Hi Derrell,
I tried your first choise with;
var form = this.setUserData("form", form) = new
firstQxApp.UploadForm('uploadFrm','/uploads/upload.php');
and
var response = this.getUserData("form").getIframeHtmlContent();
But know after generate.py source and build I will get this error:
invalid assignment left-hand side
var form = this.setUserData("for...('uploadFrm','/uploads/upload.php');
BUT, let us make it easier for testing:
I now tried to call the "getTableData" function in the addListener.
form.addListener('completed',function(e) {
this.getTableData();
}, this);
In the FB Console I can see the result which seems ok.
But the function run in an exception.
Error while receiving table data: TypeError this.tableModel is undefined
getTableData : function(){
var req = new qx.io.remote.Request(
"http://localhost/PA/mobilewebjobticket/getUserUploadFile.php";,
"GET",
"application/json");
req.addListener("completed", function(e) {
try
{
var content = e.getContent();
if (content.length > 0) {
this.tableModel.setData(content);
}//if
}
catch (e)
{
alert("Error while receiving table data: " +
e.toString());
}
}, this);
//req.setParameter("UserID", MyParam);
req.setParameter("UserID", 3);
req.send();
},
I assume this is the same problem ?
best regards
Hansjoerg
2010/3/8 Derrell Lipman <[email protected]>
> On Mon, Mar 8, 2010 at 02:26, Qoodary <[email protected]> wrote:
>
>>
>> Hi Derrell, Hi list,
>> thank you very much for your help,
>>
>> I tried to add the the third parameter "this" to the addListener function.
>>
>> form.addListener('completed',function(e) {
>> this.debug('completed');
>> file.setFieldValue('');
>> var response = this.getIframeHtmlContent();
>> this.debug(response);
>> ////////////////////////////////////////////////////////////////
>> this.getTableData();
>> ///////////////////////////////////////////////////////////////////
>> wm1.close();
>> }, this);
>>
>> But now I get the error message;
>> this.getIframeHtmlContent is not a function
>>
>> I do not know how to change the code that both function will work?
>>
>
> Ah, sorry, I hadn't noticed that you were also accessing methods of the
> form.
>
> You have a couple of choices:
>
> Choice 1.
>
> In addition to assigning the form instance to a local variable as you're
> doing here:
>
> var form = new firstQxApp.UploadForm('uploadFrm','/uploads/upload.php');
>
> assign it to a member variable of your application object as well:
>
> var form = this.setUserData("form", form) = new
> firstQxApp.UploadForm('uploadFrm','/uploads/upload.php');
>
> Then, in your listener handler you can use:
>
> var response = this.getUserData("form").getIframeHtmlContent();
>
> Choice 2.
>
> JavaScript has a concept of "closures" which allow a variable defined in
> one scope to retain its value in another scope even if the first scope goes
> away. If you're not familiar with closures, it's worth reading up on, as
> it's a powerful feature (and one that can be easily misused and cause memory
> leaks if used improperly).
>
> In this case, since the 'form' variable is active at the time that you
> define your listener, i.e. it references a firstQxApp.UploadForm object, you
> can reference that variable inside of your handler. Even if the outer scope
> in which the 'form' variable is used were to go away (which it doesn't, in
> your application), the use inside of your handler would retain its value.
> You can therefore simply change
>
> this.getIframeHtmlContent()
>
> to
>
> form.getIframeHtmloContent()
>
> and that 'form' object will be the one initialized prior to creation of
> your handler. This is the easiest solution, and a perfectly valid one, but
> if you're going to use closures, it's really worth reading up on them to
> know their pit-falls.
>
> Cheers,
>
> Derrell
>
>
>
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