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Show or hide logic in FeatureCaptionProvider [message #1694794]

Thu, 07 May 2015 23:23

John Conlon

Messages: 35
Registered: July 2009

Member

In the DSL is it possible to hide or show features based on a user preference like below?

featureCaptionProvider{
		val store = PerspectivePlugin.getDefault().getPreferenceStore();
		val hideGeoLocations = store.getBoolean(PreferenceConstants.P_HIDE_GEO_LOCATION);
		
   	 text {
   	 	Location : name -> 'Location Name:'
   	 	Location : tag -> 'Primary Tag ID:'
   	 	Location : alternateId -> 'Alternate ID:'
   	 	Location : ^type -> 'Type of Location:'
   	 	Location : description -> 'Description:'
   	 	
   	 	// Hide or show these values based on hideGeoLocations val
   		Location : boundary -> 'Perimeter boundary as Geo Polygon Coordinates:'
   	 	Location : latitude -> 'Latitude:'
   	 	Location : longitude-> 'Longitude:'
   	 	Location : altitude-> 'Altitude:'
   	 	Location : altitudeMode -> 'Altitude Mode:'

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Re: Show or hide logic in FeatureCaptionProvider [message #1694880 is a reply to message #1694794]

Fri, 08 May 2015 16:03

Lorenzo Bettini

Messages: 1812
Registered: July 2009
Location: Firenze, Italy

Senior Member

On 08/05/2015 01:23, John Conlon wrote:
> In the DSL is it possible to hide or show features based on a user
> preference like below?
>
>
> featureCaptionProvider{
> val store = PerspectivePlugin.getDefault().getPreferenceStore();
> val hideGeoLocations =
> store.getBoolean(PreferenceConstants.P_HIDE_GEO_LOCATION);
>
> text {
> Location : name -> 'Location Name:'
> Location : tag -> 'Primary Tag ID:'
> Location : alternateId -> 'Alternate ID:'
> Location : ^type -> 'Type of Location:'
> Location : description -> 'Description:'
>
> // Hide or show these values based on hideGeoLocations val
> Location : boundary -> 'Perimeter boundary as Geo Polygon
> Coordinates:'
> Location : latitude -> 'Latitude:'
> Location : longitude-> 'Longitude:'
> Location : altitude-> 'Altitude:'
> Location : altitudeMode -> 'Altitude Mode:'
>

Hi John

if you need to completely hide the features, you should customize the
featuresProvider: the featureCaptionProvider only specifies the labels
for form and dialog fields.

However, currently, there's no way to specify features in the
featuresProvider in a conditional way in the DSL: you can only return
the features for a given EClass, but not based on a condition; you could
however implement a custom FeaturesProvider directly in Java, see the
"Features Provider" section in the documentation (and bind it either in
the Java Guice module, or in the DSL using the 'bindings' section).

Does that help?
cheers
Lorenzo

--
Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
HOME: http://www.lorenzobettini.it
Xtext Book:
http://www.packtpub.com/implementing-domain-specific-languages-with-xtext-and-xtend/book

HOME: http://www.lorenzobettini.it
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