Bug 168888 [Wizards] PageTransition classes may need rename/reorg
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/WizardDialog.java
if (shell != null){
	    		
	    		Point currentSize = shell.getSize();
	    		Point newSize = shell.computeSize(SWT.DEFAULT, SWT.DEFAULT);
	    		 
	    		
	    		int height = Math.max(currentSize.y, newSize.y);
	    		setShellSize(currentSize.x, height);
	    		progressMonitorPart.getParent().layout(true);
	    	}
        }
        
		
		firePageChanged(new PageChangedEvent(this, getCurrentPage()));
    }
    /* (non-Javadoc)
     * Method declared on IWizardContainer.
     */
    public void updateButtons() {
        boolean canFlipToNextPage = false;
        boolean canFinish = wizard.canFinish();
        if (backButton != null) {
			backButton.setEnabled(currentPage.getPreviousPage() != null);
		}
        if (nextButton != null) {
            canFlipToNextPage = currentPage.canFlipToNextPage();
            nextButton.setEnabled(canFlipToNextPage);
        }
        finishButton.setEnabled(canFinish);