HTML and CSS Reference
In-Depth Information
es
.
engine
.
send
(
r
);
}
When ElectroServer responds from the
LoginRequest
, it is time to join a
zone
and a
room
.
Recall that any user connected to ElectroServer needs to belong to a
room
, and every
room
belongstoa
zone
.Therefore,weneedtomakeauserbelongtooneofeach,whichweaccom-
plish with a
CreateRoomRequest()
. We set the
zoneName
property to
TestZoneChat
and the
roomName
property to
TestRoomChat
. If either of these does not already exist, it will be cre-
ated by the server. If they do exist, the user will be added to them. We then send the message
to ElectroServer:
function
function
onLoginResponse
(
event
) {
statusMessages
.
push
(
"Login Successful?: "
+
event
.
successful
);
username
=
event
.
userName
;
var
var
crr
=
new
new
CreateRoomRequest
();
crr
.
zoneName
=
"TestZoneChat"
;
crr
.
roomName
=
"TestRoomChat"
;
es
.
engine
.
send
(
crr
);
}
WestillneedtowaitforacoupleresponsesfromElectroServereventsthatcomebackthrough
the API via port 8989. We know we have to join a
zone
, and we handle the event with the
function
onJoinZoneEvent()
, but we don't need to do anything with it:
function
function
onJoinZoneEvent
(
event
) {
statusMessages
.
push
(
"joined a zone"
);
}
The most important event we are waiting to handle is
JoinRoomEvent
. When we receive this
event, we know that we have joined both a
zone
and a
room
, and the application is ready
to run. For the chat application, this means the user can start typing and sending messages.
First, we set the
_room
variable equal to the
Room
object, which was returned by the event
from
ElectroServer
. We will use this variable for our further communications with
Elec-
troServer
. The other thing we do in this function is set an HTML
<div>
with the
id
of
inputForm
, which is made visible by changing its style. The
inputForm <div>
is invisible
when the page loads. We do this so that the user won't send chat messages before the con-
nection to
ElectroServer
is established. Now that everything is ready to go, we display the
inputForm <div>
so that chatting can start:
