Bug 29163 SafeRunnable needs to be accessible in JFace
We need to be able to access the SafeRunnable in JFace in order that some error protection can be added to preferences and properties dialogs.
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/wizard/WizardDialog.java
*/
private Composite createPageContainer(Composite parent) {
	Composite result= new Composite(parent, SWT.NULL);
	result.setLayout(pageContainerLayout);
	return result;
}
/**
 * Allow the wizard's pages to pre-create their page controls.
 * This allows the wizard dialog to open to the correct size.
 */
private void createPageControls() {
	
	
	wizard.createPageControls(pageContainer);
	
	IWizardPage[] pages = wizard.getPages();
	for (int i = 0; i < pages.length; i++) {
		IWizardPage page = (IWizardPage)pages[i];
		if (page.getControl() != null) 
			page.getControl().setVisible(false);
	}
}
/**
 * Creates the Previous and Next buttons for this wizard dialog.
 * Creates standard (<code>SWT.PUSH</code>) buttons and registers for their
 * selection events. Note that the number of columns in the button bar composite
 * is incremented. These buttons are created specially to prevent any space 
 * between them.
 *
 * @param parent the parent button bar