From 235ffa29dcd5f014ede8dfb5a6359e4c0d8c93fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Thu, 9 Apr 2020 12:50:39 +0200
Subject: [PATCH] calendar: Update events on changes

We track messages so that we can account for just added and removed
events instead of having to rebuild the entire list, however it's
also possible that the time or summary of an existing event changed.

Account for that by updating existing messages in-place.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1192
---
 js/ui/calendar.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/js/ui/calendar.js b/js/ui/calendar.js
index 9f22b092b..8346056c3 100644
--- a/js/ui/calendar.js
+++ b/js/ui/calendar.js
@@ -700,12 +700,11 @@ var Calendar = GObject.registerClass({
 var EventMessage = GObject.registerClass(
 class EventMessage extends MessageList.Message {
     _init(event, date) {
-        super._init('', event.summary);
+        super._init('', '');
 
-        this._event = event;
         this._date = date;
 
-        this.setTitle(this._formatEventTime());
+        this.update(event);
 
         this._icon = new St.Icon({ icon_name: 'x-office-calendar-symbolic' });
         this.setIcon(this._icon);
@@ -717,6 +716,13 @@ class EventMessage extends MessageList.Message {
         super.vfunc_style_changed();
     }
 
+    update(event) {
+        this._event = event;
+
+        this.setTitle(this._formatEventTime());
+        this.setBody(event.summary);
+    }
+
     _formatEventTime() {
         let periodBegin = _getBeginningOfDay(this._date);
         let periodEnd = _getEndOfDay(this._date);
@@ -900,6 +906,7 @@ class EventsSection extends MessageList.MessageListSection {
                 this._messageById.set(event.id, message);
                 this.addMessage(message, false);
             } else {
+                message.update(event);
                 this.moveMessage(message, i, false);
             }
         }