[olympic] Add more ImGui helpers, studio::Editor::pushCommand

src/olympic/studio/modlib/include/studio/editor.hpp

@@ -131,6 +131,17 @@ class Editor: public studio::BaseEditor {
 		[[nodiscard]]
 		UndoStack *undoStack() noexcept final;
 
+		void pushCommand(ox::UPtr<UndoCommand> &&cmd) noexcept;
+
+		template<typename UC, typename ...Args>
+		void pushCommand(Args&&... args) noexcept {
+			try {
+				m_undoStack.push(ox::make_unique<UC>(ox::forward<Args>(args)...));
+			} catch (ox::Exception const&ex) {
+				oxLogError(ex.toError());
+			}
+		}
+
 	private:
 		ox::Error markUnsavedChanges(UndoCommand const*) noexcept;
 };

src/olympic/studio/modlib/include/studio/imguiutil.hpp

@@ -7,6 +7,7 @@
 #include <imgui.h>
 
 #include <turbine/context.hpp>
+#include <studio/context.hpp>
 
 namespace studio::ig {
 
@@ -52,4 +53,41 @@ bool BeginPopup(turbine::Context &ctx, ox::CStringView popupName, bool &show, Im
  */
 bool ComboBox(ox::CStringView lbl, ox::SpanView<ox::String> list, size_t &selectedIdx) noexcept;
 
+bool FileComboBox(
+		ox::CStringView lbl,
+		studio::StudioContext &sctx,
+		ox::StringView fileExt,
+		size_t &selectedIdx) noexcept;
+
+/**
+ *
+ * @param name
+ * @param list
+ * @param selIdx
+ * @return true if new value selected, false otherwise
+ */
+bool ListBox(ox::CStringView name, ox::SpanView<ox::String> const&list, size_t &selIdx) noexcept;
+
+class FilePicker {
+	private:
+		bool m_show{};
+		studio::StudioContext &m_sctx;
+		ox::String const m_title;
+		ox::String const m_fileExt;
+		ImVec2 const m_size;
+	public:
+		ox::Signal<ox::Error(ox::StringView)> filePicked;
+
+		FilePicker(
+				studio::StudioContext &sctx,
+				ox::String title,
+				ox::String fileExt,
+				ImVec2 const&size = {}) noexcept;
+
+		void draw() noexcept;
+
+		void show() noexcept;
+
+};
+
 }

src/olympic/studio/modlib/src/editor.cpp

@@ -127,6 +127,10 @@ ox::CStringView Editor::itemDisplayName() const noexcept {
 	return m_itemName;
 }
 
+void Editor::pushCommand(ox::UPtr<UndoCommand> &&cmd) noexcept {
+	m_undoStack.push(std::move(cmd));
+}
+
 UndoStack *Editor::undoStack() noexcept {
 	return &m_undoStack;
 }

src/olympic/studio/modlib/src/imguiutil.cpp

@@ -92,4 +92,76 @@ bool ComboBox(
 	return out;
 }
 
+bool FileComboBox(
+		ox::CStringView lbl,
+		studio::StudioContext &sctx,
+		ox::StringView fileExt,
+		size_t &selectedIdx) noexcept {
+	auto const&list = sctx.project->fileList(fileExt);
+	bool out{};
+	auto const first = selectedIdx < list.size() ? list[selectedIdx].c_str() : "";
+	if (ImGui::BeginCombo(lbl.c_str(), first, 0)) {
+		for (auto i = 0u; i < list.size(); ++i) {
+			const auto selected = (selectedIdx == i);
+			if (ImGui::Selectable(list[i].c_str(), selected) && selectedIdx != i) {
+				selectedIdx = i;
+				out = true;
+			}
+		}
+		ImGui::EndCombo();
+	}
+	return out;
+}
+
+bool ListBox(ox::CStringView name, ox::SpanView<ox::String> const&list, size_t &selIdx) noexcept {
+	auto out = false;
+	if (ImGui::BeginListBox(name.c_str())) {
+		for (auto i = 0u; auto const&obj : list) {
+			ig::IDStackItem const idStackItem2(static_cast<int>(i));
+			if (ImGui::Selectable(obj.c_str(), selIdx == i)) {
+				if (i != selIdx) {
+					selIdx = i;
+					out = true;
+				}
+			}
+			++i;
+		}
+		ImGui::EndListBox();
+	}
+	return out;
+}
+
+
+FilePicker::FilePicker(
+		studio::StudioContext &sctx,
+		ox::String title,
+		ox::String fileExt,
+		ImVec2 const&size) noexcept:
+	m_sctx(sctx),
+	m_title(std::move(title)),
+	m_fileExt(std::move(fileExt)),
+	m_size(size) {
+}
+
+void FilePicker::draw() noexcept {
+	if (!m_show) {
+		return;
+	}
+	auto constexpr popupSz = ImVec2{450.f, 0};
+	ig::IDStackItem const idStackItem(m_title.c_str());
+	if (ig::BeginPopup(m_sctx.tctx, m_title.c_str(), m_show, popupSz)) {
+		auto const&list = m_sctx.project->fileList(m_fileExt);
+		size_t selIdx{};
+		ig::ComboBox(m_title.c_str(), list, selIdx);
+		if (ig::PopupControlsOkCancel(popupSz.x, m_show) == ig::PopupResponse::OK) {
+			filePicked.emit(list[selIdx]);
+		}
+		ImGui::EndPopup();
+	}
+}
+
+void FilePicker::show() noexcept {
+	m_show = true;
+}
+
 }