[mapguide-users] RE: parent.parent.parent.mapFrame - AJAX vs FUSION

[Chris Claydon]

I think you should be able to reference the MapGuideViewerAPI.js script from your aspx page, and then just call DigitizePoint directly without any window.top or parent references.

It should also be possible to add a reference to MapGuideViewerAPI.js to the index.html file in the Fusion template you're using, and reference it using window.top...

It's been a while since I've played around with this stuff, so someone else may be able to provide specifics...

From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Fraser Burgess
Sent: Tuesday, September 15, 2009 1:40 PM
To: MapGuide Users Mail List
Subject: [mapguide-users] parent.parent.parent.mapFrame - AJAX vs FUSION

Hi List,

I'm making steady progress with my project and learning many things about MapGuide along the way thanks largely to the help from those on this list - many thanks to those who have helped so far

>From what I can tell parent.parent.parent.mapFrame is how the map frame is referenced from the task pane in the AJAX viewer.  I have been reading posts about how this is referenced in Fusion and it seems the MapGuideViewerAPI.js file has a bit of info.  Unfortunately I'm having a bit if trouble putting the pieces together and was hoping that someone here may steer me in the right direction.

In both AJAX and FUSION I'm working from the taskpane and using the markup scripts that are part of the AJAX demo's and tutorials.

I assume I need to substitute either 'Fusion' or 'window.top.Fusion' somehow for 'parent.parent.parent.mapFrame.DigitizePoint(OnPointDigitized);'. in my script however I have yet to do this in such a way that it works.  I keep getting 'Object doesn't support this property or method'.

So for example in my editmarkup.aspx code for example, I have the following function which should be activated when I click the digitize point button

            function AddPoint()
            {
                  SetDigitizeInfo(EDIT_POINT_HELP);
                  parent.parent.parent.mapFrame.DigitizePoint(OnPointDigitized);
            }

In Fusion this code gives an error 'parent.parent,parent.mapFrame' is null or not an object

I see that in MapGuideViewerAPI.js

function DigitizePoint(handler) {
    if (handler) {
      var Fusion = window.top.Fusion;
      var mapWidget = Fusion.getWidgetById(mapWidgetId);
      var digitizer = new Fusion.Tool.Canvas.Point(mapWidget);
      digitizer.mouseUp = PointHandlers.prototype.mouseUp;
      Object.inheritFrom(digitizer, Fusion.Tool.Canvas.prototype, []);
      digitizer.initializeCanvas();
      var activeWidget = mapWidget.buttonSet.activeButton;
      mapWidget.buttonSet.setActiveButton(null);
      digitizer.handler = function() {
          handler.apply(null, arguments);
          activeWidget.setActive(true);
      }
      digitizer.activateCanvas();

      //add a listener to update the position of the features
      var mapWidget = Fusion.getWidgetById(mapWidgetId);
      mapWidget.registerForEvent(Fusion.Event.MAP_EXTENTS_CHANGED,
        function(){
          digitizer.updatePx();
          digitizer.clearContext();
          digitizer.draw(digitizer.context);
        }
      );
    }
}

Thanks
Fraser
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapguide-users/attachments/20090915/01865843/attachment.html