Messaging How to send & receive inter-control messages Functions OAT.MSG.send(sender, message, event) Dispatches a message. sender - to object sending this message. message - a constant, defined in OAT.MSG. Developers are encouraged to add more message types. Examples include OAT_LOAD,TREE_EXPAND, and AJAX_FAILURE. event - an object carrying data relevant to this message; no particular format is required. OAT.MSG.attach(sender, message, callback) Subscribes to messages. sender - the object whose messages we want to receive; value of "*" means ALL senders. message - the message we want to receive; it is possible to use "*" or RegExpmatches here. callback - When a message arrives, callback is executed with arguments passed to appropriate OAT.MSG.send()function. OAT.MSG.detach(sender, message, callback) Detaches previously set message receiving handler. All three fields must match. Example /* assume that there exists OAT.MSG.CUSTOM_MESSAGE */ function myMessageHandler(source, message, event) { alert("Message arrived!"(; } /* subscribe to receiving... */ OAT.MSG.attach("*","CUSTOM_.*",myMessageHandler); /* dispatch message */ OAT.MSG.send(this, OAT.MSG.CUSTOM_MESSAGE, {}); // will invoke myMessageHandler CategoryDocumentation CategoryOAT CategoryOpenSource