IDEA-117455 Github: do not ask user for fork repository if we can guess choice

plugins/github/src/org/jetbrains/plugins/github/GithubCreatePullRequestWorker.java

@@ -15,7 +15,8 @@ import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.util.Consumer;
 import com.intellij.util.Function;
 import com.intellij.util.ThrowableConvertor;
-import com.intellij.util.containers.*;
+import com.intellij.util.containers.ContainerUtil;
+import com.intellij.util.containers.Convertor;
 import com.intellij.util.containers.HashMap;
 import git4idea.DialogManager;
 import git4idea.GitCommit;
@@ -43,8 +44,6 @@ import org.jetbrains.plugins.github.util.GithubUtil;
 
 import java.io.IOException;
 import java.util.*;
-import java.util.HashSet;
-import java.util.List;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.FutureTask;
@@ -244,11 +243,34 @@ public class GithubCreatePullRequestWorker {
 
   @Nullable
   public GithubFullPath showTargetDialog() {
+    return showTargetDialog(false);
+  }
+
+  @Nullable
+  public GithubFullPath showTargetDialog(boolean firstTime) {
     final GithubInfo2 info = getAvailableForksInModal(myProject, myGitRepository, myAuth, myPath);
     if (info == null) {
       return null;
     }
 
+    if (firstTime) {
+      if (info.getForks().size() == 1) {
+        return info.getForks().iterator().next();
+      }
+      if (info.getForks().size() == 2) {
+        Iterator<GithubFullPath> it = info.getForks().iterator();
+        GithubFullPath path1 = it.next();
+        GithubFullPath path2 = it.next();
+
+        if (myPath.equals(path1)) {
+          return path2;
+        }
+        if (myPath.equals(path2)) {
+          return path1;
+        }
+      }
+    }
+
     Convertor<String, GithubFullPath> getForkPath = new Convertor<String, GithubFullPath>() {
       @Nullable
       @Override

plugins/github/src/org/jetbrains/plugins/github/ui/GithubCreatePullRequestDialog.java

@@ -106,7 +106,7 @@ public class GithubCreatePullRequestDialog extends DialogWrapper {
       setTarget(defaultForkPath);
     }
     else {
-      if (!showTargetDialog()) {
+      if (!showTargetDialog(true)) {
         close(CANCEL_EXIT_CODE);
         return;
       }
@@ -115,7 +115,11 @@ public class GithubCreatePullRequestDialog extends DialogWrapper {
   }
 
   private boolean showTargetDialog() {
-    GithubFullPath forkPath = myWorker.showTargetDialog();
+    return showTargetDialog(false);
+  }
+
+  private boolean showTargetDialog(boolean firstTime) {
+    GithubFullPath forkPath = myWorker.showTargetDialog(firstTime);
     if (forkPath == null) {
       return false;
     }