[nostalgia/core/studio] Add support for TileSheetEditor unsaved changes status

src/nostalgia/core/studio/tilesheeteditor-imgui.cpp

@@ -17,6 +17,7 @@ TileSheetEditorImGui::TileSheetEditorImGui(Context *ctx, const ox::String &path)
 	m_itemPath = path;
 	const auto lastSlash = std::find(m_itemPath.rbegin(), m_itemPath.rend(), '/').offset();
 	m_itemName = m_itemPath.substr(lastSlash + 1);
+	undoStack()->changeTriggered.connect(this, &TileSheetEditorImGui::markUnsavedChanges);
 }
 
 ox::String TileSheetEditorImGui::itemName() const noexcept {
@@ -142,4 +143,10 @@ void TileSheetEditorImGui::drawPalettePicker() noexcept {
 	}
 }
 
-}
+ox::Error TileSheetEditorImGui::markUnsavedChanges() noexcept {
+	oxDebug("markUnsavedChanges");
+	setUnsavedChanges(true);
+	return OxError(0);
+}
+
+}

src/nostalgia/core/studio/tilesheeteditor-imgui.hpp

@@ -69,16 +69,12 @@ class TileSheetEditorImGui: public studio::Editor {
 
 		void drawPalettePicker() noexcept;
 
-	// slots
-	public:
-		ox::Error colorSelected() noexcept;
-
-		ox::Error setColorTable() noexcept;
-
 	// slots
 	private:
 		ox::Error updateAfterClicked() noexcept;
 
+		ox::Error markUnsavedChanges() noexcept;
+
 };
 
 }

src/nostalgia/core/studio/tilesheeteditormodel.hpp

@@ -121,7 +121,7 @@ class TileSheetEditorModel: public ox::SignalHandler {
 	public:
 		TileSheetEditorModel(Context *ctx, const ox::String &path);
 
-		~TileSheetEditorModel() = default;
+		~TileSheetEditorModel() override = default;
 
 		void cut();