Bug 54737 Libraries dialog doesn't remember status of items in library tree
Preferences > Java > Build Path > User Libraries: The dialog does not seem to correctly remember the status of the items in the "Defined user libraries" tree. When I leave the dialog I close (un-cascade) all items. When I open the dialog again, most of the items are open (cascaded) again. This is disturbing because I cannot overview the items. It's like opening the Windows explorer with not only the drives shown but all folders being open.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/dialogfields/TreeListDialogField.java
}
		}
	}
	
	
	protected boolean containsAttributes(List selected) {
		for (int i= 0; i < selected.size(); i++) {
			if (!fElements.contains(selected.get(i))) {
				return true;
			}
		}
		return false;
	}
	
	protected boolean getManagedButtonState(ISelection sel, int index) {
		List selected= getSelectedElements();
		boolean hasAttributes= containsAttributes(selected);
		if (index == fRemoveButtonIndex) {
			return !selected.isEmpty() && !hasAttributes;
		} else if (index == fUpButtonIndex) {
			return !sel.isEmpty() && !hasAttributes && canMoveUp(selected);
		} else if (index == fDownButtonIndex) {
			return !sel.isEmpty() && !hasAttributes && canMoveDown(selected);
		}
		return true;
	}
	/*
	* @see DialogField#updateEnableState
	*/
	protected void updateEnableState() {