public void lastPage() {
long pageSize = getPageSize();
long resultsCount = getResultsCount();
if (pageSize == 0 || resultsCount < 0) {
// do nothing
return;
}
if (resultsCount % pageSize == 0) {
setCurrentPageOffset(resultsCount - pageSize);
} else {
setCurrentPageOffset(resultsCount - resultsCount % pageSize);
}
pageChanged();
}
@Override
public void setCurrentPageIndex(long currentPageIndex) {
long pageSize = getPageSize();
long offset = currentPageIndex * pageSize;
setCurrentPageOffset(offset);
pageChanged();
}
public void setPageSize(long pageSize) {
long localPageSize = getPageSize();
if (localPageSize != pageSize) {
this.pageSize = pageSize;
// reset offset too
setCurrentPageOffset(0);
refresh();
}
}
public void nextPage() {
long pageSize = getPageSize();
if (pageSize == 0) {
// do nothing
return;
}
long offset = getCurrentPageOffset();
offset += pageSize;
setCurrentPageOffset(offset);
pageChanged();
}
public void firstPage() {
long pageSize = getPageSize();
if (pageSize == 0) {
// do nothing
return;
}
long offset = getCurrentPageOffset();
if (offset != 0) {
setCurrentPageOffset(0);
pageChanged();
}
}
public void previousPage() {
long pageSize = getPageSize();
if (pageSize == 0) {
// do nothing
return;
}
long offset = getCurrentPageOffset();
if (offset >= pageSize) {
offset -= pageSize;
setCurrentPageOffset(offset);
pageChanged();
}
}