clear method
void
clear()
Clear all state
Implementation
void clear() {
_document = null;
_pageImages.clear();
_alreadyAdded.clear();
_isLoading = false;
_showLastPage = true;
_currentPage = 0;
_currentPageComplete = 0;
_animationEnd = true;
_animationComplete = false;
_isAnimationReady = true;
_isSwipeInProgress = false;
_isSwipingLeft = true;
_isZoomed = false;
_isMobileZoomed = false;
_isMobileZoomAnimation = false;
_errorMessage = null;
notifyListeners();
}