Home » Eclipse Projects » Remote Application Platform (RAP) » observe when user hit the browser refresh button
| observe when user hit the browser refresh button [message #117627] |
Tue, 06 January 2009 09:15  |
Eclipse User |
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Hi,
I have a little problem.
I'm using a background thread to update some data from a server every 20
seconds.
The user can start and stop the update manually.
But when this update is running and the user is pressing the refresh
button of the browser, I get an SWTException: Invalid thread access.
Is there any possibility to observe when user hit the browser refresh
button, so that I can first stop this update???
Roland
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| Re: observe when user hit the browser refresh button [message #117640 is a reply to message #117627] |
Tue, 06 January 2009 09:47  |
| Eclipse User |
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Originally posted by: benjamin.wolff.web.de
Hi Roland,
the problem is that there doesn't seem to be a reliable way to notice when the user leaves the page or closes the browser.
the method postWindowClose() is not called in this case. this is a problem for me, because i have to rely on the tomcat
session timeout to close the ressources (database etc.). the postWindowClose() is only called when the User uses a logout or
exit action. it is possible to specify a exitconfirmation when the user leaves the page or closes the browser, but this is realised
with a simple javascript function that pops up a dialog with a string. if there is, or will be, any way to bind a method call, upon leaving the
browser, via javascript i'd really love to hear it :).
if the session is destroyed upon refreshing the page you could hook an listener on the session and use the method beforeDestroy() to cancel running
jobs...
greetings,
ben
Roland Siebert schrieb:
> Hi,
>
> I have a little problem.
> I'm using a background thread to update some data from a server every 20
> seconds.
>
> The user can start and stop the update manually.
> But when this update is running and the user is pressing the refresh
> button of the browser, I get an SWTException: Invalid thread access.
>
> Is there any possibility to observe when user hit the browser refresh
> button, so that I can first stop this update???
>
> Roland
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| Re: observe when user hit the browser refresh button [message #117650 is a reply to message #117640] |
Tue, 06 January 2009 11:08 |
| Eclipse User |
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Hmm,
I tried out the method postWindowClose() and it will be called when I
hit the refresh button.
Roland
Ben W. schrieb:
> Hi Roland,
>
> the problem is that there doesn't seem to be a reliable way to notice
> when the user leaves the page or closes the browser.
> the method postWindowClose() is not called in this case. this is a
> problem for me, because i have to rely on the tomcat
> session timeout to close the ressources (database etc.). the
> postWindowClose() is only called when the User uses a logout or
> exit action. it is possible to specify a exitconfirmation when the user
> leaves the page or closes the browser, but this is realised
> with a simple javascript function that pops up a dialog with a string.
> if there is, or will be, any way to bind a method call, upon leaving the
> browser, via javascript i'd really love to hear it :).
>
> if the session is destroyed upon refreshing the page you could hook an
> listener on the session and use the method beforeDestroy() to cancel
> running
> jobs...
>
> greetings,
> ben
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| Re: observe when user hit the browser refresh button [message #117661 is a reply to message #117650] |
Tue, 06 January 2009 11:50 |
| Eclipse User |
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Originally posted by: benjamin.wolff.web.de
hi,
could you please check if the method is also called when closing the browser (X) or leaving the url?
greetings,
ben
Roland Siebert schrieb:
> Hmm,
>
> I tried out the method postWindowClose() and it will be called when I
> hit the refresh button.
>
> Roland
>
> Ben W. schrieb:
>> Hi Roland,
>>
>> the problem is that there doesn't seem to be a reliable way to notice
>> when the user leaves the page or closes the browser.
>> the method postWindowClose() is not called in this case. this is a
>> problem for me, because i have to rely on the tomcat
>> session timeout to close the ressources (database etc.). the
>> postWindowClose() is only called when the User uses a logout or
>> exit action. it is possible to specify a exitconfirmation when the
>> user leaves the page or closes the browser, but this is realised
>> with a simple javascript function that pops up a dialog with a string.
>> if there is, or will be, any way to bind a method call, upon leaving the
>> browser, via javascript i'd really love to hear it :).
>>
>> if the session is destroyed upon refreshing the page you could hook an
>> listener on the session and use the method beforeDestroy() to cancel
>> running
>> jobs...
>>
>> greetings,
>> ben
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| Re: observe when user hit the browser refresh button [message #117777 is a reply to message #117661] |
Wed, 07 January 2009 05:44 |
| Eclipse User |
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Hi,
yes, it will be called when you reload the page, close the browser,
close the tab and also when you type another url.
Roland
Ben W. schrieb:
> hi,
>
> could you please check if the method is also called when closing the
> browser (X) or leaving the url?
>
> greetings,
> ben
>
>
> Roland Siebert schrieb:
>> Hmm,
>>
>> I tried out the method postWindowClose() and it will be called when I
>> hit the refresh button.
>>
>> Roland
>>
>> Ben W. schrieb:
>>> Hi Roland,
>>>
>>> the problem is that there doesn't seem to be a reliable way to notice
>>> when the user leaves the page or closes the browser.
>>> the method postWindowClose() is not called in this case. this is a
>>> problem for me, because i have to rely on the tomcat
>>> session timeout to close the ressources (database etc.). the
>>> postWindowClose() is only called when the User uses a logout or
>>> exit action. it is possible to specify a exitconfirmation when the
>>> user leaves the page or closes the browser, but this is realised
>>> with a simple javascript function that pops up a dialog with a
>>> string. if there is, or will be, any way to bind a method call, upon
>>> leaving the
>>> browser, via javascript i'd really love to hear it :).
>>>
>>> if the session is destroyed upon refreshing the page you could hook
>>> an listener on the session and use the method beforeDestroy() to
>>> cancel running
>>> jobs...
>>>
>>> greetings,
>>> ben
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| Re: observe when user hit the browser refresh button [message #117811 is a reply to message #117800] |
Wed, 07 January 2009 07:41 |
| Eclipse User |
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Just a note of clarification, there are reliable mechanisms to
observe *whenever* a session terminates (e.g. ISessionStoreListener,
postWindowClose). However, closing the browser window or tab does
*not* terminate the session. The session is terminated after the
session-timeout has elapsed without any request being sent to the
session.
In RAP, this behavior hasn't changed since ever.
HTH
Rüdiger
Ben W. wrote:
> Hi,
>
>
> i've tested this by launching the app from eclipse and launching
> deployed on a tomcat.
> using firefox, it seems that the mechanism works fine now, the method is
> called when leaving
> the url or closing the browser, almost always. With Internet Explorer it
> doesn't seem to work
> very reliable but the method is also called many times.
>
> this is a very pleasant change because this didn't work so reliably in
> the past which gave
> me some problems.
>
> very nice!!!
>
>
> greetings
> ben
>
>
>
> stefan.hansel@tolina.de schrieb:
>>>> yes, it will be called when you reload the page, close the browser,
>>>> close the tab and also when you type another url.
>>
>> Is this a new feature ? Some time ago exactly that didn't work (at
>> least not when closing the browser) and I can't remember having read
>> something about this in the release notes ?
>> That would be really great indeed, if that worked now !
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| Re: observe when user hit the browser refresh button [message #117822 is a reply to message #117811] |
Wed, 07 January 2009 08:01 |
| Eclipse User |
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Originally posted by: benjamin.wolff.web.de
Hi Rüdiger,
i use the postWindowClose() method to close the session immediately (set the timeout on 1 second programmatically), the
ISessionStoreListener always worked fine, that's right.
Greetings,
ben
Rüdiger Herrmann schrieb:
> Just a note of clarification, there are reliable mechanisms to observe
> *whenever* a session terminates (e.g. ISessionStoreListener,
> postWindowClose). However, closing the browser window or tab does *not*
> terminate the session. The session is terminated after the
> session-timeout has elapsed without any request being sent to the session.
> In RAP, this behavior hasn't changed since ever.
>
> HTH
> Rüdiger
>
>
> Ben W. wrote:
>> Hi,
>>
>>
>> i've tested this by launching the app from eclipse and launching
>> deployed on a tomcat.
>> using firefox, it seems that the mechanism works fine now, the method
>> is called when leaving
>> the url or closing the browser, almost always. With Internet Explorer
>> it doesn't seem to work
>> very reliable but the method is also called many times.
>>
>> this is a very pleasant change because this didn't work so reliably in
>> the past which gave
>> me some problems.
>>
>> very nice!!!
>>
>>
>> greetings
>> ben
>>
>>
>>
>> stefan.hansel@tolina.de schrieb:
>>>>> yes, it will be called when you reload the page, close the browser,
>>>>> close the tab and also when you type another url.
>>>
>>> Is this a new feature ? Some time ago exactly that didn't work (at
>>> least not when closing the browser) and I can't remember having read
>>> something about this in the release notes ?
>>> That would be really great indeed, if that worked now !
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| Re: observe when user hit the browser refresh button [message #117846 is a reply to message #117822] |
Wed, 07 January 2009 09:11 |
| Eclipse User |
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Ben,
sorry, my previous post was misleading. Of course the
SessionStoreListener is the only way to stay informed about the end
of a session.
Cheers,
Rüdiger
Ben W. wrote:
> Hi Rüdiger,
>
>
> i use the postWindowClose() method to close the session immediately (set
> the timeout on 1 second programmatically), the
> ISessionStoreListener always worked fine, that's right.
>
>
> Greetings,
> ben
>
>
>
> Rüdiger Herrmann schrieb:
>> Just a note of clarification, there are reliable mechanisms to observe
>> *whenever* a session terminates (e.g. ISessionStoreListener,
>> postWindowClose). However, closing the browser window or tab does
>> *not* terminate the session. The session is terminated after the
>> session-timeout has elapsed without any request being sent to the
>> session.
>> In RAP, this behavior hasn't changed since ever.
>>
>> HTH
>> Rüdiger
>>
>>
>> Ben W. wrote:
>>> Hi,
>>>
>>>
>>> i've tested this by launching the app from eclipse and launching
>>> deployed on a tomcat.
>>> using firefox, it seems that the mechanism works fine now, the method
>>> is called when leaving
>>> the url or closing the browser, almost always. With Internet Explorer
>>> it doesn't seem to work
>>> very reliable but the method is also called many times.
>>>
>>> this is a very pleasant change because this didn't work so reliably
>>> in the past which gave
>>> me some problems.
>>>
>>> very nice!!!
>>>
>>>
>>> greetings
>>> ben
>>>
>>>
>>>
>>> stefan.hansel@tolina.de schrieb:
>>>>>> yes, it will be called when you reload the page, close the
>>>>>> browser, close the tab and also when you type another url.
>>>>
>>>> Is this a new feature ? Some time ago exactly that didn't work (at
>>>> least not when closing the browser) and I can't remember having read
>>>> something about this in the release notes ?
>>>> That would be really great indeed, if that worked now !
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