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work in progress: communication client using long polling

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git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3719 fd906abe-77d9-0310-91a1-e0d9ade77398
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helmutm 2010-02-08 14:20:39 +00:00
parent a223ff070a
commit 057d498fd4
1 changed files with 74 additions and 60 deletions
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134
ajax/jocy/talk.js
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2009 Helmut Merz helmutm@cy55.de
* Copyright (c) 2010 Helmut Merz helmutm@cy55.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -23,88 +23,102 @@
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(/\/$/, '');
// TODO: close connection if already present
var conn = new jocy.talk.Connection(url, receiver, user, password);
this.connections[url] = conn;
conn.init();
conn.start();
},
send: function(url, data) {
},
close: function(url) {
}
});
jocy.talk.manager = new jocy.talk.Manager();
dojo.declare('jocy.talk.Connection', null, {
info: 'jocy.talk Connection',
constructor: function(url, receiver, user, password) {
this.url = url.replace(/\/$/, '');
this.receiver = receiver; // receive callback function
this.user = user;
this.password = password;
this.initialized = false;
this.clientId = ''; // id provided by server
constructor: function() {
this.receiver = null;
this.polling = false;
this.id = null;
},
init: function() {
// request client id
message = {request: 'start'};
open: function(receiver, id) {
this.receiver = receiver;
if (id != undefined) {
this.id = id;
} else {
this._getid();
}
this._poll();
return this.id;
},
close: function() {
return dojo.xhrPost({
url: this.url,
postData: dojo.toJson(message),
handleAs: 'json',
url: '/.stop/' + this.id,
load: dojo.hitch(this, function(response, ioArgs) {
this.clientId = response.client_id;
this.polling = false;
})
});
},
start: function() {
// start polling
},
close: function() {
},
send: function(resourcePath, data) {
send: function(path, data) {
return dojo.xhrPost({
url: this._setupUrl(resourcePath),
load: dojo.hitch(this, function(response, ioArgs) {
return this._callback(response, ioArgs);
}),
url: '/.send/' + this.id + path,
postData: dojo.toJson(data)
});
},
// private methods
_getId: function() {
return dojo.xhrPost({
url: '/.getid',
sync: true,
load: dojo.hitch(this, function(response, ioArgs) {
this.id = response;
})
});
},
_poll: function() {
if (this.polling) {
return;
}
if (this.id == undefined) {
this._getId();
}
this.polling = true;
return dojo.xhrPost({
url: '/.poll/' + this.id,
handleAs: 'json',
error: dojo.hitch(this, this._handlePollError),
load: dojo.hitch(this, this._handlePollResponse)
});
},
_setupUrl: function(path) {
slash = (path.charAt(0) == '/' ? '' : '/');
return this.url + slash + path;
_handlePollResponse: function(response, ioArgs) {
if (!this.polling) {
return;
}
this.polling = false;
t = response.type;
switch (response.type) {
case 'stop':
break;
case 'idle':
this._poll();
break;
case 'error':
self.receiver(response.data);
break;
case 'data':
this._poll();
self.receiver(response.data);
break;
default:
this.poll();
}
},
_alert: function(data) {
alert(data);
_handlePollError: function(response, ioArgs) {
if (!this.polling) {
return;
}
this.polling = false;
this._poll();
}
});
jocy.talk.connection = new jocy.talk.Connection();