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/Wizard.java
}
/* (non-Javadoc)
 * Method declared on IWizard.
 */
public boolean needsPreviousAndNextButtons() {
	return forcePreviousAndNextButtons || pages.size() > 1;
}
/* (non-Javadoc)
 * Method declared on IWizard.
 */
public boolean needsProgressMonitor() {
	return needsProgressMonitor;
}
/**
 * The <code>Wizard</code> implementation of this <code>IWizard</code>
 * method does nothing and returns <code>true</code>.
 * Subclasses should reimplement this method if they need to perform 
 * any special cancel processing for their wizard.
 */
public boolean performCancel() {
	return true;
}
/**
 * Subclasses must implement this <code>IWizard</code> method 
 * to perform any special finish processing for their wizard.
 */
public abstract boolean performFinish();
/* (non-Javadoc)
 * Method declared on IWizard.
 */