/*

YUI 3.10.3 (build 2fb5187)

Copyright 2013 Yahoo! Inc. All rights reserved.

Licensed under the BSD License.

http://yuilibrary.com/license/

*/

YUI.add('datatable-datasource', function (Y, NAME) {

/**

 * Plugs DataTable with DataSource integration.

 *

 * @module datatable

 * @submodule datatable-datasource

 */

/**

 * Adds DataSource integration to DataTable.

 * @class Plugin.DataTableDataSource

 * @extends Plugin.Base

 */

function DataTableDataSource() {

    DataTableDataSource.superclass.constructor.apply(this, arguments);

}

/////////////////////////////////////////////////////////////////////////////

//

// STATIC PROPERTIES

//

/////////////////////////////////////////////////////////////////////////////

Y.mix(DataTableDataSource, {

    /**

     * The namespace for the plugin. This will be the property on the host which

     * references the plugin instance.

     *

     * @property NS

     * @type String

     * @static

     * @final

     * @value "datasource"

     */

    NS: "datasource",

    /**

     * Class name.

     *

     * @property NAME

     * @type String

     * @static

     * @final

     * @value "dataTableDataSource"

     */

    NAME: "dataTableDataSource",

/////////////////////////////////////////////////////////////////////////////

//

// ATTRIBUTES

//

/////////////////////////////////////////////////////////////////////////////

    ATTRS: {

        /**

        * @attribute datasource

        * @description Pointer to DataSource instance.

        * @type {DataSource}

        */

        datasource: {

            setter: "_setDataSource"

        },

        /**

        * @attribute initialRequest

        * @description Request sent to DataSource immediately upon initialization.

        * @type Object

        */

        initialRequest: {

            setter: "_setInitialRequest"

        }

    }

});

/////////////////////////////////////////////////////////////////////////////

//

// PROTOTYPE

//

/////////////////////////////////////////////////////////////////////////////

Y.extend(DataTableDataSource, Y.Plugin.Base, {

    /////////////////////////////////////////////////////////////////////////////

    //

    // ATTRIBUTE HELPERS

    //

    /////////////////////////////////////////////////////////////////////////////

    /**

    * @method _setDataSource

    * @description Creates new DataSource instance if one is not provided.

    * @param ds {Object | Y.DataSource}

    * @return {DataSource}

    * @private

    */

    _setDataSource: function(ds) {

        return ds || new Y.DataSource.Local(ds);

    },

    /**

    * @method _setInitialRequest

    * @description Sends request to DataSource.

    * @param request {Object} DataSource request.

    * @private

    */

    _setInitialRequest: function(/* request */) {

    },

    /////////////////////////////////////////////////////////////////////////////

    //

    // METHODS

    //

    /////////////////////////////////////////////////////////////////////////////

    /**

    * Initializer.

    *

    * @method initializer

    * @param config {Object} Config object.

    * @private

    */

    initializer: function(config) {

        if(!Y.Lang.isUndefined(config.initialRequest)) {

            this.load({request:config.initialRequest});

        }

    },

    ////////////////////////////////////////////////////////////////////////////

    //

    // DATA

    //

    ////////////////////////////////////////////////////////////////////////////

    /**

     * Load data by calling DataSource's sendRequest() method under the hood.

     *

     * @method load

     * @param config {object} Optional configuration parameters:

     *

     * <dl>

     * <dt>request</dt><dd>Pass in a new request, or initialRequest is used.</dd>

     * <dt>callback</dt><dd>Pass in DataSource callback object, or the following default is used:

     *    <dl>

     *      <dt>success</dt><dd>datatable.onDataReturnInitializeTable</dd>

     *      <dt>failure</dt><dd>datatable.onDataReturnInitializeTable</dd>

     *      <dt>scope</dt><dd>datatable</dd>

     *      <dt>argument</dt><dd>datatable.getState()</dd>

     *    </dl>

     * </dd>

     * <dt>datasource</dt><dd>Pass in a new DataSource instance to override the current DataSource for this transaction.</dd>

     * </dl>

     */

    load: function(config) {

        config = config || {};

        config.request = config.request || this.get("initialRequest");

        config.callback = config.callback || {

            success: Y.bind(this.onDataReturnInitializeTable, this),

            failure: Y.bind(this.onDataReturnInitializeTable, this),

            argument: this.get("host").get("state") //TODO

        };

        var ds = (config.datasource || this.get("datasource"));

        if(ds) {

            ds.sendRequest(config);

        }

    },

    /**

     * Callback function passed to DataSource's sendRequest() method populates

     * an entire DataTable with new data, clearing previous data, if any.

     *

     * @method onDataReturnInitializeTable

     * @param e {Event.Facade} DataSource Event Facade object.

     */

    onDataReturnInitializeTable : function(e) {

        var records = (e.response && e.response.results) || [];

        this.get("host").set("data", records);

    }

});

Y.namespace("Plugin").DataTableDataSource = DataTableDataSource;

}, '3.10.3', {"requires": ["datatable-base", "plugin", "datasource-local"]});