[OpenLayers-Users] Highlighting changes in the KML layer

[helmi]

The idea from http://trac.openlayers.org/ticket/1259
{{{
You could create a selectStyle that could be passed to Control.SelectFeature
quite easily: create a style object, read the "highlight" styles, create a
FidFilter rule for every feature (or groups of features with the same
style), use the according "highlight" style as symbolizer for the rule, and
add the rule to the style object
}}}

helmi03.com

On Tue, Nov 3, 2009 at 12:59 AM, Adrian Popa
<adrian_gh.popa at romtelecom.ro>wrote:

> Hello everyone,
>
> Sorry if this has already been discussed on the list (didn't really
> check), but I would like to know if there is a solution (or at least a
> plan to implement a feature) that  "somehow" highlights (visually) the
> elements that have been loaded  through KML - in contrast to the
> elements displayed previously.
>
> I am working at a view that displays alarms on top of the map, and if
> there is a large number of alarms, one more alarm coming every 2 minutes
> will not catch the attention of the operator...
>
> I need a mechanism to somehow color/animate symbols loaded through KML
> which were not previously on the map. Symbols which dissapear between
> layer refreshes are not important to me. At the next refresh cycle, the
> highlighted symbols would no longer be highlighted (because they already
> exist on the map).
>
> I have a way to load KMLs periodically, avoiding the cache, but I'm
> missing the "highlight" mechanism.
>
> Hope I have presented my request in an understandable manner, and hope
> there is a solution. Maybe a property on the KML layer indicating if an
> item is new or not...
>
> Regards,
> Adrian
>
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