public final void onRequest() {
RequestCycle requestCycle = getComponent().getRequestCycle();
Request request = requestCycle.getRequest();
IRequestParameters parameters = request.getRequestParameters();
StringValue input = parameters.getParameterValue("term");
final Iterable<T> choices = getChoices(input.toString(""));
String jsonArray = createJson(choices);
requestCycle.scheduleRequestHandlerAfterCurrent(
new TextRequestHandler("application/json", "UTF-8", jsonArray));
}
@Override
public void onResourceRequested() {
// this is the callback that retrieves matching choices used to populate the dropdown
Request request = getRequestCycle().getRequest();
IRequestParameters params = request.getRequestParameters();
// retrieve choices matching the search term
String term = params.getParameterValue("term").toOptionalString();
int page = params.getParameterValue("page").toInt(1);
// select2 uses 1-based paging, but in wicket world we are used to
// 0-based
page -= 1;
Response<T> response = new Response<T>();
provider.query(term, page, response);
// jsonize and write out the choices to the response
WebResponse webResponse = (WebResponse) getRequestCycle().getResponse();
webResponse.setContentType("application/json");
OutputStreamWriter out =
new OutputStreamWriter(webResponse.getOutputStream(), getRequest().getCharset());
JSONWriter json = new JSONWriter(out);
try {
json.object();
json.key("results").array();
for (T item : response) {
json.object();
provider.toJson(item, json);
json.endObject();
}
json.endArray();
json.key("more").value(response.getHasMore()).endObject();
} catch (JSONException e) {
throw new RuntimeException("Could not write Json response", e);
}
try {
out.flush();
} catch (IOException e) {
throw new RuntimeException("Could not write Json to servlet response", e);
}
}
@Override
public Session newSession(final Request request, final Response response) {
if (!DEMO_MODE_USING_CREDENTIALS_AS_QUERYARGS) {
return super.newSession(request, response);
}
// else demo mode
final AuthenticatedWebSessionForIsis s =
(AuthenticatedWebSessionForIsis) super.newSession(request, response);
IRequestParameters requestParameters = request.getRequestParameters();
final org.apache.wicket.util.string.StringValue user =
requestParameters.getParameterValue("user");
final org.apache.wicket.util.string.StringValue password =
requestParameters.getParameterValue("pass");
s.signIn(user.toString(), password.toString());
return s;
}
