Web Dynpro ABAP: Toolbar in ALV

18 Pages·2011·0.44 MB·English

Web Dynpro ABAP: Toolbar in ALV
Applies to:
SAP ECC 6.0. For more information, visit the Web Dynpro ABAP homepage.
Summary
The article elaborates the use of button in ALV toolbar. Functionality of the button in toolbar is to display the
details in popup window based on selected line.
Author: J.Jayanthi
Company: Siemens IT Solutions and Services Pvt. Ltd.
Created on: 03 November 2010
Author Bio
J.Jayanthi is a Certified ABAP consultant with HR ABAP knowledge.

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Web Dynpro ABAP: Toolbar in ALV
Table of Contents
ALV in Web Dynpro ABAP .................................................................................................................................. 3
Prerequisites ....................................................................................................................................................... 3
Goal…………. ..................................................................................................................................................... 3
Creating Web Dynpro ...................................................................................................................................... 3
Component Controller ..................................................................................................................................... 4
View…………….. ............................................................................................................................................ 6
Step 1: ........................................................................................................................................................... 10
Step 2: ........................................................................................................................................................... 10
Step 3: ........................................................................................................................................................... 10
Step 4: ........................................................................................................................................................... 10
Step 5: ........................................................................................................................................................... 11
Step 6: ........................................................................................................................................................... 11
Step 7: ........................................................................................................................................................... 11
Component Usages ...................................................................................................................................... 11
Embedding View ........................................................................................................................................... 12
Handling the Button Action ........................................................................................................................... 13
Creating Web Dynpro Application ................................................................................................................. 14
Code. ............................................................................................................................................................. 14
Output………… ................................................................................................................................................. 16
Related Content ................................................................................................................................................ 17
Disclaimer and Liability Notice .......................................................................................................................... 18

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Web Dynpro ABAP: Toolbar in ALV
ALV in Web Dynpro ABAP
Normally ABAP Consultants will create the toolbar button in ALV programmatically. We are going to see how
to display button in ALV toolbar using Webdynpro ABAP and how and where to write the functionality of the
button.
Prerequisites
Component
The component is the central, reusable unit of the application project. You can create any number of views in
a component and arrange them in any number of windows.

Component Usages
Web Dynpro components can be nested. This means that you can integrate any number of other, already
existing components into a component.

View
The view is the smallest unit of a Web Dynpro application visible for the user. The layout elements and dialog
elements - for example, tables, text fields, or buttons - required for the application are arranged in a view.
The view contains a controller and a controller context in which the application data to be processed is stored
in a hierarchical structure. This allows the linking of the graphical elements with the application data.

Window
A window is used to group multiple views and to specify the navigation between the views. A view can only
displayed by the browser if the view is embedded in a window.

Singleton
The property "Singleton" specifies the number of instances that can exist in a dependent context node (that
does not belong directly to the root node). If the property "Singleton" is set, exactly one instance of the node
exists. Its content changes when the lead selection of the parent node changes. If the property "Singleton" is
not set, one instance per parent instance exists. The content of the instances does not change when the lead
selection of the parent changes.
Supply Function
We can specify the name of a method which we can use to fill the context node at runtime in supply function.
Goal
In this article, Sales order details will be displayed initially in the main window and based on selected sales
document, toolbar button will display the Sales order item details in popup window.
We are going to use two views one for initial Sales Document display and another one for Popup Window.
We need to use Component SALV_WD_TABLE for ALV display. In POPUP window, table will be used for
diaplying vbeln and posnr. Since we need the item details of the sales order only when the particular sales
document is clicked, we will use supply function.
Creating Web Dynpro
Go to SE80 and select Web Dynpro Comp./Intf. and provide the name(say ZZZ_JAYTEST9) to create. Then
enter the description and choose the type as Web Dynpro Component.
Enter the ALV for component use with component type SALV_WD_TABLE as below in the properties of the
webdynpro ZZZ_JAYTEST9. This will create the component usages by name ALV.
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Web Dynpro ABAP: Toolbar in ALV

Component Controller
Go to Component Controller and Right click the context. Then select Create Node VBAK with dictionary
structure as VBAK. Then select the fields required for display from VBAK table using ADD ATTRIBUTE
FROM STRUCTURE button. In this example, we are selecting VBELN, VKORG, VTWEG and SPART.
Then remove the dictionary structure VBAK from the node VBAK and set other properties of the node VBAK
as below.

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Web Dynpro ABAP: Toolbar in ALV

Create a node VBAP inside the node VBAK and add the attributes VBELN and POSNR from VBAP.
Then set the property of VBAP as below. Create a supply function GET_ITEM.

Here Singleton property is set in VBAP node.
Uncomment the code which appears automatically and keep additionally only the logic for data selection.

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Web Dynpro ABAP: Toolbar in ALV
View
In Layout of the Main view, create ViewContianerUIElement using Insert element by right clicking the
ROOTUIELEMENTCONTAINER.

In properties tab, design the properties as below.

Now in Context, drag and drop VBAK from right side to Left side. Delete the child node VBAP which we don’t
require in Main view. symbol shows it is mapped.

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Web Dynpro ABAP: Toolbar in ALV

Create another view say POPUP.
In the context tab, Drag and Drop only the child node VBAP to the view from component controller.

In the layout tab of POPUP view, Insert an element(say T1) Table. Set the datasource property as below.

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Web Dynpro ABAP: Toolbar in ALV

Then right click T1 and select Create Binding.

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Web Dynpro ABAP: Toolbar in ALV
Bind the elements as below.

Now the layout will appear as below.

Select the method WDDOINIT (For Main View) in methods tab.
Use Web Dynpro code wizard to generate code automatically.
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Web Dynpro ABAP: Toolbar in ALV

Step 1:
Choose the radio button Read context for the node MAKT.

Keep the below generated code and delete the rest which is not required.

Step 2:
Then select the data by the below logic.

Step 3:
Then bind the table.

Step 4:
Instantiate Used Component ALV.

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