Fixes after rebase

Author: Vorago

ui/jetbrains/src/main/java/com/neueda/jetbrains/plugin/graphdb/jetbrains/actions/execute/ExecuteQueryPayload.java

@@ -3,12 +3,18 @@
 import com.intellij.openapi.editor.Editor;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Optional;
+
 public class ExecuteQueryPayload {
 
     private final String content;
-
     private final Editor editor;
 
+    public ExecuteQueryPayload(String content) {
+        this.content = content;
+        this.editor = null;
+    }
+
     public ExecuteQueryPayload(String content, Editor editor) {
         this.content = content;
         this.editor = editor;
@@ -20,8 +26,8 @@ public String getContent() {
     }
 
     @NotNull
-    public Editor getEditor() {
-        return editor;
+    public Optional<Editor> getEditor() {
+        return Optional.ofNullable(editor);
     }
 
 }

ui/jetbrains/src/main/java/com/neueda/jetbrains/plugin/graphdb/jetbrains/ui/console/graph/GraphPanelInteractions.java

@@ -61,7 +61,7 @@ public void postResultReceived(ExecuteQueryPayload payload) {
                     @Override
                     public void handleError(ExecuteQueryPayload payload, Exception exception) {
                         String errorMessage = exception.getMessage() == null ? "Error occurred" : "Error occurred: " + exception.getMessage();
-                        HintManager.getInstance().showErrorHint(payload.getEditor(), errorMessage);
+                        payload.getEditor().ifPresent(editor -> HintManager.getInstance().showErrorHint(editor, errorMessage));
 
                         visualization.stop();
                         visualization.clear();