feat: add lockactivegroup dispatcher (#2478)

* feat: add lockactivegroup dispatcher

The `lockactivewindow` dispatcher takes `lock`, `toggle` or `unlock` as arguments. When a group is locked, no window or group can be added to it, nor can it be added to another group, but the `moveintogroup` and `moveoutofgroup` dispatches are not affected.

Implementation details:

the lock is implement via `SGroupData.locked` flag (defaults to false).

The flag is only relevant to the group head, and upon the group head's succession, the flag will be passed down to the new head. Meanwhile, the old head's flag will be set to false.

The flag is set to false when a group is dismissed.

New condition checks have been added to the dwindle and master layout to check if target group is unlocked (and if the source is also a group and unlocked) before adding windows to the target group.

* refactor: `lockactivegroup dispatcher code ordering

src/Window.cpp

@@ -645,6 +645,7 @@ void CWindow::insertWindowToGroup(CWindow* pWindow) {
             curr                            = curr->m_sGroupData.pNextWindow;
             PLAST->m_sGroupData.pNextWindow = nullptr;
             PLAST->m_sGroupData.head        = false;
+            PLAST->m_sGroupData.locked      = false;
         } while (curr != pWindow);
 
         for (auto& w : members) {

src/Window.hpp

@@ -288,6 +288,7 @@ class CWindow {
     struct SGroupData {
         CWindow* pNextWindow = nullptr; // nullptr means no grouping. Self means single group.
         bool     head        = false;
+        bool     locked      = false;
     } m_sGroupData;
 
     // For the list lookup

src/layout/DwindleLayout.cpp

@@ -311,7 +311,9 @@ void CHyprDwindleLayout::onWindowCreatedTiling(CWindow* pWindow) {
     }
 
     // if it's a group, add the window
-    if (OPENINGON->pWindow->m_sGroupData.pNextWindow && !g_pKeybindManager->m_bGroupsLocked) {
+    if (OPENINGON->pWindow->m_sGroupData.pNextWindow && !OPENINGON->pWindow->getGroupHead()->m_sGroupData.locked && // target is an unlocked group
+        (!pWindow->m_sGroupData.pNextWindow || !pWindow->getGroupHead()->m_sGroupData.locked)                       // source is not group or is a unlocked group
+        && !g_pKeybindManager->m_bGroupsLocked) {
         m_lDwindleNodesData.remove(*PNODE);
 
         OPENINGON->pWindow->insertWindowToGroup(pWindow);

src/layout/IHyprLayout.cpp

@@ -45,6 +45,8 @@ void IHyprLayout::onWindowRemoved(CWindow* pWindow) {
             if (pWindow->m_sGroupData.head) {
                 pWindow->m_sGroupData.head = false;
                 curr->m_sGroupData.head    = true;
+                curr->m_sGroupData.locked    = pWindow->m_sGroupData.locked;
+                pWindow->m_sGroupData.locked = false;
             }
 
             if (pWindow == m_pLastTiledWindow)

src/layout/MasterLayout.cpp

@@ -91,7 +91,9 @@ void CHyprMasterLayout::onWindowCreatedTiling(CWindow* pWindow) {
                       getNodeFromWindow(g_pCompositor->m_pLastWindow) :
                       getMasterNodeOnWorkspace(pWindow->m_iWorkspaceID);
 
-    if (OPENINGON && OPENINGON->pWindow->m_sGroupData.pNextWindow && OPENINGON != PNODE && !g_pKeybindManager->m_bGroupsLocked) {
+    if (OPENINGON && OPENINGON->pWindow->m_sGroupData.pNextWindow && !OPENINGON->pWindow->getGroupHead()->m_sGroupData.locked && // target is an unlocked group
+        (!pWindow->m_sGroupData.pNextWindow || !pWindow->getGroupHead()->m_sGroupData.locked)                                    // source is not group or is an unlocked group
+        && OPENINGON != PNODE && !g_pKeybindManager->m_bGroupsLocked) {
         m_lMasterNodesData.remove(*PNODE);
 
         OPENINGON->pWindow->insertWindowToGroup(pWindow);

src/managers/KeybindManager.cpp

@@ -63,6 +63,7 @@ CKeybindManager::CKeybindManager() {
     m_mDispatchers["focusurgentorlast"]             = focusUrgentOrLast;
     m_mDispatchers["focuscurrentorlast"]            = focusCurrentOrLast;
     m_mDispatchers["lockgroups"]                    = lockGroups;
+    m_mDispatchers["lockactivegroup"]               = lockActiveGroup;
     m_mDispatchers["moveintogroup"]                 = moveIntoGroup;
     m_mDispatchers["moveoutofgroup"]                = moveOutOfGroup;
     m_mDispatchers["global"]                        = global;
@@ -1173,6 +1174,7 @@ void CKeybindManager::toggleGroup(std::string args) {
     if (!PWINDOW->m_sGroupData.pNextWindow) {
         PWINDOW->m_sGroupData.pNextWindow = PWINDOW;
         PWINDOW->m_sGroupData.head        = true;
+        PWINDOW->m_sGroupData.locked      = false;
 
         PWINDOW->m_dWindowDecorations.emplace_back(std::make_unique<CHyprGroupBarDecoration>(PWINDOW));
 
@@ -1989,6 +1991,22 @@ void CKeybindManager::lockGroups(std::string args) {
     }
 }
 
+void CKeybindManager::lockActiveGroup(std::string args) {
+    const auto PWINDOW = g_pCompositor->m_pLastWindow;
+
+    if (!PWINDOW || !PWINDOW->m_sGroupData.pNextWindow)
+        return;
+    const auto PHEAD = PWINDOW->getGroupHead();
+
+    if (args == "lock") {
+        PHEAD->m_sGroupData.locked = true;
+    } else if (args == "toggle") {
+        PHEAD->m_sGroupData.locked = !PHEAD->m_sGroupData.locked;
+    } else {
+        PHEAD->m_sGroupData.locked = false;
+    }
+}
+
 void CKeybindManager::moveIntoGroup(std::string args) {
     char arg = args[0];
 

src/managers/KeybindManager.hpp

@@ -140,6 +140,7 @@ class CKeybindManager {
     static void     mouse(std::string);
     static void     bringActiveToTop(std::string);
     static void     lockGroups(std::string);
+    static void     lockActiveGroup(std::string);
     static void     moveIntoGroup(std::string);
     static void     moveOutOfGroup(std::string);
     static void     global(std::string);