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YUI.add('datasource-io', function (Y, NAME) {
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/**
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* Provides a DataSource implementation which can be used to retrieve data via the IO Utility.
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*
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* @module datasource
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* @submodule datasource-io
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*/
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/**
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* IO subclass for the DataSource Utility.
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* @class DataSource.IO
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* @extends DataSource.Local
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* @constructor
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*/
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var DSIO = function() {
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DSIO.superclass.constructor.apply(this, arguments);
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};
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/////////////////////////////////////////////////////////////////////////////
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//
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// DataSource.IO static properties
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//
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/////////////////////////////////////////////////////////////////////////////
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Y.mix(DSIO, {
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/**
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* Class name.
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*
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* @property NAME
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* @type String
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* @static
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* @final
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* @value "dataSourceIO"
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*/
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NAME: "dataSourceIO",
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/////////////////////////////////////////////////////////////////////////////
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//
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// DataSource.IO Attributes
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//
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/////////////////////////////////////////////////////////////////////////////
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ATTRS: {
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/**
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* Pointer to IO Utility.
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*
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* @attribute io
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* @type Y.io
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* @default Y.io
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*/
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io: {
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value: Y.io,
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cloneDefaultValue: false
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},
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/**
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* Default IO Config.
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*
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* @attribute ioConfig
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* @type Object
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* @default null
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*/
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ioConfig: {
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value: null
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}
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}
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});
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Y.extend(DSIO, Y.DataSource.Local, {
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/**
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* Internal init() handler.
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*
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* @method initializer
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* @param config {Object} Config object.
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* @private
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*/
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initializer: function(config) {
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this._queue = {interval:null, conn:null, requests:[]};
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},
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/**
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* IO success callback.
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*
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* @method successHandler
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* @param id {String} Transaction ID.
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* @param response {String} Response.
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* @param e {EventFacade} Event facade.
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* @private
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*/
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successHandler: function (id, response, e) {
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var defIOConfig = this.get("ioConfig"),
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payload = e.details[0];
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delete Y.DataSource.Local.transactions[e.tId];
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payload.data = response;
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this.fire("data", payload);
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Y.log("Received IO data response for \"" + e.request + "\"", "info", "datasource-io");
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if (defIOConfig && defIOConfig.on && defIOConfig.on.success) {
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defIOConfig.on.success.apply(defIOConfig.context || Y, arguments);
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}
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},
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/**
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* IO failure callback.
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*
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* @method failureHandler
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* @param id {String} Transaction ID.
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* @param response {String} Response.
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* @param e {EventFacade} Event facade.
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* @private
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*/
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failureHandler: function (id, response, e) {
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var defIOConfig = this.get("ioConfig"),
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payload = e.details[0];
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delete Y.DataSource.Local.transactions[e.tId];
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payload.error = new Error("IO data failure");
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Y.log("IO data failure", "error", "datasource-io");
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payload.data = response;
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this.fire("data", payload);
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Y.log("Received IO data failure for \"" + e.request + "\"", "info", "datasource-io");
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if (defIOConfig && defIOConfig.on && defIOConfig.on.failure) {
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defIOConfig.on.failure.apply(defIOConfig.context || Y, arguments);
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}
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},
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/**
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* @property _queue
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* @description Object literal to manage asynchronous request/response
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* cycles enabled if queue needs to be managed (asyncMode/ioConnMode):
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* <dl>
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* <dt>interval {Number}</dt>
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* <dd>Interval ID of in-progress queue.</dd>
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* <dt>conn</dt>
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* <dd>In-progress connection identifier (if applicable).</dd>
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* <dt>requests {Object[]}</dt>
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* <dd>Array of queued request objects: {request:request, callback:callback}.</dd>
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* </dl>
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* @type Object
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* @default {interval:null, conn:null, requests:[]}
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* @private
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*/
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_queue: null,
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/**
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* Passes query string to IO. Fires <code>response</code> event when
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* response is received asynchronously.
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*
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* @method _defRequestFn
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* @param e {EventFacade} Event Facade with the following properties:
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* <dl>
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* <dt>tId (Number)</dt> <dd>Unique transaction ID.</dd>
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* <dt>request (Object)</dt> <dd>The request.</dd>
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* <dt>callback (Object)</dt> <dd>The callback object with the following properties:
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* <dl>
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* <dt>success (Function)</dt> <dd>Success handler.</dd>
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* <dt>failure (Function)</dt> <dd>Failure handler.</dd>
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* </dl>
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* </dd>
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* <dt>cfg (Object)</dt> <dd>Configuration object.</dd>
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* </dl>
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* @protected
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*/
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_defRequestFn: function(e) {
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var uri = this.get("source"),
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io = this.get("io"),
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defIOConfig = this.get("ioConfig"),
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request = e.request,
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cfg = Y.merge(defIOConfig, e.cfg, {
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on: Y.merge(defIOConfig, {
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success: this.successHandler,
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failure: this.failureHandler
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}),
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context: this,
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"arguments": e
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});
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// Support for POST transactions
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if(Y.Lang.isString(request)) {
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if(cfg.method && (cfg.method.toUpperCase() === "POST")) {
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cfg.data = cfg.data ? cfg.data+request : request;
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}
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else {
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uri += request;
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}
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}
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Y.DataSource.Local.transactions[e.tId] = io(uri, cfg);
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return e.tId;
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}
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});
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Y.DataSource.IO = DSIO;
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}, '3.18.1', {"requires": ["datasource-local", "io-base"]});
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