Implemented chips for selecting dietary preferences

app/src/main/java/com/denizk0461/studip/viewmodel/CanteenViewModel.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import androidx.lifecycle.LiveData
 import com.denizk0461.studip.data.StwParser
 import com.denizk0461.studip.model.CanteenOffer
+import com.denizk0461.studip.model.DietaryPreferences
 
 class CanteenViewModel(app: Application) : TemplateViewModel(app) {
 
@@ -11,8 +12,14 @@ class CanteenViewModel(app: Application) : TemplateViewModel(app) {
 
     val allOffers: LiveData<List<CanteenOffer>> = repo.allOffers
 
+    fun getOffersByPreference(): LiveData<List<CanteenOffer>> =
+        repo.getOffersByPreference()
+
 //    fun insertOffers(offers: List<CanteenOffer>) { doAsync { repo.insertOffers(offers) }}
     fun nukeOffers() { doAsync { repo.nukeOffers() }}
 
-    fun fetchOffers(onFinish: () -> Unit) { doAsync { parser.parse(onFinish) }}
+    fun fetchOffers(onRefreshUpdate: (status: Int) -> Unit, onFinish: () -> Unit) { doAsync { parser.parse(onRefreshUpdate, onFinish) }}
+
+    fun setPreference(pref: DietaryPreferences, newValue: Boolean) { repo.setPreference(pref, newValue) }
+    fun getPreference(pref: DietaryPreferences): Boolean = repo.getPreference(pref)
 }