Users should be able to select points (not just lines) (#97)

* update selection datastructure to accomodate more selection metadata

* Users should be able to select points (not just lines)

src/hooks/useSetCursor.ts

@@ -1,15 +1,21 @@
-import { useStore, Range } from '../useStore'
+import { useStore, Selection, Selections } from '../useStore'
 
-export function useSetCursor(sourceRange: Range) {
+export function useSetCursor(
+  sourceRange: Selection['range'],
+  type: Selection['type'] = 'default'
+) {
   const { setCursor, selectionRanges, isShiftDown } = useStore((s) => ({
     setCursor: s.setCursor,
     selectionRanges: s.selectionRanges,
     isShiftDown: s.isShiftDown,
   }))
   return () => {
-    const ranges = isShiftDown
-      ? [...selectionRanges, sourceRange]
-      : [sourceRange]
-    setCursor(ranges)
+    const selections: Selections = {
+      ...selectionRanges,
+      codeBasedSelections: isShiftDown
+        ? [...selectionRanges.codeBasedSelections, { range: sourceRange, type }]
+        : [{ range: sourceRange, type }],
+    }
+    setCursor(selections)
   }
 }