dep/imgui: Add ImGuiChildFlags_NoNavCancel

dep/imgui/include/imgui.h

@@ -1212,6 +1212,7 @@ enum ImGuiChildFlags_
     ImGuiChildFlags_AlwaysAutoResize        = 1 << 6,   // Combined with AutoResizeX/AutoResizeY. Always measure size even when child is hidden, always return true, always disable clipping optimization! NOT RECOMMENDED.
     ImGuiChildFlags_FrameStyle              = 1 << 7,   // Style the child window like a framed item: use FrameBg, FrameRounding, FrameBorderSize, FramePadding instead of ChildBg, ChildRounding, ChildBorderSize, WindowPadding.
     ImGuiChildFlags_NavFlattened            = 1 << 8,   // [BETA] Share focus scope, allow keyboard/gamepad navigation to cross over parent border to this child or between sibling child windows.
+    ImGuiChildFlags_NoNavCancel             = 1 << 9,   // [BETA] Disable canceling child focus when navigating away from it to parent or sibling windows.
 
     // Obsolete names
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

dep/imgui/src/imgui.cpp

@@ -6367,7 +6367,7 @@ bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, I
     IM_ASSERT(id != 0);
 
     // Sanity check as it is likely that some user will accidentally pass ImGuiWindowFlags into the ImGuiChildFlags argument.
-    const ImGuiChildFlags ImGuiChildFlags_SupportedMask_ = ImGuiChildFlags_Borders | ImGuiChildFlags_AlwaysUseWindowPadding | ImGuiChildFlags_ResizeX | ImGuiChildFlags_ResizeY | ImGuiChildFlags_AutoResizeX | ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_AlwaysAutoResize | ImGuiChildFlags_FrameStyle | ImGuiChildFlags_NavFlattened;
+    const ImGuiChildFlags ImGuiChildFlags_SupportedMask_ = ImGuiChildFlags_Borders | ImGuiChildFlags_AlwaysUseWindowPadding | ImGuiChildFlags_ResizeX | ImGuiChildFlags_ResizeY | ImGuiChildFlags_AutoResizeX | ImGuiChildFlags_AutoResizeY | ImGuiChildFlags_AlwaysAutoResize | ImGuiChildFlags_FrameStyle | ImGuiChildFlags_NavFlattened | ImGuiChildFlags_NoNavCancel;
     IM_UNUSED(ImGuiChildFlags_SupportedMask_);
     IM_ASSERT((child_flags & ~ImGuiChildFlags_SupportedMask_) == 0 && "Illegal ImGuiChildFlags value. Did you pass ImGuiWindowFlags values instead of ImGuiChildFlags?");
     IM_ASSERT((window_flags & ImGuiWindowFlags_AlwaysAutoResize) == 0 && "Cannot specify ImGuiWindowFlags_AlwaysAutoResize for BeginChild(). Use ImGuiChildFlags_AlwaysAutoResize!");
@@ -14181,7 +14181,9 @@ static void ImGui::NavUpdateCancelRequest()
         NavRestoreLayer(ImGuiNavLayer_Main);
         SetNavCursorVisibleAfterMove();
     }
-    else if (g.NavWindow && g.NavWindow != g.NavWindow->RootWindow && !(g.NavWindow->RootWindowForNav->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->RootWindowForNav->ParentWindow)
+    else if (g.NavWindow && g.NavWindow != g.NavWindow->RootWindow &&
+             !(g.NavWindow->RootWindowForNav->Flags & ImGuiWindowFlags_Popup) &&
+             g.NavWindow->RootWindowForNav->ParentWindow && !(g.NavWindow->ChildFlags & ImGuiChildFlags_NoNavCancel))
     {
         // Exit child window
         ImGuiWindow* child_window = g.NavWindow->RootWindowForNav;