@Override
	protected void nextPressed() {
		IWizardPage currentActivePage = getCurrentPage();
		ASSERTPageIsDefaultWizardPage(currentActivePage);
	
		/* notify current page if it wants to do any validation on input */
		if( !((DefaultWizardPage)currentActivePage).nextPressed() ) return;
	
		/* delegate nextPressed processing to super */
		super.nextPressed();
}

protected boolean nextPressed() { 
		try {
			formCompositeBuilder.save(false);
			return true;
		} catch (Exception e) {
			eclipseContext.get(IEventBroker.class).send("EXCEPTION_SHOW_TO_USER", e);
		}
		return false;
	}

    /** @override */
    public org.eclipse.jface.wizard.IWizardPage getNextPage() {
        //kind of hack to detect without overriding WizardDialog#nextPressed()
        boolean isNextPressed = "nextPressed".equalsIgnoreCase(Thread.currentThread().getStackTrace()[2].getMethodName());
        if (isNextPressed) {
            boolean validatedNextPress = this.nextPressed();
            if (!validatedNextPress) {
                return this;
            }
        }
        return super.getNextPage();
    }

    /**
     * @see WizardDialog#nextPressed()
     * @see WizardPage#getNextPage()
     */
    protected boolean nextPressed() {
        boolean validatedNextPressed = true;
        try {
            //your checking here: remote connection, local directory/file creation, showing dialogs, etc... 
        } catch (Exception ex) {
            System.out.println("Error validation when pressing Next: " + ex);
        }
        return validatedNextPressed;
    }