lixinru
/
YtIoT


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206
							<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>The source code</title>
  <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
  <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
  <style type="text/css">
    .highlight { display: block; background-color: #ddd; }
  </style>
  <script type="text/javascript">
    function highlight() {
      document.getElementById(location.hash.replace(/#/, "")).className = "highlight";
    }
  </script>
</head>
<body onload="prettyPrint(); highlight();">
  <pre class="prettyprint lang-js"><span id='Ext-ModelManager'>/**
</span> * @author Ed Spencer
 * @class Ext.ModelManager

The ModelManager keeps track of all {@link Ext.data.Model} types defined in your application.

__Creating Model Instances__

Model instances can be created by using the {@link Ext#create Ext.create} method. Ext.create replaces
the deprecated {@link #create Ext.ModelManager.create} method. It is also possible to create a model instance
this by using the Model type directly. The following 3 snippets are equivalent:

    Ext.define('User', {
        extend: 'Ext.data.Model',
        fields: ['first', 'last']
    });

    // method 1, create using Ext.create (recommended)
    Ext.create('User', {
        first: 'Ed',
        last: 'Spencer'
    });

    // method 2, create through the manager (deprecated)
    Ext.ModelManager.create({
        first: 'Ed',
        last: 'Spencer'
    }, 'User');

    // method 3, create on the type directly
    new User({
        first: 'Ed',
        last: 'Spencer'
    });

__Accessing Model Types__

A reference to a Model type can be obtained by using the {@link #getModel} function. Since models types
are normal classes, you can access the type directly. The following snippets are equivalent:

    Ext.define('User', {
        extend: 'Ext.data.Model',
        fields: ['first', 'last']
    });

    // method 1, access model type through the manager
    var UserType = Ext.ModelManager.getModel('User');

    // method 2, reference the type directly
    var UserType = User;

 * @markdown
 * @singleton
 */
Ext.define('Ext.ModelManager', {
    extend: 'Ext.AbstractManager',
    alternateClassName: 'Ext.ModelMgr',
    requires: ['Ext.data.association.Association'],
    
    singleton: true,

    typeName: 'mtype',

<span id='Ext-ModelManager-property-associationStack'>    /**
</span>     * Private stack of associations that must be created once their associated model has been defined
     * @property {Ext.data.association.Association[]} associationStack
     */
    associationStack: [],

<span id='Ext-ModelManager-method-registerType'>    /**
</span>     * Registers a model definition. All model plugins marked with isDefault: true are bootstrapped
     * immediately, as are any addition plugins defined in the model config.
     * @private
     */
    registerType: function(name, config) {
        var proto = config.prototype,
            model;
        if (proto &amp;&amp; proto.isModel) {
            // registering an already defined model
            model = config;
        } else {
            // passing in a configuration
            if (!config.extend) {
                config.extend = 'Ext.data.Model';
            }
            model = Ext.define(name, config);
        }
        this.types[name] = model;
        return model;
    },

<span id='Ext-ModelManager-method-onModelDefined'>    /**
</span>     * @private
     * Private callback called whenever a model has just been defined. This sets up any associations
     * that were waiting for the given model to be defined
     * @param {Function} model The model that was just created
     */
    onModelDefined: function(model) {
        var stack  = this.associationStack,
            length = stack.length,
            create = [],
            association, i, created;

        for (i = 0; i &lt; length; i++) {
            association = stack[i];

            if (association.associatedModel == model.modelName) {
                create.push(association);
            }
        }

        for (i = 0, length = create.length; i &lt; length; i++) {
            created = create[i];
            this.types[created.ownerModel].prototype.associations.add(Ext.data.association.Association.create(created));
            Ext.Array.remove(stack, created);
        }
    },

<span id='Ext-ModelManager-method-registerDeferredAssociation'>    /**
</span>     * Registers an association where one of the models defined doesn't exist yet.
     * The ModelManager will check when new models are registered if it can link them
     * together
     * @private
     * @param {Ext.data.association.Association} association The association
     */
    registerDeferredAssociation: function(association){
        this.associationStack.push(association);
    },

<span id='Ext-ModelManager-method-getModel'>    /**
</span>     * Returns the {@link Ext.data.Model} for a given model name
     * @param {String/Object} id The id of the model or the model instance.
     * @return {Ext.data.Model} a model class.
     */
    getModel: function(id) {
        var model = id;
        if (typeof model == 'string') {
            model = this.types[model];
        }
        return model;
    },

<span id='Ext-ModelManager-method-create'>    /**
</span>     * Creates a new instance of a Model using the given data. Deprecated, instead use Ext.create:
     *
     *     Ext.create('User', {
     *         first: 'Ed',
     *         last: 'Spencer'
     *     });
     *
     * @deprecated 4.1 Use {@link Ext#create Ext.create} instead.
     *
     * @param {Object} data Data to initialize the Model's fields with
     * @param {String} name The name of the model to create
     * @param {Number} id (Optional) unique id of the Model instance (see {@link Ext.data.Model})
     */
    create: function(config, name, id) {
        var Con = typeof name == 'function' ? name : this.types[name || config.name];

        return new Con(config, id);
    }
}, function() {

<span id='Ext-method-regModel'>    /**
</span>     * Old way for creating Model classes.  Instead use:
     *
     *     Ext.define(&quot;MyModel&quot;, {
     *         extend: &quot;Ext.data.Model&quot;,
     *         fields: []
     *     });
     *
     * @param {String} name Name of the Model class.
     * @param {Object} config A configuration object for the Model you wish to create.
     * @return {Ext.data.Model} The newly registered Model
     * @member Ext
     * @deprecated 4.0.0 Use {@link Ext#define} instead.
     */
    Ext.regModel = function() {
        //&lt;debug&gt;
        if (Ext.isDefined(Ext.global.console)) {
            Ext.global.console.warn('Ext.regModel has been deprecated. Models can now be created by extending Ext.data.Model: Ext.define(&quot;MyModel&quot;, {extend: &quot;Ext.data.Model&quot;, fields: []});.');
        }
        //&lt;/debug&gt;
        return this.ModelManager.registerType.apply(this.ModelManager, arguments);
    };
});
</pre>
</body>
</html>