Updates to comment location

src/prosemirror/plugins/comments.ts

@@ -152,17 +152,24 @@ function reducer(tr: Transaction, state: CommentState): CommentState {
   });
   const action = tr.getMeta(key) as (CommentAction & { docId?: string }) | undefined;
   const { selectedComment } = state;
+  // The docId might be updated by the action (unlikely)
   const docId = action?.docId ?? state.docId;
+  if (tr.getMeta('addToHistory') === false) {
+    // This is used in `prosemirror-collab`, other clients should not change our decoration state
+    // This early exits with only updating the mapped decorations
+    return { docId, selectedComment, decorations: nextDecorations };
+  }
   if (!action) {
     // Check if we are in a comment!
     const around = decorations.find(tr.selection.from, tr.selection.to);
-    if (around.length === 0) {
+    if (around.length === 0 || !tr.selection.empty) {
       // We are not in a comment, and the action to select does not exist
       const hasSelectedComment = selectors.selectedSidenote(store.getState(), docId);
       if (hasSelectedComment) store.dispatch(actions.deselectSidenote(docId));
       const selected = updateSelectedDecorations(nextDecorations, null, tr.doc);
       return { docId, selectedComment: null, decorations: selected };
     }
+    // Otherwise, send a select action to sidenotes as we change state.selection!
     const { id, domId } = around[0].spec as DecorationSpec;
     const isSelected = selectors.isSidenoteSelected(store.getState(), docId, id);
     if (!isSelected) store.dispatch(actions.selectAnchor(docId, domId));

src/prosemirror/plugins/selection.tsx

@@ -9,17 +9,15 @@ import { opts } from '../../connect';
 class SelectionControl {
   dom: HTMLDivElement;
 
-  constructor(view: EditorView, stateKey: string) {
+  constructor(view: EditorView, stateKey: any) {
     this.dom = document.createElement('div');
     this.dom.className = 'selection-control';
     ReactDOM.render(
       <Card style={{ borderRadius: '50%' }}>
         <IconButton
           color="primary"
-          aria-label="add comment"
-          onClick={() => {
-            opts.addComment(stateKey, view);
-          }}
+          aria-label="Add Comment"
+          onClick={() => opts.addComment(stateKey, view)}
         >
           <CommentIcon />
         </IconButton>
@@ -31,27 +29,26 @@ class SelectionControl {
   }
 
   update(view: EditorView, lastState: EditorState | null) {
-    const { state } = view;
-    if (lastState && lastState.selection.eq?.(state.selection)) return;
+    const { selection } = view.state;
+    if (lastState?.selection.eq?.(selection)) return;
 
     // Hide the tooltip if the selection is empty
-    if (state.selection.empty) {
+    if (selection.empty) {
       this.dom.style.display = 'none';
       return;
     }
 
     // Otherwise, reposition it and update its content
     this.dom.style.display = '';
-    const { from, to } = state.selection;
+    // Use the first place you put the anchor, so the selection doesn't jump around
+    const { anchor } = selection;
     // These are in screen coordinates
-    const start = view.coordsAtPos(from);
+    const start = view.coordsAtPos(anchor);
     // The box in which the tooltip is positioned, to use as base
     if (!this.dom.offsetParent) {
       return;
     }
     const box = this.dom.offsetParent.getBoundingClientRect();
-    // Find a center-ish x position from the selection endpoints (when
-    // crossing lines, end may be more to the left)
     this.dom.style.bottom = `${box.bottom - start.top - 30}px`;
   }