refactor: encapsulate running code in a background thread from a blocking context

This will make refactoring to coroutines easier in the future.

Author: lppedd

src/main/kotlin/com/github/lppedd/cc/CCExtensions.kt

@@ -407,6 +407,11 @@ internal inline fun runInWriteActionIfNeeded(noinline block: () -> Unit) {
   }
 }
 
+@InlineOnly
+internal inline fun runInBackgroundThread(noinline block: () -> Unit) {
+  ApplicationManager.getApplication().executeOnPooledThread(block)
+}
+
 @InlineOnly
 internal inline fun invokeLaterOnEdt(noinline block: () -> Unit) {
   ApplicationManager.getApplication().invokeLater(block)

src/main/kotlin/com/github/lppedd/cc/configuration/CCMainConfigurable.kt

@@ -3,7 +3,7 @@ package com.github.lppedd.cc.configuration
 import com.github.lppedd.cc.CC
 import com.github.lppedd.cc.CCBundle
 import com.github.lppedd.cc.invokeLaterOnEdt
-import com.intellij.openapi.application.ApplicationManager
+import com.github.lppedd.cc.runInBackgroundThread
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.options.SearchableConfigurable
 import com.intellij.openapi.project.Project
@@ -38,7 +38,7 @@ internal class CCMainConfigurable(private val project: Project) : SearchableConf
     gui.customTokensFilePath = configService.customFilePath
     gui.customCoAuthorsFilePath = configService.customCoAuthorsFilePath
 
-    ApplicationManager.getApplication().executeOnPooledThread {
+    runInBackgroundThread {
       val tokensService = CCTokensService.getInstance(project)
       val tokens = when (val result = tokensService.getTokens()) {
         is TokensResult.Success -> result.tokens
@@ -81,7 +81,7 @@ internal class CCMainConfigurable(private val project: Project) : SearchableConf
     configService.customCoAuthorsFilePath = gui.customCoAuthorsFilePath
     configService.customFilePath = gui.customTokensFilePath
 
-    ApplicationManager.getApplication().executeOnPooledThread {
+    runInBackgroundThread {
       val tokensService = CCTokensService.getInstance(project)
       val result = tokensService.getTokens()
 

src/main/kotlin/com/github/lppedd/cc/vcs/VcsStartupActivity.kt

@@ -1,7 +1,7 @@
 package com.github.lppedd.cc.vcs
 
 import com.github.lppedd.cc.CCRegistry
-import com.intellij.openapi.application.ApplicationManager
+import com.github.lppedd.cc.runInBackgroundThread
 import com.intellij.openapi.project.DumbAware
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.startup.ProjectActivity
@@ -15,7 +15,7 @@ internal class VcsStartupActivity : ProjectActivity, DumbAware {
   override suspend fun execute(project: Project) {
     val vcsConfigListener = VcsListener {
       if (CCRegistry.isVcsSupportEnabled()) {
-        ApplicationManager.getApplication().executeOnPooledThread {
+        runInBackgroundThread {
           val vcsHandler = VcsService.getInstance(project)
           vcsHandler.refresh()
         }