Wizard: do not show validation error on parent module

idea/idea-new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/wizard/ui/secondStep/modulesEditor/ModulesEditorTree.kt

@@ -140,7 +140,9 @@ private class CellRenderer(private val context: Context, renderErrors: Boolean)
             if (renderErrors) {
                 if (setting is Module) context.read {
                     val validationResult = setting.validator.validate(this, setting)
-                    setError(validationResult as? ValidationResult.ValidationError)
+                    val error = validationResult.safeAs<ValidationResult.ValidationError>()
+                        ?.takeIf { it.target === setting }
+                    setError(error)
                 } else {
                     setError(null)
                 }

libraries/tools/new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/core/entity/SettingValidator.kt

@@ -78,6 +78,10 @@ sealed class ValidationResult {
     }
 }
 
+fun <V> SettingValidator<V>.withTarget(target: Any) = SettingValidator<V> { value ->
+    this.validate(value).withTarget(target)
+}
+
 infix fun ValidationResult.isSpecificError(error: ValidationResult.ValidationError) =
     this is ValidationResult.ValidationError && messages.firstOrNull() == error.messages.firstOrNull()
 

libraries/tools/new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/settings/buildsystem/Module.kt

@@ -44,9 +44,9 @@ class Module(
     val kind: ModuleKind
         get() = configurator.moduleKind
 
-    override val validator = moduleNameValidator and
+    override val validator = (moduleNameValidator and
             moduleConfiguratorValidator and
-            moduleTemplateValidator and
+            moduleTemplateValidator).withTarget(this) and
             subModulesValidator
 
     var subModules = subModules