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work in progress: implement simple communication protocol with long polling

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git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3716 fd906abe-77d9-0310-91a1-e0d9ade77398
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helmutm 2010-02-08 07:09:45 +00:00
parent 6beafcc54a
commit a223ff070a
1 changed files with 60 additions and 104 deletions
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164
ajax/jocy/talk.js
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@ -16,139 +16,95 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
*
* $Id$
*
*/
// $Id$
dojo.provide('jocy.talk');
dojo.declare('jocy.talk.Manager', null, {
info: 'jocy.talk Manager',
constructor: function(){
this.connections = {}; // map URLs to connection objects
},
start: function(url, receiver, user, password) {
url = url.replace(/\/$/, '');
// TODO: close connection if already present
var conn = new jocy.talk.Connection(url, receiver, user, password);
this.connections[url] = conn;
conn.init();
conn.start();
},
send: function(url, data) {
},
close: function(url) {
}
});
jocy.talk.manager = new jocy.talk.Manager();
dojo.declare('jocy.talk.Connection', null, {
info: 'jocy.talk Connection',
constructor: function(url, client, user, password){
constructor: function(url, receiver, user, password) {
this.url = url.replace(/\/$/, '');
this.client = client;
this.receiver = receiver; // receive callback function
this.user = user;
this.password = password;
this._cometdInitialized = false;
},
initCometd: function() {
if (!this._cometdInitialized) {
dojox.cometd.init(this.url + '/cometd');
this._cometdInitialized = true;
}
},
unload: function(){
if (this._cometdInitialized) {
dojox.cometd.disconnect();
this._cometdInitialized = false;
}
this.initialized = false;
this.clientId = ''; // id provided by server
},
// ReST methods
get: function(resourcePath, data, cbName, user, password) {
return dojo.xhrGet({
url: this._setupUrl(resourcePath),
load: dojo.hitch(this, function(response, ioArgs) {
return this._callback(response, ioArgs, cbName);
}),
content: data,
init: function() {
// request client id
message = {request: 'start'};
return dojo.xhrPost({
url: this.url,
postData: dojo.toJson(message),
handleAs: 'json',
user: user,
password: password
});
},
getSynchronous: function(resourcePath, data) {
var result = {};
dojo.xhrGet({
url: this._setupUrl(resourcePath),
load: function(response, ioArgs) {
result = response;
return response;
},
content: data,
handleAs: 'json',
user: this.user,
password: this.password,
sync: true
});
return result;
},
put: function(resourcePath, data, cbName) {
return dojo.xhrPut({
url: this._setupU(cbName),
load: dojo.hitch(this, function(response, ioArgs) {
return this._callback(response, ioArgs, cbName);
}),
putData: dojo.toJson(data),
this.clientId = response.client_id;
})
});
},
post: function(resourcePath, data, cbName) {
return dojo.xhrGet({
start: function() {
// start polling
},
close: function() {
},
send: function(resourcePath, data) {
return dojo.xhrPost({
url: this._setupUrl(resourcePath),
load: dojo.hitch(this, function(response, ioArgs) {
return this._callback(response, ioArgs, cbName);
return this._callback(response, ioArgs);
}),
postData: dojo.toJson(data)
});
},
rpc: function(resourcePath, methodName, data, cbName) {
return this.post(resourcePath, {method: methodName, data: data}, cbName);
},
remove: function(resourcePath, cbName) {
return dojo.xhrDelete({
url: this._setupU(resourcePath),
load: dojo.hitch(this, function(response, ioArgs) {
return this._callback(response, ioArgs, cbName);
}),
});
},
// cometd methods
publish: function(channel, data) {
this.initCometd();
return dojox.cometd.publish(channel, data);
},
subscribe: function(channel, cbName){
this.initCometd();
return dojox.cometd.subscribe(channel, this.client, cbName);
},
unsubscribe: function(channel){
this.initCometd();
return dojox.cometd.unsubscribe(channel, this.client);
},
// private methods
_poll: function() {
},
_setupUrl: function(path) {
slash = (path.charAt(0) == '/' ? '' : '/');
return this.url + slash + path;
},
_callback: function(response, ioArgs, cbName) {
this.client[cbName](response);
return response;
},
/* dojox.cometd example */
join: function(name) {
if(name == null || name.length==0 ){
alert('Please enter a username!');
} else {
this._username=name;
dojox.cometd.startBatch();
dojox.cometd.subscribe("/chat/demo", this, "_alert");
dojox.cometd.publish("/chat/demo",
{user: this._username, join: true,
chat: this._username + " has joined"});
dojox.cometd.endBatch();
this._meta = dojo.subscribe("/cometd/meta", function(event) {
console.debug(event);
});
}
},
_alert: function(data) {
alert(data);
},
}
});