From b2cd229d1734a75cff773c6d456d17c751fd907b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20M=C3=A4der?= <t.s.maeder@gmail.com>
Date: Thu, 4 Jul 2024 18:01:45 +0200
Subject: [PATCH] Make sure UI loads when minimized.
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Fixes #13798

Contributed on behalf of STMicroelectronics

Signed-off-by: Thomas Mäder <t.s.maeder@gmail.com>
---
 packages/core/src/browser/shell/split-panels.ts        |  7 ++++---
 .../src/electron-main/electron-main-application.ts     | 10 ++++++++--
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/packages/core/src/browser/shell/split-panels.ts b/packages/core/src/browser/shell/split-panels.ts
index cb3de57c26dd7..d9f59bdf4a97a 100644
--- a/packages/core/src/browser/shell/split-panels.ts
+++ b/packages/core/src/browser/shell/split-panels.ts
@@ -91,13 +91,14 @@ export class SplitPositionHandler {
             move.resolve = resolve;
             move.reject = reject;
             if (this.splitMoves.length === 0) {
-                window.requestAnimationFrame(this.animationFrame.bind(this));
+                setTimeout(this.animationFrame.bind(this), 10);
             }
             this.splitMoves.push(move);
         });
     }
 
-    protected animationFrame(time: number): void {
+    protected animationFrame(): void {
+        const time = Date.now();
         const move = this.splitMoves[this.currentMoveIndex];
         let rejectedOrResolved = false;
         if (move.ended || move.referenceWidget && move.referenceWidget.isHidden) {
@@ -133,7 +134,7 @@ export class SplitPositionHandler {
             this.currentMoveIndex = 0;
         }
         if (this.splitMoves.length > 0) {
-            window.requestAnimationFrame(this.animationFrame.bind(this));
+            setTimeout(this.animationFrame.bind(this));
         }
     }
 
diff --git a/packages/core/src/electron-main/electron-main-application.ts b/packages/core/src/electron-main/electron-main-application.ts
index b004fd444d07a..5a895f7ca2221 100644
--- a/packages/core/src/electron-main/electron-main-application.ts
+++ b/packages/core/src/electron-main/electron-main-application.ts
@@ -15,8 +15,10 @@
 // *****************************************************************************
 
 import { inject, injectable, named } from 'inversify';
-import { screen, app, BrowserWindow, WebContents, Event as ElectronEvent, BrowserWindowConstructorOptions, nativeImage,
-    nativeTheme, shell, dialog } from '../../electron-shared/electron';
+import {
+    screen, app, BrowserWindow, WebContents, Event as ElectronEvent, BrowserWindowConstructorOptions, nativeImage,
+    nativeTheme, shell, dialog
+} from '../../electron-shared/electron';
 import * as path from 'path';
 import { Argv } from 'yargs';
 import { AddressInfo } from 'net';
@@ -350,6 +352,9 @@ export class ElectronMainApplication {
             alwaysOnTop: true,
             show: false,
             transparent: true,
+            webPreferences: {
+                backgroundThrottling: false
+            }
         });
 
         if (this.isShowWindowEarly()) {
@@ -458,6 +463,7 @@ export class ElectronMainApplication {
                 // Setting the following option to `true` causes some features to break, somehow.
                 // Issue: https://github.com/eclipse-theia/theia/issues/8577
                 nodeIntegrationInWorker: false,
+                backgroundThrottling: false,
                 preload: path.resolve(this.globals.THEIA_APP_PROJECT_PATH, 'lib', 'frontend', 'preload.js').toString()
             },
             ...this.config.electron?.windowOptions || {},