How can I confirm a Twitter web intent was sent? - twitter

Question

I'd like to confirm a user tweeted after clicking a Twitter Web Intent. How can I accomplish this?
Example:
Tweet
Assuming an anonymous* user clicks this link and tweets, how can I confirm this?
Ideally I'd love to get a link to the tweet.
* anonymous as in not authenticated on my site and without knowing their Twitter username

Answer 1

Update
This solution no longer works after Twitter updated the behaviour of the widgets. You can only track if the tweet button was clicked now, and not if the tweet was actually posted.
You can track tweets using the 'twttr.events.bind' event listener form the Twitter API. A working example of tracking tweets can be found here: http://jsfiddle.net/EZ4wu/3/
HTML:
<i class="icon-twitter-sign icon-white"></i> Tweet
JavaScript:
function reward_user( event ) {
if ( event ) {
alert( 'Tweeted' );
console.log( event );
}
}
window.twttr = (function (d,s,id) {
var t, js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return; js=d.createElement(s); js.id=id;
js.src="//platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs);
return window.twttr || (t = { _e: [], ready: function(f){ t._e.push(f) } });
}(document, "script", "twitter-wjs"));
twttr.ready(function (twttr) {
twttr.events.bind('tweet', reward_user);
});
My previous solution is now outdated and no longer appears to work.

Answer 2

Try this:
twttr.events.bind('loaded', function(event) {
window.location = "http://theredirect_link.com"
});

Answer 3

#Niroj's answer no longer works. They updated the api, so the event listener fires immediately after user clicks the button - you have no way of checking if he actually tweeted.
If you create the window yourself (without using Twitter widgets), you can at least detect if the window was closed (either user closed it or tweeted).
Don't link the widgets api!
HTML:
<a id="twitter-intent" href="https://twitter.com/intent/tweet?url=https://www.webniraj.com/2012/09/11/twitter-api-tweet-button-callbacks/&text=Twitter+API:+Tweet+Button+Callbacks"><i class="icon-twitter-sign icon-white"></i> Tweet</a>
JS:
document.getElementById('twitter-intent').addEventListener('click', function(e) {
e.preventDefault();
e.stopPropagation(); //this should do in case you don't want to unlink twitter widgets api
var width = 575,
height = 400,
left = (screen.width - width) / 2,
top = (screen.height - height) / 2,
url = this.href,
opts = 'status=1' +
',width=' + width +
',height=' + height +
',top=' + top +
',left=' + left;
var win = window.open(url, 'twitter_share', opts);
var timer = setInterval(checkWin, 500);
function checkWin() {
if (win.closed) {
//just assume the user tweeted (he could just close the window without tweeting)
alert("Thank you for tweeting!");
clearInterval(timer);
}
}
});