[mapguide-users] OnSelectionChanged in AJAX viewer?

[Tanja Suikkanen]

My map is embedded in my own page. 

When a user selects one or more features on the map, I want my own function
to be executed.

But doesn't parent.parent.mapFrame still get me the map frame..? 

And this works but only when I click some button. 

 

Tanja

 

 

From: Kenneth, GEOGRAF A/S [mailto:ks at geograf.dk] 
Sent: 28. huhtikuuta 2008 13:57
To: tanja.suikkanen at dimenteq.fi; MapGuide Users Mail List
Subject: SPAM-LOW: Re: [mapguide-users] OnSelectionChanged in AJAX viewer?

 

Are you issuing the script from a command?

If you want to do this all the time (regardless of what the user has done),
you must load the script with the solution.
If your map is embedded in another page, you can load the script there, and
change "var map = parent.parent.mapFrame;" to point to the correct frame.
If it is just the basic layout, you can try to put it in the page that loads
in the taskpane (but beware that the document gets unloaded if the user
navigates).
As a last resort, you can embed the script in the viewerfiles.

In case you can use the embedded map approach, you should place the
following line after the "try {":
map = document.getElementById('<insert iframe/frame id>').GetMapFrame()



Regards, Kenneth, GEOGRAF A/S



Tanja Suikkanen skrev: 

Ok, I sent my code snippet earlier today, but here it is again.

I got this example from
http://trac.osgeo.org/mapguide/wiki/CodeSamples/JavaScript/AJAXViewerEventHo
oking.

 

var map = parent.parent.mapFrame;

 

    var origOnSelectionChanged = null;

 

    function MySelectionHandler()

    {

        origOnSelectionChanged();

 

        var selCount = map.GetSelectedCount();

        if(selCount > 0)

        {

            My function() {}

        }

    }

 

    window.onload = function() {

        

        var timer;

 

        var watch = function() {

        

            try {

                if(map.mapInit) {

 

                    clearInterval(timer);

 

                    origOnSelectionChanged = map.OnSelectionChanged;

 

                    map.OnSelectionChanged = MySelectionHandler;

                }

            }

            catch(e) {

            }

        };

    

        timer = setInterval(watch, 200);

    };

 

Window.onload function is executed only, if I press a button.

I want to have the functionality I was telling you about without any button
clicks.

Please ask if I don't tell you enough.

 

Tanja

 

 

From: Ivan Milicevic [mailto:Ivan.Milicevic at supranet.hr] 
Sent: 28. huhtikuuta 2008 12:04
To: tanja.suikkanen at dimenteq.fi; MapGuide Users Mail List
Subject: RE: [mapguide-users] OnSelectionChanged in AJAX viewer?

 

Feature doesn't get highlighted?

 

Of course that you can add this functionality  in your own code, the logic
is same. Allwas call mapFrame functions (via JavaScript) or count selection
from C# or PHP.

 

If you want to get some help over here, be more specific.

 

Ivan.

 

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Tanja Suikkanen
Sent: Monday, April 28, 2008 10:46 AM
To: mapguide-users at lists.osgeo.org
Subject: RE: [mapguide-users] OnSelectionChanged in AJAX viewer?

 

Ok, now it worked but some functionality had been removed?

When I first select a feature, everything goes fine but when I select
another feature, that doesn't get highlighted.

Also I wouldn't like to change the original files, just add my own
functionality in my own code files.

But thanks anyway!

 

Tanja

 



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