[OpenLayers-Users] popup with wfs marker layer...

[John Cole]

Christopher,
  I'm not married to the markers, but it seems to fit the bill for this
application.  Will the new WFS allow points to be rendered with a bitmap as
well as a vector symbol?

  In either case, it would be very nice to have an option to attach a
feature level event to vector layers, to handle selection/info/editing of
WFS features.

  To make sure I understand how to do what I want with the 2.3 WFS markers,
I need to create a new class, inherit from OpenLayers.Layer.WFS and override
the function that populates the markers array, attaching my event handler as
the markers are created.  That seems ok, but I can't seem to find the
function that actually loads the markers, could you provide a hint as to
it's location? :-)

Thanks,

John

-----Original Message-----
From: Christopher Schmidt [mailto:crschmidt at metacarta.com] 
Sent: Saturday, March 10, 2007 9:20 PM
To: John Cole
Cc: 'users at openlayers.org'
Subject: Re: [OpenLayers-Users] popup with wfs marker layer...

On Sat, Mar 10, 2007 at 03:15:32PM -0600, John Cole wrote:
> I'm trying to create a popup based off of a WFS layer, but I'm a little
> unclear on which object I should register for the call back.
> 
> I'd like it to work similar to the Text layer, where I click on a marker
and
> it displays the info from the WFS object.  The Text layer puts a popup
> handler on each marker.  With the WFS layer, I can get an event registered
> so it is called when a marker is clicked, but I don?t yet understand how
to
> tie the event back to the information in the WFS layer.
> 
> I'd appreciate a suggestion or pointer on how to implement this type of
> popup.

Two things:
 
  1. The next release of OpenLayers is going to change the WFS
     functionality to be based on vectors instead of markers. Because I
     had not yet seen what I considered a critical mass of users
     changing the behavior of the WFS layer, I considered changing this
     without changing the name to be acceptable. It sounds like you're
     saying that you would like this to not change. Is this correct?

  2. I don't know of anyone who has succesfully done this. In general,
     the way this is meant to be done is via subclassing Feature.WFS
     such that it has a different createMarker and createPopup functions
     or something like that, but I don't have any working examples for
     you. 

Regards,
-- 
Christopher Schmidt
MetaCarta

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