@Override
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
throws Exception {
int page = Integer.parseInt(request.getParameter("page")) - 1;
int rows = Integer.parseInt(request.getParameter("rows"));
int start = page * rows;
int end = ((page + 1) * rows);
int total = model_.getRowCount();
if (end > total) {
end = total;
}
JMap data = new JMap().put("total", total);
JArray datas = new JArray();
int c = 0;
for (int i = start; i < end; i++) {
JMap row = new JMap();
for (int j = 0; j < model_.getColumnCount(); j++) {
row.put(j + "", model_.getValueAt(j, c, page).toString());
}
datas.add(row);
c++;
}
data.put("rows", datas);
ServletOutputStream out = response.getOutputStream();
response.setHeader("Content-Type", "application/json");
out.write(data.getJavascript().getBytes());
out.flush();
return null;
}
@Override
public void onReady(ClientProxy proxy) {
super.onReady(proxy);
JMap map = new JMap();
int columns = model_.getColumnCount();
JArray cols = new JArray();
for (int i = 0; i < columns; i++) {
Class<?> t = model_.getColumnClass(i);
JMap colOpt = new JMap();
colOpt.put("field", i + "").put("title", model_.getColumnNameAt(i));
if (t.isAssignableFrom(Boolean.class)) {
colOpt.put("checkbox", true);
}
cols.add(new JArray().add(colOpt));
}
map.put("columns", cols);
map.put("url", ResourceUtil.getMethodUrl(this));
map.put("pagination", true);
map.put("showFooter", true);
proxy.addMethod("datagrid", map);
}