removed unused HighlightEvent.prev

src/mol-canvas3d/canvas3d.ts

@@ -87,7 +87,7 @@ interface Canvas3D {
 const requestAnimationFrame = typeof window !== 'undefined' ? window.requestAnimationFrame : (f: (time: number) => void) => setImmediate(()=>f(Date.now()))
 
 namespace Canvas3D {
-    export interface HighlightEvent { current: Representation.Loci, prev: Representation.Loci, modifiers?: ModifiersKeys }
+    export interface HighlightEvent { current: Representation.Loci, modifiers?: ModifiersKeys }
     export interface ClickEvent { current: Representation.Loci, buttons: ButtonsType, modifiers: ModifiersKeys }
 
     export function fromCanvas(canvas: HTMLCanvasElement, props: Partial<Canvas3DProps> = {}) {

src/mol-canvas3d/helper/interaction-events.ts

@@ -59,7 +59,7 @@ export class Canvas3dInteractionHelper {
 
         const loci = this.getLoci(this.id);
         if (!Representation.Loci.areEqual(this.prevLoci, loci)) {
-            this.events.highlight.next({ current: loci, prev: this.prevLoci, modifiers: this.modifiers });
+            this.events.highlight.next({ current: loci, modifiers: this.modifiers });
             this.prevLoci = loci;
         }
     }
@@ -75,9 +75,8 @@ export class Canvas3dInteractionHelper {
     leave() {
         this.inside = false;
         if (this.prevLoci.loci !== EmptyLoci) {
-            const prev = this.prevLoci;
             this.prevLoci = Representation.Loci.Empty;
-            this.events.highlight.next({ current: this.prevLoci, prev });
+            this.events.highlight.next({ current: this.prevLoci });
         }
     }
 
@@ -99,7 +98,7 @@ export class Canvas3dInteractionHelper {
     modify(modifiers: ModifiersKeys) {
         if (this.prevLoci.loci === EmptyLoci || ModifiersKeys.areEqual(modifiers, this.modifiers)) return;
         this.modifiers = modifiers;
-        this.events.highlight.next({ current: this.prevLoci, prev: this.prevLoci, modifiers: this.modifiers });
+        this.events.highlight.next({ current: this.prevLoci, modifiers: this.modifiers });
     }
 
     dispose() {

src/mol-plugin/context.ts

@@ -73,7 +73,7 @@ export class PluginContext {
             isUpdating: this.ev.behavior<boolean>(false)
         },
         canvas3d: {
-            highlight: this.ev.behavior<Canvas3D.HighlightEvent>({ current: Representation.Loci.Empty, prev: Representation.Loci.Empty }),
+            highlight: this.ev.behavior<Canvas3D.HighlightEvent>({ current: Representation.Loci.Empty }),
             click: this.ev.behavior<Canvas3D.ClickEvent>({ current: Representation.Loci.Empty, modifiers: ModifiersKeys.None, buttons: 0 })
         },
         labels: {