public boolean isAtEnd() {
if (spine == null) {
return false;
}
return spine.getPosition() >= spine.size() - 1 && strategy.isAtEnd();
}
/**
* Returns if we're at the start of the book, i.e. displaying the title page.
*
* @return
*/
public boolean isAtStart() {
if (spine == null) {
return true;
}
return spine.getPosition() == 0 && strategy.isAtStart();
}