MessagePort (GWT 2.7.0)

All Superinterfaces:

EventTarget

All Known Implementing Classes:

JsMessagePort
```
public interface MessagePort
extends EventTarget
```
dom/interfaces/threads/nsIDOMWorkers.idlScriptable
This interface represents a worker thread's message port, which is used to allow the worker to post messages back to its creator.
1.0
11.0
Introduced
Gecko 1.9.1

Inherits from: nsISupports Last changed in Gecko 1.9.1 (Firefox 3.5 / Thunderbird 3.0 / SeaMonkey 2.0)

Method Summary

Methods
Modifier and Type	Method and Description
`EventRemover`	`addEventListener(String type, EventListener listener)` Register an event handler of a specific event type on the `EventTarget`.
`EventRemover`	`addEventListener(String type, EventListener listener, boolean useCapture)` Register an event handler of a specific event type on the `EventTarget`.
`void`	`close()`
`boolean`	`dispatchEvent(Event evt)` Dispatch an event to this `EventTarget`.
`EventListener`	`getOnmessage()`
`void`	`postMessage(String message)` Posts a message into the event queue.
`void`	`postMessage(String message, Indexable messagePorts)` Posts a message into the event queue.
`void`	`removeEventListener(String type, EventListener listener)` Removes an event listener from the `EventTarget`.
`void`	`removeEventListener(String type, EventListener listener, boolean useCapture)` Removes an event listener from the `EventTarget`.
`void`	`setOnmessage(EventListener arg)`
`void`	`start()`
`void`	`webkitPostMessage(String message)`
`void`	`webkitPostMessage(String message, Indexable transfer)`

- Method Detail
  - getOnmessage
```
EventListener getOnmessage()
```
  - setOnmessage
```
void setOnmessage(EventListener arg)
```
  - addEventListener
```
EventRemover addEventListener(String type,
                            EventListener listener)
```
    Description copied from interface: EventTarget
    
    Register an event handler of a specific event type on the EventTarget.
    
    Specified by:
    
    addEventListener in interface EventTarget
  - addEventListener
```
EventRemover addEventListener(String type,
                            EventListener listener,
                            boolean useCapture)
```
    Description copied from interface: EventTarget
    
    Register an event handler of a specific event type on the EventTarget.
    
    Specified by:
    
    addEventListener in interface EventTarget
  - close
```
void close()
```
  - dispatchEvent
```
boolean dispatchEvent(Event evt)
```
    Description copied from interface: EventTarget
    
    Dispatch an event to this EventTarget.
    
    Specified by:
    
    dispatchEvent in interface EventTarget
  - postMessage
```
void postMessage(String message)
```
    Posts a message into the event queue.
    
    Parameters
    
    aMessage
    
    The message to post.
  - postMessage
```
void postMessage(String message,
               Indexable messagePorts)
```
    Posts a message into the event queue.
    
    Parameters
    
    aMessage
    
    The message to post.
  - removeEventListener
```
void removeEventListener(String type,
                       EventListener listener)
```
    Description copied from interface: EventTarget
    
    Removes an event listener from the EventTarget.
    
    Specified by:
    
    removeEventListener in interface EventTarget
  - removeEventListener
```
void removeEventListener(String type,
                       EventListener listener,
                       boolean useCapture)
```
    Description copied from interface: EventTarget
    
    Removes an event listener from the EventTarget.
    
    Specified by:
    
    removeEventListener in interface EventTarget
  - start
```
void start()
```
  - webkitPostMessage
```
void webkitPostMessage(String message)
```
  - webkitPostMessage
```
void webkitPostMessage(String message,
                     Indexable transfer)
```

Interface MessagePort

Method Summary

Method Detail

getOnmessage

setOnmessage

addEventListener

addEventListener

close

dispatchEvent

postMessage

Parameters

postMessage

Parameters

removeEventListener

removeEventListener

start

webkitPostMessage

webkitPostMessage