Refactor NewEntryAction

Author: calixtus

src/main/java/org/jabref/gui/entrytype/EntryTypeViewModel.java

@@ -200,9 +200,10 @@ public void runFetcherWorker() {
                 if (addEntryFlag) {
                     new NewEntryAction(
                             StandardEntryType.Article,
+                            () -> libraryTab,
                             dialogService,
                             preferences,
-                            stateManager).execute(libraryTab);
+                            stateManager).execute();
                     searchSuccesfulProperty.set(true);
                 }
             }

src/main/java/org/jabref/gui/importer/GenerateEntryFromIdAction.java

@@ -79,8 +79,8 @@ public void execute() {
 
             if (dialogService.showConfirmationDialogAndWait(Localization.lang("Failed to import by ID"), msg, Localization.lang("Add entry manually"))) {
                 // add entry manually
-                new NewEntryAction(StandardEntryType.Article, dialogService, preferences, stateManager)
-                        .execute(libraryTab);
+                new NewEntryAction(StandardEntryType.Article, () -> libraryTab, dialogService, preferences, stateManager)
+                        .execute();
             }
         });
 

src/main/java/org/jabref/gui/importer/NewEntryAction.java

@@ -1,6 +1,7 @@
 package org.jabref.gui.importer;
 
 import java.util.Optional;
+import java.util.function.Supplier;
 
 import org.jabref.gui.DialogService;
 import org.jabref.gui.LibraryTab;
@@ -16,39 +17,35 @@ public class NewEntryAction extends SimpleCommand {
     /**
      * The type of the entry to create.
      */
-    private Optional<EntryType> type;
-
+    private final Optional<EntryType> type;
+    private final Supplier<LibraryTab> tabSupplier;
     private final DialogService dialogService;
-
     private final GuiPreferences preferences;
-    private final StateManager stateManager;
 
-    public NewEntryAction(DialogService dialogService, GuiPreferences preferences, StateManager stateManager) {
+    public NewEntryAction(EntryType type, Supplier<LibraryTab> tabSupplier, DialogService dialogService, GuiPreferences preferences, StateManager stateManager) {
+        this.type = Optional.ofNullable(type);
+        this.tabSupplier = tabSupplier;
         this.dialogService = dialogService;
         this.preferences = preferences;
-        this.stateManager = stateManager;
-
-        this.type = Optional.empty();
 
         this.executable.bind(ActionHelper.needsDatabase(stateManager));
     }
 
     public NewEntryAction(EntryType type, DialogService dialogService, GuiPreferences preferences, StateManager stateManager) {
-        this(dialogService, preferences, stateManager);
-        this.type = Optional.ofNullable(type);
+        this(type, () -> stateManager.activeTabProperty().get().get(), dialogService, preferences, stateManager);
+    }
+
+    public NewEntryAction(DialogService dialogService, GuiPreferences preferences, StateManager stateManager) {
+        this(null, dialogService, preferences, stateManager);
     }
 
     @Override
     public void execute() {
-        Optional<LibraryTab> activeTab = stateManager.activeTabProperty().get();
-        if (activeTab.isEmpty()) {
+        LibraryTab libraryTab = tabSupplier.get();
+        if (libraryTab == null) {
             return;
         }
 
-        execute(activeTab.get());
-    }
-
-    public void execute(LibraryTab libraryTab) {
         if (type.isPresent()) {
             libraryTab.insertEntry(new BibEntry(type.get()));
         } else {

src/test/java/org/jabref/gui/importer/NewEntryActionTest.java

@@ -1,5 +1,7 @@
 package org.jabref.gui.importer;
 
+import java.util.Optional;
+
 import org.jabref.gui.DialogService;
 import org.jabref.gui.LibraryTab;
 import org.jabref.gui.StateManager;
@@ -14,6 +16,7 @@
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 class NewEntryActionTest {
 
@@ -25,9 +28,10 @@ class NewEntryActionTest {
     @Test
     void executeOnSuccessWithFixedType() {
         EntryType type = StandardEntryType.Article;
+        when(stateManager.activeTabProperty().get()).thenReturn(Optional.ofNullable(libraryTab));
         NewEntryAction newEntryAction = new NewEntryAction(type, dialogService, preferences, stateManager);
 
-        newEntryAction.execute(libraryTab);
+        newEntryAction.execute();
         verify(libraryTab, times(1)).insertEntry(new BibEntry(type));
     }
 }