Dynamic UIElement Generation at Runtime

[andre_becker]

Hi everybody,

My problem is, that I want to create a number of elements at runtime. The number depends on the records in the database. So when I got 30 records in my database. I want to create 30 elements. So far, so good.

The connection through the WebServices works very well.

Now I got my problems with display the elements. I want to use the tray element.

Now my Code looks like this:

//... much code before! :-)

//here you get the number of affected rows
length = req.getResponse().getResultAsArray().length;
    
    
//dynamically create trays, after the number of selected rows
for (int i = 0; i < length; i++) 
{
IWDTransparentContainer transparent = (IWDTransparentContainer) view.createElement(IWDTransparentContainer.class, "TC."+i);
IWDTray tray = (IWDTray) view.createElement(IWDTray.class, "tray."+i);

//I don't want any more options at the moment ;-)
tray.setEnabled(true);
tray.setExpanded(false);
		
transparent.addChild(textView);
transparent.addChild(tray);
}

So but nothing is shown on the screen.

Now there exists the method setVisible(), I think this is the key to solve my problem. But this method expects a WDVisibility parameter and I don't know what I must type in.

I tried it with com.sap.ide.webdynpro.uielemtdefinitions.Visibility, it doesn't work.

Then I created a context attribute with this type!

doesn't work, too.

My you can help me?

Kind Regards,

Andre

[Former Member · Accepted solution]

Hi,

for (int i = 0; i < length; i++)

{

<b>IWDTransparentContainer container = (IWDTransparentContainer)view.getElement("RootUIElementContainer");</b>

IWDTransparentContainer transparent = (IWDTransparentContainer) view.createElement(IWDTransparentContainer.class, "TC."+i);

IWDTray tray = (IWDTray) view.createElement(IWDTray.class, "tray."+i);

//I don't want any more options at the moment

tray.setEnabled(true);

tray.setExpanded(false);

transparent.addChild(textView);

transparent.addChild(tray);

<b>container.addChild(transparent);</b>

}

Hope it helps,

Regards,

Nagarajan.

Message was edited by: Nagarajan Kumarappan

[andre_becker]

Now it works. ;-D

Thanks for your help, Maksim & Nagarajan!

Kind regards & thanks a lot!

Andre

[Former Member]

WARNING: Never use "." inside UI element IDs!

This will definitely cause errors!

To create unique IDs automatically, simply pass NULL to IWDView.createElement(Class, String) as described in the Javadoc.

Armin

[Former Member]

Hi Armin,

You are Right ,I faced lot of porblems using ids.

Best Suggestion is to use null , in place of ids.

regards,

Naga Raju.

[andre_becker]

And how can I add the IWDTransparentContainer to the standard RootUIContainer?

Thanks for help!

Kind regards,

Andre

edit:

Ohh, we postet at the same time

Message was edited by: Andre Becker

[former_member182372]

((IWDTransparentContainer)view.getRootElement()).addChild(transparent);

[former_member182372]

Hi Andre,

Did you add <i>transparent</i> to RootUIElementContainer?

Best regards, Maksim Rashchynski.