/**
* Get the first page link to render. Adjust the first page link based on the current
* PageableListView page displayed.
*/
private void setStartIndex() {
// Which startIndex are we currently using
long firstListItem = startIndex;
// How many page links shall be displayed
int viewSize = (int) Math.min(getViewSize(), pageable.getPageCount());
long margin = getMargin();
// What is the PageableListView's page index to be displayed
long currentPage = pageable.getCurrentPage();
// Make sure the current page link index is within the current
// window taking the left and right margin into account
if (currentPage < (firstListItem + margin)) {
firstListItem = currentPage - margin;
} else if ((currentPage >= (firstListItem + viewSize - margin))) {
firstListItem = (currentPage + margin + 1) - viewSize;
}
// Make sure the first index is >= 0 and the last index is <=
// than the last page link index.
if ((firstListItem + viewSize) >= pageable.getPageCount()) {
firstListItem = pageable.getPageCount() - viewSize;
}
if (firstListItem < 0) {
firstListItem = 0;
}
if ((viewSize != getIterations()) || (startIndex != firstListItem)) {
modelChanging();
// Tell the ListView what the new start index shall be
addStateChange();
startIndex = firstListItem;
setIterations((int) Math.min(viewSize, pageable.getPageCount()));
modelChanged();
// force all children to be re-rendered
removeAll();
}
}
@Override
protected void onConfigure() {
super.onConfigure();
setDefaultModel(new Model<Integer>((int) Math.max(Integer.MAX_VALUE, pageable.getPageCount())));
// PagingNavigation itself (as well as the PageableListView)
// may have pages.
// The index of the first page link depends on the PageableListView's
// page currently printed.
setStartIndex();
}
