CUITabControl: ability to switch to previous/next tab programmatically

cce060b5 · xottab-duty · 075c2984 · cce060b5 · cce060b5
--- a/src/xrUICore/TabControl/UITabControl.cpp
+++ b/src/xrUICore/TabControl/UITabControl.cpp
@@ -198,6 +198,30 @@ void CUITabControl::SetActiveTabByIndex(u32 index)
    SetActiveTab(newBtn->m_btn_id);
 }

+bool CUITabControl::SetNextActiveTab(bool next, bool loop)
+{
+    const int idx = GetActiveIndex();
+    if (next)
+    {
+        if (idx < (int)GetTabsCount() - 1)
+            SetActiveTabByIndex(idx + 1);
+        else if (loop)
+            SetActiveTabByIndex(0);
+        else
+            return false;
+    }
+    else
+    {
+        if (idx > 0)
+            SetActiveTabByIndex(idx - 1);
+        else if (loop)
+            SetActiveTabByIndex(GetTabsCount() - 1);
+        else
+            return false;
+    }
+    return true;
+}
+
 bool CUITabControl::OnKeyboardAction(int dik, EUIMessages keyboard_action)
 {
    if (GetAcceleratorsMode() && WINDOW_KEY_PRESSED == keyboard_action)

--- a/src/xrUICore/TabControl/UITabControl.h
+++ b/src/xrUICore/TabControl/UITabControl.h
@@ -47,6 +47,7 @@ public:
    void SetActiveTab(const shared_str& sNewTab);
    void SetActiveTab_script(LPCSTR sNewTab) { SetActiveTab(sNewTab); };
    void SetActiveTabByIndex(u32 index);
+    bool SetNextActiveTab(bool next, bool loop);

    const u32 GetTabsCount() const { return m_TabsArr.size(); }