[ka-Map-users] iframe passing extents back to containing page

[Paul Spencer]

look in kaTool.js ...

Cheers

Paul

On 6-Sep-06, at 2:34 PM, percy wrote:

> Thanks Paul, that was easy, next time I promise to look at kamap.js  
> a little closer :-)
>
> Though maybe you could save me some time on this question:
> I'd like to modify the default behaviour on a dbl-click to zoom in  
> AND pan, instead of just panning.
>
> Can I have a clue on this one as well?
>
> Thanks a bunch,
> Percy
>
> Paul Spencer wrote:
>> Percy,
>>
>> to set the extents of the iframe, you can do something like:
>>
>> document.getElementById 
>> ('frameid').contentWindow.myKaMap.zoomToExtents(minx,miny,maxx,maxy);
>>
>> Cheers
>>
>> Paul
>>
>> On 6-Sep-06, at 12:41 AM, percy wrote:
>>
>>> So, now that we have a way to GET the extents that the user  
>>> zoomed to, we'd like to do the opposite!
>>>
>>> We'd like to SET the extents of the iframe, based on what the  
>>> user has already zoomed to, after they look at their results and  
>>> then hit the back button in their browser to refine their search.
>>>
>>> I can capture and parse the extents from the bounding box fields  
>>> using the window.onload event, but I am trying to figure out the  
>>> most elegant way to pass these to the iframe object. I couldn't  
>>> find a "setGeoExtents" method. I thought about programmatically  
>>> poking the values into the src property of the iframe object, but  
>>> I worry that I am setting myself up for some creepy cross-browser  
>>> DOM issues.
>>>
>>> Any ideas on the best approach to this? Here's the beta version  
>>> we are using for testing:
>>> http://ngmdb.usgs.gov/ngmdb_work/ngm_compsearch_map.html
>>>
>>> Thanks,
>>> Percy
>>>
>>> percy wrote:
>>>> Hi Paul, below is the code we ended up using, in case it helps  
>>>> anyone else...
>>>> And here's the page it's in for testing:
>>>> http://geospatial.research.pdx.edu/~bjpd/usgs/ngm_quicksearch9.html
>>>>
>>>> Thanks again,
>>>> Percy
>>>>
>>>> -------------------iframe code to dump extents into hidden  
>>>> fields for database search----------------
>>>> <iframe id = "geosrchmap" name= "geosrchmap" src = "http:// 
>>>> geospatial.research.pdx.edu/~bjpd/kamap-cvs/htdocs/iframe.html"  
>>>> width = "100%" height = "400">
>>>> </iframe>
>>>> <input name = "showextents" value ="Use This Extent" type =  
>>>> "button" onclick = "storeExtents()">
>>>> <script type = "text/javascript" language = "javascript">
>>>> function storeExtents()
>>>> {
>>>> var myextents = document.getElementById 
>>>> ('geosrchmap').contentWindow.myKaMap.getGeoExtents()
>>>> //alert(myextents)
>>>> document.getElementById('kaminx').value = myextents[0]
>>>> document.getElementById('kaminy').value = myextents[1]
>>>> document.getElementById('kamaxx').value = myextents[2]
>>>> document.getElementById('kamaxy').value = myextents[3]
>>>> }
>>>>
>>>> </script>
>>>> <input id="kaminx" name="kaminx" type = "hidden" value="" >
>>>> <input id="kaminy" name="kaminy" type = "hidden" value="" >
>>>> <input id="kamaxx" name="kamaxx" type = "hidden" value="" >
>>>> <input id="kamaxy" name="kamaxy" type = "hidden" value="" >
>>>> ------------------------------------------------------------------- 
>>>> --------------------------------------
>>>>
>>>> Paul Spencer wrote:
>>>>> Percy,
>>>>>
>>>>> I'll try to catch you on IRC (pagameba) but in case I don't ...
>>>>>
>>>>> If your iframe is loaded from the same site as your main page,  
>>>>> then you are allowed to script between them.  Whatever triggers  
>>>>> your query, you can do one of the following:
>>>>>
>>>>> 1) from the main page (in response to clicking a button or  
>>>>> something), you can call the kaMap object in the frame ...
>>>>>
>>>>> document.getElementById 
>>>>> ('frameid').contentWindow.myKaMap.getExtents();
>>>>>
>>>>> 2) from the iframe (in response to an event for instance), you  
>>>>> can call a function in the parent window ...
>>>>>
>>>>> window.parent.someFunction();
>>>>>
>>>>> Cheers
>>>>>
>>>>> Paul
>>>>>
>>>>> On 31-Jul-06, at 1:19 PM, percy wrote:
>>>>>
>>>>>> I would like to embed a kamap iframe within a database search  
>>>>>> page and
>>>>>> have it pass back the extent of what the user has zoomed to so  
>>>>>> that I
>>>>>> can use this in a query to my database.
>>>>>>
>>>>>> the goofy part is that the embedding page is a Perl CGI, so I  
>>>>>> think I'm stuck using Perl mapscript to access the iframe's  
>>>>>> properties.
>>>>>>
>>>>>> any hints on the best way to do this? I'm on the IRC right now...
>>>>>>
>>>>>> thanks,
>>>>>> percy
>>>>>>
>>>>>> PS I searched the mailing list archives already...
>>>>>>
>>>>>> _______________________________________________
>>>>>> ka-Map-users mailing list
>>>>>> ka-Map-users at lists.maptools.org
>>>>>> http://lists.maptools.org/mailman/listinfo/ka-map-users
>>>>>
>>>>> +----------------------------------------------------------------- 
>>>>> +
>>>>> |Paul Spencer                            
>>>>> pspencer at dmsolutions.ca   |
>>>>> +----------------------------------------------------------------- 
>>>>> +
>>>>> |Applications & Software  
>>>>> Development                              |
>>>>> |DM Solutions Group Inc                 http:// 
>>>>> www.dmsolutions.ca/|
>>>>> +----------------------------------------------------------------- 
>>>>> +
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>> _______________________________________________
>>> ka-Map-users mailing list
>>> ka-Map-users at lists.maptools.org
>>> http://lists.maptools.org/mailman/listinfo/ka-map-users
>>
>> +-----------------------------------------------------------------+
>> |Paul Spencer                           pspencer at dmsolutions.ca   |
>> +-----------------------------------------------------------------+
>> |Applications & Software Development                              |
>> |DM Solutions Group Inc                 http://www.dmsolutions.ca/|
>> +-----------------------------------------------------------------+
>>
>>
>>
>>
>>
>

+-----------------------------------------------------------------+
|Paul Spencer                           pspencer at dmsolutions.ca   |
+-----------------------------------------------------------------+
|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
+-----------------------------------------------------------------+