Bug 92203 [Preferences] preferences package needs cleanup
org.eclipse.ui.preferences contains classes that should not be API by my estimation. These should be cleaned up before 3.1 ships.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/preferences/WizardPreferencesPage.java
protected abstract int getFileDialogStyle();
	
	/**
     * Handle all events and enablements for widgets in this page
     * 
     * @param e
     *            Event
     */
    public void handleEvent(Event e) {
        Widget source = e.widget;
        if (source == destinationBrowseButton)
            handleDestinationBrowseButtonPressed();
        updatePageCompletion();
    }
    /**
     * Hook method for saving widget values for restoration by the next instance
     * of this class.
     */
    protected void internalSaveWidgetValues() {
        
        IDialogSettings settings = getDialogSettings();
        if (settings != null) {
            String[] directoryNames = settings
                    .getArray(STORE_DESTINATION_NAMES_ID);
            if (directoryNames == null)
                directoryNames = new String[0];
            directoryNames = addToHistory(directoryNames, getDestinationValue());
            settings.put(STORE_DESTINATION_NAMES_ID, directoryNames);
			String current = getDestinationValue();
			if (current != null && !current.equals("")) {