Editor manages window class IDs so tool windows cannot be docked with other tools or with the main editor window

src/run_modes/editor/editor.cpp

@@ -31,7 +31,7 @@ namespace editor
 
     Editor::Editor()
         : mLogCat(-1), mpFileBrowser(nullptr), mpPath(nullptr), mDoNewProject(false), mDoOpenProject(false),
-        mDoSaveProject(false), mDoSaveAs(false), mpMapEditor(nullptr)
+        mDoSaveProject(false), mDoSaveAs(false), mNextWindowID(0), mpMapEditor(nullptr)
     {
     }
 
@@ -94,6 +94,11 @@ namespace editor
         return mLogCat;
     }
     
+    unsigned int Editor::GetNextWindowID()
+    {
+        return ++mNextWindowID;
+    }
+
     
     bool Editor::IsToolOpen(ToolType type) const
     {

src/run_modes/editor/editor.h

@@ -25,6 +25,7 @@ namespace lunarium
 
     enum ToolType
     {
+        TT_MAIN_EDITOR,
         TT_MAP_EDITOR,
     };
     
@@ -40,6 +41,7 @@ namespace lunarium
 
 
         uint32_t GetLogCat() const;
+        unsigned int GetNextWindowID();
         bool IsToolOpen(ToolType type) const;
 
     private:
@@ -52,6 +54,7 @@ namespace lunarium
         Project mProject;
 
         // Tools
+        unsigned int mNextWindowID;
         MapEditor* mpMapEditor;
 
         FileBrowser* mpFileBrowser;

src/run_modes/editor/panel_manager.cpp

@@ -9,7 +9,6 @@
 #include "panel_manager.h"
 #include "editor.h"
 #include <utils/logger.h>
-#include <gui/dearimgui/imgui.h>
 #include <gui/dearimgui/imgui_internal.h>   // To use the DockWindowXXX methods
 #include <filesystem>
 
@@ -52,10 +51,8 @@ namespace lunarium { namespace editor
     {
         mpEditor = editor;
 
-        
-        //mpMainPanel = &MainPanel::GetInstance();
-       // mpMainPanel->SetEditor(mpEditor);
-        //mpMainPanel->ResetDockSpace();
+        memset(&mWindowClass, 0, sizeof(ImGuiWindowClass));
+        mWindowClass.ClassId = mpEditor->GetNextWindowID();
         
         if (!std::filesystem::exists("imgui.ini"))
         {
@@ -70,7 +67,6 @@ namespace lunarium { namespace editor
     void PanelManager::Shutdown()
     {
         DestoryPanels();
-        //MainPanel::FreeInstance();
     }
 
     void PanelManager::OpenPanel(PanelType type)
@@ -118,6 +114,11 @@ namespace lunarium { namespace editor
         return nullptr;
     }
 
+    const ImGuiWindowClass* PanelManager::GetWindowClass() const
+    {
+        return &mWindowClass;
+    }
+
     void PanelManager::ResetDocking()
     {
         mResetDockSpace = true;
@@ -161,6 +162,7 @@ namespace lunarium { namespace editor
         {
             if (iter->second->IsOpen())
             {
+                ImGui::SetNextWindowClass(&mWindowClass);
                 iter->second->DoFrame();
             }
         }
@@ -193,11 +195,13 @@ namespace lunarium { namespace editor
     void PanelManager::MakeDockSpaces()
     {
         ImGuiViewport* Viewport = ImGui::GetMainViewport();
-        mDockSpaceID = ImGui::DockSpace(ImGui::GetID("Lunarium Editor Dockspace"));
+        ImGuiID windowID = mpEditor->GetNextWindowID();
+        mDockSpaceID = ImGui::DockSpace(ImGui::GetID("Lunarium Editor Dockspace"), ImVec2(0, 0), 0, &mWindowClass);
         if (!ImGui::DockBuilderGetNode(mDockSpaceID) || mResetDockSpace) 
         {
             Logger::Log(mpEditor->GetLogCat(), LogLevel::INFO, "Resetting Dockspaces");
 
+
             mResetDockSpace = false;
             ImGui::DockBuilderRemoveNode(mDockSpaceID);
             ImGui::DockBuilderAddNode(mDockSpaceID, ImGuiDockNodeFlags_DockSpace);

src/run_modes/editor/panel_manager.h

@@ -10,10 +10,12 @@
 #define PANEL_MANAGER_H_
 
 #include <utils/opRes.h>
-//#include "panels/mainPanel.h"
+#include <gui/dearimgui/imgui.h>
 #include <gui/panel.h>
 #include <map>
 
+struct ImGuiWindowClass;
+
 namespace lunarium{
     class IGraphics;
 namespace editor
@@ -32,6 +34,7 @@ namespace editor
         void ClosePanel(gui::PanelType type);
         bool IsOpen(gui::PanelType type);
         gui::Panel* GetPanel(gui::PanelType type);
+        const ImGuiWindowClass* GetWindowClass() const;
 
         void ResetDocking();
 
@@ -44,6 +47,7 @@ namespace editor
         bool mResetDockSpace;
         std::map<gui::PanelType, gui::Panel*> mPanels;
         unsigned int mDockSpaceID;
+        ImGuiWindowClass mWindowClass;
         std::map<gui::PanelDockZone, unsigned int> mDockZoneIDs;
 
     private: