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/*
* Copyright (C) 2008,2009 Nokia Corporation.
* Copyright (C) 2008,2009 Zeeshan Ali (Khattak) <zeeshanak@gnome.org>.
* Copyright (C) 2012 Intel Corporation.
* Copyright (C) 2012 Intel Corporation
*
* Author: Zeeshan Ali (Khattak) <zeeshanak@gnome.org>
* <zeeshan.ali@nokia.com>
* Jens Georg <jensg@openismus.com>
* Krzesimir Nowak <krnowak@openismus.com>
*
* This file is part of Rygel.
*
* Rygel 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 of the License, or
* (at your option) any later version.
*
* Rygel 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.
*/
using Gee;
/**
* Manages all the configuration sources for Rygel.
*
* Abstracts Rygel and it's plugins from Configuration implementations. It keeps
* all real configuration sources in a list and returns the value provided by
* the first one. If none of them provides the value, it emits an error.
*/
public class Rygel.MetaConfig : GLib.Object, Configuration {
// Our singleton
private static MetaConfig meta_config;
private static ArrayList<Configuration> configs;
private void connect_signals (Configuration config) {
config.configuration_changed.connect (this.on_configuration_changed);
config.section_changed.connect (this.on_section_changed);
config.setting_changed.connect (this.on_setting_changed);
}
public static MetaConfig get_default () {
if (MetaConfig.configs == null) {
MetaConfig.configs = new ArrayList<Configuration> ();
}
if (meta_config == null) {
meta_config = new MetaConfig ();
foreach (var config in MetaConfig.configs) {
meta_config.connect_signals (config);
}
}
return meta_config;
}
public static void register_configuration (Configuration config) {
if (MetaConfig.configs == null) {
MetaConfig.configs = new ArrayList<Configuration> ();
}
configs.add (config);
if (meta_config != null) {
meta_config.connect_signals (config);
}
}
public bool get_upnp_enabled () throws GLib.Error {
bool val = true;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_upnp_enabled ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public string get_interface () throws GLib.Error {
string val = null;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_interface ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public int get_port () throws GLib.Error {
int val = 0;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_port ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public bool get_transcoding () throws GLib.Error {
bool val = true;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_transcoding ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public bool get_allow_upload () throws GLib.Error {
bool val = true;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_allow_upload ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public bool get_allow_deletion () throws GLib.Error {
bool val = true;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_allow_deletion ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public string get_log_levels () throws GLib.Error {
string val = null;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_log_levels ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET (_("No value available"));
}
return val;
}
public string get_plugin_path () throws GLib.Error {
string val = null;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_plugin_path ();
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET ("No value available");
}
return val;
}
public string get_video_upload_folder () throws GLib.Error {
unowned string default = Environment.get_user_special_dir
(UserDirectory.VIDEOS);
var value = default;
foreach (var config in MetaConfig.configs) {
try {
value = config.get_video_upload_folder ();
} catch (GLib.Error err) { }
}
return value.replace ("@VIDEOS@", default);
}
public string get_music_upload_folder () throws GLib.Error {
unowned string default = Environment.get_user_special_dir
(UserDirectory.MUSIC);
var value = default;
foreach (var config in MetaConfig.configs) {
try {
value = config.get_music_upload_folder ();
} catch (GLib.Error err) {};
}
return value.replace ("@MUSIC@", default);
}
public string get_picture_upload_folder () throws GLib.Error {
unowned string default = Environment.get_user_special_dir
(UserDirectory.PICTURES);
var value = default;
foreach (var config in MetaConfig.configs) {
try {
value = config.get_picture_upload_folder ();
} catch (GLib.Error err) {};
}
return value.replace ("@PICTURES@", default);
}
public bool get_enabled (string section) throws GLib.Error {
bool val = true;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_enabled (section);
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value set for '%s/enabled'"),
section);
}
return val;
}
public string get_title (string section) throws GLib.Error {
string val = null;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_title (section);
break;
} catch (GLib.Error err) {}
}
if (val == null) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value set for '%s/title'"),
section);
}
return val;
}
public string get_string (string section,
string key) throws GLib.Error {
string val = null;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_string (section, key);
break;
} catch (GLib.Error err) {}
}
if (val == null) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value available for '%s/%s'"),
section,
key);
}
return val;
}
public Gee.ArrayList<string> get_string_list (string section,
string key)
throws GLib.Error {
Gee.ArrayList<string> val = null;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_string_list (section, key);
break;
} catch (GLib.Error err) {}
}
if (val == null) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value available for '%s/%s'"),
section,
key);
}
return val;
}
public int get_int (string section,
string key,
int min,
int max)
throws GLib.Error {
int val = 0;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_int (section, key, min, max);
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value available for '%s/%s'"),
section,
key);
}
return val;
}
public Gee.ArrayList<int> get_int_list (string section,
string key)
throws GLib.Error {
Gee.ArrayList<int> val = null;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_int_list (section, key);
break;
} catch (GLib.Error err) {}
}
if (val == null) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value available for '%s/%s'"),
section,
key);
}
return val;
}
public bool get_bool (string section,
string key)
throws GLib.Error {
bool val = false;
bool unavailable = true;
foreach (var config in MetaConfig.configs) {
try {
val = config.get_bool (section, key);
unavailable = false;
break;
} catch (GLib.Error err) {}
}
if (unavailable) {
throw new ConfigurationError.NO_VALUE_SET
(_("No value available for '%s/%s'"),
section,
key);
}
return val;
}
private bool configuration_value_available (Configuration config,
ConfigurationEntry entry) {
try {
switch (entry) {
case ConfigurationEntry.UPNP_ENABLED:
config.get_upnp_enabled ();
break;
case ConfigurationEntry.INTERFACE:
config.get_interface ();
break;
case ConfigurationEntry.PORT:
config.get_port ();
break;
case ConfigurationEntry.TRANSCODING:
config.get_transcoding ();
break;
case ConfigurationEntry.ALLOW_UPLOAD:
config.get_allow_upload ();
break;
case ConfigurationEntry.ALLOW_DELETION:
config.get_allow_deletion ();
break;
case ConfigurationEntry.LOG_LEVELS:
config.get_log_levels ();
break;
case ConfigurationEntry.PLUGIN_PATH:
config.get_plugin_path ();
break;
case ConfigurationEntry.VIDEO_UPLOAD_FOLDER:
config.get_video_upload_folder ();
break;
case ConfigurationEntry.MUSIC_UPLOAD_FOLDER:
config.get_music_upload_folder ();
break;
case ConfigurationEntry.PICTURE_UPLOAD_FOLDER:
config.get_picture_upload_folder ();
break;
default:
assert_not_reached ();
}
} catch (GLib.Error e) {
return false;
}
return true;
}
private void on_configuration_changed (Configuration affected_config,
ConfigurationEntry entry) {
foreach (var config in MetaConfig.configs) {
if (config == affected_config) {
this.configuration_changed (entry);
} else {
if (configuration_value_available (config, entry)) {
return;
}
}
}
}
private bool setting_value_available (Configuration config,
string section,
SectionEntry entry) {
try {
switch (entry) {
case SectionEntry.TITLE:
config.get_title (section);
break;
case SectionEntry.ENABLED:
config.get_enabled (section);
break;
default:
assert_not_reached ();
}
} catch (GLib.Error e) {
return false;
}
return true;
}
private void on_section_changed (Configuration affected_config,
string section,
SectionEntry entry) {
foreach (var config in MetaConfig.configs) {
if (config == affected_config) {
this.section_changed (section, entry);
} else {
if (setting_value_available (config, section, entry)) {
return;
}
}
}
}
private void on_setting_changed (Configuration affected_config,
string section,
string key) {
// The section and key here is actually a catch-wrestling.
// We emit the setting changed straight away.
this.setting_changed (section, key);
}
}
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