@Override
public void cancel(EditorRequest<JsonObject> request) {
if (!handleServerInitiated(request)) {
// No startRequest as we don't get (or need)
// a confirmation from the server
rpc.cancel(request.getRowIndex());
}
}
/**
* Used to handle the case where the editor calls us because it was invoked by the server via
* RPC and not by the client. In that case, the request can be simply synchronously completed.
*
* @param request the request object
* @return true if the request was originally triggered by the server, false otherwise
*/
private boolean handleServerInitiated(EditorRequest<?> request) {
assert request != null : "Cannot handle null request";
assert currentRequest == null : "Earlier request not yet finished";
if (serverInitiated) {
serverInitiated = false;
request.success();
return true;
} else {
return false;
}
}
private void endRequest(boolean succeeded, String errorMessage, List<String> errorColumnsIds) {
assert currentRequest != null : "Current request was null";
/*
* Clear current request first to ensure the state is valid if
* another request is made in the callback.
*/
EditorRequest<JsonObject> request = currentRequest;
currentRequest = null;
if (succeeded) {
request.success();
} else {
Collection<Column<?, JsonObject>> errorColumns;
if (errorColumnsIds != null) {
errorColumns = new ArrayList<Grid.Column<?, JsonObject>>();
for (String colId : errorColumnsIds) {
errorColumns.add(columnIdToColumn.get(colId));
}
} else {
errorColumns = null;
}
request.failure(errorMessage, errorColumns);
}
}
@Override
public void save(EditorRequest<JsonObject> request) {
startRequest(request);
rpc.save(request.getRowIndex());
}
