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service_widget.rb
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service_widget.rb
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# encoding: utf-8
# Copyright (c) [2018] SUSE LLC
#
# All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 of the GNU General Public License as published
# by the Free Software Foundation.
#
# 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 General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, contact SUSE LLC.
#
# To contact SUSE LLC about this file by physical or electronic mail, you may
# find current contact information at www.suse.com.
require "yast"
Yast.import "UI"
module Yast2
# Class that represents widget that allows configuration of services.
# It uses to hold configuration {Yast2::SystemService} or {Yast2::CompoundService}.
# It can work with both and for usage it really depends if it should configure single
# or multiple services
#
# @example usage of widget with workflow with read + propose + show_dialog + write
# class Workflow
# def initialize
# @service = Yast2::SystemService.find("my_service")
# end
#
# def propose
# @service.action = :restart
# @service.start_mode = :on_demand
# end
#
# def show_dialog
# service_widget = ServiceWidget.new(@service)
# content = VBox(
# ...,
# service_widget.content
# )
# loop do
# input = UI.UserInput
# service_widget.handle_input(input)
# ...
# end
# service_widget.store
# end
#
# def write
# @service.save
# end
# end
class ServiceWidget
include Yast::I18n
include Yast::Logger
include Yast::UIShortcuts
# creates new widget instance for given service
# @param service [Yast2::SystemService,Yast2::CompoundService] service
def initialize(service)
textdomain "base"
@service = service
end
# gets widget term
# @return <Yast::Term>
def content
Frame(
_("Service Configuration"),
VBox(
Left(
HBox(
Label(_("Current status:")),
Label(" "),
Label(Id(:service_widget_status), status)
)
),
Left(action_widget),
Left(autostart_widget)
)
)
end
# Updates the widget with current values of service
#
# Useful to update the information after certain actions like "Apply changes"
#
# @return [nil]
def refresh
Yast::UI.ChangeWidget(Id(:service_widget_status), :Value, status)
Yast::UI.ChangeWidget(Id(:service_widget_action), :Items, action_items)
Yast::UI.ChangeWidget(Id(:service_widget_autostart), :Items, autostart_items)
nil
end
# handles event to dynamically react on user configuration.
# For events that does not happen inside widget it is ignored.
# @param event_id [Object] id of UI element that cause event
# @return [nil] it returns nil as it should allow to continue dialog loop
def handle_input(event_id)
log.info "handle event #{event_id}"
nil
end
# Stores current configuration. Should be called always before dialog close, even when going
# back so configuration is persistent when going again forward.
# @note it requires content of dialog to query, so cannot be called after DialogClose or if
# another dialog is displayed instead of the one with {#content}
def store
service.reset # so we start from scratch
store_action
store_autostart
end
private
attr_reader :service
def store_action
action = Yast::UI.QueryWidget(Id(:service_widget_action), :Value)
return unless action
action = action.to_s.sub(/^service_widget_action_/, "").to_sym
return if action == :nothing
service.public_send(action)
end
def store_autostart
autostart = Yast::UI.QueryWidget(Id(:service_widget_autostart), :Value)
return unless autostart
autostart = autostart.to_s.sub(/^service_widget_autostart_/, "").to_sym
return if autostart == :inconsistent
service.start_mode = autostart
end
def status
case service.currently_active?
# TRANSLATORS: Status of service
when true
_("Active")
when false
# TRANSLATORS: Status of service
_("Inactive")
when :inconsistent
# TRANSLATORS: Status of service
_("Partly Active")
else
raise "Unknown status #{service.currently_active?.inspect}"
end
end
def action_widget
ComboBox(
Id(:service_widget_action),
_("After writing configuration:"),
action_items
)
end
def action_items
current_action = service.action
res = []
res << Item(Id(:service_widget_action_start), _("Start"), current_action == :start) if service.currently_active? != true
res << Item(Id(:service_widget_action_stop), _("Stop"), current_action == :stop) if service.currently_active? != false
res << Item(Id(:service_widget_action_restart), _("Restart"), current_action == :restart) if service.currently_active? != false
res << Item(Id(:service_widget_action_reload), _("Reload"), current_action == :reload) if service.currently_active? != false && service.support_reload?
res << Item(Id(:service_widget_action_nothing), _("Keep current state"), current_action.nil?)
res
end
def autostart_widget
ComboBox(
Id(:service_widget_autostart),
_("After reboot:"),
autostart_items
)
end
def autostart_items
current_start_mode = service.start_mode
system_start_mode = service.current_start_mode
res = []
res << Item(Id(:service_widget_autostart_on_boot), _("Start on boot"), current_start_mode == :on_boot)
res << Item(Id(:service_widget_autostart_on_demand), _("Start on demand"), current_start_mode == :on_demand) if service.support_start_on_demand?
res << Item(Id(:service_widget_autostart_manual), _("Do not start"), current_start_mode == :manual)
res << Item(Id(:service_widget_autostart_inconsistent), _("Keep current settings"), current_start_mode == :inconsistent) if system_start_mode == :inconsistent
res
end
end
end