Bug 305200 [EditorMgmt] FileEditorMappingContentProvider could just be replaced by ArrayContentProvider
This class doesn't seem to be very useful.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/dialogs/WizardExportPage.java
while (tokenizer.hasMoreTokens()) {
            String currentExtension = tokenizer.nextToken().trim();
            if (!currentExtension.equals("")) { 
				result.add(currentExtension);
			}
        }
        return result;
    }
    /**
     * The <code>WizardExportPage</code> implementation of this 
     * <code>Listener</code> method handles all events and enablements for controls
     * on this page. Subclasses may extend.
     */
    public void handleEvent(Event event) {
        Widget source = event.widget;
        if (source == exportAllTypesRadio || source == typesToExportField
                || source == resourceNameField) {
			resetSelectedResources();
		} else if (source == exportSpecifiedTypesRadio) {
            resetSelectedResources();
            typesToExportField.setFocus();
        } else if (source == resourceDetailsButton) {
			handleResourceDetailsButtonPressed();
		} else if (source == resourceBrowseButton) {
			handleResourceBrowseButtonPressed();
		} else if (source == typesToExportEditButton) {
			handleTypesEditButtonPressed();
		}
        setPageComplete(determinePageCompletion());
        updateWidgetEnablements();