File transfer

[jyhong836]

File transfer is a necessary function for current users. User should be abel to drag file into the client for transfer.

• [x] Basic file transfer function. (success with resource)
• [ ] Choose file save location.
• [x] Drag and drop file.
• [x] Copy and paste file.
• [ ] Transfer file to account without resource specified.

[jyhong836]

The 'drag and drop file' and 'copy and paste file' feature is viewed same in cocoa.

[jyhong836]

Now I'm working for sending file from path, which means unsupported for URL or images context.

[jyhong836]

The NSFileWrapper require an existing file for wrapper. However, in the sending message could not include absolute file path. That's an issue.

[jyhong836]

:warning: When use target account without any resource, the FileTransferManager will try to search for resource who capable for file transfer at highest priority. Refer to FileTransferManagerImpl.cpp:103,

boost::optional<JID> FileTransferManagerImpl::highestPriorityJIDSupportingFileTransfer(const JID& bareJID) {
    JID fullReceipientJID;
    int priority = INT_MIN;

    //getAllPresence(bareJID) gives you all presences for the bare JID (i.e. all resources) Isode Limited. @ 11:11
    std::vector<Presence::ref> presences = presenceOracle->getAllPresence(bareJID);

    //iterate over them
    foreach(Presence::ref pres, presences) {
        if (pres->getPriority() > priority) {
            // look up caps from the jid
            DiscoInfo::ref info = capsProvider->getCaps(pres->getFrom());
            if (isSupportedBy(info)) {
                priority = pres->getPriority();
                fullReceipientJID = pres->getFrom();
            }
        }
    }

    return fullReceipientJID.isValid() ? boost::optional<JID>(fullReceipientJID) : boost::optional<JID>();
}

But it always return NULL, in GUI situation, not in xctest.

The reason may be the presence is not found.

[jyhong836]

1. [x] Check if it goes wrong with presence.
2. [ ] The presence should be bond to resource.

[jyhong836]

I have checked, there is no error with presence getting. The client I tested with has no file transfer feature.

[jyhong836]

Now I'm working for issue #25, to solve the NSTextAttachment UI bug. So this issue would be delayed for some time.