/*
This file is part of Ext JS 4.2

Copyright (c) 2011-2013 Sencha Inc

Contact:  http://www.sencha.com/contact

Commercial Usage
Licensees holding valid commercial licenses may use this file in accordance with the Commercial
Software License Agreement provided with the Software or, alternatively, in accordance with the
terms contained in a written agreement between you and Sencha.

If you are unsure which license is appropriate for your use, please contact the sales department
at http://www.sencha.com/contact.

Build date: 2013-09-18 17:18:59 (940c324ac822b840618a3a8b2b4b873f83a1a9b1)
*/
/**
 * Provides {@link Ext.direct.Manager} support for loading form data.
 *
 * This example illustrates usage of Ext.direct.Direct to **load** a form through Ext.Direct.
 *
 *     var myFormPanel = new Ext.form.Panel({
 *         // configs for FormPanel
 *         title: 'Basic Information',
 *         renderTo: document.body,
 *         width: 300, height: 160,
 *         padding: 10,
 *
 *         // configs apply to child items
 *         defaults: {anchor: '100%'},
 *         defaultType: 'textfield',
 *         items: [{
 *             fieldLabel: 'Name',
 *             name: 'name'
 *         },{
 *             fieldLabel: 'Email',
 *             name: 'email'
 *         },{
 *             fieldLabel: 'Company',
 *             name: 'company'
 *         }],
 *
 *         // configs for BasicForm
 *         api: {
 *             // The server-side method to call for load() requests
 *             load: Profile.getBasicInfo,
 *             // The server-side must mark the submit handler as a 'formHandler'
 *             submit: Profile.updateBasicInfo
 *         },
 *         // specify the order for the passed params
 *         paramOrder: ['uid', 'foo']
 *     });
 *
 *     // load the form
 *     myFormPanel.getForm().load({
 *         // pass 2 arguments to server side getBasicInfo method (len=2)
 *         params: {
 *             foo: 'bar',
 *             uid: 34
 *         }
 *     });
 *
 * The data packet sent to the server will resemble something like:
 *
 *     [
 *         {
 *             "action":"Profile","method":"getBasicInfo","type":"rpc","tid":2,
 *             "data":[34,"bar"] // note the order of the params
 *         }
 *     ]
 *
 * The form will process a data packet returned by the server that is similar to the following format:
 *
 *     [
 *         {
 *             "action":"Profile","method":"getBasicInfo","type":"rpc","tid":2,
 *             "result":{
 *                 "success":true,
 *                 "data":{
 *                     "name":"Fred Flintstone",
 *                     "company":"Slate Rock and Gravel",
 *                     "email":"fred.flintstone@slaterg.com"
 *                 }
 *             }
 *         }
 *     ]
 */
Ext.define('Ext.form.action.DirectLoad', {
    extend:'Ext.form.action.Load',
    requires: ['Ext.direct.Manager'],
    alternateClassName: 'Ext.form.Action.DirectLoad',
    alias: 'formaction.directload',

    type: 'directload',

    run: function() {
        var me = this,
            form = me.form,
            api = form.api,
            fn = api.load,
            method, args;

        if (typeof fn !== 'function') {
            //<debug>
            var fnName = fn;
            //</debug>
            
            api.load = fn = Ext.direct.Manager.parseMethod(fn);

            //<debug>
            if (!Ext.isFunction(fn)) {
                Ext.Error.raise('Cannot resolve Ext.Direct API method ' + fnName);
            }
            //</debug>
        }
        
        method = fn.directCfg.method;
        args = method.getArgs(me.getParams(), form.paramOrder, form.paramsAsHash);
            
        args.push(me.onComplete, me);
        fn.apply(window, args);
    },

    // Direct actions have already been processed and therefore
    // we can directly set the result; Direct Actions do not have
    // a this.response property.
    processResponse: function(result) {
        return (this.result = result);
    },

    onComplete: function(data, response) {
        if (data) {
            this.onSuccess(data);
        } else {
            this.onFailure(null);
        }
    }
});


