[gnome-shell] js: Always use AppSystem to lookup apps

[Florian Müllner <fmuellner src gnome org>]

commit 66f9a9df81f7fabb6f6ecdbd465efaf597c6f828
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Mar 14 14:45:42 2020 +0100

    js: Always use AppSystem to lookup apps
    
    There is no good reason for bypassing the application cache in
    AppSystem and loading .desktop files again.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1093

 js/ui/appDisplay.js | 4 ++--
 js/ui/calendar.js   | 9 +++++----
 2 files changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index 461a48682c..62a99b9fe9 100644
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -1251,8 +1251,8 @@ var AppSearchProvider = class AppSearchProvider {
         let results = [];
         groups.forEach(group => {
             group = group.filter(appID => {
-                let app = Gio.DesktopAppInfo.new(appID);
-                return app && app.should_show();
+                const app = this._appSys.lookup_app(appID);
+                return app && app.app_info.should_show();
             });
             results = results.concat(group.sort(
                 (a, b) => usage.compare(a, b)
diff --git a/js/ui/calendar.js b/js/ui/calendar.js
index aa1c4558a5..5b2e947732 100644
--- a/js/ui/calendar.js
+++ b/js/ui/calendar.js
@@ -837,8 +837,9 @@ class EventsSection extends MessageList.MessageListSection {
         this._title.connect('clicked', this._onTitleClicked.bind(this));
         this._title.connect('key-focus-in', this._onKeyFocusIn.bind(this));
 
-        Shell.AppSystem.get_default().connect('installed-changed',
-                                              this._appInstalledChanged.bind(this));
+        this._appSys = Shell.AppSystem.get_default();
+        this._appSys.connect('installed-changed',
+            this._appInstalledChanged.bind(this));
         this._appInstalledChanged();
     }
 
@@ -933,9 +934,9 @@ class EventsSection extends MessageList.MessageListSection {
 
         let appInfo = this._getCalendarApp();
         if (appInfo.get_id() === 'org.gnome.Evolution.desktop') {
-            let app = Gio.DesktopAppInfo.new('evolution-calendar.desktop');
+            let app = this._appSys.lookup_app('evolution-calendar.desktop');
             if (app)
-                appInfo = app;
+                appInfo = app.app_info;
         }
         appInfo.launch([], global.create_app_launch_context(0, -1));
     }