add a registry option for Find in Path to drill into excluded dirs (IDEA-169299)

java/java-tests/testSrc/com/intellij/find/impl/FindManagerTest.java

@@ -38,6 +38,7 @@ import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.util.ProperTextRange;
 import com.intellij.openapi.util.Ref;
 import com.intellij.openapi.util.io.FileUtil;
+import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.LocalFileSystem;
 import com.intellij.openapi.vfs.VfsUtil;
@@ -711,6 +712,11 @@ public class FindManagerTest extends DaemonAnalyzerTestCase {
     findModel.setProjectScope(false);
     findModel.setDirectoryName(excluded.getPath());
     assertSize(2, findUsages(findModel));
+
+    findModel.setDirectoryName(root.getPath());
+    assertSize(0, findUsages(findModel));
+    Registry.get("find.search.in.excluded.dirs").setValue(true, getTestRootDisposable());
+    assertSize(2, findUsages(findModel));
   }
 
   public void testFindInJavaDocs() {

platform/lang-impl/src/com/intellij/find/impl/FindInProjectTask.java

@@ -317,7 +317,7 @@ class FindInProjectTask {
       }
     }
     else if (myDirectory != null) {
-      final boolean checkExcluded = !ProjectFileIndex.SERVICE.getInstance(myProject).isExcluded(myDirectory);
+      boolean checkExcluded = !ProjectFileIndex.SERVICE.getInstance(myProject).isExcluded(myDirectory) && !Registry.is("find.search.in.excluded.dirs");
       VirtualFileVisitor.Option limit = VirtualFileVisitor.limit(myFindModel.isWithSubdirectories() ? -1 : 1);
       VfsUtilCore.visitChildrenRecursively(myDirectory, new VirtualFileVisitor(limit) {
         @Override

platform/util/resources/misc/registry.properties

@@ -347,6 +347,9 @@ ide.suggest.file.when.creating.filename.like.directory.description=When creating
 find.search.in.project.files=true
 find.search.in.project.files.description=Whether Find in Path searches in .idea, *.ipr, *.iml, *.iws files 
 
+find.search.in.excluded.dirs=false
+find.search.in.excluded.dirs.description=Whether Find in Path searches in excluded subdirectories of the scope directory
+
 structureView.coalesceTime=500
 
 keymap.show.alias.actions=false

platform/util/src/com/intellij/openapi/util/registry/RegistryValue.java

@@ -207,6 +207,39 @@ public class RegistryValue {
     myChangedSinceStart = true;
   }
 
+  public void setValue(boolean value, Disposable parentDisposable) {
+    final boolean prev = asBoolean();
+    setValue(value);
+    Disposer.register(parentDisposable, new Disposable() {
+      @Override
+      public void dispose() {
+        setValue(prev);
+      }
+    });
+  }
+
+  public void setValue(int value, Disposable parentDisposable) {
+    final int prev = asInteger();
+    setValue(value);
+    Disposer.register(parentDisposable, new Disposable() {
+      @Override
+      public void dispose() {
+        setValue(prev);
+      }
+    });
+  }
+
+  public void setValue(String value, Disposable parentDisposable) {
+    final String prev = asString();
+    setValue(value);
+    Disposer.register(parentDisposable, new Disposable() {
+      @Override
+      public void dispose() {
+        setValue(prev);
+      }
+    });
+  }
+
   boolean isChangedSinceAppStart() {
     return myChangedSinceStart;
   }