Fix a crash with setting title

src/events/Windows.cpp

@@ -89,6 +89,9 @@ void Events::listener_destroyWindow(wl_listener* listener, void* data) {
 void Events::listener_setTitleWindow(wl_listener* listener, void* data) {
     CWindow* PWINDOW = wl_container_of(listener, PWINDOW, listen_setTitleWindow);
 
+    if (!g_pCompositor->windowValidMapped(PWINDOW))
+	    return;
+
     PWINDOW->m_szTitle = g_pXWaylandManager->getTitle(PWINDOW);
 
     Debug::log(LOG, "Window %x set title to %s", PWINDOW, PWINDOW->m_szTitle.c_str());
@@ -188,4 +191,4 @@ void Events::listener_newSubsurfaceWindow(wl_listener* listener, void* data) {
     const auto PSUBSURFACE = (wlr_subsurface*)data;
 
     createSubsurface(PWINDOW, PSUBSURFACE);
-}
+}

src/layout/DwindleLayout.cpp

@@ -271,17 +271,18 @@ void CHyprDwindleLayout::onBeginDragWindow() {
 
     m_vBeginDragSizeXY = Vector2D();
 
-    if (DRAGGINGWINDOW->m_bIsFullscreen) {
-        Debug::log(LOG, "Rejecting drag on a fullscreen window.");
-        return;
-    }
-
     // Window will be floating. Let's check if it's valid. It should be, but I don't like crashing.
     if (!g_pCompositor->windowValidMapped(DRAGGINGWINDOW)) {
         Debug::log(ERR, "Dragging attempted on an invalid window!");
         return;
     }
 
+    if (DRAGGINGWINDOW->m_bIsFullscreen) {
+	    Debug::log(LOG, "Rejecting drag on a fullscreen window.");
+	    return;
+    }
+
+
     m_vBeginDragXY = g_pInputManager->getMouseCoordsInternal();
     m_vBeginDragPositionXY = DRAGGINGWINDOW->m_vRealPosition;
     m_vBeginDragSizeXY = DRAGGINGWINDOW->m_vRealSize;
@@ -400,4 +401,4 @@ void CHyprDwindleLayout::fullscreenRequestForWindow(CWindow* pWindow) {
     // we need to fix XWayland windows by sending them to NARNIA
     // because otherwise they'd still be recieving mouse events
     g_pCompositor->fixXWaylandWindowsOnWorkspace(PMONITOR->activeWorkspace);
-}
+}

src/managers/XWaylandManager.cpp

@@ -49,10 +49,23 @@ void CHyprXWaylandManager::getGeometryForWindow(CWindow* pWindow, wlr_box* pbox)
 }
 
 std::string CHyprXWaylandManager::getTitle(CWindow* pWindow) {
-    if (pWindow->m_bIsX11)
-        return pWindow->m_uSurface.xwayland->title;
+    if (pWindow->m_bIsX11) {
+        if (pWindow->m_uSurface.xwayland) {
+            return pWindow->m_uSurface.xwayland->title;
+        }
+    } else {
+		return "";
+    }
+    
+    if (pWindow->m_uSurface.xdg) {
+        if (pWindow->m_uSurface.xdg->toplevel) {
+            return pWindow->m_uSurface.xdg->toplevel->title;
+        }
+    } else {
+		return "";
+    }
 
-    return pWindow->m_uSurface.xdg->toplevel->title;
+    return "";
 }
 
 void CHyprXWaylandManager::sendCloseWindow(CWindow* pWindow) {
@@ -114,4 +127,4 @@ void CHyprXWaylandManager::moveXWaylandWindow(CWindow* pWindow, const Vector2D&
     if (pWindow->m_bIsX11) {
         wlr_xwayland_surface_configure(pWindow->m_uSurface.xwayland, pos.x, pos.y, pWindow->m_vRealSize.x, pWindow->m_vRealSize.y);
     }
-}
+}