[mapguide-users] Navigation Example .NET
Kenneth
ks at geograf.dk
Wed May 23 10:02:42 EDT 2007
What version of the MapGuide server did you use?
I cannot get it to update the legend correctly, when the "summary"
parameter is present.
Regards, Kenneth, GEOGRAF A/S
Berdel, Brian wrote:
>
> I take that back...I got it to work.
>
> It was actually much simpler than all of this. And Refresh does in
> fact Refresh the legend.
>
>
>
> I simply had to call GetMapFrame().Refresh();
>
>
>
> Before calling ZoomToView
>
>
>
> All is well and it works great.
>
>
>
> Thanks again for all of your help.
>
>
>
>
>
> Brian Berdel
>
> McMahon Associates, Inc.
>
> p: 215.283.9444
>
> www.mcmtrans.com
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Berdel,
> Brian
> *Sent:* Tuesday, May 22, 2007 9:50 AM
> *To:* MapGuide Users Mail List
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
>
>
> I cannot get it to work with your workaround. (or with any I have tried J)
>
> I took out the summary parameter and made the change to ajaxmappane.templ
>
> And the map will not display at all. This seems like a pretty basic
> piece of functionality that has gone without working for a long time.
> I found e-mails on this dated back to October.
>
>
>
> Thanks,
>
>
>
> Brian Berdel
>
> McMahon Associates, Inc.
>
> p: 215.283.9444
>
> www.mcmtrans.com
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Kenneth
> *Sent:* Monday, May 21, 2007 2:33 PM
> *To:* MapGuide Users Mail List
> *Subject:* Re: [mapguide-users] Navigation Example .NET
>
>
>
> I can't find it either :D...
>
> Here is the text of my post:
> <snip>
> When using the server API for altering layer visibility, a call to the
> GetMapFrame().Refresh() is not sufficient to refresh the legend.
>
> Pseudocode:
> $map.Open(...);
> $map.Layers('layername').setVisibility(true);
> $map.Save();
>
> Calling the GetMapFrame().Refresh() after this, will update the map to
> display the new layer.
> However the Legend does not reflect this change.
>
> The problem can be solved with two changes:
> 1. In ajaxmappane.templ, the Refresh() function should also call
> ResetVisLayers()
> 2. In legendctrl.templ, the Refresh call should be changed, so it does
> not call with the summary parameter
>
> The problem only occurs in the AJAX viewer.
> When retrieving the legend script, using the summary parameter, the
> visibility does not change.
> Removing the summary parameter is a bad fix, as it also disables the
> optimizations that the summary parameter gives.
>
> If the above mentioned fix 1, is not implemented, a lot of features will
> fail after modifying the map.
> For instance tooltips for the layers will not work.
>
> I think this is a problem with a design flaw in the way the viewer is
> implemented.
> Keeping state data solely on the client is a very bad idea.
> This happens with layerstates and current zoom in the AJAX viewer, and
> the Selection in the DWF viewer.
>
> To allow modifications to the map from the server API, all data should
> be written to the server.
> To provide caching the client should fetch a change list, rather than
> sporadically caching data.
> Using a sequence number, the client can skip multiple update cycles, and
> still be synced correctly.
> Using a generic format would allow the DWF and ajax viewer to work on
> exactly the same data, thus reducing duplicate code.
>
> </snip>
>
> Regards, Kenneth, GEOGRAF A/S
>
>
>
>
> Berdel, Brian wrote:
>
> Looks like you are right...Thanks. I cannot seem to find your
> workaround, can you send me a link or something?
>
>
>
> Thanks,
>
>
>
> Brian Berdel
>
> McMahon Associates, Inc.
>
> p: 215.283.9444
>
> www.mcmtrans.com <http://www.mcmtrans.com>
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> <mailto:mapguide-users-bounces at lists.osgeo.org>
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Kenneth
> *Sent:* Monday, May 21, 2007 9:58 AM
> *To:* MapGuide Users Mail List
> *Subject:* Re: [mapguide-users] Navigation Example .NET
>
>
>
> The zoom will invalidate the map, and is the same as a refresh.
> I haven't tested it, but I don't think a scale change (eg. zoom) will
> refresh the visible layer cache, but it might.
>
>
> Regards, Kenneth, GEOGRAF A/S
>
>
>
>
> Andy Morsell wrote:
>
> But in the example below, where the layer is being set to visible
> right before a zoom, the zoom should take care of the map refresh and
> the layer should appear on the subsequent map. Or, is this not the case?
>
>
>
> Andy
>
> ------------------------------------------------------------------------
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> <mailto:mapguide-users-bounces at lists.osgeo.org>
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Kenneth
> *Sent:* Sunday, May 20, 2007 11:18 AM
> *To:* MapGuide Users Mail List
> *Subject:* Re: [mapguide-users] Navigation Example .NET
>
> If you modify the layer visibility, using serverside code, it will not
> work correctly with the AJAX viewer.
> The problem is that the AJAX client has a small cache of visible
> layers, and calling map.refresh() on the client does not invalidate
> this cache.
>
> The symptoms will be that no tooltip is displayed for the layer, and
> the layer never shows up in the legend.
> I've posted this bug on the mapguide-internals list, and a workaround.
>
>
> Regards. Kenneth, GEOGRAF A/S
>
>
>
>
>
> Berdel, Brian wrote:
>
> Cool, thanks! I'll give it a try.
>
> Brian Berdel
>
>
>
> McMahon Associates, Inc.
>
>
>
> p: 215.283.9444
>
>
>
> www.mcmtrans.com <http://www.mcmtrans.com>
>
> ------------------------------------------------------------------------
> size=2 width="100%" align=center tabindex=-1>
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> <mailto:mapguide-users-bounces at lists.osgeo.org>
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Andy
> Morsell
> *Sent:* Friday, May 18, 2007 12:39 PM
> *To:* 'MapGuide Users Mail List'
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
> The execution of the API functions must happen server side in this
> instance. But, it looks like you could put your .NET conditional code
> in the gotopoint.aspx page and it would work. The OnPageLoad()
> javascript function would fire afterwards so all should behave
> smoothly. And, you would not have to programmatically refresh the map
> since that will happen with the ZoomToView anyway.
>
> Andy
>
> ------------------------------------------------------------------------
> size=2 width="100%" align=center tabindex=-1>
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> <mailto:mapguide-users-bounces at lists.osgeo.org>
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Berdel,
> Brian
> *Sent:* Friday, May 18, 2007 9:28 AM
> *To:* MapGuide Users Mail List
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
> Thanks for the response. I am looking for a way to achieve this on
> the client side. I do not want to check until after the user has
> clicked on link. (such as putting it in the gotopoint.aspx page). Will
> this work here?
>
> Brian Berdel
>
>
>
> McMahon Associates, Inc.
>
>
>
> p: 215.283.9444
>
>
>
> www.mcmtrans.com <http://www.mcmtrans.com>
>
> ------------------------------------------------------------------------
> size=2 width="100%" align=center tabindex=-1>
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> <mailto:mapguide-users-bounces at lists.osgeo.org>
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Andy
> Morsell
> *Sent:* Friday, May 18, 2007 11:40 AM
> *To:* 'MapGuide Users Mail List'
> *Subject:* RE: [mapguide-users] Navigation Example .NET
>
> You should be able to use the MgLayer::IsVisible function to check the
> visibility and then SetVisible to turn it on. You will then have to
> refresh the map to reflect the change.
>
> Andy Morsell, P.E.
> Spatial Integrators, Inc.
> http://www.SpatialGIS.com
>
> ------------------------------------------------------------------------
> size=2 width="100%" align=center tabindex=-1>
>
> *From:* mapguide-users-bounces at lists.osgeo.org
> <mailto:mapguide-users-bounces at lists.osgeo.org>
> [mailto:mapguide-users-bounces at lists.osgeo.org] *On Behalf Of *Berdel,
> Brian
> *Sent:* Friday, May 18, 2007 8:00 AM
> *To:* MapGuide Users Mail List
> *Subject:* [mapguide-users] Navigation Example .NET
>
> Anyone know how I would go about checking to see if a layer was on in
> the navigation example and if it is not turn it when clicking a link.
>
> Thanks!
>
> Brian Berdel
>
>
>
> McMahon Associates, Inc.
>
>
>
> p: 215.283.9444
>
>
>
> www.mcmtrans.com <http://www.mcmtrans.com>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------
>
>
>
>
>
>
>
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org <mailto:mapguide-users at lists.osgeo.org>
> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------
>
>
>
>
>
>
>
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org <mailto:mapguide-users at lists.osgeo.org>
> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>
>
>
>
>
>
> ------------------------------------------------------------------------
>
>
>
>
>
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org <mailto: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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapguide-users/attachments/20070523/2198f19b/attachment.html
More information about the mapguide-users
mailing list