[mapguide-users] Calling viewer api functions from the main page

Tue Jun 10 05:34:09 EDT 2008

i have tried getElementId() but i didn't use iframe.contentWindow and i tried
iframe.contentWindow but didn't use getElementId(). i don't know why i
didn't use both!

but its working now. i have this same problem with other projects so they're
also fixed.

many thanks!

Kenneth Skovhede, GEOGRAF A/S wrote:
> 
> I can clearly see an error in firebug.
> It says "parent.imapframe has no properties".
> And that is true. The button is running in the same document as the
> iframe.
> Thus the documents parent is the window, and it has no iframes.
> 
> You should not rely on getting and entry by using its ID as the variable 
> name, as that is not W3C compliant.
> You should use document.getElementById() instead.
> 
> There exists functions to get the correct frame, use "GetMapFrame()".
> I have fixed the code in your example.
> 
> To examine what happens, try the following:
> 1. Start the page in firefox
> 2. Activate firebug
> 3. Select the "Script" tab
> 4. Select the page in the dropdown next to the "inspect" button (topmost)
> 5. Click next to the number 15 on the right (the line: var iframe = 
> document.getElementById('imapframe');)
> 6. Click the "Refresh" button in the page.
> 7. Observe the line gets highlighted in firebug
> 8. On the pane to the right, try to click on "New watch expression..."
> 9. Try to enter the following (press enter after each): parent, window, 
> document.getElementById('imapframe')
> 10. Examine their properties by clicking the + signs below
> 
> You can step to the next line by pressing F10.
> On line 23, try to press F11 to step into the function.
> Press F8 to resume the javascript.
> 
> This is the HTML I used:
> 
> <html>
> <head>
> </head>
> <body>
> 
> <iframe id="imapframe" frameborder="0" height="600" scrolling="no"
> width="800" 
> src="/mapguide/mapviewernet/ajaxviewer.aspx?WEBLAYOUT=Library://Samples/Sheboygan/Layouts/SheboyganAsp.WebLayout&USERNAME=Anonymous&PASSWORD="></iframe>
> 
> <input type="button" value="refresh" onclick="test()" />
> 
> <script type="text/javascript">
> function test()
> {
>     //Get the iframe
>     var iframe = document.getElementById('imapframe'); //Set breakpoint
> here
>     //var iframe = imapframe; <-- Non-standard compliant way, but 
> usually works
> 
>     //Some browsers return the <iframe> tag, others return the contents, 
> this evens it out
>     if (iframe.contentWindow)
>         iframe = iframe.contentWindow;
> 
>     //Use the utility function to get the map frame
>     iframe.GetMapFrame().Refresh(); //Try F11 here
> 
>     //The original code
>     //parent.imapframe.mapFrame.Refresh();
> 
>     //Alternative, depends on the internal layout of the viewer
>     iframe.mapFrame.Refresh();
> }
> </script>
> </body>
> </html>
> 
> Regards, Kenneth Skovhede, GEOGRAF A/S
> 
> 
> 
> A H skrev:
>> well there's no error, so firebug didn't detect anything.
>>
>>
>> you can try on this,
>>
>> this is the iframe,
>>
>> <iframe id="imapframe" frameborder="0" height="600" scrolling="no"
>> width="800" src="/mapguide/mapviewernet/ajaxviewer.aspx?SESSION=<%=
>> get_session() %>&WEBLAYOUT=<%= get_layout() %>"></iframe>
>>
>>
>> and a button,
>>
>> <input type="button" value="refresh" onclick="test()" />
>>
>>
>> and the refresh command,
>>
>> <script type="text/javascript">
>>     function test()
>>     {
>>         parent.imapframe.mapFrame.Refresh();
>>     }
>> </script>
>>
>>
>> i've been googling for some time and still haven't find a solution to
>> make
>> this work in Firefox.
>>
>>
>>
>>
>> Kenneth Skovhede, GEOGRAF A/S wrote:
>>   
>>> If you install firebug, you can inspect the code, and examine the 
>>> objects you are calling:
>>> http://www.getfirebug.com/
>>>
>>> Next step would be to look at "MapGuide Developers Guide" page 19:
>>> http://mapguide.osgeo.org/2.0/documentation.html
>>>
>>> You can see how the viewer frames are laid out, and see what 
>>> "parent.parent" points to.
>>> Page 18 describes what the frames are for and page 20-25 describe 
>>> concrete cases.
>>>
>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>
>>>
>>>
>>> A H skrev:
>>>     
>>>> sadly this doesn't work in Firefox. have anyone done this in Firefox?
>>>>
>>>>
>>>>
>>>> uXuf wrote:
>>>>   
>>>>       
>>>>> Okay thanks. parent.viewerFrame.mapFrame works like a charm!
>>>>>
>>>>> uXuf
>>>>>
>>>>>
>>>>> Ivan Milicevic-3 wrote:
>>>>>     
>>>>>         
>>>>>> try parent.viewerFrame.mapFrame.Refresh(); od
>>>>>> window.frames.mapFrame.Refresh();
>>>>>>
>>>>>> ________________________________
>>>>>>
>>>>>> From: mapguide-users-bounces at lists.osgeo.org on behalf of uXuf
>>>>>> Sent: uto 8.1.2008 22:43
>>>>>> To: mapguide-users at lists.osgeo.org
>>>>>> Subject: [mapguide-users] Calling viewer api functions from the main
>>>>>> page
>>>>>>
>>>>>>
>>>>>> Hi all, I am trying to access the Viewer API functions from the main
>>>>>> page
>>>>>> of my application, i.e. the page that has the WebLayout embedded (or
>>>>>> the
>>>>>> iframe). I cannot seem to grab the exact frame from which these
>>>>>> functions
>>>>>> would be accessible. I tried using
>>>>>> document.getElementById("viewerFrame").GetMapFrame() (viewerFrame is
>>>>>> the
>>>>>> name of the iframe) putting it in the onload function of the iframe
>>>>>> but
>>>>>> it returns "Object doesn't support this property or method". Can
>>>>>> anyone
>>>>>> help me in this regard? Thanks! uXuf 
>>>>>>
>>>>>> ________________________________
>>>>>>
>>>>>> View this message in context: Calling viewer api functions from the
>>>>>> main
>>>>>> page
>>>>>> <http://www.nabble.com/Calling-viewer-api-functions-from-the-main-page-tp14699670s16610p14699670.html> 
>>>>>> Sent from the MapGuide Users mailing list archive
>>>>>> <http://www.nabble.com/MapGuide-Users-f14845.html>  at Nabble.com.
>>>>>>
>>>>>>
>>>>>>  
>>>>>> _______________________________________________
>>>>>> mapguide-users mailing list
>>>>>> mapguide-users at lists.osgeo.org
>>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>>>
>>>>>>
>>>>>>       
>>>>>>           
>>>>>     
>>>>>         
>>>>   
>>>>       
>>> _______________________________________________
>>> mapguide-users mailing list
>>> mapguide-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>
>>>
>>>     
>>
>>   
> 
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> 

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