check providers enabled

java/java-impl/src/com/intellij/ide/structureView/impl/java/JavaClassTreeElement.java

@@ -18,10 +18,12 @@ package com.intellij.ide.structureView.impl.java;
 import com.intellij.ide.structureView.StructureViewTreeElement;
 import com.intellij.psi.*;
 import com.intellij.util.containers.ContainerUtil;
-import gnu.trove.THashSet;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
 
 /**
  * @author Konstantin Bulenkov
@@ -40,7 +42,7 @@ public class JavaClassTreeElement extends JavaClassTreeElementBase<PsiClass> {
     final PsiClass aClass = getElement();
     if (aClass == null) return Collections.emptyList();
 
-    Collection<PsiElement> members = new THashSet<PsiElement>();
+    Collection<PsiElement> members = new ArrayList<PsiElement>();
     ContainerUtil.addAll(members, aClass.getFields());
     ContainerUtil.addAll(members, aClass.getMethods());
     ContainerUtil.addAll(members, aClass.getInnerClasses());

platform/lang-api/src/com/intellij/ide/structureView/TextEditorBasedStructureViewModel.java

@@ -171,4 +171,9 @@ public abstract class TextEditorBasedStructureViewModel implements StructureView
   public NodeProvider[] getNodeProviders() {
     return NodeProvider.EMPTY_ARRAY;
   }
+
+  @Override
+  public boolean isEnabled(NodeProvider provider) {
+    return false;
+  }
 }

platform/lang-impl/src/com/intellij/ide/structureView/newStructureView/TreeModelWrapper.java

@@ -119,4 +119,9 @@ public class TreeModelWrapper implements StructureViewModel, ProvidingTreeModel
   public StructureViewModel getModel() {
     return myModel;
   }
+
+  @Override
+  public boolean isEnabled(NodeProvider provider) {
+    return myStructureView.isActionActive(provider.getName());
+  }
 }

platform/lang-impl/src/com/intellij/ide/util/treeView/smartTree/TreeElementWrapper.java

@@ -43,8 +43,10 @@ public class TreeElementWrapper extends CachingChildrenTreeNode<TreeElement> {
     if (myTreeModel instanceof ProvidingTreeModel) {
       final NodeProvider[] providers = ((ProvidingTreeModel)myTreeModel).getNodeProviders();
       for (NodeProvider provider : providers) {
-        for (TreeElement child : provider.provideNodes(getValue())) {
-          addSubElement(createChildNode(child));
+        if (((ProvidingTreeModel)myTreeModel).isEnabled(provider)) {
+          for (TreeElement child : provider.provideNodes(getValue())) {
+            addSubElement(createChildNode(child));
+          }
         }
       }
     }

platform/platform-api/src/com/intellij/ide/util/treeView/smartTree/ProvidingTreeModel.java

@@ -20,4 +20,5 @@ package com.intellij.ide.util.treeView.smartTree;
  */
 public interface ProvidingTreeModel extends TreeModel {
   NodeProvider[] getNodeProviders();
+  boolean isEnabled(NodeProvider provider);
 }