1 files changed, 17 insertions, 0 deletions
diff --git a/src/client/views/nodes/formattedText/RichTextMenu.tsx b/src/client/views/nodes/formattedText/RichTextMenu.tsx
index dc2c06701..b5d0f28d8 100644
--- a/src/client/views/nodes/formattedText/RichTextMenu.tsx
+++ b/src/client/views/nodes/formattedText/RichTextMenu.tsx
@@ -318,6 +318,23 @@ export class RichTextMenu extends AntimodeMenu<AntimodeMenuProps> {
         });
     }
 
+    elideSelection = (txstate: EditorState | undefined = undefined, visibility = false) => {
+        const state = txstate ?? this.view?.state;
+        if (!state || state.selection.empty) return false;
+        const mark = state.schema.marks.summarize.create();
+        const tr = state.tr.addMark(state.tr.selection.from, state.selection.to, mark);
+        const text = tr.selection.content();
+        const elideNode = state.schema.nodes.summary.create({ visibility, text, textslice: text.toJSON() });
+        const summary = tr.replaceSelectionWith(elideNode).removeMark(tr.selection.from - 1, tr.selection.from, mark);
+        const expanded = () => {
+            const endOfElidableText = summary.selection.to + text.content.size;
+            const res = summary.insert(summary.selection.to, text.content).insert(endOfElidableText, state.schema.nodes.paragraph.create({}));
+            return res.setSelection(new TextSelection(res.doc.resolve(endOfElidableText + 1)));
+        };
+        this.view?.dispatch?.(visibility ? expanded() : summary);
+        return true;
+    };
+
     toggleNoAutoLinkAnchor = () => {
         if (this.view) {
             const mark = this.view.state.schema.mark(this.view.state.schema.marks.noAutoLinkAnchor);