[mapguide-users] RE: parent.parent.parent.mapFrame - AJAX vsFUSION

Thu Sep 17 11:34:39 EDT 2009

Thanks, I've done some more reading and think I understand.  But that
being said, I'm confused as to why this still isn't working.  

-          In my navigatetask.aspx is where I grab the XY and scale
parameters.  

-          From here I create a url pointing to gotopoint.aspx and pass
in the XY and scale paremeters to the URL.

-          The gotopoint.aspx is being held and fired from the hidden
scriptFrame in MapGuide.  

-          Gotopoint.aspx contains the onPageLoad function which calls
ZoomToView.

So since I want the script frame to interact with the mapFrame I should
be able to start from the top frame and drill down like this:

function OnPageLoad()

{

    window.top.fusion.ZoomToView(<%= GetRequestParameters()["X"] %>, <%=
GetRequestParameters()["Y"] %>, <%= GetRequestParameters()["Scale"] %>,
true);

}

</script>

<body onLoad="OnPageLoad()">

Or I could also use the GetParent() function which should fire at the
first if (parent.Fusion) section as the scriptFrame should be one level
below the Fusion frame which is essentially defined as window.top.fusion
to begin with.  

Both these methods fire the script and open the URL passed in from
Navigate.aspx in a new IE window. I can only assume this is because the
reference to the mapFrame is invalid and somehow the URL defaults to
opening in a new window?  Do I need to reference MapGuideViewerAPI.js in
this script somewhere?? - I don't think this is the case as I didn't
need to do it for the mapFrame references.

-----------

I tried the IE8 debugger and my code (see below) fails at
GetParent().ZoomToView(605793.225947542, 5057603.85822154, 25000, true);
with the error 'undefined' is null or not an object.  I assume this
means it doesn't know what GetParent() is.

Any ideas?

F

<%@ Page language="c#"%>

<!-- #Include File="utilityfunctions.aspx" -->

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

<html>

<head>

    <title>Viewer Sample Application - Goto Point</title>

    <meta content="text/html; charset=utf-8" http-equiv="Content-Type">

    <meta http-equiv="content-script-type" content="text/javascript">

</head>

<!-- Emit this function and assocate it with the onLoad event for the
-->

<!-- page so that it gets executed when this page loads in the
-->

<!-- browser. The function calls the ZoomToView method on the
-->

<!-- Viewer frame forcing the Viewer to navigate to the specified
-->

<!-- point and scale.
-->

<script language="javascript">

function GetParent()

        {

            if (parent.Fusion) {

                return parent;

            } else if (parent.parent.Fusion) {

                return parent.parent;

            }

   }

function OnPageLoad()

{

    GetParent().ZoomToView(<%= GetRequestParameters()["X"] %>, <%=
GetRequestParameters()["Y"] %>, <%= GetRequestParameters()["Scale"] %>,
true);

}

</script>

<body onLoad="OnPageLoad()">

</body>

</html>

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Chris
Claydon
Sent: Wednesday, September 16, 2009 4:30 PM
To: MapGuide Users Mail List
Subject: RE: [mapguide-users] RE: parent.parent.parent.mapFrame - AJAX
vsFUSION

'parent' takes you to the frame that is the parent of the one you're
running the script in. The GetParent() method as defined below looks for
'Fusion' to be defined either in the direct parent or the parent of that
frame. If you're launching in a new window, you'll never get to a parent
that has Fusion defined. I think you need to use 'opener' instead...

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Fraser
Burgess
Sent: Wednesday, September 16, 2009 2:04 PM
To: MapGuide Users Mail List
Subject: RE: [mapguide-users] RE: parent.parent.parent.mapFrame - AJAX
vs FUSION

So GetParent() worked when things were called with
"parent.parent.parent.mapFrame"; however, what if I have something in
AJAX like this:

function OnPageLoad()

{

    parent.ZoomToView(<%= GetRequestParameters()["X"] %>, <%=
GetRequestParameters()["Y"] %>, <%= GetRequestParameters()["Scale"] %>,
true);

}

I then modify by adding your code below and then try:

function GetParent()

        {

            if (parent.Fusion) {

                return parent;

            } else if (parent.parent.Fusion) {

                return parent.parent;

            }

   }

function OnPageLoad()

{

    GetParent().ZoomToView(<%= GetRequestParameters()["X"] %>, <%=
GetRequestParameters()["Y"] %>, <%= GetRequestParameters()["Scale"] %>,
true);

}

This code is using the sample gotopoint.aspx file.  When I select the
link that activates this gotopoint, the URL contains the X Y and scale
http://172.16.186.38/mapguide2010/UtilityMap/gotopoint.aspx?X=632593.974
151717&Y=4989398.03115329&Scale=25000 which should be passed into this
onPageLoad() function.  However it appears that nothing is firing for
OnPageLoad - so when I click the link nothing happens, no error message
or anything.

Can anyone help with this problem?  Also, can anyone point me to
something that would help explain this parent.parent. syntax?  I'm not
really certain why at one point we would use parent.function() vs
parent.parent.parent.function() etc.

Thanks again

Fraser

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Berdel,
Brian
Sent: Wednesday, September 16, 2009 9:02 AM
To: MapGuide Users Mail List
Subject: [mapguide-users] RE: parent.parent.parent.mapFrame - AJAX vs
FUSION

If you want to add the reference to your fusion index page, add the
following to your aspx (task pane) page

function GetParent()

        {

            if (parent.Fusion) {

                return parent;

            } else if (parent.parent.Fusion) {

                return parent.parent;

            }

   }

Then you can call functions in the same way as before but substitute

GetParent().DigitizePoint(OnPointDigitized);

Brian Berdel

McMahon Associates, Inc.

p: 215.283.9444 x 260

www.mcmtrans.com

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Chris
Claydon
Sent: Tuesday, September 15, 2009 4:43 PM
To: MapGuide Users Mail List
Subject: [mapguide-users] RE: parent.parent.parent.mapFrame - AJAX vs
FUSION

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

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