Refactor ContentDB integration (#14507)

builtin/mainmenu/content/dlg_overwrite.lua

@@ -0,0 +1,53 @@
+--Minetest
+--Copyright (C) 2018-24 rubenwardy
+--
+--This program is free software; you can redistribute it and/or modify
+--it under the terms of the GNU Lesser General Public License as published by
+--the Free Software Foundation; either version 2.1 of the License, or
+--(at your option) any later version.
+--
+--This program is distributed in the hope that it will be useful,
+--but WITHOUT ANY WARRANTY; without even the implied warranty of
+--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--GNU Lesser General Public License for more details.
+--
+--You should have received a copy of the GNU Lesser General Public License along
+--with this program; if not, write to the Free Software Foundation, Inc.,
+--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+function get_formspec(data)
+	local package = data.package
+
+	return confirmation_formspec(
+			fgettext("\"$1\" already exists. Would you like to overwrite it?", package.name),
+			'install', fgettext("Overwrite"),
+			'cancel', fgettext("Cancel"))
+end
+
+
+local function handle_submit(this, fields)
+	local data = this.data
+	if fields.cancel then
+		this:delete()
+		return true
+	end
+
+	if fields.install then
+		this:delete()
+		data.callback()
+		return true
+	end
+
+	return false
+end
+
+
+function create_confirm_overwrite(package, callback)
+	assert(type(package) == "table")
+	assert(type(callback) == "function")
+
+	local dlg = dialog_create("data", get_formspec, handle_submit, nil)
+	dlg.data.package = package
+	dlg.data.callback = callback
+	return dlg
+end