[nostalgia] Add basic support for subsheets

src/nostalgia/studio/lib/project.hpp

@@ -50,8 +50,7 @@ class NOSTALGIASTUDIO_EXPORT Project {
 		/**
 		 * Writes a MetalClaw object to the project at the given path.
 		 */
-		template<typename T>
-		ox::Error writeObj(const ox::String &path, T *obj) const noexcept;
+		ox::Error writeObj(const ox::String &path, auto *obj) const noexcept;
 
 		template<typename T>
 		ox::Result<ox::UniquePtr<T>> loadObj(const ox::String &path) const noexcept;
@@ -86,8 +85,7 @@ class NOSTALGIASTUDIO_EXPORT Project {
 
 };
 
-template<typename T>
-ox::Error Project::writeObj(const ox::String &path, T *obj) const noexcept {
+ox::Error Project::writeObj(const ox::String &path, auto *obj) const noexcept {
 	// write MetalClaw
 	oxRequireM(buff, ox::writeClaw(obj, ox::ClawFormat::Metal));
 	// write to FS

src/nostalgia/studio/lib/task.hpp

@@ -17,7 +17,7 @@ enum class TaskState {
 
 class Task: public ox::SignalHandler {
 	public:
-		virtual ~Task() noexcept = default;
+		~Task() noexcept override = default;
 		virtual TaskState update(nostalgia::core::Context *ctx) noexcept = 0;
 };
 

src/nostalgia/studio/lib/undostack.cpp

@@ -12,25 +12,30 @@ void UndoStack::push(UndoCommand *cmd) noexcept {
 	}
 	m_stack.emplace_back(cmd);
 	++m_stackIdx;
+	auto cmdId = cmd->commandId();
 	cmd->redo();
-	redoTriggered.emit();
-	changeTriggered.emit();
+	redoTriggered.emit(cmdId);
+	changeTriggered.emit(cmdId);
 }
 
 void UndoStack::redo() noexcept {
 	if (m_stackIdx < m_stack.size()) {
-		m_stack[m_stackIdx++]->redo();
+		auto &c = m_stack[m_stackIdx++];
+		auto cmdId = c->commandId();
+		c->redo();
+		redoTriggered.emit(cmdId);
+		changeTriggered.emit(cmdId);
 	}
-	redoTriggered.emit();
-	changeTriggered.emit();
 }
 
 void UndoStack::undo() noexcept {
 	if (m_stackIdx) {
-		m_stack[--m_stackIdx]->undo();
+		auto &c = m_stack[--m_stackIdx];
+		auto cmdId = c->commandId();
+		c->undo();
+		undoTriggered.emit(cmdId);
+		changeTriggered.emit(cmdId);
 	}
-	undoTriggered.emit();
-	changeTriggered.emit();
 }
 
 }

src/nostalgia/studio/lib/undostack.hpp

@@ -16,6 +16,8 @@ class UndoCommand {
 		virtual ~UndoCommand() noexcept = default;
 		virtual void redo() noexcept = 0;
 		virtual void undo() noexcept = 0;
+		[[nodiscard]]
+		virtual int commandId() const noexcept = 0;
 };
 
 class UndoStack {
@@ -40,9 +42,9 @@ class UndoStack {
 			return m_stackIdx;
 		}
 
-		ox::Signal<ox::Error()> redoTriggered;
-		ox::Signal<ox::Error()> undoTriggered;
-		ox::Signal<ox::Error()> changeTriggered;
+		ox::Signal<ox::Error(int)> redoTriggered;
+		ox::Signal<ox::Error(int)> undoTriggered;
+		ox::Signal<ox::Error(int)> changeTriggered;
 };
 
 }

src/nostalgia/studio/lib/widget.hpp

@@ -12,7 +12,8 @@ namespace nostalgia::studio {
 
 class Widget: public ox::SignalHandler {
 	public:
+		~Widget() noexcept override = default;
 		virtual void draw(core::Context*) noexcept = 0;
 };
 
-}
+}