minetest/builtin/mainmenu/dlg_delete_content.lua

--Minetest
--Copyright (C) 2014 sapier
--
--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.

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local function delete_content_formspec(dialogdata)
	return confirmation_formspec(
		fgettext("Are you sure you want to delete \"$1\"?", dialogdata.content.name),
		'dlg_delete_content_confirm', fgettext("Delete"),
		'dlg_delete_content_cancel', fgettext("Cancel"))
end

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local function delete_content_buttonhandler(this, fields)
	if fields["dlg_delete_content_confirm"] ~= nil then

		if this.data.content.path ~= nil and
				this.data.content.path ~= "" and
				this.data.content.path ~= core.get_modpath() and
				this.data.content.path ~= core.get_gamepath() and
				this.data.content.path ~= core.get_texturepath() then
			if not core.delete_dir(this.data.content.path) then
				gamedata.errormessage = fgettext_ne("pkgmgr: failed to delete \"$1\"", this.data.content.path)
			end

			pkgmgr.reload_by_type(this.data.content.type)
		else
			gamedata.errormessage = fgettext_ne("pkgmgr: invalid path \"$1\"", this.data.content.path)
		end
		this:delete()
		return true
	end

	if fields["dlg_delete_content_cancel"] then
		this:delete()
		return true
	end

	return false
end

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function create_delete_content_dlg(content)
	assert(content.name)

	local retval = dialog_create("dlg_delete_content",
					delete_content_formspec,
					delete_content_buttonhandler,
					nil)
	retval.data.content = content
	return retval
end