From 8d79f6f4c89a96475f5adbb13ea8673da4d81337 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 286aac1e1..f38544c8b 100644
--- a/js/ui/calendar.js
+++ b/js/ui/calendar.js
@@ -701,12 +701,11 @@ 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);
@@ -718,6 +717,13 @@ 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);
@@ -901,6 +907,7 @@ class EventsSection extends MessageList.MessageListSection {
                 this._messageById.set(event.id, message);
                 this.addMessage(message, false);
             } else {
+                message.update(event);
                 this.moveMessage(message, i, false);
             }
         }