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Exception when re-opening PrefenceDialog ? [message #435025]

Tue, 09 August 2005 07:29

Eclipse User

Originally posted by: eclipse.newsgroups.anegma.com

Hello,

working on my RCP application I get a serious problem with the
preference dialog. Once I start it (via an action), everything
is fine. But if I close the dialog and try again to open it
I get an exception:

org.eclipse.jface.util.Assert$AssertionFailedException: null argument;
at org.eclipse.jface.util.Assert.isNotNull(Assert.java:149)
at org.eclipse.jface.util.Assert.isNotNull(Assert.java:125)

This is the source with that I open the dialog:

public void run() {
if (parentWindow != null) {
PreferenceManager pm =
PlatformUI.getWorkbench().getPreferenceManager();

IPreferenceNode[] preferencePages = getPreferencePages();
for (int i = 0; i < preferencePages.length; i++) {
prefManager.addToRoot(preferencePages[i]);
}
if (prefManager != null) {
PreferenceDialog prefDialog =
new PreferenceDialog(parentWindow.getShell(), pm);

prefDialog.setPreferenceStore(
PlatformUI.getPreferenceStore());
prefDialog.create();
prefDialog.open();
}
for (int i = 0; i < preferencePages.length; i++) {
preferencePages[i].disposeResources();
}
}
}

If I remove the PreferenceManager from the Dialog I can open
the Dialog as often I want.

Does anyone knwo what I'm doing wrong here ??

- Gunnar Pietz

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