator$MouseRepresentativeListener.mouseDragged(DefaultDockRelocator.java:1026)
at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:303)
at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:302)
at java.awt.Component.processMouseMotionEvent(Component.java:6337)
at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3285)
at java.awt.Component.processEvent(Component.java:6058)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4652)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4482)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4255)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4482)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
at java.awt.EventQueue.access$000(EventQueue.java:85)
at java.awt.EventQueue$1.run(EventQueue.java:603)
at java.awt.EventQueue$1.run(EventQueue.java:601)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:617)
at java.awt.EventQueue$2.run(EventQueue.java:615)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Here the code to reproduce the issue :
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import bibliothek.gui.dock.common.CControl;
import bibliothek.gui.dock.common.CGridArea;
import bibliothek.gui.dock.common.CLocation;
import bibliothek.gui.dock.util.DockUtilities;
public class Dock2 {
public static void addGridArea(String id, CControl control) {
CGridArea area = new CGridArea(control, id) {
@Override
public boolean isStackable() {
return true;
}
@Override
public boolean isExternalizable() {
return true;
}
};
area.setTitleShown(true);
area.setTitleText(id);
control.addDockable(area);
control.addStation(area, true);
CLocation location = CLocation.base().normal();
area.setLocation(location);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("Demo");
final CControl control = new CControl(frame);
frame.add(control.getContentArea(), BorderLayout.CENTER);
addGridArea("Grid1", control);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(20, 20, 400, 400);
frame.setVisible(true);
}
});
}
}
Thank.
