Welcome tab

jabgui/src/main/java/module-info.java

@@ -188,5 +188,6 @@
     requires org.antlr.antlr4.runtime;
     requires org.libreoffice.uno;
     requires com.dlsc.pdfviewfx;
+    requires org.jetbrains.annotations;
     // endregion
 }

jabgui/src/main/java/org/jabref/gui/frame/JabRefFrame.java

@@ -32,7 +32,6 @@
 import org.jabref.gui.LibraryTab;
 import org.jabref.gui.LibraryTabContainer;
 import org.jabref.gui.StateManager;
-import org.jabref.gui.WelcomeTab;
 import org.jabref.gui.actions.ActionFactory;
 import org.jabref.gui.actions.ActionHelper;
 import org.jabref.gui.actions.SimpleCommand;
@@ -53,6 +52,7 @@
 import org.jabref.gui.undo.RedoAction;
 import org.jabref.gui.undo.UndoAction;
 import org.jabref.gui.util.BindingsHelper;
+import org.jabref.gui.welcome.WelcomeTab;
 import org.jabref.logic.UiCommand;
 import org.jabref.logic.ai.AiService;
 import org.jabref.logic.journals.JournalAbbreviationRepository;

jabgui/src/main/java/org/jabref/gui/welcome/QuickSettingsButton.java

@@ -0,0 +1,19 @@
+package org.jabref.gui.welcome;
+
+import javafx.scene.control.Button;
+
+import org.jabref.gui.icon.IconTheme;
+
+import org.jspecify.annotations.Nullable;
+
+public class QuickSettingsButton extends Button {
+    public QuickSettingsButton(String text, IconTheme.@Nullable JabRefIcons icon, Runnable action) {
+        super(text);
+        if (icon != null) {
+            setGraphic(icon.getGraphicNode());
+        }
+        getStyleClass().add("quick-settings-button");
+        setMaxWidth(Double.MAX_VALUE);
+        setOnAction(_ -> action.run());
+    }
+}

jabgui/src/main/java/org/jabref/gui/welcome/ThemeWireFrameComponent.java

@@ -0,0 +1,55 @@
+package org.jabref.gui.welcome;
+
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+import javafx.fxml.FXML;
+import javafx.scene.layout.VBox;
+
+import com.airhacks.afterburner.views.ViewLoader;
+
+public class ThemeWireFrameComponent extends VBox {
+
+    private final StringProperty themeType = new SimpleStringProperty();
+
+    public ThemeWireFrameComponent() {
+        ViewLoader.view(this)
+                  .root(this)
+                  .load();
+
+        themeType.addListener((_, _, newValue) -> {
+            if (newValue != null) {
+                updateTheme();
+            }
+        });
+    }
+
+    public ThemeWireFrameComponent(String themeType) {
+        this();
+        setThemeType(themeType);
+    }
+
+    public void setThemeType(String themeType) {
+        this.themeType.set(themeType);
+    }
+
+    @FXML
+    private void initialize() {
+        if (themeType.get() != null) {
+            updateTheme();
+        }
+    }
+
+    private void updateTheme() {
+        String theme = themeType.get();
+        if (theme == null) {
+            return;
+        }
+
+        getStyleClass().removeIf(styleClass ->
+                styleClass.startsWith("wireframe-light") ||
+                        styleClass.startsWith("wireframe-dark") ||
+                        styleClass.startsWith("wireframe-custom"));
+
+        getStyleClass().add("wireframe-" + theme);
+    }
+}