DataBus (Mapway GWT Common 1.0.0 API)

java.lang.Object
- cn.mapway.ui.client.tools.DataBus

```
public class DataBus
extends Object
```
Databus 全局的数据总线组件核模块可以订阅或者浏览器页面是一个应用程序代码这个应用和MQTT服务器之间只有两个连接 1.个人消息 /ai/userid/# 2.系统消息 /ai/system/# 各种应用消息都通过这一个连接进行 MQTT会将接受的消息转发到这个数据总线上，由数据总线进行转发

Author:

zhangjianshe@gmail.com

Field Summary

Fields
Modifier and Type Field Description

static String TOPIC_UI_THEME_CHANGED

Constructor Summary

Constructors
Modifier Constructor Description

protected DataBus()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`back()`	像总线发送返回上个页面请求
`void`	`fire(String topic, int type, Object event)`
`static DataBus`	`get()`	全局数据总线
`EventBus`	`getEventBus()`
`void`	`message(String message)`
`void`	`register(String topic, IEventHandler handler)`	注册事件
`void`	`switchModule(SwitchModuleData data)`
`void`	`unregister(String topic, IEventHandler handler)`	撤销对事件的监听

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- TOPIC_UI_THEME_CHANGED
```
public static final String TOPIC_UI_THEME_CHANGED
```
  See Also:
  
  Constant Field Values

Constructor Detail
- DataBus
```
protected DataBus()
```

Method Detail

get
```
public static DataBus get()
```
全局数据总线

Returns:

register

public void register(String topic,
                     IEventHandler handler)

注册事件

Parameters:: topic -; handler -

unregister

public void unregister(String topic,
                       IEventHandler handler)

撤销对事件的监听

Parameters:: topic -; handler -

fire

public void fire(String topic,
                 int type,
                 Object event)

getEventBus
```
public EventBus getEventBus()
```

switchModule

public void switchModule(SwitchModuleData data)

message

public void message(String message)

back
```
public void back()
```
像总线发送返回上个页面请求