private void update() {
// Update the older/newer buttons & label.
int count = MailItems.getMailItemCount();
int max = startIndex + VISIBLE_EMAIL_COUNT;
if (max > count) {
max = count;
}
// Update the nav bar.
navBar.update(startIndex, count, max);
// Show the selected emails.
int i = 0;
for (; i < VISIBLE_EMAIL_COUNT; ++i) {
// Don't read past the end.
if (startIndex + i >= MailItems.getMailItemCount()) {
break;
}
MailItem item = MailItems.getMailItem(startIndex + i);
// Add a new row to the table, then set each of its columns to the
// email's sender and subject values.
table.setText(i, 0, item.sender);
table.setText(i, 1, item.email);
table.setText(i, 2, item.subject);
}
// Clear any remaining slots.
for (; i < VISIBLE_EMAIL_COUNT; ++i) {
table.removeRow(table.getRowCount() - 1);
}
}
void older() {
// Move forward a page.
startIndex += VISIBLE_EMAIL_COUNT;
if (startIndex >= MailItems.getMailItemCount()) {
startIndex -= VISIBLE_EMAIL_COUNT;
} else {
styleRow(selectedRow, false);
selectedRow = -1;
update();
}
}
/**
* Selects the given row (relative to the current page).
*
* @param row the row to be selected
*/
private void selectRow(int row) {
// When a row (other than the first one, which is used as a header) is
// selected, display its associated MailItem.
MailItem item = MailItems.getMailItem(startIndex + row);
if (item == null) {
return;
}
styleRow(selectedRow, false);
styleRow(row, true);
item.read = true;
selectedRow = row;
if (listener != null) {
listener.onItemSelected(item);
}
}
