Properties Methods Events Config Options Direct Link

    Observable
      DataProxy
        MemoryProxy

# Class Ext.data.MemoryProxy

Package: | Ext.data
Defined In: | MemoryProxy.js
Class: | MemoryProxy
Extends: | DataProxy

An implementation of Ext.data.DataProxy that simply passes the data specified in its constructor to the Reader when its load method is called.

## Config Options

Config Options | Defined By
--- | ---
| listeners : Object (optional) A config object containing one or more event handlers to be added to this object during initialization. Th... (optional) A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once. | Observable

## Public Properties

This class has no public properties.

## Public Methods

Method | Defined By
--- | ---
| MemoryProxy( `Object data` ) Parameters: `data` : Object The data object which the Reader uses to construct a block of Ext.data.Records. Returns: `` | MemoryProxy
| addEvents( `Object object` ) : void Used to define events on this Observable Used to define events on this Observable Parameters: `object` : Object The object with the events defined Returns: `void` | Observable
- | addListener( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this component Appends an event handler to this component Parameters: `eventName` : String The type of event to listen for `handler` : Function The method the event invokes `scope` : Object (optional) The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event. `options` : Object (optional) An object containing handler configuration properties. This may contain any of the following properties: scope : Object The scope (`this` reference) in which the handler function is executed. If omitted, defaults to the object which fired the event. delay : Number The number of milliseconds to delay the invocation of the handler after the event fires. single : Boolean True to add a handler to handle just the next firing of the event, and then remove itself. buffer : Number Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place. target : Observable Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable. Combining Options Using the options argument, it is possible to combine different types of listeners: A delayed, one-time listener.
      myDataView.on('click', this.onClick, this, {
          single: true,
          delay: 100
      });
  Attaching multiple handlers in 1 call The method also allows for a single argument to be passed which is a config object containing properties which specify multiple handlers.
      myGridPanel.on({
          'click' : {
              fn: this.onClick,
              scope: this,
              delay: 100
          },
          'mouseover' : {
              fn: this.onMouseOver,
              scope: this
          },
          'mouseout' : {
              fn: this.onMouseOut,
              scope: this
          }
      });
  Or a shorthand syntax:
      myGridPanel.on({
          'click' : this.onClick,
          'mouseover' : this.onMouseOver,
          'mouseout' : this.onMouseOut,
           scope: this
      });
Returns: `void` | Observable
| destroy() : void Destroys the proxy by purging any event listeners and cancelling any active requests. Destroys the proxy by purging any event listeners and cancelling any active requests. Parameters: None. Returns: `void` | DataProxy
| fireEvent( `String eventName`, `Object... args` ) : Boolean Fires the specified event with the passed parameters (minus the event name). Fires the specified event with the passed parameters (minus the event name). Parameters: `eventName` : String `args` : Object... Variable number of parameters are passed to handlers Returns: `Boolean` returns false if any of the handlers return false otherwise it returns true | Observable
| hasListener( `String eventName` ) : Boolean Checks to see if this object has any listeners for a specified event Checks to see if this object has any listeners for a specified event Parameters: `eventName` : String The name of the event to check for Returns: `Boolean` True if the event is being listened for, else false | Observable
| load( `Object params`, `Ext.data.DataReader reader`, `Function callback`, `Object scope`, `Object arg` ) : void Load data from the requested source (in this case an in-memory data object passed to the constructor), read the data... Load data from the requested source (in this case an in-memory data object passed to the constructor), read the data object into a block of Ext.data.Records using the passed Ext.data.DataReader implementation, and process that block using the passed callback. Parameters: `params` : Object This parameter is not used by the MemoryProxy class. `reader` : Ext.data.DataReader The Reader object which converts the data object into a block of Ext.data.Records. `callback` : Function The function into which to pass the block of Ext.data.records. The function must be passed The Record block object The "arg" argument from the load function A boolean success indicator `scope` : Object The scope in which to call the callback `arg` : Object An optional argument which is passed to the callback as its second parameter. Returns: `void` | MemoryProxy
| on( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this element (shorthand for addListener) Appends an event handler to this element (shorthand for addListener) Parameters: `eventName` : String The type of event to listen for `handler` : Function The method the event invokes `scope` : Object (optional) The scope in which to execute the handler function. The handler function's "this" context. `options` : Object (optional) Returns: `void` | Observable
| purgeListeners() : void Removes all listeners for this object Removes all listeners for this object Parameters: None. Returns: `void` | Observable
| relayEvents( `Object o`, `Array events` ) : void Relays selected events from the specified Observable as if the events were fired by `this`. Relays selected events from the specified Observable as if the events were fired by `this`. Parameters: `o` : Object The Observable whose events this object is to relay. `events` : Array Array of event names to relay. Returns: `void` | Observable
| removeListener( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes a listener Removes a listener Parameters: `eventName` : String The type of event to listen for `handler` : Function The handler to remove `scope` : Object (optional) The scope (this object) for the handler Returns: `void` | Observable
| resumeEvents() : void Resume firing events. (see suspendEvents) Resume firing events. (see suspendEvents) Parameters: None. Returns: `void` | Observable
| suspendEvents() : void Suspend the firing of all events. (see resumeEvents) Suspend the firing of all events. (see resumeEvents) Parameters: None. Returns: `void` | Observable
| un( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes a listener (shorthand for removeListener) Removes a listener (shorthand for removeListener) Parameters: `eventName` : String The type of event to listen for `handler` : Function The handler to remove `scope` : Object (optional) The scope (this object) for the handler Returns: `void` | Observable

## Public Events

Event | Defined By
--- | ---
| beforeload : ( `Object this`, `Object params` ) Fires before a network request is made to retrieve a data object. Fires before a network request is made to retrieve a data object. Listeners will be called with the following arguments: `this` : Object `params` : Object The params object passed to the load function | DataProxy
| load : ( `Object this`, `Object o`, `Object arg` ) Fires before the load method's callback is called. Fires before the load method's callback is called. Listeners will be called with the following arguments: `this` : Object `o` : Object The data object `arg` : Object The callback's arg object passed to the load function | DataProxy
| loadexception : ( `Object this`, `Object arg`, `Object null`, `Error e` ) Fires if an exception occurs in the Proxy during data loading. Note that this event is also relayed through Ext.data... Fires if an exception occurs in the Proxy during data loading. Note that this event is also relayed through Ext.data.Store, so you can listen for it directly on any Store instance. Listeners will be called with the following arguments: `this` : Object `arg` : Object The callback's arg object passed to the load function `null` : Object This parameter does not apply and will always be null for MemoryProxy `e` : Error The JavaScript Error object caught if the configured Reader could not read the data | MemoryProxy