improve theme applicability checks

src/mol-theme/color/carbohydrate-symbol.ts

@@ -69,5 +69,5 @@ export const CarbohydrateSymbolColorThemeProvider: ColorTheme.Provider<Carbohydr
     factory: CarbohydrateSymbolColorTheme,
     getParams: getCarbohydrateSymbolColorThemeParams,
     defaultValues: PD.getDefaultValues(CarbohydrateSymbolColorThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure
+    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && ctx.structure.carbohydrates.elements.length > 0
 }

src/mol-theme/color/cross-link.ts

@@ -72,5 +72,5 @@ export const CrossLinkColorThemeProvider: ColorTheme.Provider<CrossLinkColorThem
     factory: CrossLinkColorTheme,
     getParams: getCrossLinkColorThemeParams,
     defaultValues: PD.getDefaultValues(CrossLinkColorThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure
+    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && ctx.structure.crossLinkRestraints.count > 0
 }

src/mol-theme/color/model-index.ts

@@ -64,5 +64,5 @@ export const ModelIndexColorThemeProvider: ColorTheme.Provider<ModelIndexColorTh
     factory: ModelIndexColorTheme,
     getParams: getModelIndexColorThemeParams,
     defaultValues: PD.getDefaultValues(ModelIndexColorThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure
+    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && ctx.structure.models.length > 1
 }

src/mol-theme/color/occupancy.ts

@@ -63,5 +63,5 @@ export const OccupancyColorThemeProvider: ColorTheme.Provider<OccupancyColorThem
     factory: OccupancyColorTheme,
     getParams: getOccupancyColorThemeParams,
     defaultValues: PD.getDefaultValues(OccupancyColorThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure
+    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && ctx.structure.models.some(m => m.atomicConformation.occupancy.isDefined)
 }

src/mol-theme/color/uncertainty.ts

@@ -67,5 +67,5 @@ export const UncertaintyColorThemeProvider: ColorTheme.Provider<UncertaintyColor
     factory: UncertaintyColorTheme,
     getParams: getUncertaintyColorThemeParams,
     defaultValues: PD.getDefaultValues(UncertaintyColorThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure
+    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && ctx.structure.models.some(m => m.atomicConformation.B_iso_or_equiv.isDefined || m.sourceData.data.ihm_sphere_obj_site.rmsf.isDefined)
 }

src/mol-theme/size/physical.ts

@@ -12,7 +12,7 @@ import { ParamDefinition as PD } from '../../mol-util/param-definition'
 import { ThemeDataContext } from '../../mol-theme/theme';
 
 const DefaultSize = 1
-const Description = 'Assigns a physical size.'
+const Description = 'Assigns a physical size, i.e. vdW radius for atoms or given radius for coarse spheres.'
 
 export const PhysicalSizeThemeParams = {}
 export type PhysicalSizeThemeParams = typeof PhysicalSizeThemeParams

src/mol-theme/size/uncertainty.ts

@@ -57,5 +57,5 @@ export const UncertaintySizeThemeProvider: SizeTheme.Provider<UncertaintySizeThe
     factory: UncertaintySizeTheme,
     getParams: getUncertaintySizeThemeParams,
     defaultValues: PD.getDefaultValues(UncertaintySizeThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure // TODO check if the structure has Uncertainty (B-factor, RMSF, ...) values
+    isApplicable: (ctx: ThemeDataContext) => !!ctx.structure && ctx.structure.models.some(m => m.atomicConformation.B_iso_or_equiv.isDefined || m.sourceData.data.ihm_sphere_obj_site.rmsf.isDefined)
 }