IDEA-372093 Structure view: endless loading after start of IDEA

(cherry picked from commit 5a00096980eefcad6391d3b821e4075b09d7a1ac)

IJ-CR-169146

GitOrigin-RevId: d60f72d26b09a18d0e0dc9828a8a20aa981d75db

platform/lang-impl/src/com/intellij/ide/impl/StructureViewWrapperImpl.kt

@@ -165,9 +165,13 @@ class StructureViewWrapperImpl(
             }
           }
         }
-        if (ExperimentalUI.isNewUI() && myStructureView is StructureViewComponent) {
-          val additional = (myStructureView as StructureViewComponent).dotsActions
-          myToolWindow.setAdditionalGearActions(additional)
+        if (ExperimentalUI.isNewUI()) {
+          (myStructureView as? StructureViewComponent)?.let {
+            myToolWindow.setAdditionalGearActions(it.dotsActions)
+          }
+          (myStructureView as? StructureViewComposite)?.structureViews?.forEach {
+            (it.structureView as? StructureViewComponent)?.let { sv -> myToolWindow.setAdditionalGearActions(sv.dotsActions) }
+          }
         }
       }
     })

platform/structure-view-impl/api-dump-experimental.txt

@@ -30,6 +30,7 @@
 - f:getModel():java.lang.Object
 - f:getParent():com.intellij.ide.structureView.logical.model.LogicalStructureAssembledModel
 - f:getProject():com.intellij.openapi.project.Project
+- f:hasChildren():Z
 - hashCode():I
 *f:com.intellij.ide.structureView.logical.model.LogicalStructureAssembledModel$Companion
 - f:getInstance(com.intellij.openapi.project.Project,java.lang.Object):com.intellij.ide.structureView.logical.model.LogicalStructureAssembledModel

platform/structure-view-impl/src/com/intellij/ide/structureView/logical/PhysicalAndLogicalStructureViewBuilder.kt

@@ -7,7 +7,7 @@ import com.intellij.ide.structureView.logical.impl.LogicalStructureViewService.C
 import com.intellij.idea.AppMode
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.EDT
-import com.intellij.openapi.application.readAction
+import com.intellij.openapi.application.smartReadAction
 import com.intellij.openapi.application.writeIntentReadAction
 import com.intellij.openapi.client.currentSession
 import com.intellij.openapi.editor.Editor
@@ -45,7 +45,7 @@ class PhysicalAndLogicalStructureViewBuilder(
   }
 
   override suspend fun createStructureViewSuspend(fileEditor: FileEditor?, project: Project): StructureView {
-    val logicalBuilder = readAction {
+    val logicalBuilder = smartReadAction(project) {
       getInstance(psiFile.project).getLogicalStructureBuilder(psiFile)
     }
     return withContext(Dispatchers.EDT) {

platform/structure-view-impl/src/com/intellij/ide/structureView/logical/impl/LogicalStructureViewService.kt

@@ -1,10 +1,13 @@
 // Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.ide.structureView.logical.impl
 
+import com.intellij.ide.structureView.StructureViewBuilder
+import com.intellij.ide.structureView.StructureViewModel
+import com.intellij.ide.structureView.TreeBasedStructureViewBuilder
 import com.intellij.ide.structureView.logical.model.LogicalStructureAssembledModel
-import com.intellij.ide.structureView.*
 import com.intellij.openapi.components.Service
 import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.progress.ProcessCanceledException
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiFile
 
@@ -21,8 +24,9 @@ class LogicalStructureViewService(
     if (!psiFile.isValid) return null
     val assembledModel = LogicalStructureAssembledModel.getInstance(project, psiFile)
     try {
-      if (assembledModel.getChildren().isEmpty()) return null
-    } catch (_: Throwable) {
+      if (!assembledModel.hasChildren()) return null
+    } catch (e: Throwable) {
+      if (e is ProcessCanceledException) throw e
       return null
     }
     return object: TreeBasedStructureViewBuilder() {

platform/structure-view-impl/src/com/intellij/ide/structureView/logical/model/LogicalStructureAssembledModel.kt

@@ -43,6 +43,16 @@ class LogicalStructureAssembledModel<T> private constructor(
     return result
   }
 
+  fun hasChildren(): Boolean {
+    if (model is LogicalContainer<*> && model.getElements().isNotEmpty()) {
+      return true
+    }
+    for (provider in LogicalStructureElementsProvider.getProviders(model!!)) {
+      if (provider is ExternalElementsProvider<*, *> || provider.getElements(model).isNotEmpty()) return true
+    }
+    return false
+  }
+
   internal fun hasSameModelParent(): Boolean {
     var parentTmp = parent
     while (parentTmp != null) {