[java] navigation, presentation, and "go to symbol" provider for modules

java/java-psi-impl/src/com/intellij/psi/impl/compiled/ClsJavaModuleImpl.java

@@ -15,10 +15,9 @@
  */
 package com.intellij.psi.impl.compiled;
 
-import com.intellij.psi.JavaElementVisitor;
-import com.intellij.psi.PsiElementVisitor;
-import com.intellij.psi.PsiJavaModule;
-import com.intellij.psi.PsiJavaModuleReference;
+import com.intellij.navigation.ItemPresentation;
+import com.intellij.navigation.ItemPresentationProviders;
+import com.intellij.psi.*;
 import com.intellij.psi.impl.java.stubs.PsiJavaModuleStub;
 import com.intellij.psi.impl.source.SourceTreeToPsiMap;
 import com.intellij.psi.impl.source.tree.JavaElementType;
@@ -56,6 +55,22 @@ public class ClsJavaModuleImpl extends ClsRepositoryPsiElement<PsiJavaModuleStub
     setMirror(getNameElement(), SourceTreeToPsiMap.<PsiJavaModule>treeToPsiNotNull(element).getNameElement());
   }
 
+  @Override
+  public String getName() {
+    return getModuleName();
+  }
+
+  @Override
+  public ItemPresentation getPresentation() {
+    return ItemPresentationProviders.getItemPresentation(this);
+  }
+
+  @NotNull
+  @Override
+  public PsiElement getNavigationElement() {
+    return getNameElement();
+  }
+
   @Override
   public void accept(@NotNull PsiElementVisitor visitor) {
     if (visitor instanceof JavaElementVisitor) {

java/java-psi-impl/src/com/intellij/psi/impl/source/PsiJavaModuleImpl.java

@@ -16,10 +16,9 @@
 package com.intellij.psi.impl.source;
 
 import com.intellij.lang.ASTNode;
-import com.intellij.psi.JavaElementVisitor;
-import com.intellij.psi.PsiElementVisitor;
-import com.intellij.psi.PsiJavaModule;
-import com.intellij.psi.PsiJavaModuleReference;
+import com.intellij.navigation.ItemPresentation;
+import com.intellij.navigation.ItemPresentationProviders;
+import com.intellij.psi.*;
 import com.intellij.psi.impl.java.stubs.JavaStubElementTypes;
 import com.intellij.psi.impl.java.stubs.PsiJavaModuleStub;
 import com.intellij.psi.util.PsiTreeUtil;
@@ -51,6 +50,22 @@ public class PsiJavaModuleImpl extends JavaStubPsiElement<PsiJavaModuleStub> imp
     return getNameElement().getReferenceText();
   }
 
+  @Override
+  public String getName() {
+    return getModuleName();
+  }
+
+  @Override
+  public ItemPresentation getPresentation() {
+    return ItemPresentationProviders.getItemPresentation(this);
+  }
+
+  @NotNull
+  @Override
+  public PsiElement getNavigationElement() {
+    return getNameElement();
+  }
+
   @Override
   public void accept(@NotNull PsiElementVisitor visitor) {
     if (visitor instanceof JavaElementVisitor) {

java/java-psi-impl/src/com/intellij/psi/presentation/java/JavaModulePresentationProvider.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2000-2016 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 com.intellij.psi.presentation.java;
+
+import com.intellij.icons.AllIcons;
+import com.intellij.navigation.ItemPresentation;
+import com.intellij.navigation.ItemPresentationProvider;
+import com.intellij.psi.PsiJavaModule;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.*;
+
+public class JavaModulePresentationProvider implements ItemPresentationProvider<PsiJavaModule> {
+  @Override
+  public ItemPresentation getPresentation(@NotNull final PsiJavaModule item) {
+    return new ItemPresentation() {
+      @Nullable
+      @Override
+      public String getPresentableText() {
+        return item.getModuleName();
+      }
+
+      @Nullable
+      @Override
+      public String getLocationString() {
+        return null;
+      }
+
+      @Nullable
+      @Override
+      public Icon getIcon(boolean unused) {
+        return AllIcons.FileTypes.Java;
+      }
+    };
+  }
+}