Hi Paul,
>>
I have created various client side component extensions. I now need to
retrieve an Image from the client side components. this will be used as a
print screen or to display in a seperate screen as a preview.
For this reason I would like to call a client side method which will
return an Image. I have seen documentation on calling client side methods,
but none for calling methids that return a value. How do I do this?
>>
Please see ULC Extension Guide. You can use invokeUI (call client method
from server) and invokeULC (call server method from client). Both of these
methods take Object [] as parameter in which you can put the values you
want to exchange.
In your case to send value from client to server, in your client side
proxy you can put a call back to server:
On client proxy MyUIWidget:
public void clientSideMethod(...) {
Type value = getValueToBeSentToServer();
invokeULC("serverSideMethod", new Object[]{ value });
}
On server proxy MyULCWidget:
public void serverSideMethod(Type value) {
//Process value here.
}
button.addActionListener(new IActionListener() {
public void actionPerformed(ActionEvent event) {
myULCWidge.invokeUI("clientSideMethod", new Object[]{ arg objects
here });
}
});
Note that Type should be serializable i.e. it should have a Coder (see
IStreamCoder and the ULC Extension Guide).
Thanks and regards,
Janak
-----------------------------------------
Janak Mulani
email: [email protected]
url: http://www.canoo.com <http://www.canoo.com/>
Beyond AJAX - Java Rich Internet Applications
http://www.canoo.com/ulc
-----------------------------------------
________________________________
From: [email protected]
[mailto:[email protected]] On Behalf Of Paul Harrison
Sent: Monday, April 20, 2009 2:51 PM
To: [email protected]
Subject: [ULC-developer] Retrieving vaues from a client side
component.
Hi
I have created various client side component extensions. I now
need to retrieve an Image from the client side components. this will be
used as a print screen or to display in a seperate screen as a preview. I
have the code that can generate an Image from an AWT component but
obviously this has the be done on the client side. For this reason I would
like to call a client side method which will return an Image. I have seen
documentation on calling client side methods, but none for calling methids
that return a value. How do I do this?
Paul
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