From bdf598bd5e70f5e430a5bd95ddedd778339b9e3c Mon Sep 17 00:00:00 2001
From: "Maxim.Medvedev" <maxim.medvedev@jetbrains.com>
Date: Fri, 16 Mar 2012 12:35:59 +0400
Subject: [PATCH] IDEA-25658 "Find usages" - not able to hide import statements
 for Groovy classes

---
 plugins/groovy/src/META-INF/plugin.xml        |  2 +
 .../findUsages/GrImportFilteringRule.java     | 44 +++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 plugins/groovy/src/org/jetbrains/plugins/groovy/findUsages/GrImportFilteringRule.java

diff --git a/plugins/groovy/src/META-INF/plugin.xml b/plugins/groovy/src/META-INF/plugin.xml
index 9e5fe79a4dfe..f57429b81ab6 100644
--- a/plugins/groovy/src/META-INF/plugin.xml
+++ b/plugins/groovy/src/META-INF/plugin.xml
@@ -220,6 +220,8 @@
     <lang.surroundDescriptor language="Groovy"
                              implementationClass="org.jetbrains.plugins.groovy.lang.surroundWith.GroovySurroundDescriptor"/>
     <lang.findUsagesProvider language="Groovy" implementationClass="org.jetbrains.plugins.groovy.findUsages.GroovyFindUsagesProvider"/>
+    <importFilteringRule implementation="org.jetbrains.plugins.groovy.findUsages.GrImportFilteringRule"/>
+
     <readWriteAccessDetector implementation="org.jetbrains.plugins.groovy.findUsages.GroovyReadWriteAccessDetector" order="before java"/>
     <findUsagesHandlerFactory implementation="org.jetbrains.plugins.groovy.findUsages.GroovyFindUsagesHandlerFactory"/>
     <lang.braceMatcher language="Groovy" implementationClass="org.jetbrains.plugins.groovy.highlighter.GroovyBraceMatcher"/>
diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/findUsages/GrImportFilteringRule.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/findUsages/GrImportFilteringRule.java
new file mode 100644
index 000000000000..d619b79a780f
--- /dev/null
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/findUsages/GrImportFilteringRule.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2000-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.plugins.groovy.findUsages;
+
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.util.PsiTreeUtil;
+import com.intellij.usages.Usage;
+import com.intellij.usages.rules.ImportFilteringRule;
+import com.intellij.usages.rules.PsiElementUsage;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.plugins.groovy.lang.psi.GroovyFile;
+import org.jetbrains.plugins.groovy.lang.psi.api.toplevel.imports.GrImportStatement;
+
+/**
+ * @author Max Medvedev
+ */
+public class GrImportFilteringRule extends ImportFilteringRule {
+  @Override
+  public boolean isVisible(@NotNull Usage usage) {
+    if (usage instanceof PsiElementUsage) {
+      final PsiElement psiElement = ((PsiElementUsage)usage).getElement();
+      final PsiFile containingFile = psiElement.getContainingFile();
+      if (containingFile instanceof GroovyFile) {
+        // check whether the element is in the import list
+        return PsiTreeUtil.getParentOfType(psiElement, GrImportStatement.class, true) == null;
+      }
+    }
+    return true;
+  }
+}