cleanup bootstrap: obsolete API

GitOrigin-RevId: f02c228279b9a94a314e6b6052be7763e015ea25

platform/platform-impl/bootstrap/src/com/intellij/idea/IdeStarter.kt

@@ -1,6 +1,4 @@
 // Copyright 2000-2025 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
-@file:Suppress("ReplaceGetOrSet")
-
 package com.intellij.idea
 
 import com.intellij.accessibility.enableScreenReaderSupportIfNeeded
@@ -30,7 +28,6 @@ import com.intellij.openapi.diagnostic.thisLogger
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.IntellijInternalApi
 import com.intellij.openapi.util.SystemInfo
-import com.intellij.openapi.util.SystemInfoRt
 import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.util.registry.RegistryManager
 import com.intellij.openapi.util.registry.migrateRegistryToAdvSettings
@@ -44,6 +41,7 @@ import com.intellij.platform.ide.diagnostic.startUpPerformanceReporter.FUSProjec
 import com.intellij.ui.mac.touchbar.TouchbarSupport
 import com.intellij.ui.updateAppWindowIcon
 import com.intellij.util.io.URLUtil.SCHEME_SEPARATOR
+import com.intellij.util.system.OS
 import kotlinx.coroutines.*
 import org.jetbrains.annotations.ApiStatus
 import java.nio.file.Path
@@ -290,13 +288,12 @@ private fun postOpenUiTasks(scope: CoroutineScope) {
     updateAppWindowIcon(JOptionPane.getRootFrame())
   }
 
-  if (SystemInfoRt.isMac) {
-    @Suppress("GrazieInspection")
+  if (OS.CURRENT == OS.macOS) {
     scope.launch(CoroutineName("mac touchbar on app init")) {
       TouchbarSupport.onApplicationLoaded()
     }
   }
-  else if (SystemInfoRt.isUnix && SystemInfo.isJetBrainsJvm) {
+  else if (OS.CURRENT != OS.Windows && SystemInfo.isJetBrainsJvm) {
     scope.launch(CoroutineName("input method disabling on Linux")) {
       disableInputMethodsIfPossible()
     }
@@ -352,7 +349,7 @@ private fun linksToActions(errors: MutableList<HtmlChunk>): Collection<AnAction>
 
   while (!errors.isEmpty()) {
     val builder = StringBuilder()
-    errors.get(errors.lastIndex).appendTo(builder)
+    errors[errors.lastIndex].appendTo(builder)
     val error = builder.toString()
 
     if (error.startsWith(link)) {

platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/ApplicationLoader.kt

@@ -40,7 +40,6 @@ import com.intellij.openapi.extensions.impl.ExtensionsAreaImpl
 import com.intellij.openapi.extensions.useOrLogError
 import com.intellij.openapi.keymap.KeymapManager
 import com.intellij.openapi.updateSettings.impl.UpdateSettings
-import com.intellij.openapi.util.SystemInfoRt
 import com.intellij.openapi.util.SystemPropertyBean
 import com.intellij.openapi.util.io.OSAgnosticPathUtil
 import com.intellij.platform.diagnostic.telemetry.TelemetryManager
@@ -54,6 +53,7 @@ import com.intellij.ui.ExperimentalUI
 import com.intellij.util.PlatformUtils
 import com.intellij.util.io.URLUtil
 import com.intellij.util.io.createDirectories
+import com.intellij.util.system.OS
 import com.jetbrains.JBR
 import kotlinx.coroutines.*
 import org.jetbrains.annotations.ApiStatus.Internal
@@ -315,7 +315,7 @@ private suspend fun preloadNonHeadlessServices(app: ApplicationImpl, initLafJob:
     }
 
     // https://youtrack.jetbrains.com/issue/IDEA-341318
-    if (SystemInfoRt.isLinux && System.getProperty("idea.linux.scale.workaround", "false").toBoolean()) {
+    if (OS.CURRENT == OS.Linux && System.getProperty("idea.linux.scale.workaround", "false").toBoolean()) {
       // ActionManager can use UISettings (KeymapManager doesn't use it but just to be sure)
       initLafJob.join()
     }

platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/LanguageAndRegionDialog.kt

@@ -16,7 +16,6 @@ import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.ui.DialogWrapper
 import com.intellij.openapi.ui.popup.JBPopupFactory
 import com.intellij.openapi.ui.popup.util.PopupUtil
-import com.intellij.openapi.util.SystemInfoRt
 import com.intellij.ui.awt.RelativePoint
 import com.intellij.ui.components.JBLabel
 import com.intellij.ui.components.panels.VerticalLayout
@@ -24,6 +23,7 @@ import com.intellij.ui.dsl.builder.Align
 import com.intellij.ui.dsl.builder.panel
 import com.intellij.ui.popup.list.SelectablePanel
 import com.intellij.util.SystemProperties
+import com.intellij.util.system.OS
 import com.intellij.util.text.DateTimeFormatManager
 import com.intellij.util.ui.*
 import com.sun.jna.platform.win32.Advapi32Util
@@ -224,7 +224,7 @@ internal fun getLanguageAndRegionDialogIfNeeded(): (suspend () -> Boolean)? {
   val locale = Locale.getDefault()
   val matchingLocale = languageMapping.keys.find { language -> languageMapping[language]?.any { locale.toLanguageTag().contains(it) } == true } ?: Locale.ENGLISH
   var matchingRegion = Region.NOT_SET
-  if (SystemInfoRt.isWindows) {
+  if (OS.CURRENT == OS.Windows) {
     try {
       val region = Advapi32Util.registryGetStringValue(WinReg.HKEY_CURRENT_USER, "Control Panel\\International\\Geo", "Name")
       matchingRegion = regionMapping.keys.find { region == regionMapping[it] } ?: Region.NOT_SET
@@ -233,7 +233,7 @@ internal fun getLanguageAndRegionDialogIfNeeded(): (suspend () -> Boolean)? {
       logger<LanguageAndRegionDialog>().warn("Unable to resolve region from registry", e)
     }
   }
-  else if (SystemInfoRt.isMac) {
+  else if (OS.CURRENT == OS.macOS) {
     matchingRegion = regionMapping.keys.find { locale.country == regionMapping[it] }
                      ?: getLocaleFromGeneralPrefMacOs(SystemProperties.getUserHome())
                      ?: getLocaleFromGeneralPrefMacOs("")
@@ -271,4 +271,4 @@ private fun getLocaleFromGeneralPrefMacOs(rootPath: String): Region? {
     logger<LanguageAndRegionDialog>().warn("Unable to resolve region from $fullPath", e)
     return null
   }
-}
+}

platform/platform-impl/bootstrap/src/com/intellij/platform/ide/bootstrap/ui.kt

@@ -16,7 +16,6 @@ import com.intellij.openapi.application.ex.ApplicationInfoEx
 import com.intellij.openapi.application.impl.AWTExceptionHandler
 import com.intellij.openapi.application.setUserInteractiveQosForEdt
 import com.intellij.openapi.diagnostic.logger
-import com.intellij.openapi.util.SystemInfoRt
 import com.intellij.openapi.wm.WeakFocusStackManager
 import com.intellij.platform.diagnostic.telemetry.impl.span
 import com.intellij.ui.AppUIUtil
@@ -25,6 +24,7 @@ import com.intellij.ui.icons.CoreIconManager
 import com.intellij.ui.isWindowIconAlreadyExternallySet
 import com.intellij.ui.scale.JBUIScale
 import com.intellij.ui.updateAppWindowIcon
+import com.intellij.util.system.OS
 import com.intellij.util.ui.RawSwingDispatcher
 import com.intellij.util.ui.StartupUiUtil
 import com.intellij.util.ui.accessibility.ScreenReader
@@ -90,7 +90,7 @@ private suspend fun initLafAndScale(isHeadless: Boolean, preloadFontJob: Job?) {
     }
 
     // we don't need Idea LaF to show splash, but we do need some base LaF to compute system font data (see below for what)
-    if (SystemInfoRt.isLinux) {
+    if (OS.CURRENT == OS.Linux) {
       preloadFontJob?.join()
     }
   }
@@ -104,7 +104,7 @@ private suspend fun initLafAndScale(isHeadless: Boolean, preloadFontJob: Job?) {
 
   // to compute the system scale factor on non-macOS (JRE HiDPI is not enabled), we need to know system font data,
   // and to compute system font data, we need to know `Label.font` UI default (that's why we compute base LaF first)
-  if (!isHeadless && !SystemInfoRt.isMac) {
+  if (!isHeadless && OS.CURRENT != OS.macOS) {
     JBUIScale.preload {
       runActivity("base LaF defaults getting") { baseLaF.defaults }
     }
@@ -115,7 +115,7 @@ internal fun scheduleInitAwtToolkit(scope: CoroutineScope, lockSystemDirsJob: Jo
   val task = scope.launch {
     // this should happen before UI initialization - if we're not going to show the UI (in case another IDE instance is already running),
     // we shouldn't initialize AWT toolkit to avoid unnecessary focus stealing and space switching on macOS.
-    if (SystemInfoRt.isMac) {
+    if (OS.CURRENT == OS.macOS) {
       lockSystemDirsJob.join()
     }
 
@@ -197,7 +197,7 @@ private suspend fun replaceIdeEventQueue(isHeadless: Boolean) {
 private fun blockATKWrapper() {
   // the registry must not be used here, because this method is called before application loading
   @Suppress("SpellCheckingInspection")
-  if (!SystemInfoRt.isLinux || !System.getProperty("linux.jdk.accessibility.atkwrapper.block", "true").toBoolean()) {
+  if (OS.CURRENT != OS.Linux || !System.getProperty("linux.jdk.accessibility.atkwrapper.block", "true").toBoolean()) {
     return
   }