IDEA-78496 Perforce integration: IntelliJ shows duplicate changelists when changelists are modified outside the IDE

platform/vcs-api/src/com/intellij/openapi/vcs/changes/ChangeListManagerGate.java

@@ -17,6 +17,7 @@ package com.intellij.openapi.vcs.changes;
 
 import com.intellij.openapi.vcs.FileStatus;
 import com.intellij.openapi.vfs.VirtualFile;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
@@ -42,4 +43,6 @@ public interface ChangeListManagerGate {
   void setListsToDisappear(final Collection<String> names);
   FileStatus getStatus(final VirtualFile file);
   FileStatus getStatus(final File file);
+
+  void setDefaultChangeList(@NotNull String list);
 }

platform/vcs-impl/src/com/intellij/openapi/vcs/changes/ChangeListWorker.java

@@ -768,6 +768,11 @@ public class ChangeListWorker implements ChangeListsWriteOperations {
     public FileStatus getStatus(File file) {
       return myWorker.getStatus(file);
     }
+
+    @Override
+    public void setDefaultChangeList(@NotNull String list) {
+      myWorker.setDefault(list);
+    }
   }
 
   // assumes after revisions are all not null

platform/vcs-impl/src/com/intellij/openapi/vcs/changes/pending/MockChangeListManagerGate.java

@@ -21,6 +21,7 @@ import com.intellij.openapi.vcs.changes.ChangeListManager;
 import com.intellij.openapi.vcs.changes.ChangeListManagerGate;
 import com.intellij.openapi.vcs.changes.LocalChangeList;
 import com.intellij.openapi.vfs.VirtualFile;
+import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
 import java.util.Collection;
@@ -80,4 +81,8 @@ public class MockChangeListManagerGate implements ChangeListManagerGate {
   public FileStatus getStatus(File file) {
     return null;
   }
+
+  @Override
+  public void setDefaultChangeList(@NotNull String list) {
+  }
 }