From 369aebd0a3f0a3c9582d4a6e9e2d75bade08b9fa Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Mon, 2 Apr 2012 14:11:38 +0200
Subject: [PATCH] a registry key for IDEA-83547 "Show implementations" does not
 show derived interfaces

---
 .../codeInsight/navigation/ClassImplementationsSearch.java | 7 ++++++-
 .../platform-resources-en/src/misc/registry.properties     | 3 +++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/java/java-impl/src/com/intellij/codeInsight/navigation/ClassImplementationsSearch.java b/java/java-impl/src/com/intellij/codeInsight/navigation/ClassImplementationsSearch.java
index 537f2ff19087..a19630dad65c 100644
--- a/java/java-impl/src/com/intellij/codeInsight/navigation/ClassImplementationsSearch.java
+++ b/java/java-impl/src/com/intellij/codeInsight/navigation/ClassImplementationsSearch.java
@@ -17,6 +17,7 @@ package com.intellij.codeInsight.navigation;
 
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.util.Computable;
+import com.intellij.openapi.util.registry.Registry;
 import com.intellij.psi.PsiClass;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.search.PsiElementProcessor;
@@ -33,6 +34,7 @@ public class ClassImplementationsSearch implements QueryExecutor<PsiElement, Psi
   }
 
   public static boolean processImplementations(final PsiClass psiClass, final Processor<? super PsiClass> processor) {
+    final boolean showInterfaces = Registry.is("ide.goto.implementation.show.interfaces");
     return ClassInheritorsSearch.search(psiClass, ApplicationManager.getApplication().runReadAction(new Computable<SearchScope>() {
       @Override
       public SearchScope compute() {
@@ -40,7 +42,10 @@ public class ClassImplementationsSearch implements QueryExecutor<PsiElement, Psi
       }
     }), true).forEach(new PsiElementProcessorAdapter<PsiClass>(new PsiElementProcessor<PsiClass>() {
       public boolean execute(@NotNull PsiClass element) {
-        return element.isInterface() || processor.process(element);
+        if (!showInterfaces && element.isInterface()) {
+          return true;
+        }
+        return processor.process(element);
       }
     }));
   }
diff --git a/platform/platform-resources-en/src/misc/registry.properties b/platform/platform-resources-en/src/misc/registry.properties
index 8ea41c1133c1..a85422a2a634 100644
--- a/platform/platform-resources-en/src/misc/registry.properties
+++ b/platform/platform-resources-en/src/misc/registry.properties
@@ -206,3 +206,6 @@ python.exported.names.local.cache=false
 
 ide.use.nautilus3=true
 ide.use.nautilus3.description=Use Nautilus if available
+
+ide.goto.implementation.show.interfaces=false
+ide.goto.implementation.show.interfaces.description=Whether to show sub-interfaces when invoking Goto Implementation (Ctrl+Alt+B) on an interface
\ No newline at end of file