API: datasource YAHOO.util.XHRDataSource (YUI Library)

Class YAHOO.util.XHRDataSource - extends YAHOO.util.DataSourceBase

XHRDataSource class for accessing remote data via the YUI Connection Manager Utility

Constructor

YAHOO.util.XHRDataSource

Parameters:: oLiveData <HTMLElement> Pointer to live data.; oConfigs <object> (optional) Object literal of configuration values.

Properties

_xhrCallback - `private object`

Define Connection Manager callback object

connMethodPost - `Boolean`

True if data is to be sent via POST. By default, data will be sent via GET.

Default Value: false

connMgr - `Object`

Alias to YUI Connection Manager, to allow implementers to use a custom class.

Default Value: YAHOO.util.Connect

connTimeout - `Number`

The connection timeout defines how many milliseconds the XHR connection will wait for a server response. Any non-zero value will enable the Connection Manager's Auto-Abort feature.

Default Value: 0

connXhrMode - `String`

Defines request/response management in the following manner:

queueRequests: If a request is already in progress, wait until response is returned before sending the next request.
cancelStaleRequests: If a request is already in progress, cancel it before sending the next request.
ignoreStaleResponses: Send all requests, but handle only the response for the most recently sent request.
allowAll: Send all requests and handle all responses.

Default Value: "allowAll"

Properties inherited from YAHOO.util.DataSourceBase:


                                    
                                        
                                        _aCache,
                                        
                                    
                                        
                                        _aIntervals,
                                        
                                    
                                        
                                        _oQueue,
                                        
                                    
                                        
                                        _sName,
                                        
                                    
                                        
                                        cloneBeforeCaching,
                                        
                                    
                                        
                                        dataType,
                                        
                                    
                                        
                                        ERROR_DATAINVALID,
                                        
                                    
                                        
                                        ERROR_DATANULL,
                                        
                                    
                                        
                                        liveData,
                                        
                                    
                                        
                                        maxCacheEntries,
                                        
                                    
                                        
                                        parseJSONArgs,
                                        
                                    
                                        
                                        responseSchema,
                                        
                                    
                                        
                                        responseType,
                                        
                                    
                                        
                                        TYPE_HTMLTABLE,
                                        
                                    
                                        
                                        TYPE_JSARRAY,
                                        
                                    
                                        
                                        TYPE_JSFUNCTION,
                                        
                                    
                                        
                                        TYPE_JSON,
                                        
                                    
                                        
                                        TYPE_LOCAL,
                                        
                                    
                                        
                                        TYPE_SCRIPTNODE,
                                        
                                    
                                        
                                        TYPE_TEXT,
                                        
                                    
                                        
                                        TYPE_UNKNOWN,
                                        
                                    
                                        
                                        TYPE_XHR,
                                        
                                    
                                        
                                        TYPE_XML,
                                        
                                    
                                        
                                        useXPath

Methods

_xhrFailure


                                         private 
                                        
                                        
                                        void
                                            _xhrFailure
                                           (
                                                
                                                        
                                                         oResponse
                                                    
                                                
                                            )

Define Connection Manager failure handler

Parameters:: oResponse <Object> HTTPXMLRequest object

_xhrSuccess


                                         private 
                                        
                                        
                                        void
                                            _xhrSuccess
                                           (
                                                
                                                        
                                                         oResponse
                                                    
                                                
                                            )

Define Connection Manager success handler

Parameters:: oResponse <Object> HTTPXMLRequest object

makeConnection


                                        
                                        
                                        
                                        Number
                                            makeConnection
                                           (
                                                
                                                        
                                                         oRequest
                                                    
                                                
                                                        , 
                                                         oCallback
                                                    
                                                
                                                        , 
                                                         oCaller
                                                    
                                                
                                            )

Overriding method passes query to Connection Manager. The returned response is then forwarded to the handleResponse function.

Parameters:: oRequest <Object> Request object.; oCallback <Object> Callback object literal.; oCaller <Object> (deprecated) Use oCallback.scope.

Returns: Number: Transaction ID.

Methods inherited from YAHOO.util.DataSourceBase:


                                                                                    
                                            addToCache,
                                            
                                                                                    
                                            clearAllIntervals,
                                            
                                                                                    
                                            clearInterval,
                                            
                                                                                    
                                            doBeforeCallback,
                                            
                                                                                    
                                            doBeforeParseData,
                                            
                                                                                    
                                            flushCache,
                                            
                                                                                    
                                            getCachedResponse,
                                            
                                                                                    
                                            handleResponse,
                                            
                                                                                    
                                            isCacheHit,
                                            
                                                                                    
                                            makeConnection,
                                            
                                                                                    
                                            parseArrayData,
                                            
                                                                                    
                                            parseData,
                                            
                                                                                    
                                            parseHTMLTableData,
                                            
                                                                                    
                                            parseJSONData,
                                            
                                                                                    
                                            parseTextData,
                                            
                                                                                    
                                            parseXMLData,
                                            
                                                                                    
                                            parseXMLResult,
                                            
                                                                                    
                                            sendRequest,
                                            
                                                                                    
                                            setInterval,
                                            
                                                                                    
                                            toString

Events inherited from YAHOO.util.DataSourceBase:


                                        
                                        cacheFlushEvent,
                                        
                                                                            
                                        cacheRequestEvent,
                                        
                                                                            
                                        cacheResponseEvent,
                                        
                                                                            
                                        dataErrorEvent,
                                        
                                                                            
                                        requestEvent,
                                        
                                                                            
                                        responseCacheEvent,
                                        
                                                                            
                                        responseEvent,
                                        
                                                                            
                                        responseParseEvent,

Yahoo! UI Library

DataSource Utility 2.9.0

Class YAHOO.util.XHRDataSource - extends YAHOO.util.DataSourceBase

Constructor

Properties

_xhrCallback - `private object`

connMethodPost - `Boolean`

connMgr - `Object`

connTimeout - `Number`

connXhrMode - `String`

Properties inherited from YAHOO.util.DataSourceBase:

Methods

_xhrFailure

_xhrSuccess

makeConnection

Methods inherited from YAHOO.util.DataSourceBase:

Events inherited from YAHOO.util.DataSourceBase:

Modules

Classes

Files

Properties

Methods

Yahoo! UI Library

DataSource Utility 2.9.0

Class YAHOO.util.XHRDataSource - extends YAHOO.util.DataSourceBase

Constructor

Properties

_xhrCallback - private object

connMethodPost - Boolean

connMgr - Object

connTimeout - Number

connXhrMode - String

Properties inherited from YAHOO.util.DataSourceBase:

Methods

_xhrFailure

_xhrSuccess

makeConnection

Methods inherited from YAHOO.util.DataSourceBase:

Events inherited from YAHOO.util.DataSourceBase:

Modules

Classes

Files

Properties

Methods

_xhrCallback - `private object`

connMethodPost - `Boolean`

connMgr - `Object`

connTimeout - `Number`

connXhrMode - `String`