Re: Matisse is throwing exception until I restart NetBeans

[Please post reports like this rather to nbusers mailing list... Thanks]

The exception you attached is probably caused by a bug in the GUI builder 
(would be worth reporting in IssueZilla), however it is caused but another 
exception - DataPicker component fails on instantiation (thus the layout 
loading fails).

When you compile the other form and reopen the WizytyForm form, a new 
classloader is used to load the classes - so new version of DataPicker class 
is loaded, but it probably interacts with the old version of the 
BasicDatePickerUI. If you restart, everything seems ok - when the class is 
loaded first time.

Would be good to investigate why this happens... especially the 
CalendarPane.updateUI method - how it gets the UI delegate.

   - Tomas


java.lang.ClassCastException: com.michaelbaranov.microba.calendar.DatePicker
         at 
com.michaelbaranov.microba.calendar.ui.basic.BasicDatePickerUI.installUI(BasicDatePickerUI.java:63)
         at javax.swing.JComponent.setUI(JComponent.java:652)
         at 
com.michaelbaranov.microba.calendar.CalendarPane.updateUI(CalendarPane.java:138)
         at 
com.michaelbaranov.microba.calendar.CalendarPane.<init>(CalendarPane.java:198)
         at 
com.michaelbaranov.microba.calendar.DatePicker.<init>(DatePicker.java:74)
         at 
com.michaelbaranov.microba.calendar.DatePicker.<init>(DatePicker.java:43)
         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
         at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
         at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
         at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
         at java.lang.Class.newInstance0(Class.java:350)
         at java.lang.Class.newInstance(Class.java:303)
         at 
org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:136)
...



Witold Szczerba wrote:
> Hello there,
> I was writing about this few days ago, but now I know the problem is
> my particular form I've made using NetBeans. Here is my problem
> description:
> 
> "Problem with my own components in Palette (Warning: Form Loaded With 
> Errors)"
> http://www.netbeans.org/servlets/ReadMsg?list=nbusers&msgNo=78962
> 
> Now I know that this is happening only with one of my form (tried on
> NB5.5 final on WinXP and Linux). I though it might be interesting
> evidence, so I am attaching the exception and my form.
> 
> Here is how to get the IOException:
> 1) download this project:
> http://josh.neostrada.pl/MatisseException.zip
> 2) Open and close WizytyForm (just to make Matisse show it).
> 3) Open SimpleCrudComponent and add for.ex. jTextField to it, then
> save and compile.
> 4) Now when you open WizytyForm again, you will get error and
> exception. Do not change anything, just close whole NetBeans and open
> it again.
> 5) Now - WizytyForm has no problems, embedded SimpleCrudComponent
> looks fine, no trouble at all... until you change SimpleCrudComponent
> again :/
> 
> I tried this on my home PC, at Work (winXP) and at the end I could
> reproduce this on Linux (XFCE @ X.org 6.8).
> 
> I know I could probably create my WizytyForm again from scratch, but
> it would not solve the cause.
> 
> 
> ------------------------------------------------------------------------
> 
> Annotation: Error in loading layout:
> [JPanel]->jPanel2->[layout]
> Initialization of layout support failed.
> Layout information for this container cannot be loaded.
> java.io.IOException: Undefined component referenced in layout: null
> 	at org.netbeans.modules.form.layoutdesign.LayoutPersistenceManager.correctMissingName(LayoutPersistenceManager.java:589)
> 	at org.netbeans.modules.form.layoutdesign.LayoutPersistenceManager.loadModel(LayoutPersistenceManager.java:322)
> 	at org.netbeans.modules.form.layoutdesign.LayoutModel.loadModel(LayoutModel.java:1022)
> 	at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:763)
> 	at org.netbeans.modules.form.GandalfPersistenceManager.restoreComponent(GandalfPersistenceManager.java:605)
> 	at org.netbeans.modules.form.GandalfPersistenceManager.loadComponent(GandalfPersistenceManager.java:733)
> 	at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:426)
> 	at org.netbeans.modules.form.GandalfPersistenceManager.loadForm(GandalfPersistenceManager.java:206)
> 	at org.netbeans.modules.form.FormEditor$2.run(FormEditor.java:222)
> 	at org.netbeans.modules.form.FormLAF$1.run(FormLAF.java:64)
> 	at org.openide.util.Mutex.doEventAccess(Mutex.java:1178)
> 	at org.openide.util.Mutex.readAccess(Mutex.java:259)
> 	at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:49)
> 	at org.netbeans.modules.form.FormEditor.loadFormData(FormEditor.java:220)
> 	at org.netbeans.modules.form.FormEditor.loadFormDesigner(FormEditor.java:143)
> 	at org.netbeans.modules.form.FormDesigner.componentShowing(FormDesigner.java:1491)
> 	at org.netbeans.core.multiview.MultiViewPeer.peerComponentShowing(MultiViewPeer.java:177)
> 	at org.netbeans.core.multiview.MultiViewCloneableTopComponent.componentShowing(MultiViewCloneableTopComponent.java:113)
> 	at org.openide.windows.WindowManager.componentShowing(WindowManager.java:313)
> 	at org.netbeans.core.windows.WindowManagerImpl.componentShowing(WindowManagerImpl.java:950)
> 	at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:150)
> 	at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:244)
> 	at org.netbeans.core.windows.ViewRequestor.processRequest(ViewRequestor.java:220)
> 	at org.netbeans.core.windows.ViewRequestor.postRequest(ViewRequestor.java:158)
> 	at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:97)
> 	at org.netbeans.core.windows.Central.addModeOpenedTopComponent(Central.java:584)
> 	at org.netbeans.core.windows.ModeImpl.addOpenedTopComponent(ModeImpl.java:255)
> 	at org.netbeans.core.windows.WindowManagerImpl.topComponentOpen(WindowManagerImpl.java:998)
> 	at org.openide.windows.TopComponent.open(TopComponent.java:338)
> 	at org.openide.windows.TopComponent.open(TopComponent.java:330)
> 	at org.openide.windows.CloneableOpenSupport.openCloneableTopComponent(CloneableOpenSupport.java:177)
> 	at org.netbeans.modules.form.FormEditorSupport.openFormEditor(FormEditorSupport.java:113)
> 	at org.netbeans.modules.form.FormDataNode$1.actionPerformed(FormDataNode.java:53)
> 	at org.openide.explorer.view.TreeView$PopupSupport.mouseClicked(TreeView.java:1389)
> 	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:212)
> 	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:211)
> 	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:211)
> 	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:211)
> 	at java.awt.Component.processMouseEvent(Component.java:5491)
> 	at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
> 	at java.awt.Component.processEvent(Component.java:5253)
> 	at java.awt.Container.processEvent(Container.java:1966)
> 	at java.awt.Component.dispatchEventImpl(Component.java:3955)
> 	at java.awt.Container.dispatchEventImpl(Container.java:2024)
> 	at java.awt.Component.dispatchEvent(Component.java:3803)
> 	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
> 	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3901)
> 	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
> 	at java.awt.Container.dispatchEventImpl(Container.java:2010)
> 	at java.awt.Window.dispatchEventImpl(Window.java:1778)
> 	at java.awt.Component.dispatchEvent(Component.java:3803)
> [catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
> 	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
> 	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
> 	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
> 	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
> 	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)