Web Dynpro for ABAP(1):Web Dynpro结构

Web Dynpro for ABAP

1Web Dynpro结构

Web Dynpro Component:View,Web Dynpro Window,Controller。

 Web Component可以嵌入其他Web Component

 

1.1View

每个Web Dynpro Application至少有一个View;

View中可以嵌入多种Element视图元素;

 

View拥有自己的Context,Controller。Context用来存储页面使用者看到和交互使用的数据。

 

View Set,多个View嵌入虚拟Layout

 

Plugs and Navigation Links

View之间跳转使用Plugs；

Plugs分为inbound and outbound plugs

 

 

1.2Web Dynpro Window

Window至少包含一个View;

View之间通过Navigation Link跳转；

 

Interface View

Window可以连结到Web Dynpro application，所以Window可以通过URL调用访问到。

 

 

1.3 Controller

Controllers are the active parts of a Web Dynpro application;

View Controller处理用户在View上的动作；

View Context包含View上的数据；

 

Web Dynpro Component Controller结构：

 

Interface Controller每个Web Dynpro Component只有一个；

Controller控制逻辑位置：Event Handler,Methods,Supply Functions;

 

Context: The data used in the component or in the view is stored in the context；

Context结构：

 

Context参数：Cardinality

Cardinality	Meaning
1:1	The node contains only one element instance, which is instantiated automatically.
0:1	The node contains only one element instance, which must not be instantiated.
1:n	The node can contain multiple element instances, of which at least one must always be instantiated (and is instantiated automatically).
0:n	The node can contain multiple element instances, of which none have to be instantiated.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Context参数：lead selection；

Context参数：Automatic/Manual Initialization；

Context参数：Singleton Property

 

Data Binding and Mapping

1.Component Controller的Context可以映射到View的Context;

 

2.Binding a UI Element to a Context Attribute;

 

Event

The component controller allows you to create events.

Inbound Plugs类似于Event;

 

Action

 

UI Element可以有自己Event;

 

1.4 Interfaces of Web Dynpro Components

 

1.5 Web Dynpro Application

 

 

 

2Web Dynpro Application Demo

Package:SWDP_DEMO_TUTORIALS