[Seaside] WAFileUpload how to detect cancel button ?

[Tim Murray]

I am developing a simple wrapper component for WAFileUpload using the
MessageComponent from the Hasso Plattner Institut tutorial

http://www.hpi.uni-potsdam.de/hirschfeld/seaside/tutorial?_k=sWiGcVpX&_s
=HrNNOMUHflechvBG

 

The idea is to display messages to the user to give them hints on how to
use it.

 

For example, when the component is first loaded, I display "Click The
'Choose File' Button To Select A File To Upload"

After the user selects a file, I display ""Click The 'Upload File'
Button To Upload Your File"

After the File uploads, I display "File Uploaded"

 

Simple works fine.

 

Here is the renderContentOn: html

renderContentOn: html

            html div

                        id:'message';

                        class: self messageType, 'Message';

                        with: self messageString.

                        html form

                                    multipart;

                                    with: [

                                                html fileUpload 

                                                            callback: [
:newfile | fileToUpload:=newfile] ;

                                                            onClick:
((html jQuery: '#message') text: 'Click ''Upload File'' to upload') .


                                                html  submitButton

 
callback:[self handleUpload];

                                                            value:
'Upload File'.

                                     ]

 

However, if the user clicks "Cancel" on the file selector popup that is
displayed, I would like to change my info message accordingly.

 

Anybody have an idea how to do that?

 

Thx,

t.

 

 

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