Bug 168888 [Wizards] PageTransition classes may need rename/reorg
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/WizardDialog.java
return;
        }
        if (!isMovingToPreviousPage) {
			
            page.setPreviousPage(currentPage);
		} else {
			isMovingToPreviousPage = false;
		}
        
        if (getContents() == null) {
			updateForPage(page);
		} else {
            final IWizardPage finalPage = page;
            BusyIndicator.showWhile(getContents().getDisplay(), new Runnable() {
                public void run() {
                    updateForPage(finalPage);
                }
            });
        }
    }
    /**
     * Update the receiver for the new page.
     * @param page
     */
    private void updateForPage(IWizardPage page) {
        
        if (wizard != page.getWizard()) {
			setWizard(page.getWizard());
		}