add ctrl(+shift)+tab keybinds

src/components/channeltabswitcherhandy.cpp

@@ -115,6 +115,22 @@ void ChannelTabSwitcherHandy::GoForwardOnCurrent() {
     AdvanceOnCurrent(1);
 }
 
+void ChannelTabSwitcherHandy::GoToPreviousTab() {
+    if (!hdy_tab_view_select_previous_page(m_tab_view)) {
+        if (const auto num_pages = hdy_tab_view_get_n_pages(m_tab_view); num_pages > 1) {
+            hdy_tab_view_set_selected_page(m_tab_view, hdy_tab_view_get_nth_page(m_tab_view, num_pages - 1));
+        }
+    }
+}
+
+void ChannelTabSwitcherHandy::GoToNextTab() {
+    if (!hdy_tab_view_select_next_page(m_tab_view)) {
+        if (hdy_tab_view_get_n_pages(m_tab_view) > 1) {
+            hdy_tab_view_set_selected_page(m_tab_view, hdy_tab_view_get_nth_page(m_tab_view, 0));
+        }
+    }
+}
+
 int ChannelTabSwitcherHandy::GetNumberOfTabs() const {
     return hdy_tab_view_get_n_pages(m_tab_view);
 }

src/components/channeltabswitcherhandy.hpp

@@ -24,6 +24,8 @@ public:
 
     void GoBackOnCurrent();
     void GoForwardOnCurrent();
+    void GoToPreviousTab();
+    void GoToNextTab();
 
     [[nodiscard]] int GetNumberOfTabs() const;
 

src/components/chatwindow.cpp

@@ -192,6 +192,14 @@ void ChatWindow::GoBack() {
 void ChatWindow::GoForward() {
     m_tab_switcher->GoForwardOnCurrent();
 }
+
+void ChatWindow::GoToPreviousTab() {
+    m_tab_switcher->GoToPreviousTab();
+}
+
+void ChatWindow::GoToNextTab() {
+    m_tab_switcher->GoToNextTab();
+}
 #endif
 
 Snowflake ChatWindow::GetActiveChannel() const {

src/components/chatwindow.hpp

@@ -41,6 +41,8 @@ public:
     void UseTabsState(const TabsState &state);
     void GoBack();
     void GoForward();
+    void GoToPreviousTab();
+    void GoToNextTab();
 #endif
 
 protected: