Allow folder checking in export preset file list

(cherry picked from commit 08a292fec3ce3fbaa7cec2be3cf2084a3d674036)

editor/project_export.cpp

@@ -659,15 +659,20 @@ void ProjectExportDialog::_fill_resource_tree() {
 
 bool ProjectExportDialog::_fill_tree(EditorFileSystemDirectory *p_dir, TreeItem *p_item, Ref<EditorExportPreset> &current, bool p_only_scenes) {
 
+	p_item->set_cell_mode(0, TreeItem::CELL_MODE_CHECK);
 	p_item->set_icon(0, get_icon("folder", "FileDialog"));
 	p_item->set_text(0, p_dir->get_name() + "/");
+	p_item->set_editable(0, true);
+	p_item->set_metadata(0, p_dir->get_path());
 
 	bool used = false;
+	bool checked = true;
 	for (int i = 0; i < p_dir->get_subdir_count(); i++) {
 
 		TreeItem *subdir = include_files->create_item(p_item);
 		if (_fill_tree(p_dir->get_subdir(i), subdir, current, p_only_scenes)) {
 			used = true;
+			checked = checked && subdir->is_checked(0);
 		} else {
 			memdelete(subdir);
 		}
@@ -689,10 +694,12 @@ bool ProjectExportDialog::_fill_tree(EditorFileSystemDirectory *p_dir, TreeItem
 		file->set_editable(0, true);
 		file->set_checked(0, current->has_export_file(path));
 		file->set_metadata(0, path);
+		checked = checked && file->is_checked(0);
 
 		used = true;
 	}
 
+	p_item->set_checked(0, checked);
 	return used;
 }
 
@@ -712,13 +719,53 @@ void ProjectExportDialog::_tree_changed() {
 	String path = item->get_metadata(0);
 	bool added = item->is_checked(0);
 
-	if (added) {
-		current->add_export_file(path);
+	if (path.ends_with("/")) {
+		_check_dir_recursive(item, added);
 	} else {
-		current->remove_export_file(path);
+		if (added) {
+			current->add_export_file(path);
+		} else {
+			current->remove_export_file(path);
+		}
+	}
+	_refresh_parent_checks(item); // Makes parent folder checked if all files/folders are checked.
+}
+
+void ProjectExportDialog::_check_dir_recursive(TreeItem *p_dir, bool p_checked) {
+	for (TreeItem *child = p_dir->get_children(); child; child = child->get_next()) {
+		String path = child->get_metadata(0);
+
+		child->set_checked(0, p_checked);
+		if (path.ends_with("/")) {
+			_check_dir_recursive(child, p_checked);
+		} else {
+			if (p_checked) {
+				get_current_preset()->add_export_file(path);
+			} else {
+				get_current_preset()->remove_export_file(path);
+			}
+		}
 	}
 }
 
+void ProjectExportDialog::_refresh_parent_checks(TreeItem *p_item) {
+	TreeItem *parent = p_item->get_parent();
+	if (!parent) {
+		return;
+	}
+
+	bool checked = true;
+	for (TreeItem *child = parent->get_children(); child; child = child->get_next()) {
+		checked = checked && child->is_checked(0);
+		if (!checked) {
+			break;
+		}
+	}
+	parent->set_checked(0, checked);
+
+	_refresh_parent_checks(parent);
+}
+
 void ProjectExportDialog::_export_pck_zip() {
 
 	export_pck_zip->popup_centered_ratio();

editor/project_export.h

@@ -123,6 +123,8 @@ private:
 	void _fill_resource_tree();
 	bool _fill_tree(EditorFileSystemDirectory *p_dir, TreeItem *p_item, Ref<EditorExportPreset> &current, bool p_only_scenes);
 	void _tree_changed();
+	void _check_dir_recursive(TreeItem *p_dir, bool p_checked);
+	void _refresh_parent_checks(TreeItem *p_item);
 
 	Variant get_drag_data_fw(const Point2 &p_point, Control *p_from);
 	bool can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const;