keybinds: add movegroupwindow

src/Window.cpp

@@ -693,6 +693,45 @@ void CWindow::insertWindowToGroup(CWindow* pWindow) {
     pWindow->m_sGroupData.pNextWindow = PHEAD;
 }
 
+CWindow* CWindow::getGroupPrevious() {
+    CWindow* curr = m_sGroupData.pNextWindow;
+
+    while (curr != this && curr->m_sGroupData.pNextWindow != this)
+        curr = curr->m_sGroupData.pNextWindow;
+
+    return curr;
+}
+
+void CWindow::switchWithWindowInGroup(CWindow* pWindow) {
+    if (!m_sGroupData.pNextWindow || !pWindow->m_sGroupData.pNextWindow)
+        return;
+
+    // TODO: probably can be done more easily but I let C++ do the algorithm stuff for us
+
+    std::vector<CWindow*> group;
+    group.push_back(this);
+    CWindow* curr = this->m_sGroupData.pNextWindow;
+    while (curr != this) {
+        group.push_back(curr);
+        curr = curr->m_sGroupData.pNextWindow;
+    }
+
+    auto it1 = std::find(group.begin(), group.end(), this);
+    auto it2 = std::find(group.begin(), group.end(), pWindow);
+
+    std::iter_swap(it1, it2);
+
+    for (auto it = group.begin(); it != group.end(); ++it) {
+        if (std::next(it) == group.end()) {
+            (*it)->m_sGroupData.pNextWindow = *group.begin();
+        } else {
+            (*it)->m_sGroupData.pNextWindow = *std::next(it);
+        }
+    }
+
+    std::swap(m_sGroupData.head, pWindow->m_sGroupData.head);
+}
+
 void CWindow::updateGroupOutputs() {
     if (!m_sGroupData.pNextWindow)
         return;

src/Window.hpp

@@ -333,9 +333,11 @@ class CWindow {
     CWindow*                 getGroupHead();
     CWindow*                 getGroupTail();
     CWindow*                 getGroupCurrent();
+    CWindow*                 getGroupPrevious();
     void                     setGroupCurrent(CWindow* pWindow);
     void                     insertWindowToGroup(CWindow* pWindow);
     void                     updateGroupOutputs();
+    void                     switchWithWindowInGroup(CWindow* pWindow);
 
   private:
     // For hidden windows and stuff

src/managers/KeybindManager.cpp

@@ -32,6 +32,7 @@ CKeybindManager::CKeybindManager() {
     m_mDispatchers["centerwindow"]                  = centerWindow;
     m_mDispatchers["togglegroup"]                   = toggleGroup;
     m_mDispatchers["changegroupactive"]             = changeGroupActive;
+    m_mDispatchers["movegroupwindow"]               = moveGroupWindow;
     m_mDispatchers["togglesplit"]                   = toggleSplit;
     m_mDispatchers["splitratio"]                    = alterSplitRatio;
     m_mDispatchers["focusmonitor"]                  = focusMonitor;
@@ -2076,3 +2077,12 @@ void CKeybindManager::global(std::string args) {
 
     g_pProtocolManager->m_pGlobalShortcutsProtocolManager->sendGlobalShortcutEvent(APPID, NAME, g_pKeybindManager->m_iPassPressed);
 }
+
+void CKeybindManager::moveGroupWindow(std::string args) {
+    const auto BACK = args == "b" || args == "prev";
+
+    if (!g_pCompositor->m_pLastWindow || !g_pCompositor->m_pLastWindow->m_sGroupData.pNextWindow)
+        return;
+
+    g_pCompositor->m_pLastWindow->switchWithWindowInGroup(BACK ? g_pCompositor->m_pLastWindow->getGroupPrevious() : g_pCompositor->m_pLastWindow->m_sGroupData.pNextWindow);
+}

src/managers/KeybindManager.hpp

@@ -27,7 +27,8 @@ struct SKeybind {
     bool shadowed = false;
 };
 
-enum eFocusWindowMode {
+enum eFocusWindowMode
+{
     MODE_CLASS_REGEX = 0,
     MODE_TITLE_REGEX,
     MODE_ADDRESS,
@@ -144,6 +145,7 @@ class CKeybindManager {
     static void     lockActiveGroup(std::string);
     static void     moveIntoGroup(std::string);
     static void     moveOutOfGroup(std::string);
+    static void     moveGroupWindow(std::string);
     static void     global(std::string);
 
     friend class CCompositor;