[studio] Add ability to drag files between directories

src/olympic/studio/applib/src/projectexplorer.cpp

@@ -26,6 +26,10 @@ void ProjectExplorer::fileDeleted(ox::StringViewCR path) const noexcept {
 	deleteItem.emit(path);
 }
 
+void ProjectExplorer::fileMoved(ox::StringViewCR src, ox::StringViewCR dst) const noexcept {
+	moveItem.emit(src, dst);
+}
+
 void ProjectExplorer::fileContextMenu(ox::StringViewCR path) const noexcept {
 	if (ImGui::BeginPopupContextItem("FileMenu", ImGuiPopupFlags_MouseButtonRight)) {
 		if (ImGui::MenuItem("Delete")) {

src/olympic/studio/applib/src/projectexplorer.hpp

@@ -20,6 +20,7 @@ class ProjectExplorer final: public FileExplorer {
 		ox::Signal<ox::Error(ox::StringViewCR)> addDir;
 		ox::Signal<ox::Error(ox::StringViewCR)> deleteItem;
 		ox::Signal<ox::Error(ox::StringViewCR)> renameItem;
+		ox::Signal<ox::Error(ox::StringViewCR src, ox::StringViewCR dst)> moveItem;
 
 		explicit ProjectExplorer(keel::Context &kctx) noexcept;
 
@@ -30,6 +31,8 @@ class ProjectExplorer final: public FileExplorer {
 
 		void fileDeleted(ox::StringViewCR path) const noexcept override;
 
+		void fileMoved(ox::StringViewCR src, ox::StringViewCR dst) const noexcept override;
+
 		void fileContextMenu(ox::StringViewCR path) const noexcept override;
 
 		void dirContextMenu(ox::StringViewCR path) const noexcept override;

src/olympic/studio/applib/src/studioapp.cpp

@@ -59,6 +59,8 @@ StudioUI::StudioUI(turbine::Context &ctx, ox::StringParam projectDataDir) noexce
 	m_projectExplorer.addItem.connect(this, &StudioUI::addFile);
 	m_projectExplorer.deleteItem.connect(this, &StudioUI::deleteFile);
 	m_projectExplorer.renameItem.connect(this, &StudioUI::renameFile);
+	m_projectExplorer.moveItem.connect(this, &StudioUI::queueFileMove);
+	m_renameFile.moveFile.connect(this, &StudioUI::queueFileMove);
 	m_newProject.finished.connect(this, &StudioUI::createOpenProject);
 	m_newMenu.finished.connect(this, &StudioUI::openFile);
 	loadModules();
@@ -135,6 +137,7 @@ void StudioUI::draw() noexcept {
 	ImGui::End();
 	handleKeyInput();
 	m_taskRunner.update(m_tctx);
+	procFileMoves();
 }
 
 void StudioUI::drawMenu() noexcept {
@@ -409,7 +412,6 @@ ox::Error StudioUI::openProjectPath(ox::StringParam path) noexcept {
 	m_sctx.project = m_project.get();
 	turbine::setWindowTitle(m_tctx, ox::sfmt("{} - {}", keelCtx(m_tctx).appName, m_project->projectPath()));
 	m_deleteConfirmation.deleteFile.connect(m_sctx.project, &Project::deleteItem);
-	m_renameFile.moveFile.connect(m_project.get(), &Project::moveItem);
 	m_newDirDialog.newDir.connect(m_sctx.project, &Project::mkdir);
 	m_project->dirAdded.connect(&m_projectExplorer, &ProjectExplorer::refreshProjectTreeModel);
 	m_project->fileAdded.connect(&m_projectExplorer, &ProjectExplorer::refreshProjectTreeModel);
@@ -484,4 +486,16 @@ ox::Error StudioUI::closeFile(ox::StringViewCR path) noexcept {
 	return {};
 }
 
+ox::Error StudioUI::queueFileMove(ox::StringParam src, ox::StringParam dst) noexcept {
+	m_queuedMoves.emplace_back(std::move(src), std::move(dst));
+	return {};
+}
+
+void StudioUI::procFileMoves() noexcept {
+	for (auto const &m : m_queuedMoves) {
+		oxLogError(m_project->moveItem(m.a, m.b));
+	}
+	m_queuedMoves.clear();
+}
+
 }

src/olympic/studio/applib/src/studioapp.hpp

@@ -40,6 +40,7 @@ class StudioUI: public ox::SignalHandler {
 		BaseEditor *m_activeEditorOnLastDraw = nullptr;
 		BaseEditor *m_activeEditor = nullptr;
 		BaseEditor *m_activeEditorUpdatePending = nullptr;
+		ox::Vector<ox::Pair<ox::String, ox::String>> m_queuedMoves;
 		NewMenu m_newMenu{keelCtx(m_tctx)};
 		DeleteConfirmation m_deleteConfirmation;
 		NewDir m_newDirDialog;
@@ -111,6 +112,11 @@ class StudioUI: public ox::SignalHandler {
 		ox::Error openFileActiveTab(ox::StringViewCR path, bool makeActiveTab) noexcept;
 
 		ox::Error closeFile(ox::StringViewCR path) noexcept;
+
+		ox::Error queueFileMove(ox::StringParam src, ox::StringParam dst) noexcept;
+
+		void procFileMoves() noexcept;
+
 };
 
 }

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

@@ -45,6 +45,8 @@ class FileExplorer: public ox::SignalHandler {
 
 		virtual void fileDeleted(ox::StringViewCR path) const noexcept;
 
+		virtual void fileMoved(ox::StringViewCR src, ox::StringViewCR dst) const noexcept;
+
 		void drawFileContextMenu(ox::CStringViewCR path) const noexcept;
 
 		void drawDirContextMenu(ox::CStringViewCR path) const noexcept;

src/olympic/studio/modlib/src/filetreemodel.cpp

@@ -41,6 +41,8 @@ void FileExplorer::fileOpened(ox::StringViewCR) const noexcept {}
 
 void FileExplorer::fileDeleted(ox::StringViewCR) const noexcept {}
 
+void FileExplorer::fileMoved(ox::StringViewCR, ox::StringViewCR) const noexcept {}
+
 void FileExplorer::drawFileContextMenu(ox::CStringViewCR path) const noexcept {
 	ig::IDStackItem const idStackItem{path};
 	fileContextMenu(path);
@@ -91,6 +93,13 @@ void FileTreeModel::draw(turbine::Context &tctx) const noexcept {
 		}
 		ig::IDStackItem const idStackItem{m_name};
 		m_explorer.drawDirContextMenu(m_fullPath);
+		if (ig::DragDropTarget const dragDropTarget; dragDropTarget) {
+			auto const [ref, err] = ig::getDragDropPayload<FileRef>("FileRef");
+			if (!err) {
+				auto const name = substr(ref.path, find(ref.path.rbegin(), ref.path.rend(), '/').offset() + 1);
+				m_explorer.fileMoved(ref.path, sfmt("{}/{}", m_fullPath, name));
+			}
+		}
 		if (nodeOpen) {
 			for (auto const&child : m_children) {
 				child->draw(tctx);