public void setActivePage ( DialogPage activePage ) { DialogPage oldPage = this . activePage ; Assert . isTrue ( activePage == null || pages . contains ( activePage ) ) ; if ( oldPage == activePage ) { return ; } this . activePage = activePage ; updateMessage ( ) ; if ( oldPage != null ) { updatePageLabels ( oldPage ) ; } if ( activePage != null ) { updatePageLabels ( activePage ) ; } }
Sets the active page of this CompositeDialogPage .