/**
* Fetches and parses the message envelopes for the supplied messages. The idea is to have this be
* recursive so that we do a series of medium calls instead of one large massive call or a large
* number of smaller calls. Call it a happy balance
*/
private void fetchEnvelope(
List<WebDavMessage> startMessages, MessageRetrievalListener<WebDavMessage> listener)
throws MessagingException {
Map<String, String> headers = new HashMap<String, String>();
String messageBody;
String[] uids;
List<WebDavMessage> messages = new ArrayList<WebDavMessage>(10);
if (startMessages == null || startMessages.isEmpty()) {
return;
}
if (startMessages.size() > 10) {
List<WebDavMessage> newMessages = new ArrayList<WebDavMessage>(startMessages.size() - 10);
for (int i = 0, count = startMessages.size(); i < count; i++) {
if (i < 10) {
messages.add(i, startMessages.get(i));
} else {
newMessages.add(i - 10, startMessages.get(i));
}
}
fetchEnvelope(newMessages, listener);
} else {
messages.addAll(startMessages);
}
uids = new String[messages.size()];
for (int i = 0, count = messages.size(); i < count; i++) {
uids[i] = messages.get(i).getUid();
}
messageBody = store.getMessageEnvelopeXml(uids);
headers.put("Brief", "t");
DataSet dataset = store.processRequest(this.mFolderUrl, "SEARCH", messageBody, headers);
Map<String, ParsedMessageEnvelope> envelopes = dataset.getMessageEnvelopes();
int count = messages.size();
for (int i = messages.size() - 1; i >= 0; i--) {
WebDavMessage message = messages.get(i);
if (listener != null) {
listener.messageStarted(messages.get(i).getUid(), i, count);
}
ParsedMessageEnvelope envelope = envelopes.get(message.getUid());
if (envelope != null) {
message.setNewHeaders(envelope);
message.setFlagInternal(Flag.SEEN, envelope.getReadStatus());
} else {
Log.e(LOG_TAG, "Asked to get metadata for a non-existent message: " + message.getUid());
}
if (listener != null) {
listener.messageFinished(messages.get(i), i, count);
}
}
}
