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<title>The source code</title>
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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
<div id="cls-Ext.direct.Provider"></div>/**
* @class Ext.direct.Provider
* @extends Ext.util.Observable
* <p>Ext.direct.Provider is an abstract class meant to be extended.</p>
*
* <p>For example ExtJs implements the following subclasses:</p>
* <pre><code>
Provider
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+---{@link Ext.direct.JsonProvider JsonProvider}
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+---{@link Ext.direct.PollingProvider PollingProvider}
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+---{@link Ext.direct.RemotingProvider RemotingProvider}
* </code></pre>
* @abstract
*/
Ext.direct.Provider = Ext.extend(Ext.util.Observable, {
<div id="cfg-Ext.direct.Provider-id"></div>/**
* @cfg {String} id
* The unique id of the provider (defaults to an {@link Ext#id auto-assigned id}).
* You should assign an id if you need to be able to access the provider later and you do
* not have an object reference available, for example:
* <pre><code>
Ext.Direct.addProvider(
{
type: 'polling',
url: 'php/poll.php',
id: 'poll-provider'
}
);
var p = {@link Ext.Direct Ext.Direct}.{@link Ext.Direct#getProvider getProvider}('poll-provider');
p.disconnect();
* </code></pre>
*/
<div id="cfg-Ext.direct.Provider-priority"></div>/**
* @cfg {Number} priority
* Priority of the request. Lower is higher priority, <tt>0</tt> means "duplex" (always on).
* All Providers default to <tt>1</tt> except for PollingProvider which defaults to <tt>3</tt>.
*/
priority: 1,
<div id="cfg-Ext.direct.Provider-type"></div>/**
* @cfg {String} type
* <b>Required</b>, <tt>undefined</tt> by default. The <tt>type</tt> of provider specified
* to {@link Ext.Direct Ext.Direct}.{@link Ext.Direct#addProvider addProvider} to create a
* new Provider. Acceptable values by default are:<div class="mdetail-params"><ul>
* <li><b><tt>polling</tt></b> : {@link Ext.direct.PollingProvider PollingProvider}</li>
* <li><b><tt>remoting</tt></b> : {@link Ext.direct.RemotingProvider RemotingProvider}</li>
* </ul></div>
*/
// private
constructor : function(config){
Ext.apply(this, config);
this.addEvents(
<div id="event-Ext.direct.Provider-connect"></div>/**
* @event connect
* Fires when the Provider connects to the server-side
* @param {Ext.direct.Provider} provider The {@link Ext.direct.Provider Provider}.
*/
'connect',
<div id="event-Ext.direct.Provider-disconnect"></div>/**
* @event disconnect
* Fires when the Provider disconnects from the server-side
* @param {Ext.direct.Provider} provider The {@link Ext.direct.Provider Provider}.
*/
'disconnect',
<div id="event-Ext.direct.Provider-data"></div>/**
* @event data
* Fires when the Provider receives data from the server-side
* @param {Ext.direct.Provider} provider The {@link Ext.direct.Provider Provider}.
* @param {event} e The {@link Ext.Direct#eventTypes Ext.Direct.Event type} that occurred.
*/
'data',
<div id="event-Ext.direct.Provider-exception"></div>/**
* @event exception
* Fires when the Provider receives an exception from the server-side
*/
'exception'
);
Ext.direct.Provider.superclass.constructor.call(this, config);
},
<div id="method-Ext.direct.Provider-isConnected"></div>/**
* Returns whether or not the server-side is currently connected.
* Abstract method for subclasses to implement.
*/
isConnected: function(){
return false;
},
<div id="prop-Ext.direct.Provider-connect"></div>/**
* Abstract methods for subclasses to implement.
*/
connect: Ext.emptyFn,
<div id="prop-Ext.direct.Provider-disconnect"></div>/**
* Abstract methods for subclasses to implement.
*/
disconnect: Ext.emptyFn
});
</pre>
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