/*!
 * Ext JS Library 3.2.0
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
/** * @class Ext.data.Record *

Instances of this class encapsulate both Record definition information, and Record * value information for use in {@link Ext.data.Store} objects, or any code which needs * to access Records cached in an {@link Ext.data.Store} object.

*

Constructors for this class are generated by passing an Array of field definition objects to {@link #create}. * Instances are usually only created by {@link Ext.data.Reader} implementations when processing unformatted data * objects.

*

Note that an instance of a Record class may only belong to one {@link Ext.data.Store Store} at a time. * In order to copy data from one Store to another, use the {@link #copy} method to create an exact * copy of the Record, and insert the new instance into the other Store.

*

When serializing a Record for submission to the server, be aware that it contains many private * properties, and also a reference to its owning Store which in turn holds references to its Records. * This means that a whole Record may not be encoded using {@link Ext.util.JSON.encode}. Instead, use the * {@link #data} and {@link #id} properties.

*

Record objects generated by this constructor inherit all the methods of Ext.data.Record listed below.

* @constructor *

This constructor should not be used to create Record objects. Instead, use {@link #create} to * generate a subclass of Ext.data.Record configured with information about its constituent fields.

*

The generated constructor has the same signature as this constructor.

* @param {Object} data (Optional) An object, the properties of which provide values for the new Record's * fields. If not specified the {@link Ext.data.Field#defaultValue defaultValue} * for each field will be assigned. * @param {Object} id (Optional) The id of the Record. The id is used by the * {@link Ext.data.Store} object which owns the Record to index its collection * of Records (therefore this id should be unique within each store). If an * id is not specified a {@link #phantom} * Record will be created with an {@link #Record.id automatically generated id}. */ Ext.data.Record = function(data, id){ // if no id, call the auto id method this.id = (id || id === 0) ? id : Ext.data.Record.id(this); this.data = data || {}; };
/** * Generate a constructor for a specific Record layout. * @param {Array} o An Array of {@link Ext.data.Field Field} definition objects. * The constructor generated by this method may be used to create new Record instances. The data * object must contain properties named after the {@link Ext.data.Field field} * {@link Ext.data.Field#name}s. Example usage:

// create a Record constructor from a description of the fields
var TopicRecord = Ext.data.Record.create([ // creates a subclass of Ext.data.Record
    {{@link Ext.data.Field#name name}: 'title', {@link Ext.data.Field#mapping mapping}: 'topic_title'},
    {name: 'author', mapping: 'username', allowBlank: false},
    {name: 'totalPosts', mapping: 'topic_replies', type: 'int'},
    {name: 'lastPost', mapping: 'post_time', type: 'date'},
    {name: 'lastPoster', mapping: 'user2'},
    {name: 'excerpt', mapping: 'post_text', allowBlank: false},
    // In the simplest case, if no properties other than name are required,
    // a field definition may consist of just a String for the field name.
    'signature'
]);

// create Record instance
var myNewRecord = new TopicRecord(
    {
        title: 'Do my job please',
        author: 'noobie',
        totalPosts: 1,
        lastPost: new Date(),
        lastPoster: 'Animal',
        excerpt: 'No way dude!',
        signature: ''
    },
    id // optionally specify the id of the record otherwise {@link #Record.id one is auto-assigned}
);
myStore.{@link Ext.data.Store#add add}(myNewRecord);
* @method create * @return {Function} A constructor which is used to create new Records according * to the definition. The constructor has the same signature as {@link #Record}. * @static */ Ext.data.Record.create = function(o){ var f = Ext.extend(Ext.data.Record, {}); var p = f.prototype; p.fields = new Ext.util.MixedCollection(false, function(field){ return field.name; }); for(var i = 0, len = o.length; i < len; i++){ p.fields.add(new Ext.data.Field(o[i])); } f.getField = function(name){ return p.fields.get(name); }; return f; }; Ext.data.Record.PREFIX = 'ext-record'; Ext.data.Record.AUTO_ID = 1; Ext.data.Record.EDIT = 'edit'; Ext.data.Record.REJECT = 'reject'; Ext.data.Record.COMMIT = 'commit';
/** * Generates a sequential id. This method is typically called when a record is {@link #create}d * and {@link #Record no id has been specified}. The returned id takes the form: * {PREFIX}-{AUTO_ID}.
* @param {Record} rec The record being created. The record does not exist, it's a {@link #phantom}. * @return {String} auto-generated string id, "ext-record-i++'; */ Ext.data.Record.id = function(rec) { rec.phantom = true; return [Ext.data.Record.PREFIX, '-', Ext.data.Record.AUTO_ID++].join(''); }; Ext.data.Record.prototype = {
/** *

This property is stored in the Record definition's prototype

* A MixedCollection containing the defined {@link Ext.data.Field Field}s for this Record. Read-only. * @property fields * @type Ext.util.MixedCollection */
/** * An object hash representing the data for this Record. Every field name in the Record definition * is represented by a property of that name in this object. Note that unless you specified a field * with {@link Ext.data.Field#name name} "id" in the Record definition, this will not contain * an id property. * @property data * @type {Object} */
/** * The unique ID of the Record {@link #Record as specified at construction time}. * @property id * @type {Object} */
/** *

Only present if this Record was created by an {@link Ext.data.XmlReader XmlReader}.

*

The XML element which was the source of the data for this Record.

* @property node * @type {XMLElement} */
/** *

Only present if this Record was created by an {@link Ext.data.ArrayReader ArrayReader} or a {@link Ext.data.JsonReader JsonReader}.

*

The Array or object which was the source of the data for this Record.

* @property json * @type {Array|Object} */
/** * Readonly flag - true if this Record has been modified. * @type Boolean */ dirty : false, editing : false, error : null,
/** * This object contains a key and value storing the original values of all modified * fields or is null if no fields have been modified. * @property modified * @type {Object} */ modified : null,
/** * true when the record does not yet exist in a server-side database (see * {@link #markDirty}). Any record which has a real database pk set as its id property * is NOT a phantom -- it's real. * @property phantom * @type {Boolean} */ phantom : false, // private join : function(store){
/** * The {@link Ext.data.Store} to which this Record belongs. * @property store * @type {Ext.data.Store} */ this.store = store; },
/** * Set the {@link Ext.data.Field#name named field} to the specified value. For example: *

// record has a field named 'firstname'
var Employee = Ext.data.Record.{@link #create}([
    {name: 'firstname'},
    ...
]);

// update the 2nd record in the store:
var rec = myStore.{@link Ext.data.Store#getAt getAt}(1);

// set the value (shows dirty flag):
rec.set('firstname', 'Betty');

// commit the change (removes dirty flag):
rec.{@link #commit}();

// update the record in the store, bypass setting dirty flag,
// and do not store the change in the {@link Ext.data.Store#getModifiedRecords modified records}
rec.{@link #data}['firstname'] = 'Wilma'; // updates record, but not the view
rec.{@link #commit}(); // updates the view
     * 
* Notes:
* @param {String} name The {@link Ext.data.Field#name name of the field} to set. * @param {String/Object/Array} value The value to set the field to. */ set : function(name, value){ var encode = Ext.isPrimitive(value) ? String : Ext.encode; if(encode(this.data[name]) == encode(value)) { return; } this.dirty = true; if(!this.modified){ this.modified = {}; } if(this.modified[name] === undefined){ this.modified[name] = this.data[name]; } this.data[name] = value; if(!this.editing){ this.afterEdit(); } }, // private afterEdit : function(){ if (this.store != undefined && typeof this.store.afterEdit == "function") { this.store.afterEdit(this); } }, // private afterReject : function(){ if(this.store){ this.store.afterReject(this); } }, // private afterCommit : function(){ if(this.store){ this.store.afterCommit(this); } },
/** * Get the value of the {@link Ext.data.Field#name named field}. * @param {String} name The {@link Ext.data.Field#name name of the field} to get the value of. * @return {Object} The value of the field. */ get : function(name){ return this.data[name]; },
/** * Begin an edit. While in edit mode, no events (e.g.. the update event) * are relayed to the containing store. * See also: {@link #endEdit} and {@link #cancelEdit}. */ beginEdit : function(){ this.editing = true; this.modified = this.modified || {}; },
/** * Cancels all changes made in the current edit operation. */ cancelEdit : function(){ this.editing = false; delete this.modified; },
/** * End an edit. If any data was modified, the containing store is notified * (ie, the store's update event will fire). */ endEdit : function(){ this.editing = false; if(this.dirty){ this.afterEdit(); } },
/** * Usually called by the {@link Ext.data.Store} which owns the Record. * Rejects all changes made to the Record since either creation, or the last commit operation. * Modified fields are reverted to their original values. *

Developers should subscribe to the {@link Ext.data.Store#update} event * to have their code notified of reject operations.

* @param {Boolean} silent (optional) True to skip notification of the owning * store of the change (defaults to false) */ reject : function(silent){ var m = this.modified; for(var n in m){ if(typeof m[n] != "function"){ this.data[n] = m[n]; } } this.dirty = false; delete this.modified; this.editing = false; if(silent !== true){ this.afterReject(); } },
/** * Usually called by the {@link Ext.data.Store} which owns the Record. * Commits all changes made to the Record since either creation, or the last commit operation. *

Developers should subscribe to the {@link Ext.data.Store#update} event * to have their code notified of commit operations.

* @param {Boolean} silent (optional) True to skip notification of the owning * store of the change (defaults to false) */ commit : function(silent){ this.dirty = false; delete this.modified; this.editing = false; if(silent !== true){ this.afterCommit(); } },
/** * Gets a hash of only the fields that have been modified since this Record was created or commited. * @return Object */ getChanges : function(){ var m = this.modified, cs = {}; for(var n in m){ if(m.hasOwnProperty(n)){ cs[n] = this.data[n]; } } return cs; }, // private hasError : function(){ return this.error !== null; }, // private clearError : function(){ this.error = null; },
/** * Creates a copy (clone) of this Record. * @param {String} id (optional) A new Record id, defaults to the id * of the record being copied. See {@link #id}. * To generate a phantom record with a new id use:

var rec = record.copy(); // clone the record
Ext.data.Record.id(rec); // automatically generate a unique sequential id
     * 
* @return {Record} */ copy : function(newId) { return new this.constructor(Ext.apply({}, this.data), newId || this.id); },
/** * Returns true if the passed field name has been {@link #modified} * since the load or last commit. * @param {String} fieldName {@link Ext.data.Field.{@link Ext.data.Field#name} * @return {Boolean} */ isModified : function(fieldName){ return !!(this.modified && this.modified.hasOwnProperty(fieldName)); },
/** * By default returns false if any {@link Ext.data.Field field} within the * record configured with {@link Ext.data.Field#allowBlank} = false returns * true from an {@link Ext}.{@link Ext#isEmpty isempty} test. * @return {Boolean} */ isValid : function() { return this.fields.find(function(f) { return (f.allowBlank === false && Ext.isEmpty(this.data[f.name])) ? true : false; },this) ? false : true; },
/** *

Marks this Record as {@link #dirty}. This method * is used interally when adding {@link #phantom} records to a * {@link Ext.data.Store#writer writer enabled store}.

*

Marking a record {@link #dirty} causes the phantom to * be returned by {@link Ext.data.Store#getModifiedRecords} where it will * have a create action composed for it during {@link Ext.data.Store#save store save} * operations.

*/ markDirty : function(){ this.dirty = true; if(!this.modified){ this.modified = {}; } this.fields.each(function(f) { this.modified[f.name] = this.data[f.name]; },this); } };