@Override
public ViewState process() {
if (model == null) {
return null;
}
final int pageCount = model.getPageCount();
if (viewIndex < 0 && viewIndex >= pageCount) {
if (LCTX.isDebugEnabled()) {
LCTX.d("Bad page index: " + viewIndex + ", page count: " + pageCount);
}
return viewState;
}
final Page page = model.getPageObject(viewIndex);
if (page == null) {
if (LCTX.isDebugEnabled()) {
LCTX.d("No page found for index: " + viewIndex);
}
return viewState;
}
model.setCurrentPageIndex(page.index);
final IView view = ctrl.getView();
final int scrollX = view.getScrollX();
final int scrollY = view.getScrollY();
final PointF p = calculateScroll(page, scrollX, scrollY);
final int left = Math.round(p.x);
final int top = Math.round(p.y);
if (isScrollRequired(left, top, scrollX, scrollY)) {
view.forceFinishScroll();
view.scrollTo(left, top);
viewState.update();
return viewState;
}
viewState.release();
return EventPool.newEventScrollTo(ctrl, viewIndex).process();
}
public void setCurrentPageByFirstVisible(final int firstVisiblePage) {
final Page page = getPageObject(firstVisiblePage);
if (page != null) {
setCurrentPageIndex(page.index);
}
}