add ManageActiveEditors, reorderable tabbed editor view

src/app/editor/master_editor.cc

@@ -169,9 +169,63 @@ absl::Status MasterEditor::Update() {
     rom_assets_loaded_ = true;
   }
 
-  TAB_BAR("##TabBar")
+  ManageActiveEditors();
-  auto current_tab_bar = ImGui::GetCurrentContext()->CurrentTabBar;
 
+  ImGui::End();
+
+  return absl::OkStatus();
+}
+
+void MasterEditor::ManageActiveEditors() {
+  // Show popup pane to select an editor to add
+  static bool show_add_editor = false;
+  if (show_add_editor) ImGui::OpenPopup("AddEditor");
+
+  if (ImGui::BeginPopup("AddEditor", ImGuiWindowFlags_AlwaysAutoResize)) {
+    if (ImGui::MenuItem("Overworld")) {
+      active_editors_.push_back(&overworld_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Dungeon")) {
+      active_editors_.push_back(&dungeon_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Graphics")) {
+      active_editors_.push_back(&graphics_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Music")) {
+      active_editors_.push_back(&music_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Palette")) {
+      active_editors_.push_back(&palette_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Screen")) {
+      active_editors_.push_back(&screen_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Sprite")) {
+      active_editors_.push_back(&sprite_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    if (ImGui::MenuItem("Code")) {
+      active_editors_.push_back(&assembly_editor_);
+      ImGui::CloseCurrentPopup();
+    }
+    ImGui::EndPopup();
+  }
+
+  if (!ImGui::IsPopupOpen("AddEditor")) {
+    show_add_editor = false;
+  }
+
+  if (ImGui::BeginTabBar("##TabBar", ImGuiTabBarFlags_Reorderable |
+                                         ImGuiTabBarFlags_AutoSelectNewTabs)) {
+    for (auto editor : active_editors_) {
+      switch (editor->type()) {
+        case EditorType::kOverworld:
           if (overworld_editor_.jump_to_tab() == -1) {
             if (ImGui::BeginTabItem("Overworld")) {
               current_editor_ = &overworld_editor_;
@@ -179,7 +233,8 @@ absl::Status MasterEditor::Update() {
               ImGui::EndTabItem();
             }
           }
-
+          break;
+        case EditorType::kDungeon:
           if (ImGui::BeginTabItem("Dungeon")) {
             current_editor_ = &dungeon_editor_;
             status_ = dungeon_editor_.Update();
@@ -189,42 +244,60 @@ absl::Status MasterEditor::Update() {
             }
             ImGui::EndTabItem();
           }
-
+          break;
+        case EditorType::kGraphics:
+          current_editor_ = &graphics_editor_;
           if (ImGui::BeginTabItem("Graphics")) {
             status_ = graphics_editor_.Update();
             ImGui::EndTabItem();
           }
-
+          break;
-  if (ImGui::BeginTabItem("Sprites")) {
+        case EditorType::kMusic:
-    status_ = sprite_editor_.Update();
+          current_editor_ = &music_editor_;
+          if (ImGui::BeginTabItem("Music")) {
+            status_ = music_editor_.Update();
             ImGui::EndTabItem();
           }
-
+          break;
-  if (ImGui::BeginTabItem("Palettes")) {
+        case EditorType::kPalette:
+          current_editor_ = &palette_editor_;
+          if (ImGui::BeginTabItem("Palette")) {
             status_ = palette_editor_.Update();
             ImGui::EndTabItem();
           }
-
+          break;
-  if (ImGui::BeginTabItem("Screens")) {
+        case EditorType::kScreen:
-    screen_editor_.Update();
+          current_editor_ = &screen_editor_;
+          if (ImGui::BeginTabItem("Screen")) {
+            status_ = screen_editor_.Update();
             ImGui::EndTabItem();
           }
-
+          break;
-  if (ImGui::BeginTabItem("Music")) {
+        case EditorType::kSprite:
-    music_editor_.Update();
+          current_editor_ = &sprite_editor_;
+          if (ImGui::BeginTabItem("Sprite")) {
+            status_ = sprite_editor_.Update();
             ImGui::EndTabItem();
           }
-
+          break;
+        case EditorType::kAssembly:
           if (ImGui::BeginTabItem("Code")) {
+            current_editor_ = &assembly_editor_;
             assembly_editor_.UpdateCodeView();
             ImGui::EndTabItem();
           }
+          break;
+        default:
+          break;
+      }
+    }
 
-  END_TAB_BAR()
+    if (ImGui::TabItemButton("+", ImGuiTabItemFlags_Trailing)) {
+      show_add_editor = true;
+    }
 
-  ImGui::End();
+    ImGui::EndTabBar();
-
+  }
-  return absl::OkStatus();
 }
 
 void MasterEditor::DrawFileDialog() {

src/app/editor/master_editor.h

@@ -12,10 +12,10 @@
 #include "absl/status/status.h"
 #include "app/core/common.h"
 #include "app/core/constants.h"
+#include "app/editor/code/assembly_editor.h"
 #include "app/editor/context/gfx_context.h"
 #include "app/editor/dungeon_editor.h"
 #include "app/editor/graphics_editor.h"
-#include "app/editor/code/assembly_editor.h"
 #include "app/editor/modules/music_editor.h"
 #include "app/editor/modules/palette_editor.h"
 #include "app/editor/overworld_editor.h"
@@ -66,6 +66,8 @@ class MasterEditor : public SharedRom,
   auto quit() { return quit_; }
 
  private:
+  void ManageActiveEditors();
+
   void DrawFileDialog();
   void DrawStatusPopup();
   void DrawAboutPopup();
@@ -104,6 +106,9 @@ class MasterEditor : public SharedRom,
   ScreenEditor screen_editor_;
   SpriteEditor sprite_editor_;
 
+  std::vector<Editor*> active_editors_;
+  ImVector<int> active_tabs_;
+
   Editor* current_editor_ = nullptr;
 };