Introduce Scratches named scope (GO-4763)

- it's required to deserialize "Scratches and Consoles" scope

platform/lang-impl/src/com/intellij/ide/scratch/ScratchFileServiceImpl.java

@@ -315,7 +315,7 @@ public class ScratchFileServiceImpl extends ScratchFileService implements Persis
       @NotNull
       @Override
       public String getDisplayName() {
-        return "Scratches and Consoles";
+        return ScratchesAndConsolesNamedScope.NAME;
       }
 
       @Override

platform/lang-impl/src/com/intellij/ide/scratch/ScratchesAndConsolesNamedScope.java

@@ -0,0 +1,29 @@
+// Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.ide.scratch;
+
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.psi.search.scope.packageSet.AbstractPackageSet;
+import com.intellij.psi.search.scope.packageSet.NamedScope;
+import com.intellij.psi.search.scope.packageSet.NamedScopesHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ScratchesAndConsolesNamedScope extends NamedScope {
+  public static final String NAME = "Scratches and Consoles";
+
+  public ScratchesAndConsolesNamedScope() {
+    super(NAME, new AbstractPackageSet(NAME) {
+      @Override
+      public boolean contains(VirtualFile file, NamedScopesHolder holder) {
+        return contains(file, holder.getProject(), holder);
+      }
+
+      @Override
+      public boolean contains(VirtualFile file, @NotNull Project project, @Nullable NamedScopesHolder holder) {
+        RootType rootType = ScratchUtil.isScratch(file) ? ScratchFileService.getInstance().getRootType(file) : null;
+        return rootType != null && !rootType.isHidden();
+      }
+    });
+  }
+}

platform/lang-impl/src/com/intellij/ide/util/scopeChooser/ScopeChooserUtils.java

@@ -16,6 +16,7 @@
 package com.intellij.ide.util.scopeChooser;
 
 import com.intellij.ide.IdeBundle;
+import com.intellij.ide.scratch.ScratchesAndConsolesNamedScope;
 import com.intellij.openapi.fileEditor.FileEditorManager;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
@@ -62,7 +63,9 @@ public class ScopeChooserUtils {
       namedScope = new ProjectFilesScope();
     }
     GlobalSearchScope scope = GlobalSearchScopesCore.filterScope(project, namedScope);
-    if (namedScope instanceof ProjectFilesScope || namedScope instanceof ProjectProductionScope) {
+    if (namedScope instanceof ProjectFilesScope ||
+        namedScope instanceof ProjectProductionScope ||
+        namedScope instanceof ScratchesAndConsolesNamedScope) {
       return scope;
     }
     return intersectWithContentScope(project, scope);

platform/lang-impl/src/com/intellij/packageDependencies/DefaultScopesProvider.java

@@ -15,6 +15,7 @@
  */
 package com.intellij.packageDependencies;
 
+import com.intellij.ide.scratch.ScratchesAndConsolesNamedScope;
 import com.intellij.openapi.extensions.Extensions;
 import com.intellij.openapi.project.Project;
 import com.intellij.psi.search.scope.NonProjectFilesScope;
@@ -47,7 +48,7 @@ public class DefaultScopesProvider extends CustomScopesProviderEx {
     NamedScope projectScope = new ProjectFilesScope();
     NamedScope nonProjectScope = new NonProjectFilesScope();
     myProblemsScope = new ProblemScope(project);
-    myScopes = Arrays.asList(projectScope, getProblemsScope(), getAllScope(), nonProjectScope);
+    myScopes = Arrays.asList(projectScope, getProblemsScope(), getAllScope(), nonProjectScope, new ScratchesAndConsolesNamedScope());
   }
 
   @Override