Cancellable processing of iViewer CF.request calls

RequestQueue.js

/* Use RequestQueue.request() instead of CF.request()
 * At any point, to cancel all pending callbacks, call RequestQueue.clear()
 *
 */
var RequestQueue = (function(){
	var self = {
		q: [],
		next: 0
	};

	self.request = function(url, method, headers, body, callbackFunction) {
		var reqid = self.next++;
		self.q[reqid] = true;
		CF.request(url, method, headers, body, function(status, resHeader, resBody) {
			if (self.q[reqid] !== undefined) {
				callbackFunction.apply(null, [status, resHeader, resBody]);
				delete self.q[reqid]
			}
		});
	};
	
	// call this at any point to wipe the queue clean
	self.clear = function() {
		self.q = [];
	};

	return self;
})();