CODEWITHSUNDEEP
javascriptmacosevent-handlingosascript
Harry
Harry

Reputation: 103

How to translate 'using terms from ...' to Javascript in an OSA Event Handler

I want to call some JavaScript code using the osascript command. The code should stay running until it receives a chat message from Messages. Ultimately, I intend to execute this from node and receive back the chat message, sender, etc.

I am able to compile a 'stay-running' JavaScript app and run it via 

osascript -l JavaScript JSiMessageReceiver.app

where JSiMessageReceiver.app is 

function run() {
    var Messages = Application('Messages');
    Messages.includeStandardAdditions = true;
    console.log('started');
}

function quit() { // should prevent app from quitting
    return true;  // according to Apple's developer release notes
}

function messageReceived(text) {
    console.log('message received: ' + text);
}

Of course, the messageReceived handler is never called, because it is not yet associated with Messages. In AppleScript this is done via 

using terms from application "Messages"
    on message received theMessage from theBuddy for theChat
        processMessage("message received", theMessage, theBuddy, theChat)
    end message received
end using terms from

How does this translate into JavaScript? I did not find any documentation on this. Any ideas?

Upvotes: 1

Views: 259

Answers (1)

Dmitry Stolbov
Dmitry Stolbov

Reputation: 2817

Try this on JavaScript:

function messageReceived(theMessage, eventDescription) {
    processMessage("message received", theMessage,
                    eventDescription.from, eventDescription.for);
}

See event description of messageReceived function in AppleScript Editor - menu Window > Library - Messages Event Handler Suite. The worked example from Jake Wolpert is there: Attach event listeners in OS X JavaScript for Automation (JXA)

Upvotes: 1

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