From 95eb44af0690f2d2570145e4dc39cdeaca85bde8 Mon Sep 17 00:00:00 2001
From: "Vladislav.Soroka" <Vladislav.Soroka@jetbrains.com>
Date: Fri, 5 Jun 2015 15:07:59 +0300
Subject: [PATCH] gradle: IDEA-129535 IDEA marks all classes inside buildSrc
 with "Class <name> already exists in <package>"

---
 .../gradle/config/GradleClassFinder.java      | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/plugins/gradle/src/org/jetbrains/plugins/gradle/config/GradleClassFinder.java b/plugins/gradle/src/org/jetbrains/plugins/gradle/config/GradleClassFinder.java
index 17c7add62437..808c2cb1f860 100644
--- a/plugins/gradle/src/org/jetbrains/plugins/gradle/config/GradleClassFinder.java
+++ b/plugins/gradle/src/org/jetbrains/plugins/gradle/config/GradleClassFinder.java
@@ -19,8 +19,13 @@ package org.jetbrains.plugins.gradle.config;
 import com.intellij.ide.highlighter.JavaFileType;
 import com.intellij.openapi.externalSystem.psi.search.ExternalModuleBuildGlobalSearchScope;
 import com.intellij.openapi.project.Project;
+import com.intellij.openapi.roots.ProjectFileIndex;
+import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.NonClasspathClassFinder;
+import com.intellij.psi.PsiClass;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.search.EverythingGlobalScope;
 import com.intellij.psi.search.GlobalSearchScope;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -61,4 +66,20 @@ public class GradleClassFinder extends NonClasspathClassFinder {
     }
     return myBuildClasspathManager.getAllClasspathEntries();
   }
+
+  @Nullable
+  @Override
+  public Condition<PsiClass> getClassesFilter(@NotNull final GlobalSearchScope scope) {
+    return new Condition<PsiClass>() {
+      @Override
+      public boolean value(PsiClass aClass) {
+        if (scope instanceof ExternalModuleBuildGlobalSearchScope || scope instanceof EverythingGlobalScope) {
+          return true;
+        }
+        PsiFile containingFile = aClass.getContainingFile();
+        VirtualFile file = containingFile != null ? containingFile.getVirtualFile() : null;
+        return file == null || !(ProjectFileIndex.SERVICE.getInstance(myProject).isInContent(file));
+      }
+    };
+  }
 }
\ No newline at end of file