[studio] Add a file explorer to NewMenu to choose where new files go

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

@@ -4,41 +4,96 @@
 
 #pragma once
 
+#include <algorithm>
+
 #include <ox/std/memory.hpp>
 #include <ox/std/string.hpp>
 
 #include <turbine/context.hpp>
 
+#include "widget.hpp"
+
 namespace studio {
 
-class FileExplorer {
+constexpr void safeDelete(class FileTreeModel *m) noexcept;
+
+class FileExplorer: public ox::SignalHandler {
+
+	friend class FileTreeModel;
+
+	private:
+		keel::Context &m_kctx;
+		class FileTreeModel const *m_selected{};
+		bool const m_fileDraggable{};
+		ox::UPtr<FileTreeModel> m_treeModel;
 
 	public:
+		explicit FileExplorer(keel::Context &kctx, bool const fileDraggable = false) noexcept:
+			m_kctx{kctx},
+			m_fileDraggable{fileDraggable} {}
+
 		virtual ~FileExplorer() = default;
 
-		virtual void fileOpened(ox::StringViewCR path) const noexcept = 0;
+		void draw(StudioContext &ctx, ImVec2 const &sz) const noexcept;
 
-		virtual void drawFileContextMenu(ox::StringViewCR path) const noexcept = 0;
+		void setModel(ox::UPtr<FileTreeModel> &&model, bool selectRoot = false) noexcept;
 
-		virtual void drawDirContextMenu(ox::StringViewCR path) const noexcept = 0;
+		ox::Error setSelectedPath(ox::StringViewCR path) noexcept;
+
+		[[nodiscard]]
+		ox::Optional<ox::String> selectedPath() const;
+
+		virtual void fileOpened(ox::StringViewCR path) const noexcept;
+
+		void drawFileContextMenu(ox::CStringViewCR path) const noexcept;
+
+		void drawDirContextMenu(ox::CStringViewCR path) const noexcept;
+
+		[[nodiscard]]
+		ox::FileSystem &romFs() const noexcept {
+			return *m_kctx.rom;
+		}
+
+	protected:
+		virtual void fileContextMenu(ox::StringViewCR path) const noexcept;
+
+		virtual void dirContextMenu(ox::StringViewCR path) const noexcept;
+
+		void setSelectedNode(FileTreeModel const *const node) noexcept {
+			m_selected = node;
+		}
+
+		[[nodiscard]]
+		bool selected(FileTreeModel const *const node) const noexcept {
+			return m_selected == node;
+		}
+
+		[[nodiscard]]
+		bool fileDraggable() const noexcept {
+			return m_fileDraggable;
+		}
+
+	private:
+		ox::Result<bool> setSelectedPath(ox::StringViewCR path, FileTreeModel const&node) noexcept;
 
 };
 
 class FileTreeModel {
 	private:
 		FileExplorer &m_explorer;
-		FileTreeModel *m_parent = nullptr;
 		ox::String m_name;
-		ox::String m_fullPath{m_parent ? m_parent->m_fullPath + "/" + m_name : ox::String{}};
-		ox::String m_imguiNodeName{ox::sfmt("{}##{}", m_name, m_fullPath)};
+		ox::String m_fullPath;
 		ox::Vector<ox::UPtr<FileTreeModel>> m_children;
+		ox::FileType const m_fileType{};
 
 	public:
-		virtual ~FileTreeModel() = default;
-
 		explicit FileTreeModel(
-			FileExplorer &explorer, ox::StringParam name,
-			FileTreeModel *parent = nullptr) noexcept;
+			FileExplorer &explorer,
+			ox::StringParam name,
+			ox::FileType fileType,
+			FileTreeModel const *parent = nullptr) noexcept;
+
+		virtual ~FileTreeModel() = default;
 
 		FileTreeModel(FileTreeModel &&other) noexcept = default;
 
@@ -46,6 +101,38 @@ class FileTreeModel {
 
 		void setChildren(ox::Vector<ox::UPtr<FileTreeModel>> children) noexcept;
 
+		[[nodiscard]]
+		ox::Vector<ox::UPtr<FileTreeModel>> const&children() const noexcept {
+			return m_children;
+		}
+
+		[[nodiscard]]
+		bool isEmptyDir() const noexcept;
+
+		[[nodiscard]]
+		ox::String const &path() const noexcept {
+			return m_fullPath;
+		}
+
 };
 
+constexpr void safeDelete(FileTreeModel *m) noexcept {
+	delete m;
+}
+
+ox::Result<ox::UPtr<FileTreeModel>> buildFileTreeModel(
+		FileExplorer &explorer,
+		ox::StringParam name,
+		ox::StringViewCR path,
+		FileTreeModel *parent = nullptr,
+		std::function<bool(ox::StringViewCR, ox::FileStat const&)> const&filter =
+			[](ox::StringViewCR, ox::FileStat const&) {return true;},
+		bool showEmptyDirs = true) noexcept;
+
+ox::Result<ox::UPtr<FileTreeModel>> buildFileTreeModel(
+		FileExplorer &explorer,
+		std::function<bool(ox::StringViewCR, ox::FileStat const&)> const&filter =
+			[](ox::StringViewCR, ox::FileStat const&) {return true;},
+		bool showEmptyDirs = true) noexcept;
+
 }

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

@@ -95,9 +95,9 @@ class ItemMaker {
 	public:
 		constexpr ItemMaker(
 				ox::StringParam pName,
-				ox::StringParam pParentDir,
+				ox::StringViewCR pParentDir,
 				ox::StringParam pFileExt) noexcept:
-			m_parentDir{std::move(pParentDir)},
+			m_parentDir{sfmt("/{}", pParentDir)},
 			m_fileExt{std::move(pFileExt)},
 			m_typeDisplayName{std::move(pName)} {
 		}
@@ -128,6 +128,11 @@ class ItemMaker {
 			return m_templates;
 		}
 
+		[[nodiscard]]
+		ox::String const&fileExt() const noexcept {
+			return m_fileExt;
+		}
+
 		[[nodiscard]]
 		ox::String const&defaultPath() const noexcept {
 			return m_parentDir;
@@ -140,7 +145,7 @@ class ItemMaker {
 
 		[[nodiscard]]
 		ox::String itemPath(ox::StringViewCR pName) const noexcept {
-			return ox::sfmt("/{}/{}.{}", m_parentDir, pName, m_fileExt);
+			return ox::sfmt("{}/{}.{}", m_parentDir, pName, m_fileExt);
 		}
 
 		[[nodiscard]]
@@ -196,12 +201,12 @@ class ItemMakerT final: public ItemMaker {
 	public:
 		constexpr ItemMakerT(
 				ox::StringParam pDisplayName,
-				ox::StringParam pParentDir,
+				ox::StringViewCR pParentDir,
 				ox::StringParam fileExt,
 				ox::ClawFormat const pFmt = ox::ClawFormat::Metal) noexcept:
 				ItemMaker(
 					std::move(pDisplayName),
-					std::move(pParentDir),
+					pParentDir,
 					std::move(fileExt)),
 				m_fmt{pFmt} {
 			installTemplate(ox::make_unique<ItemTemplateT<T>>());
@@ -209,13 +214,13 @@ class ItemMakerT final: public ItemMaker {
 
 		constexpr ItemMakerT(
 				ox::StringParam pDisplayName,
-				ox::StringParam pParentDir,
+				ox::StringViewCR pParentDir,
 				ox::StringParam fileExt,
 				T const&pItem,
 				ox::ClawFormat const pFmt) noexcept:
 				ItemMaker(
 					std::move(pDisplayName),
-					std::move(pParentDir),
+					pParentDir,
 					std::move(fileExt)),
 				m_fmt{pFmt} {
 			installTemplate(ox::make_unique<ItemTemplateT<T>>("Default", std::move(pItem)));
@@ -223,13 +228,13 @@ class ItemMakerT final: public ItemMaker {
 
 		constexpr ItemMakerT(
 				ox::StringParam pDisplayName,
-				ox::StringParam pParentDir,
+				ox::StringViewCR pParentDir,
 				ox::StringParam fileExt,
 				T &&pItem,
 				ox::ClawFormat const pFmt) noexcept:
 				ItemMaker(
 					std::move(pDisplayName),
-					std::move(pParentDir),
+					pParentDir,
 					std::move(fileExt)),
 				m_fmt{pFmt} {
 			installTemplate(ox::make_unique<ItemTemplateT<T>>("Default", std::move(pItem)));

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

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2016 - 2025 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include <ox/std/memory.hpp>
+#include <ox/std/string.hpp>
+
+#include <turbine/context.hpp>
+
+#include <studio/filetreemodel.hpp>
+
+namespace studio {
+
+}

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

@@ -9,6 +9,7 @@
 #include <studio/dragdrop.hpp>
 #include <studio/editor.hpp>
 #include <studio/filedialog.hpp>
+#include <studio/filetreemodel.hpp>
 #include <studio/imguiutil.hpp>
 #include <studio/module.hpp>
 #include <studio/itemmaker.hpp>