Show more on events in info widget (#335)

CHANGELOG.md

@@ -30,6 +30,7 @@
 - Replace "(channels dropped)" suffix with "(channels picked)" and use `pick_channels` instead of `drop_channels` ([#285](https://github.com/cbrnr/mnelab/pull/285) by [Florian Hofer](https://github.com/hofaflo))
 - The overwrite confirmation dialog is now fail-safe because it defaults to creating a new dataset ([#304](https://github.com/cbrnr/mnelab/pull/304) by [Clemens Brunner](https://github.com/cbrnr))
 - Show signal length in hours, minutes, and seconds ([#334](https://github.com/cbrnr/mnelab/pull/334) by [Clemens Brunner](https://github.com/cbrnr))
+- Show unique event counts if there are no more than seven unique event types in the main window ([#335](https://github.com/cbrnr/mnelab/pull/335) by [Clemens Brunner](https://github.com/cbrnr))
 
 ### Fixed
 - Fix splitting name and extension for compatibility with Python 3.8 ([#252](https://github.com/cbrnr/mnelab/pull/252) by [Johan Medrano](https://github.com/yop0))

mnelab/model.py

@@ -345,14 +345,17 @@ def get_info(self):
         chans = ", ".join([" ".join([str(v), k.upper()]) for k, v in chans])
 
         if events is not None and events.shape[0] > 0:
-            nevents = events.shape[0]
-            unique = [str(e) for e in sorted(set(events[:, 2]))]
-            if len(unique) > 20:  # do not show all events
-                first = ", ".join(unique[:10])
-                last = ", ".join(unique[-10:])
-                events = f"{nevents} ({first + ', ..., ' + last})"
+            unique, counts = np.unique(events[:, 2], return_counts=True)
+            events = f"{events.shape[0]} ("
+            if len(unique) < 8:
+                events += ", ".join([f"{u}: {c}" for u, c in zip(unique, counts)])
+            elif 8 <= len(unique) <= 12:
+                events += ", ".join([f"{u}" for u in unique])
             else:
-                events = f"{nevents} ({', '.join(unique)})"
+                first = ", ".join([f"{u}" for u in unique[:6]])
+                last = ", ".join([f"{u}" for u in unique[-6:]])
+                events += f"{first}, ..., {last}"
+            events += ")"
         else:
             events = "-"