R: Re: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information

[francescoboccacci at libero.it]

sorry Andreas, my misunderstanding. I would like to try to manage some 
information about traffic request from the server.
That's all. Thanks for your suggestions.
Francesco

>----Messaggio originale----
>Da: ahocevar at opengeo.org
>Data: 16/02/2012 16.20
>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>Cc: <openlayers-users at lists.osgeo.org>
>Ogg: Re: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>
>You cannot. All I was saying was that the tileloaded event is also
>fired for tiles that come from the cache. Why would you want to know
>which tiles come from the browser cache?
>
>Andreas.
>
>On Thu, Feb 16, 2012 at 4:15 PM, francescoboccacci at libero.it
><francescoboccacci at libero.it> wrote:
>> Hi Adreas, how is possible capture this information?
>>
>> I use this code:
>>
>>
>> layer.events.register("tileloaded", layer, function() {
>>                if (document.getElementsByClassName("olImageLoadError").
>> length) {
>>                       error+=1;
>>                 }
>>    });
>>  By this way i count the number of tiles that aren't loaded. How can 
capture
>> the tiles coming from the  cache?
>>
>> Thanks in advance
>>
>> Francesco
>>
>>
>>>----Messaggio originale----
>>>Da: ahocevar at opengeo.org
>>>Data: 16/02/2012 16.08
>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>Cc: <ramotswa at gmail.com>, <openlayers-users at lists.osgeo.org>
>>>Ogg: Re: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>>>
>>>No, this is not possible. But the tileloaded event will also fire when
>>>the image comes from the cache.
>>>
>>>Andreas.
>>>
>>>On Thu, Feb 16, 2012 at 2:56 PM, francescoboccacci at libero.it
>>><francescoboccacci at libero.it> wrote:
>>>> Good solution.. the last question is:
>>>> i can capture if an error is occurs during the tile loading
>> (olImageLoadError)
>>>> , but is possible to check if the tile is already present in my cache 
(304
>>>> response from server)?
>>>> Thanks again ..
>>>>
>>>> Francesco
>>>>
>>>>>----Messaggio originale----
>>>>>Da: ramotswa at gmail.com
>>>>>Data: 16/02/2012 14.48
>>>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>>>Cc: <bamerbalazs at gmail.com>, <openlayers-users at lists.osgeo.org>
>>>>>Ogg: Re: Re: Re: [OpenLayers-Users] Capture Tile information
>>>>>
>>>>>So if you had an OSM layer.
>>>>>
>>>>>Register an event on tileloaded on it
>>>>> OSMM.events.register("tileloaded", function (e) {
>>>>>                var myVar= e;
>>>>>}
>>>>>
>>>>>and then somewhere in "myVar" you need to check if "olImageLoadError"
>>>>>is present. One area could be myVar.element.childNodes[0].innerHTML
>>>>>
>>>>>for me that is:
>>>>>"<img id="OpenLayersDiv77" style="position: relative; width: 256px;
>>>>>height: 256px; " class="olTileImage olImageLoadError" src=....>"
>>>>>
>>>>>You can do a text comparison to find if olImageLoadError is in there
>>>>>and report something back accordingly.
>>>>>
>>>>>I have not ever implemented this nor do I think it is a particularly
>>>>>good solution, but it should do what you are after.
>>>>>
>>>>>Toby
>>>>>
>>>>>
>>>>>
>>>>>On 16 February 2012 13:08, francescoboccacci at libero.it
>>>>><francescoboccacci at libero.it> wrote:
>>>>>> Hi, can you tell me how look at the css class? can you explain it more
>>>> clear?
>>>>>> Can you write a simple example ?
>>>>>> Thanks in advance...
>>>>>>
>>>>>> Francesco
>>>>>>
>>>>>>>----Messaggio originale----
>>>>>>>Da: ramotswa at gmail.com
>>>>>>>Data: 16/02/2012 14.02
>>>>>>>A: "francescoboccacci at libero.it"<francescoboccacci at libero.it>
>>>>>>>Cc: <bamerbalazs at gmail.com>, <openlayers-users at lists.osgeo.org>
>>>>>>>Ogg: Re: Re: [OpenLayers-Users] Capture Tile information
>>>>>>>
>>>>>>>No I understand what you are trying to do, but you can,
>>>>>>>programatically, look at the css class of every tile that comes in
>>>>>>>apparently.
>>>>>>>
>>>>>>>On 16 February 2012 12:53, francescoboccacci at libero.it
>>>>>>><francescoboccacci at libero.it> wrote:
>>>>>>>> ye..with firebug i can see all requests .. but i'd like to capture 
the
>>>>>> response
>>>>>>>> from the server if i'm using the tile from my cache or from server
>> (fresh
>>>>>> tile).
>>>>>>>> I don't know if is possible but it will be very interesting.Maybe we
>> have
>>>>>> to
>>>>>>>> work into openlayers code. Thanks
>>>>>>>>
>>>>>>>> Francesco
>>>>>>>>
>>>>>>>>>----Messaggio originale----
>>>>>>>>>Da: bamerbalazs at gmail.com
>>>>>>>>>Data: 16/02/2012 13.38
>>>>>>>>>A: <openlayers-users at lists.osgeo.org>
>>>>>>>>>Ogg: Re: [OpenLayers-Users] Capture Tile information
>>>>>>>>>
>>>>>>>>>Hi Imran,
>>>>>>>>>
>>>>>>>>>> You can see your http request using FireBug, if you are using
>> FireFox.
>>>>>>>>>
>>>>>>>>>Yes, but I thought a check during runtime from JavaScript. So that
>>>>>>>>>instead of displaying pink tiles, I would write a message about the
>>>>>>>>>problem with X layer.
>>>>>>>>>
>>>>>>>>>best regards: Balázs
>>>>>>>>>_______________________________________________
>>>>>>>>>Users mailing list
>>>>>>>>>Users at lists.osgeo.org
>>>>>>>>>http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Users mailing list
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>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
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>>>
>>>
>>>
>>>--
>>>Andreas Hocevar
>>>OpenGeo - http://opengeo.org/
>>>Expert service straight from the developers.
>>>
>>
>>
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>
>
>-- 
>Andreas Hocevar
>OpenGeo - http://opengeo.org/
>Expert service straight from the developers.
>