Cameron,
Thanks for the reply. I will take a look at the supplied links and
tutorials.
-- kent
Cameron Shorter <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
06/17/2007 03:32 PM
To
Kent B Kvarfordt <[EMAIL PROTECTED]>
cc
[email protected]
Subject
Re: [Mapbuilder-users] Dynamically Adding/deleting Layers
Yes, what you want to do is achievable, possibly with modifications
depending on whether existing functionality works for you.
Have a look at the examples.
http://demo.communitymapbuilder.org/
In particular:
http://demo.communitymapbuilder.org/demo/mapbuilder-lib-1.5-alpha1/demo/wfs-t/index.html
Allows you to insert, delete, query features on a map.
http://demo.communitymapbuilder.org/demo/mapbuilder-lib-1.5-alpha1/demo/OWSExplorer/index.html
Allows you to add/remove layers
And you want to extend existing functionality, I suggest looking at the
design:
http://communitymapbuilder.org/display/MAP/Design which explains how
events can be used to detect changes (using the Model View Controller
design pattern).
Also there is useful info in Tutorials:
http://communitymapbuilder.org/display/MAP/Tutorials
Kent B Kvarfordt wrote:
>
> I am currently evaluating MapBuilder and geoserver for an upcoming
> project I am working on.
>
> I need the ability to add and delete map layers dynamically during
> runtime. At a really high level, I envision the flow something like
> the following:
>
> Add Layer:
> 1. client side: a user clicks a button to plot a feature on
> the map
> 2. client side: the onclick event is captured, and an AJAX
> call to geoserver is made to retrieve the feature
> 3. client side: dynamically via Javascript, the feature is
> added to the map and the legend is updated
>
> Remove Layer:
> 1. client side: a user clicks a button to remove a feature
> form the map
> 2. client side: the onclick event is captured, and the feature
> is programmatically removed from the map and the legend is updated.
>
> Questions:
> * For the AJAX call, I assume I use a URL like the following
> where type name is the name of the feature I want to retrieve.
>
>
http://localhost/geoserver/wfs?request=getfeature&service=wfs&version=1.0.0&typename=WorldCountries
>
> * Once I have the returned XML how do I add it to the map? Do
> I use MapPane.addLayer and MapPane.deleteLayer? If so, what are the
> two parameters and how do I get them?
> * If I have the legend widget hooked up, does it listen for
> add/delete layer events and automatically update or do I need to do
> this myself?
> * Or, I am so far off the mark I don't even warrant a reply?
:-)
>
> Any code snippets or a tutorial in this area to get me going would be
> great.
>
> TIA,
> -- kent
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--
Cameron Shorter
Systems Architect, http://lisasoft.com.au
Tel: +61 (0)2 8570 5050
Mob: +61 (0)419 142 254
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