LibGUI: Add TabWidget functions to activate next/previous tab

2 files changed, 25 insertions, 0 deletions

diff --git a/Libraries/LibGUI/TabWidget.cpp b/Libraries/LibGUI/TabWidget.cpp
index 11af7af46d..06ebdb9d3e 100644
--- a/Libraries/LibGUI/TabWidget.cpp
+++ b/Libraries/LibGUI/TabWidget.cpp
@@ -273,4 +273,26 @@ void TabWidget::set_tab_title(Widget& tab, const StringView& title)
     }
 }
 
+void TabWidget::activate_next_tab()
+{
+    if (m_tabs.size() <= 1)
+        return;
+    int index = active_tab_index();
+    ++index;
+    if (index >= (int)m_tabs.size())
+        index = 0;
+    set_active_widget(m_tabs.at(index).widget);
+}
+
+void TabWidget::activate_previous_tab()
+{
+    if (m_tabs.size() <= 1)
+        return;
+    int index = active_tab_index();
+    --index;
+    if (index < 0)
+        index = m_tabs.size() - 1;
+    set_active_widget(m_tabs.at(index).widget);
+}
+
 }
diff --git a/Libraries/LibGUI/TabWidget.h b/Libraries/LibGUI/TabWidget.h
index 997c6c139a..b566b0f3f7 100644
--- a/Libraries/LibGUI/TabWidget.h
+++ b/Libraries/LibGUI/TabWidget.h
@@ -67,6 +67,9 @@ public:
 
     void set_tab_title(Widget& tab, const StringView& title);
 
+    void activate_next_tab();
+    void activate_previous_tab();
+
     Function<void(Widget&)> on_change;
 
 protected: