IDEA-354490 small improvements

GitOrigin-RevId: 7689f2c636ad1a944bf72b29f81fcfc7fd03a157

platform/lang-impl/src/com/intellij/ide/structureView/newStructureView/StructureViewFloatingToolbar.kt

@@ -53,6 +53,7 @@ internal class StructureViewFloatingToolbar(
     init(ownerComponent)
     showingTime = 150
     hidingTime = 50
+    backgroundAlpha = 1F
     border = BorderFactory.createEmptyBorder()
   }
 }

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

@@ -40,7 +40,7 @@ class LogicalStructureViewModel private constructor(psiFile: PsiFile, editor: Ed
   }
 
   override fun isAlwaysLeaf(element: StructureViewTreeElement?): Boolean {
-    return element is ElementsBuilder.PropertyPsiElementStructureElement<*> || element is ElementsBuilder.PropertyStructureElement
+    return element is ElementsBuilder.PropertyStructureElement
   }
 
   override fun isAutoExpand(element: StructureViewTreeElement): Boolean {
@@ -307,7 +307,7 @@ private class ElementsBuilder {
     override fun getIcon(open: Boolean): Icon? = getPresentation().getIcon(open)
 
     override fun getChildrenBase(): Collection<StructureViewTreeElement> {
-      return emptyList() // getChildrenNodes (assembledModel, parentKey + "." + assembledModel.model.hashCode())
+      return getChildrenNodes(assembledModel)
     }
 
     override fun isAllowExtensions(): Boolean = false
@@ -335,7 +335,8 @@ private class ElementsBuilder {
     override fun getPresentation(): ItemPresentation = getPropertyPresentationData(grouper, assembledModel.model!!)
 
     override fun getChildren(): Array<TreeElement> {
-      return getChildrenNodes(assembledModel).toTypedArray()
+      //return getChildrenNodes(assembledModel).toTypedArray()
+      return emptyArray()
     }
 
     override fun equals(other: Any?): Boolean {