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.

--------------------------------------------------------------------------------

local function delete_content_formspec(dialogdata)
	local retval =
		"size[11.5,4.5,true]" ..
		"label[2,2;" ..
		fgettext("Are you sure you want to delete \"$1\"?", dialogdata.content.name) .. "]"..
		"button[3.25,3.5;2.5,0.5;dlg_delete_content_confirm;" .. fgettext("Delete") .. "]" ..
		"button[5.75,3.5;2.5,0.5;dlg_delete_content_cancel;" .. fgettext("Cancel") .. "]"

	return retval
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("pkgmgr: failed to delete \"$1\"", this.data.content.path)
			end

			if this.data.content.type == "game" then
				pkgmgr.update_gamelist()
			else
				pkgmgr.refresh_globals()
			end
		else
			gamedata.errormessage = fgettext("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