mpdevil/bin/mpdevil

#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# mpdevil - MPD Client.
# Copyright 2020 Martin Wagner <martin.wagner.dev@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 3 of the License.
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA

import gi
gi.require_version("Gtk", "3.0")
gi.require_version("Notify", "0.7")
from gi.repository import Gtk, Gio, Gdk, GdkPixbuf, Pango, GObject, GLib, Notify
from mpd import MPDClient, base as MPDBase
import requests
from bs4 import BeautifulSoup
import threading
import locale
import gettext
gettext.textdomain("mpdevil")
_=gettext.gettext
import datetime
import os
import sys
import re

# MPRIS modules
import dbus
import dbus.service
from dbus.mainloop.glib import DBusGMainLoop
DBusGMainLoop(set_as_default=True)

VERSION="0.9.3-dev"  # sync with setup.py
COVER_REGEX=r"^\.?(album|cover|folder|front).*\.(gif|jpeg|jpg|png)$"


#########
# MPRIS #
#########

class MPRISInterface(dbus.service.Object):  # TODO emit Seeked if needed
	"""
	based on 'mpDris2' (master 19.03.2020) by Jean-Philippe Braun <eon@patapon.info>, Mantas Mikulėnas <grawity@gmail.com>
	"""
	def __init__(self, window, client, settings):
		super().__init__(dbus.SessionBus(), "/org/mpris/MediaPlayer2")
		self._name="org.mpris.MediaPlayer2.mpdevil"

		# adding vars
		self._window=window
		self._client=client
		self._settings=settings
		self._metadata={}
		self._bus=dbus.SessionBus()

		# start
		self._bus_name=dbus.service.BusName(self._name, bus=self._bus, allow_replacement=True, replace_existing=True)  # TODO

		# connect
		self._client.emitter.connect("state", self._on_state_changed)
		self._client.emitter.connect("current_song_changed", self._on_song_changed)
		self._client.emitter.connect("volume_changed", self._on_volume_changed)
		self._client.emitter.connect("repeat", self._on_loop_changed)
		self._client.emitter.connect("single", self._on_loop_changed)
		self._client.emitter.connect("random", self._on_random_changed)
		self._client.emitter.connect("connection_error", self._on_connection_error)
		self._client.emitter.connect("reconnected", self._on_reconnected)

	# Interfaces
	__prop_interface=dbus.PROPERTIES_IFACE
	__root_interface="org.mpris.MediaPlayer2"
	__root_props={
		"CanQuit": (False, None),
		"CanRaise": (True, None),
		"DesktopEntry": ("mpdevil", None),
		"HasTrackList": (False, None),
		"Identity": ("mpdevil", None),
		"SupportedUriSchemes": (dbus.Array(signature="s"), None),
		"SupportedMimeTypes": (dbus.Array(signature="s"), None)
	}

	def __get_playback_status(self):
		if self._client.connected():
			status=self._client.wrapped_call("status")
			return {"play": "Playing", "pause": "Paused", "stop": "Stopped"}[status["state"]]
		return "Stopped"

	def __set_loop_status(self, value):
		if self._client.connected():
			if value == "Playlist":
				self._client.wrapped_call("repeat", 1)
				self._client.wrapped_call("single", 0)
			elif value == "Track":
				self._client.wrapped_call("repeat", 1)
				self._client.wrapped_call("single", 1)
			elif value == "None":
				self._client.wrapped_call("repeat", 0)
				self._client.wrapped_call("single", 0)
			else:
				raise dbus.exceptions.DBusException("Loop mode '{}' not supported".format(value))
		return

	def __get_loop_status(self):
		if self._client.connected():
			status=self._client.wrapped_call("status")
			if int(status["repeat"]) == 1:
				if int(status.get("single", 0)) == 1:
					return "Track"
				else:
					return "Playlist"
			else:
				return "None"
		return "None"

	def __set_shuffle(self, value):
		if self._client.connected():
			self._client.wrapped_call("random", value)
		return

	def __get_shuffle(self):
		if self._client.connected():
			if int(self._client.wrapped_call("status")["random"]) == 1:
				return True
			else:
				return False
		return False

	def __get_metadata(self):
		return dbus.Dictionary(self._metadata, signature="sv")

	def __get_volume(self):
		if self._client.connected():
			return float(self._client.wrapped_call("status").get("volume", 0))/100
		return 0.0

	def __set_volume(self, value):
		if self._client.connected():
			if value >= 0 and value <= 1:
				self._client.wrapped_call("setvol", int(value * 100))
		return

	def __get_position(self):
		if self._client.connected():
			status=self._client.wrapped_call("status")
			return dbus.Int64(float(status.get("elapsed", 0))*1000000)
		return dbus.Int64(0)

	def __get_can_next_prev(self):
		if self._client.connected():
			status=self._client.wrapped_call("status")
			if status["state"] == "stop":
				return False
			else:
				return True
		return False

	def __get_can_play_pause_seek(self):
		return self._client.connected()

	__player_interface="org.mpris.MediaPlayer2.Player"
	__player_props={
		"PlaybackStatus": (__get_playback_status, None),
		"LoopStatus": (__get_loop_status, __set_loop_status),
		"Rate": (1.0, None),
		"Shuffle": (__get_shuffle, __set_shuffle),
		"Metadata": (__get_metadata, None),
		"Volume": (__get_volume, __set_volume),
		"Position": (__get_position, None),
		"MinimumRate": (1.0, None),
		"MaximumRate": (1.0, None),
		"CanGoNext": (__get_can_next_prev, None),
		"CanGoPrevious": (__get_can_next_prev, None),
		"CanPlay": (__get_can_play_pause_seek, None),
		"CanPause": (__get_can_play_pause_seek, None),
		"CanSeek": (__get_can_play_pause_seek, None),
		"CanControl": (True, None),
	}
	__prop_mapping={
		__player_interface: __player_props,
		__root_interface: __root_props,
	}

	# Prop methods
	@dbus.service.signal(__prop_interface, signature="sa{sv}as")
	def PropertiesChanged(self, interface, changed_properties, invalidated_properties):
		pass

	@dbus.service.method(__prop_interface, in_signature="ss", out_signature="v")
	def Get(self, interface, prop):
		getter, setter=self.__prop_mapping[interface][prop]
		if callable(getter):
			return getter(self)
		return getter

	@dbus.service.method(__prop_interface, in_signature="ssv", out_signature="")
	def Set(self, interface, prop, value):
		getter, setter=self.__prop_mapping[interface][prop]
		if setter is not None:
			setter(self, value)

	@dbus.service.method(__prop_interface, in_signature="s", out_signature="a{sv}")
	def GetAll(self, interface):
		read_props={}
		props=self.__prop_mapping[interface]
		for key, (getter, setter) in props.items():
			if callable(getter):
				getter=getter(self)
			read_props[key]=getter
		return read_props

	# Root methods
	@dbus.service.method(__root_interface, in_signature="", out_signature="")
	def Raise(self):
		self._window.present()
		return

	@dbus.service.method(__root_interface, in_signature="", out_signature="")
	def Quit(self):
		return

	# Player methods
	@dbus.service.signal(__player_interface, signature="x")
	def Seeked(self, position):
		return float(position)

	@dbus.service.method(__player_interface, in_signature="", out_signature="")
	def Next(self):
		self._client.wrapped_call("next")
		return

	@dbus.service.method(__player_interface, in_signature="", out_signature="")
	def Previous(self):
		self._client.wrapped_call("previous")
		return

	@dbus.service.method(__player_interface, in_signature="", out_signature="")
	def Pause(self):
		self._client.wrapped_call("pause", 1)
		return

	@dbus.service.method(__player_interface, in_signature="", out_signature="")
	def PlayPause(self):
		status=self._client.wrapped_call("status")
		if status["state"] == "play":
			self._client.wrapped_call("pause", 1)
		else:
			self._client.wrapped_call("play")
		return

	@dbus.service.method(__player_interface, in_signature="", out_signature="")
	def Stop(self):
		self._client.wrapped_call("stop")
		return

	@dbus.service.method(__player_interface, in_signature="", out_signature="")
	def Play(self):
		self._client.wrapped_call("play")
		return

	@dbus.service.method(__player_interface, in_signature="x", out_signature="")
	def Seek(self, offset):
		if offset > 0:
			offset="+"+str(offset/1000000)
		else:
			offset=str(offset/1000000)
		self._client.wrapped_call("seekcur", offset)
		return

	@dbus.service.method(__player_interface, in_signature="ox", out_signature="")
	def SetPosition(self, trackid, position):
		song=self._client.wrapped_call("currentsong")
		if str(trackid).split("/")[-1] != song["id"]:
			return
		mpd_pos=position/1000000
		if mpd_pos >= 0 and mpd_pos <= float(song["duration"]):
			self._client.wrapped_call("seekcur", str(mpd_pos))
		return

	@dbus.service.method(__player_interface, in_signature="s", out_signature="")
	def OpenUri(self, uri):
		return

	# MPRIS implemented metadata tags (all: http://www.freedesktop.org/wiki/Specifications/mpris-spec/metadata)
	implemented_tags={
		"mpris:trackid": dbus.ObjectPath,
		"mpris:length": dbus.Int64,
		"mpris:artUrl": str,
		"xesam:album": str,
		"xesam:albumArtist": list,
		"xesam:artist": list,
		"xesam:composer": list,
		"xesam:contentCreated": str,
		"xesam:discNumber": int,
		"xesam:genre": list,
		"xesam:title": str,
		"xesam:trackNumber": int,
		"xesam:url": str,
	}

	def _update_metadata(self):
		"""
		Translate metadata returned by MPD to the MPRIS v2 syntax.
		http://www.freedesktop.org/wiki/Specifications/mpris-spec/metadata
		"""
		mpd_meta=self._client.wrapped_call("currentsong")
		self._metadata={}
		for tag, xesam_tag in (("album","album"),("title","title"),("track","trackNumber"),("disc","discNumber"),("date","contentCreated")):
			if tag in mpd_meta:
				self._metadata["xesam:{}".format(xesam_tag)]=mpd_meta[tag]
		for tag, xesam_tag in (("albumartist","albumArtist"),("artist","artist"),("composer","composer"),("genre","genre")):
			if tag in mpd_meta:
				if type(mpd_meta[tag]) == list:
					self._metadata["xesam:{}".format(xesam_tag)]=mpd_meta[tag]
				else:
					self._metadata["xesam:{}".format(xesam_tag)]=[mpd_meta[tag]]
		if "id" in mpd_meta:
			self._metadata["mpris:trackid"]="/org/mpris/MediaPlayer2/Track/{}".format(mpd_meta["id"])
		if "time" in mpd_meta:
			self._metadata["mpris:length"]=float(mpd_meta["duration"]) * 1000000
		if "file" in mpd_meta:
			song_file=mpd_meta["file"]
			lib_path=self._settings.get_value("paths")[self._settings.get_int("active-profile")]
			self._metadata["xesam:url"]="file://{}".format(os.path.join(lib_path, song_file))
			cover=Cover(self._settings, mpd_meta)
			if cover.path is not None:
				self._metadata["mpris:artUrl"]="file://{}".format(cover.path)
		# Cast self._metadata to the correct type, or discard it
		for key, value in self._metadata.items():
			try:
				self._metadata[key]=self.implemented_tags[key](value)
			except ValueError:
				del self._metadata[key]

	def _update_property(self, interface, prop):
		getter, setter=self.__prop_mapping[interface][prop]
		if callable(getter):
			value=getter(self)
		else:
			value=getter
		self.PropertiesChanged(interface, {prop: value}, [])
		return value

	def _on_state_changed(self, *args):
		self._update_property("org.mpris.MediaPlayer2.Player", "PlaybackStatus")
		self._update_property("org.mpris.MediaPlayer2.Player", "CanGoNext")
		self._update_property("org.mpris.MediaPlayer2.Player", "CanGoPrevious")

	def _on_song_changed(self, *args):
		self._update_metadata()
		self._update_property("org.mpris.MediaPlayer2.Player", "Metadata")

	def _on_volume_changed(self, *args):
		self._update_property("org.mpris.MediaPlayer2.Player", "Volume")

	def _on_loop_changed(self, *args):
		self._update_property("org.mpris.MediaPlayer2.Player", "LoopStatus")

	def _on_random_changed(self, *args):
		self._update_property("org.mpris.MediaPlayer2.Player", "Shuffle")

	def _on_reconnected(self, *args):
		properties=("CanPlay","CanPause","CanSeek")
		for p in properties:
			self._update_property("org.mpris.MediaPlayer2.Player", p)

	def _on_connection_error(self, *args):
		self._metadata={}
		properties=("PlaybackStatus","CanGoNext","CanGoPrevious","Metadata","Volume","LoopStatus","Shuffle","CanPlay","CanPause","CanSeek")
		for p in properties:
			self._update_property("org.mpris.MediaPlayer2.Player", p)

######################
# MPD client wrapper #
######################

class ClientHelper():
	def seconds_to_display_time(seconds):
		raw_time_string=str(datetime.timedelta(seconds=seconds))
		stript_time_string=raw_time_string.lstrip("0").lstrip(":")
		return stript_time_string.replace(":", "∶")  # use 'ratio' as delimiter

	def song_to_str_dict(song):  # converts tags with multiple values to comma separated strings
		return_song=song
		for tag, value in return_song.items():
			if type(value) == list:
				return_song[tag]=(", ".join(value))
		return return_song

	def song_to_first_str_dict(song):  # extracts the first value of multiple value tags
		return_song=song
		for tag, value in return_song.items():
			if type(value) == list:
				return_song[tag]=value[0]
		return return_song

	def extend_song_for_display(song):
		base_song={
			"title": _("Unknown Title"),
			"track": "",
			"disc": "",
			"artist": "",
			"album": "",
			"duration": "0.0",
			"date": "",
			"genre": ""
		}
		base_song.update(song)
		base_song["human_duration"]=ClientHelper.seconds_to_display_time(int(float(base_song["duration"])))
		return base_song

	def calc_display_length(songs):
		length=float(0)
		for song in songs:
			length=length+float(song.get("duration", 0.0))
		return ClientHelper.seconds_to_display_time(int(length))

class MpdEventEmitter(GObject.Object):
	__gsignals__={
		"update": (GObject.SignalFlags.RUN_FIRST, None, ()),
		"disconnected": (GObject.SignalFlags.RUN_FIRST, None, ()),
		"reconnected": (GObject.SignalFlags.RUN_FIRST, None, ()),
		"connection_error": (GObject.SignalFlags.RUN_FIRST, None, ()),
		"current_song_changed": (GObject.SignalFlags.RUN_FIRST, None, ()),
		"state": (GObject.SignalFlags.RUN_FIRST, None, (str,)),
		"elapsed_changed": (GObject.SignalFlags.RUN_FIRST, None, (float,float,)),
		"volume_changed": (GObject.SignalFlags.RUN_FIRST, None, (float,)),
		"playlist_changed": (GObject.SignalFlags.RUN_FIRST, None, (int,)),
		"repeat": (GObject.SignalFlags.RUN_FIRST, None, (bool,)),
		"random": (GObject.SignalFlags.RUN_FIRST, None, (bool,)),
		"single": (GObject.SignalFlags.RUN_FIRST, None, (bool,)),
		"consume": (GObject.SignalFlags.RUN_FIRST, None, (bool,)),
		"audio": (GObject.SignalFlags.RUN_FIRST, None, (str,str,str,)),
		"bitrate": (GObject.SignalFlags.RUN_FIRST, None, (float,))
	}

	def __init__(self):
		super().__init__()

class Client(MPDClient):
	def __init__(self, settings):
		super().__init__()

		# adding vars
		self._settings=settings
		self.emitter=MpdEventEmitter()
		self._last_status={}
		self._refresh_interval=self._settings.get_int("refresh-interval")
		self._main_timeout_id=None

		#connect
		self._settings.connect("changed::active-profile", self._on_active_profile_changed)

	def wrapped_call(self, name, *args):
		try:
			func=getattr(self, name)
		except:
			raise ValueError
		return func(*args)

	def start(self):
		self.emitter.emit("disconnected")  # bring player in defined state
		active=self._settings.get_int("active-profile")
		try:
			self.connect(self._settings.get_value("hosts")[active], self._settings.get_value("ports")[active])
			if self._settings.get_value("passwords")[active] != "":
				self.password(self._settings.get_value("passwords")[active])
		except:
			self.emitter.emit("connection_error")
			return False
		# connect successful
		self._main_timeout_id=GLib.timeout_add(self._refresh_interval, self._main_loop)
		self.emitter.emit("reconnected")
		return True

	def reconnect(self):
		if self._main_timeout_id is not None:
			GLib.source_remove(self._main_timeout_id)
			self._main_timeout_id=None
		self._last_status={}
		self.disconnect()
		self.start()

	def connected(self):
		try:
			self.wrapped_call("ping")
			return True
		except:
			return False

	def files_to_playlist(self, files, mode="default"):  # modes: default, play, append, enqueue
		def append(files):
			for f in files:
				self.add(f)
		def play(files):
			if files != []:
				self.clear()
				for f in files:
					self.add(f)
				self.play()
		def enqueue(files):
			status=self.status()
			if status["state"] == "stop":
				play(files)
			else:
				self.moveid(status["songid"], 0)
				current_song_file=self.playlistinfo()[0]["file"]
				try:
					self.delete((1,))  # delete all songs, but the first. bad song index possible
				except:
					pass
				for f in files:
					if f == current_song_file:
						self.move(0, (len(self.playlistinfo())-1))
					else:
						self.add(f)
		if mode == "append":
			append(files)
		elif mode == "enqueue":
			enqueue(files)
		elif mode == "play":
			play(files)
		elif mode == "default":
			if self._settings.get_boolean("force-mode"):
				play(files)
			else:
				enqueue(files)

	def album_to_playlist(self, album, artist, year, mode="default"):
		songs=self.find("album", album, "date", year, self._settings.get_artist_type(), artist)
		self.files_to_playlist([song["file"] for song in songs], mode)

	def comp_list(self, *args):  # simulates listing behavior of python-mpd2 1.0
		native_list=self.list(*args)
		if len(native_list) > 0:
			if type(native_list[0]) == dict:
				return ([l[args[0]] for l in native_list])
			else:
				return native_list
		else:
			return([])

	def get_metadata(self, uri):
		meta_base=self.lsinfo(uri)[0]
		meta_extra=self.readcomments(uri)  # contains comment tag
		meta_base.update(meta_extra)
		return meta_base

	def toggle_play(self):
		status=self.status()
		if status["state"] == "play":
			self.pause(1)
		elif status["state"] == "pause":
			self.pause(0)
		else:
			try:
				self.play()
			except:
				pass

	def toggle_option(self, option):  # repeat, random, single, consume
		new_state=(int(self.status()[option])+1)%2  # toggle 0,1
		func=getattr(self, option)
		func(new_state)

	def _main_loop(self, *args):
		try:
			status=self.status()
			diff=set(status.items())-set(self._last_status.items())
			for key, val in diff:
				if key == "elapsed":
					self.emitter.emit("elapsed_changed", float(val), float(status["duration"]))
				elif key == "bitrate":
					self.emitter.emit("bitrate", float(val))
				elif key == "songid":
					self.emitter.emit("current_song_changed")
				elif key == "state":
					self.emitter.emit("state", val)
				elif key == "audio":
					# see: https://www.musicpd.org/doc/html/user.html#audio-output-format
					samplerate, bits, channels=val.split(":")
					if bits == "f":
						bits="32fp"
					self.emitter.emit("audio", samplerate, bits, channels)
				elif key == "volume":
					self.emitter.emit("volume_changed", float(val))
				elif key == "playlist":
					self.emitter.emit("playlist_changed", int(val))
				elif key in ["repeat", "random", "single", "consume"]:
					if val == "1":
						self.emitter.emit(key, True)
					else:
						self.emitter.emit(key, False)
			diff=set(self._last_status)-set(status)
			if "songid" in diff:
				self.emitter.emit("current_song_changed")
			if "volume" in diff:
				self.emitter.emit("volume_changed", -1)
			if "updating_db" in diff:
				self.emitter.emit("update")
			self._last_status=status
		except (MPDBase.ConnectionError, ConnectionResetError) as e:
			self.disconnect()
			self._last_status={}
			self.emitter.emit("disconnected")
			self.emitter.emit("connection_error")
			self._main_timeout_id=None
			return False
		return True

	def _on_active_profile_changed(self, *args):
		self.reconnect()

########################
# gio settings wrapper #
########################

class Settings(Gio.Settings):
	BASE_KEY="org.mpdevil"
	# temp settings
	mini_player=GObject.Property(type=bool, default=False)
	def __init__(self):
		super().__init__(schema=self.BASE_KEY)

		# fix profile settings
		if len(self.get_value("profiles")) < (self.get_int("active-profile")+1):
			self.set_int("active-profile", 0)
		profile_keys=[
			("as", "profiles", "new profile"),
			("as", "hosts", "localhost"),
			("ai", "ports", 6600),
			("as", "passwords", ""),
			("as", "paths", ""),
			("as", "regex", "")
		]
		profile_arrays=[]
		for vtype, key, default in profile_keys:
			profile_arrays.append(self.get_value(key).unpack())
		max_len=max(len(x) for x in profile_arrays)
		for index, (vtype, key, default) in enumerate(profile_keys):
			profile_arrays[index]=(profile_arrays[index]+max_len*[default])[:max_len]
			self.set_value(key, GLib.Variant(vtype, profile_arrays[index]))

	def array_append(self, vtype, key, value):  # append to Gio.Settings (self._settings) array
		array=self.get_value(key).unpack()
		array.append(value)
		self.set_value(key, GLib.Variant(vtype, array))

	def array_delete(self, vtype, key, pos):  # delete entry of Gio.Settings (self._settings) array
		array=self.get_value(key).unpack()
		array.pop(pos)
		self.set_value(key, GLib.Variant(vtype, array))

	def array_modify(self, vtype, key, pos, value):  # modify entry of Gio.Settings (self._settings) array
		array=self.get_value(key).unpack()
		array[pos]=value
		self.set_value(key, GLib.Variant(vtype, array))

	def get_gtk_icon_size(self, key):
		icon_size=self.get_int(key)
		sizes=[(48, Gtk.IconSize.DIALOG), (32, Gtk.IconSize.DND), (24, Gtk.IconSize.LARGE_TOOLBAR), (16, Gtk.IconSize.BUTTON)]
		for pixel_size, gtk_size in sizes:
			if icon_size >= pixel_size:
				return gtk_size
		return Gtk.IconSize.INVALID

	def get_artist_type(self):
		if self.get_boolean("use-album-artist"):
			return ("albumartist")
		else:
			return ("artist")

###################
# settings dialog #
###################

class GeneralSettings(Gtk.Box):
	def __init__(self, settings):
		super().__init__(orientation=Gtk.Orientation.VERTICAL, spacing=6, border_width=18)

		# adding vars
		self._settings=settings
		self._settings_handlers=[]

		# int_settings
		int_settings={}
		int_settings_data=[
			(_("Main cover size:"), (100, 1200, 10), "track-cover"),
			(_("Album view cover size:"), (50, 600, 10), "album-cover"),
			(_("Action bar icon size:"), (16, 64, 2), "icon-size"),
			(_("Secondary icon size:"), (16, 64, 2), "icon-size-sec")
		]
		for label, (vmin, vmax, step), key in int_settings_data:
			int_settings[key]=(Gtk.Label(label=label, xalign=0), Gtk.SpinButton.new_with_range(vmin, vmax, step))
			int_settings[key][1].set_value(self._settings.get_int(key))
			int_settings[key][1].connect("value-changed", self._on_int_changed, key)
			self._settings_handlers.append(
				self._settings.connect("changed::{}".format(key), self._on_int_settings_changed, int_settings[key][1])
			)

		# combo_settings
		combo_settings={}
		combo_settings_data=[
			(_("Sort albums by:"), _("name"), _("year"), "sort-albums-by-year"),
			(_("Position of playlist:"), _("bottom"), _("right"), "playlist-right")
		]
		for label, vfalse, vtrue, key in combo_settings_data:
			combo_settings[key]=(Gtk.Label(label=label, xalign=0), Gtk.ComboBoxText(entry_text_column=0))
			combo_settings[key][1].append_text(vfalse)
			combo_settings[key][1].append_text(vtrue)
			if self._settings.get_boolean(key):
				combo_settings[key][1].set_active(1)
			else:
				combo_settings[key][1].set_active(0)
			combo_settings[key][1].connect("changed", self._on_combo_changed, key)
			self._settings_handlers.append(
				self._settings.connect("changed::{}".format(key), self._on_combo_settings_changed, combo_settings[key][1])
			)

		# check buttons
		check_buttons={}
		check_buttons_data=[
			(_("Use Client-side decoration"), "use-csd"),
			(_("Show stop button"), "show-stop"),
			(_("Show lyrics button"), "show-lyrics-button"),
			(_("Show initials in artist view"), "show-initials"),
			(_("Show tooltips in album view"), "show-album-view-tooltips"),
			(_("Use “Album Artist” tag"), "use-album-artist"),
			(_("Send notification on title change"), "send-notify"),
			(_("Stop playback on quit"), "stop-on-quit"),
			(_("Play selected albums and titles immediately"), "force-mode")
		]

		for label, key in check_buttons_data:
			check_buttons[key]=Gtk.CheckButton(label=label)
			check_buttons[key].set_active(self._settings.get_boolean(key))
			check_buttons[key].set_margin_start(12)
			check_buttons[key].connect("toggled", self._on_toggled, key)
			self._settings_handlers.append(
				self._settings.connect("changed::{}".format(key), self._on_check_settings_changed, check_buttons[key])
			)

		# headings
		view_heading=Gtk.Label(label=_("<b>View</b>"), use_markup=True, xalign=0)
		behavior_heading=Gtk.Label(label=_("<b>Behavior</b>"), use_markup=True, xalign=0)

		# view grid
		view_grid=Gtk.Grid(row_spacing=6, column_spacing=12)
		view_grid.set_margin_start(12)
		view_grid.add(int_settings["track-cover"][0])
		view_grid.attach_next_to(int_settings["album-cover"][0], int_settings["track-cover"][0], Gtk.PositionType.BOTTOM, 1, 1)
		view_grid.attach_next_to(int_settings["icon-size"][0], int_settings["album-cover"][0], Gtk.PositionType.BOTTOM, 1, 1)
		view_grid.attach_next_to(int_settings["icon-size-sec"][0], int_settings["icon-size"][0], Gtk.PositionType.BOTTOM, 1, 1)
		view_grid.attach_next_to(combo_settings["playlist-right"][0], int_settings["icon-size-sec"][0], Gtk.PositionType.BOTTOM, 1, 1)
		view_grid.attach_next_to(int_settings["track-cover"][1], int_settings["track-cover"][0], Gtk.PositionType.RIGHT, 1, 1)
		view_grid.attach_next_to(int_settings["album-cover"][1], int_settings["album-cover"][0], Gtk.PositionType.RIGHT, 1, 1)
		view_grid.attach_next_to(int_settings["icon-size"][1], int_settings["icon-size"][0], Gtk.PositionType.RIGHT, 1, 1)
		view_grid.attach_next_to(int_settings["icon-size-sec"][1], int_settings["icon-size-sec"][0], Gtk.PositionType.RIGHT, 1, 1)
		view_grid.attach_next_to(combo_settings["playlist-right"][1], combo_settings["playlist-right"][0], Gtk.PositionType.RIGHT, 1, 1)

		# behavior grid
		behavior_grid=Gtk.Grid(row_spacing=6, column_spacing=12)
		behavior_grid.set_margin_start(12)
		behavior_grid.add(combo_settings["sort-albums-by-year"][0])
		behavior_grid.attach_next_to(
			combo_settings["sort-albums-by-year"][1],
			combo_settings["sort-albums-by-year"][0],
			Gtk.PositionType.RIGHT, 1, 1
		)

		# connect
		self.connect("destroy", self._remove_handlers)

		# packing
		box=Gtk.Box(spacing=12)
		box.pack_start(check_buttons["use-csd"], False, False, 0)
		box.pack_start(Gtk.Label(label=_("(restart required)"), sensitive=False), False, False, 0)
		self.pack_start(view_heading, False, False, 0)
		self.pack_start(box, False, False, 0)
		self.pack_start(check_buttons["show-stop"], False, False, 0)
		self.pack_start(check_buttons["show-lyrics-button"], False, False, 0)
		self.pack_start(check_buttons["show-initials"], False, False, 0)
		self.pack_start(check_buttons["show-album-view-tooltips"], False, False, 0)
		self.pack_start(view_grid, False, False, 0)
		self.pack_start(behavior_heading, False, False, 0)
		self.pack_start(check_buttons["use-album-artist"], False, False, 0)
		self.pack_start(check_buttons["send-notify"], False, False, 0)
		self.pack_start(check_buttons["stop-on-quit"], False, False, 0)
		self.pack_start(check_buttons["force-mode"], False, False, 0)
		self.pack_start(behavior_grid, False, False, 0)

	def _remove_handlers(self, *args):
		for handler in self._settings_handlers:
			self._settings.disconnect(handler)

	def _on_int_settings_changed(self, settings, key, entry):
		entry.set_value(settings.get_int(key))

	def _on_combo_settings_changed(self, settings, key, combo):
		if settings.get_boolean(key):
			combo.set_active(1)
		else:
			combo.set_active(0)

	def _on_check_settings_changed(self, settings, key, button):
		button.set_active(settings.get_boolean(key))

	def _on_int_changed(self, widget, key):
		self._settings.set_int(key, int(widget.get_value()))

	def _on_combo_changed(self, box, key):
		active=box.get_active()
		if active == 0:
			self._settings.set_boolean(key, False)
		else:
			self._settings.set_boolean(key, True)

	def _on_toggled(self, widget, key):
		self._settings.set_boolean(key, widget.get_active())

class ProfileSettings(Gtk.Grid):
	def __init__(self, parent, client, settings):
		super().__init__(row_spacing=6, column_spacing=12, border_width=18)

		# adding vars
		self._client=client
		self._settings=settings
		self._gui_modification=False  # indicates whether the settings were changed from the settings dialog

		# widgets
		self._profiles_combo=Gtk.ComboBoxText(entry_text_column=0, hexpand=True)

		add_button=Gtk.Button(image=Gtk.Image.new_from_icon_name("list-add", Gtk.IconSize.BUTTON))
		delete_button=Gtk.Button(image=Gtk.Image.new_from_icon_name("list-remove", Gtk.IconSize.BUTTON))
		add_delete_buttons=Gtk.ButtonBox(layout_style=Gtk.ButtonBoxStyle.EXPAND)
		add_delete_buttons.pack_start(add_button, True, True, 0)
		add_delete_buttons.pack_start(delete_button, True, True, 0)

		connect_button=Gtk.Button(label=_("Connect"), image=Gtk.Image.new_from_icon_name("system-run", Gtk.IconSize.BUTTON))

		self._profile_entry=Gtk.Entry(hexpand=True)
		self._host_entry=Gtk.Entry(hexpand=True)
		self._port_entry=Gtk.SpinButton.new_with_range(0, 65535, 1)
		address_entry=Gtk.Box(spacing=6)
		address_entry.pack_start(self._host_entry, True, True, 0)
		address_entry.pack_start(self._port_entry, False, False, 0)
		self._password_entry=Gtk.Entry(hexpand=True, visibility=False)
		self._path_entry=Gtk.Entry(hexpand=True)
		self._path_select_button=Gtk.Button(image=Gtk.Image.new_from_icon_name("folder-open", Gtk.IconSize.BUTTON))
		path_box=Gtk.Box(spacing=6)
		path_box.pack_start(self._path_entry, True, True, 0)
		path_box.pack_start(self._path_select_button, False, False, 0)
		self._regex_entry=Gtk.Entry(hexpand=True, placeholder_text=COVER_REGEX)
		self._regex_entry.set_tooltip_text(
			_("The first image in the same directory as the song file "\
			"matching this regex will be displayed. %AlbumArtist% and "\
			"%Album% will be replaced by the corresponding tags of the song.")
		)

		profiles_label=Gtk.Label(label=_("Profile:"), xalign=1)
		profile_label=Gtk.Label(label=_("Name:"), xalign=1)
		host_label=Gtk.Label(label=_("Host:"), xalign=1)
		password_label=Gtk.Label(label=_("Password:"), xalign=1)
		path_label=Gtk.Label(label=_("Music lib:"), xalign=1)
		regex_label=Gtk.Label(label=_("Cover regex:"), xalign=1)

		# connect
		add_button.connect("clicked", self._on_add_button_clicked)
		delete_button.connect("clicked", self._on_delete_button_clicked)
		connect_button.connect("clicked", self._on_connect_button_clicked)
		self._path_select_button.connect("clicked", self._on_path_select_button_clicked, parent)
		self._profiles_combo.connect("changed", self._on_profiles_changed)
		self.entry_changed_handlers=[]
		self.entry_changed_handlers.append((self._profile_entry, self._profile_entry.connect("changed", self._on_profile_entry_changed)))
		self.entry_changed_handlers.append((self._host_entry, self._host_entry.connect("changed", self._on_host_entry_changed)))
		self.entry_changed_handlers.append((self._port_entry, self._port_entry.connect("value-changed", self._on_port_entry_changed)))
		self.entry_changed_handlers.append((self._password_entry, self._password_entry.connect("changed", self._on_password_entry_changed)))
		self.entry_changed_handlers.append((self._path_entry, self._path_entry.connect("changed", self._on_path_entry_changed)))
		self.entry_changed_handlers.append((self._regex_entry, self._regex_entry.connect("changed", self._on_regex_entry_changed)))
		self._settings_handlers=[]
		self._settings_handlers.append(self._settings.connect("changed::profiles", self._on_settings_changed))
		self._settings_handlers.append(self._settings.connect("changed::hosts", self._on_settings_changed))
		self._settings_handlers.append(self._settings.connect("changed::ports", self._on_settings_changed))
		self._settings_handlers.append(self._settings.connect("changed::passwords", self._on_settings_changed))
		self._settings_handlers.append(self._settings.connect("changed::paths", self._on_settings_changed))
		self._settings_handlers.append(self._settings.connect("changed::regex", self._on_settings_changed))
		self.connect("destroy", self._remove_handlers)

		self._profiles_combo_reload()
		self._profiles_combo.set_active(0)

		# packing
		self.add(profiles_label)
		self.attach_next_to(profile_label, profiles_label, Gtk.PositionType.BOTTOM, 1, 1)
		self.attach_next_to(host_label, profile_label, Gtk.PositionType.BOTTOM, 1, 1)
		self.attach_next_to(password_label, host_label, Gtk.PositionType.BOTTOM, 1, 1)
		self.attach_next_to(path_label, password_label, Gtk.PositionType.BOTTOM, 1, 1)
		self.attach_next_to(regex_label, path_label, Gtk.PositionType.BOTTOM, 1, 1)
		self.attach_next_to(self._profiles_combo, profiles_label, Gtk.PositionType.RIGHT, 2, 1)
		self.attach_next_to(add_delete_buttons, self._profiles_combo, Gtk.PositionType.RIGHT, 1, 1)
		self.attach_next_to(self._profile_entry, profile_label, Gtk.PositionType.RIGHT, 2, 1)
		self.attach_next_to(address_entry, host_label, Gtk.PositionType.RIGHT, 2, 1)
		self.attach_next_to(self._password_entry, password_label, Gtk.PositionType.RIGHT, 2, 1)
		self.attach_next_to(path_box, path_label, Gtk.PositionType.RIGHT, 2, 1)
		self.attach_next_to(self._regex_entry, regex_label, Gtk.PositionType.RIGHT, 2, 1)
		connect_button.set_margin_top(12)
		self.attach_next_to(connect_button, self._regex_entry, Gtk.PositionType.BOTTOM, 2, 1)

	def _block_entry_changed_handlers(self, *args):
		for obj, handler in self.entry_changed_handlers:
			obj.handler_block(handler)

	def _unblock_entry_changed_handlers(self, *args):
		for obj, handler in self.entry_changed_handlers:
			obj.handler_unblock(handler)

	def _profiles_combo_reload(self, *args):
		self._block_entry_changed_handlers()

		self._profiles_combo.remove_all()
		for profile in self._settings.get_value("profiles"):
			self._profiles_combo.append_text(profile)

		self._unblock_entry_changed_handlers()

	def _remove_handlers(self, *args):
		for handler in self._settings_handlers:
			self._settings.disconnect(handler)

	def _on_settings_changed(self, *args):
		if self._gui_modification:
			self._gui_modification=False
		else:
			self._profiles_combo_reload()
			self._profiles_combo.set_active(0)

	def _on_add_button_clicked(self, *args):
		model=self._profiles_combo.get_model()
		self._settings.array_append("as", "profiles", "new profile ({})".format(len(model)))
		self._settings.array_append("as", "hosts", "localhost")
		self._settings.array_append("ai", "ports", 6600)
		self._settings.array_append("as", "passwords", "")
		self._settings.array_append("as", "paths", "")
		self._settings.array_append("as", "regex", "")
		self._profiles_combo_reload()
		new_pos=len(model)-1
		self._profiles_combo.set_active(new_pos)

	def _on_delete_button_clicked(self, *args):
		pos=self._profiles_combo.get_active()
		self._settings.array_delete("as", "profiles", pos)
		self._settings.array_delete("as", "hosts", pos)
		self._settings.array_delete("ai", "ports", pos)
		self._settings.array_delete("as", "passwords", pos)
		self._settings.array_delete("as", "paths", pos)
		self._settings.array_delete("as", "regex", pos)
		if len(self._settings.get_value("profiles")) == 0:
			self._on_add_button_clicked()
		else:
			self._profiles_combo_reload()
			new_pos=max(pos-1,0)
			self._profiles_combo.set_active(new_pos)

	def _on_connect_button_clicked(self, *args):
		self._settings.set_int("active-profile", self._profiles_combo.get_active())
		self._client.reconnect()

	def _on_profile_entry_changed(self, *args):
		self._gui_modification=True
		pos=self._profiles_combo.get_active()
		self._settings.array_modify("as", "profiles", pos, self._profile_entry.get_text())
		self._profiles_combo_reload()
		self._profiles_combo.set_active(pos)

	def _on_host_entry_changed(self, *args):
		self._gui_modification=True
		self._settings.array_modify("as", "hosts", self._profiles_combo.get_active(), self._host_entry.get_text())

	def _on_port_entry_changed(self, *args):
		self._gui_modification=True
		self._settings.array_modify("ai", "ports", self._profiles_combo.get_active(), int(self._port_entry.get_value()))

	def _on_password_entry_changed(self, *args):
		self._gui_modification=True
		self._settings.array_modify("as", "passwords", self._profiles_combo.get_active(), self._password_entry.get_text())

	def _on_path_entry_changed(self, *args):
		self._gui_modification=True
		self._settings.array_modify("as", "paths", self._profiles_combo.get_active(), self._path_entry.get_text())

	def _on_regex_entry_changed(self, *args):
		self._gui_modification=True
		self._settings.array_modify("as", "regex", self._profiles_combo.get_active(), self._regex_entry.get_text())

	def _on_path_select_button_clicked(self, widget, parent):
		dialog=Gtk.FileChooserDialog(title=_("Choose directory"), transient_for=parent, action=Gtk.FileChooserAction.SELECT_FOLDER)
		dialog.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
		dialog.add_buttons(Gtk.STOCK_OK, Gtk.ResponseType.OK)
		dialog.set_default_size(800, 400)
		dialog.set_current_folder(self._settings.get_value("paths")[self._profiles_combo.get_active()])
		response=dialog.run()
		if response == Gtk.ResponseType.OK:
			self._gui_modification=True
			self._settings.array_modify("as", "paths", self._profiles_combo.get_active(), dialog.get_filename())
			self._path_entry.set_text(dialog.get_filename())
		dialog.destroy()

	def _on_profiles_changed(self, *args):
		active=self._profiles_combo.get_active()
		self._block_entry_changed_handlers()

		self._profile_entry.set_text(self._settings.get_value("profiles")[active])
		self._host_entry.set_text(self._settings.get_value("hosts")[active])
		self._port_entry.set_value(self._settings.get_value("ports")[active])
		self._password_entry.set_text(self._settings.get_value("passwords")[active])
		self._path_entry.set_text(self._settings.get_value("paths")[active])
		self._regex_entry.set_text(self._settings.get_value("regex")[active])

		self._unblock_entry_changed_handlers()

class PlaylistSettings(Gtk.Box):
	def __init__(self, settings):
		super().__init__(orientation=Gtk.Orientation.VERTICAL, spacing=6, border_width=18)

		# adding vars
		self._settings=settings

		# label
		label=Gtk.Label(label=_("Choose the order of information to appear in the playlist:"), wrap=True, xalign=0)

		# Store
		# (toggle, header, actual_index)
		self._store=Gtk.ListStore(bool, str, int)

		# TreeView
		treeview=Gtk.TreeView(model=self._store, reorderable=True, headers_visible=False)
		treeview.set_search_column(-1)

		# selection
		self._selection=treeview.get_selection()

		# Column
		renderer_text=Gtk.CellRendererText()
		renderer_toggle=Gtk.CellRendererToggle()

		column_toggle=Gtk.TreeViewColumn("", renderer_toggle, active=0)
		treeview.append_column(column_toggle)

		column_text=Gtk.TreeViewColumn("", renderer_text, text=1)
		treeview.append_column(column_text)

		# fill store
		self._headers=[_("No"), _("Disc"), _("Title"), _("Artist"), _("Album"), _("Length"), _("Year"), _("Genre")]
		self._fill()

		# scroll
		scroll=Gtk.ScrolledWindow()
		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
		scroll.add(treeview)
		frame=Gtk.Frame()
		frame.add(scroll)

		# Toolbar
		toolbar=Gtk.Toolbar()
		style_context=toolbar.get_style_context()
		style_context.add_class("inline-toolbar")
		self._up_button=Gtk.ToolButton.new(Gtk.Image.new_from_icon_name("go-up-symbolic", Gtk.IconSize.SMALL_TOOLBAR))
		self._up_button.set_sensitive(False)
		self._down_button=Gtk.ToolButton.new(Gtk.Image.new_from_icon_name("go-down-symbolic", Gtk.IconSize.SMALL_TOOLBAR))
		self._down_button.set_sensitive(False)
		toolbar.insert(self._up_button, 0)
		toolbar.insert(self._down_button, 1)

		# column chooser
		column_chooser=Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
		column_chooser.pack_start(frame, True, True, 0)
		column_chooser.pack_start(toolbar, False, False, 0)

		# connect
		self._row_deleted=self._store.connect("row-deleted", self._save_permutation)
		renderer_toggle.connect("toggled", self._on_cell_toggled)
		self._up_button.connect("clicked", self._on_up_button_clicked)
		self._down_button.connect("clicked", self._on_down_button_clicked)
		self._selection.connect("changed", self._set_button_sensitivity)
		self._settings_handlers=[]
		self._settings_handlers.append(self._settings.connect("changed::column-visibilities", self._on_visibilities_changed))
		self._settings_handlers.append(self._settings.connect("changed::column-permutation", self._on_permutation_changed))
		self.connect("destroy", self._remove_handlers)

		# packing
		self.pack_start(label, False, False, 0)
		self.pack_start(column_chooser, True, True, 0)

	def _fill(self, *args):
		visibilities=self._settings.get_value("column-visibilities").unpack()
		for actual_index in self._settings.get_value("column-permutation"):
			self._store.append([visibilities[actual_index], self._headers[actual_index], actual_index])

	def _save_permutation(self, *args):
		permutation=[]
		for row in self._store:
			permutation.append(row[2])
		self._settings.set_value("column-permutation", GLib.Variant("ai", permutation))

	def _set_button_sensitivity(self, *args):
		treeiter=self._selection.get_selected()[1]
		if treeiter is None:
			self._up_button.set_sensitive(False)
			self._down_button.set_sensitive(False)
		else:
			path=self._store.get_path(treeiter)
			if self._store.iter_next(treeiter) is None:
				self._up_button.set_sensitive(True)
				self._down_button.set_sensitive(False)
			elif not path.prev():
				self._up_button.set_sensitive(False)
				self._down_button.set_sensitive(True)
			else:
				self._up_button.set_sensitive(True)
				self._down_button.set_sensitive(True)

	def _remove_handlers(self, *args):
		for handler in self._settings_handlers:
			self._settings.disconnect(handler)

	def _on_cell_toggled(self, widget, path):
		self._store[path][0]=not self._store[path][0]
		self._settings.array_modify("ab", "column-visibilities", self._store[path][2], self._store[path][0])

	def _on_up_button_clicked(self, *args):
		treeiter=self._selection.get_selected()[1]
		path=self._store.get_path(treeiter)
		path.prev()
		prev=self._store.get_iter(path)
		self._store.move_before(treeiter, prev)
		self._set_button_sensitivity()
		self._save_permutation()

	def _on_down_button_clicked(self, *args):
		treeiter=self._selection.get_selected()[1]
		path=self._store.get_path(treeiter)
		next=self._store.iter_next(treeiter)
		self._store.move_after(treeiter, next)
		self._set_button_sensitivity()
		self._save_permutation()

	def _on_visibilities_changed(self, *args):
		visibilities=self._settings.get_value("column-visibilities").unpack()
		for i, actual_index in enumerate(self._settings.get_value("column-permutation")):
			self._store[i][0]=visibilities[actual_index]

	def _on_permutation_changed(self, *args):
		equal=True
		perm=self._settings.get_value("column-permutation")
		for i, e in enumerate(self._store):
			if e[2] != perm[i]:
				equal=False
				break
		if not equal:
			self._store.handler_block(self._row_deleted)
			self._store.clear()
			self._fill()
			self._store.handler_unblock(self._row_deleted)

class SettingsDialog(Gtk.Dialog):
	def __init__(self, parent, client, settings):
		use_csd=settings.get_boolean("use-csd")
		if use_csd:
			super().__init__(title=_("Settings"), transient_for=parent, use_header_bar=True)
			# css
			style_context=self.get_style_context()
			provider=Gtk.CssProvider()
			css=b"""* {-GtkDialog-content-area-border: 0px;}"""
			provider.load_from_data(css)
			style_context.add_provider(provider, 800)
		else:
			super().__init__(title=_("Settings"), transient_for=parent)
			self.add_button(Gtk.STOCK_OK, Gtk.ResponseType.OK)
		self.set_default_size(500, 400)

		# widgets
		general=GeneralSettings(settings)
		profiles=ProfileSettings(parent, client, settings)
		playlist=PlaylistSettings(settings)

		# packing
		tabs=Gtk.Notebook()
		tabs.append_page(general, Gtk.Label(label=_("General")))
		tabs.append_page(profiles, Gtk.Label(label=_("Profiles")))
		tabs.append_page(playlist, Gtk.Label(label=_("Playlist")))
		vbox=self.get_content_area()
		vbox.set_spacing(6)
		vbox.pack_start(tabs, True, True, 0)

		self.show_all()

#################
# other dialogs #
#################

class ServerStats(Gtk.Dialog):
	def __init__(self, parent, client, settings):
		use_csd=settings.get_boolean("use-csd")
		if use_csd:
			super().__init__(title=_("Stats"), transient_for=parent, use_header_bar=True)
			# css
			style_context=self.get_style_context()
			provider=Gtk.CssProvider()
			css=b"""* {-GtkDialog-content-area-border: 0px;}"""
			provider.load_from_data(css)
			style_context.add_provider(provider, 800)
		else:
			super().__init__(title=_("Stats"), transient_for=parent)
			self.add_button(Gtk.STOCK_OK, Gtk.ResponseType.OK)
		self.set_resizable(False)

		# Store
		# (tag, value)
		store=Gtk.ListStore(str, str)

		# TreeView
		treeview=Gtk.TreeView(model=store, headers_visible=False)
		treeview.set_can_focus(False)
		treeview.set_search_column(-1)

		# selection
		sel=treeview.get_selection()
		sel.set_mode(Gtk.SelectionMode.NONE)

		# Column
		renderer_text=Gtk.CellRendererText()
		renderer_text_ralign=Gtk.CellRendererText(xalign=1.0)

		column_tag=Gtk.TreeViewColumn("", renderer_text_ralign, text=0)
		treeview.append_column(column_tag)

		column_value=Gtk.TreeViewColumn("", renderer_text, text=1)
		treeview.append_column(column_value)

		store.append(["protocol:", str(client.mpd_version)])

		stats=client.wrapped_call("stats")
		for key in stats:
			print_key=key+":"
			if key == "uptime" or key == "playtime" or key == "db_playtime":
				store.append([print_key, ClientHelper.seconds_to_display_time(int(stats[key]))])
			elif key == "db_update":
				store.append([print_key, str(datetime.datetime.fromtimestamp(int(stats[key]))).replace(":", "∶")])
			else:
				store.append([print_key, stats[key]])
		frame=Gtk.Frame()
		frame.add(treeview)
		self.vbox.pack_start(frame, True, True, 0)
		self.vbox.set_spacing(6)
		self.show_all()
		self.run()

class AboutDialog(Gtk.AboutDialog):
	def __init__(self, window):
		super().__init__(transient_for=window, modal=True)
		self.set_program_name("mpdevil")
		self.set_version(VERSION)
		self.set_comments(_("A simple music browser for MPD"))
		self.set_authors(["Martin Wagner"])
		self.set_website("https://github.com/SoongNoonien/mpdevil")
		self.set_copyright("\xa9 2020 Martin Wagner")
		self.set_logo_icon_name("mpdevil")

#################################
# small general purpose widgets #
#################################

class PixelSizedIcon(Gtk.Image):
	def __init__(self, icon_name, pixel_size):
		super().__init__()
		self.set_from_icon_name(icon_name, Gtk.IconSize.BUTTON)
		if pixel_size > 0:
			self.set_pixel_size(pixel_size)

class FocusFrame(Gtk.Overlay):
	def __init__(self):
		super().__init__()

		self._frame=Gtk.Frame()
		self._frame.set_no_show_all(True)

		# css
		style_context=self._frame.get_style_context()
		provider=Gtk.CssProvider()
		css=b"""* {border-color: @theme_selected_bg_color; border-width: 2px;}"""
		provider.load_from_data(css)
		style_context.add_provider(provider, 800)

		self.add_overlay(self._frame)
		self.set_overlay_pass_through(self._frame, True)

	def set_widget(self, widget):
		widget.connect("focus-in-event", self._on_focus_in_event)
		widget.connect("focus-out-event", self._on_focus_out_event)

	def _on_focus_in_event(self, *args):
		self._frame.show()

	def _on_focus_out_event(self, *args):
		self._frame.hide()

class SongPopover(Gtk.Popover):
	def __init__(self, song, relative, x, y):
		super().__init__()
		rect=Gdk.Rectangle()
		rect.x=x
		# Gtk places popovers 26px above the given position for no obvious reasons, so I move them 26px
		rect.y=y+26
		rect.width = 1
		rect.height = 1
		self.set_pointing_to(rect)
		self.set_relative_to(relative)

		# Store
		# (tag, display-value, tooltip)
		store=Gtk.ListStore(str, str, str)

		# TreeView
		treeview=Gtk.TreeView(model=store, headers_visible=False, search_column=-1, tooltip_column=2)
		treeview.set_can_focus(False)
		sel=treeview.get_selection()
		sel.set_mode(Gtk.SelectionMode.NONE)

		frame=Gtk.Frame(border_width=3)
		frame.add(treeview)

		# Column
		renderer_text=Gtk.CellRendererText(width_chars=50, ellipsize=Pango.EllipsizeMode.MIDDLE, ellipsize_set=True)
		renderer_text_ralign=Gtk.CellRendererText(xalign=1.0)

		column_tag=Gtk.TreeViewColumn(_("MPD-Tag"), renderer_text_ralign, text=0)
		column_tag.set_property("resizable", False)
		treeview.append_column(column_tag)

		column_value=Gtk.TreeViewColumn(_("Value"), renderer_text, text=1)
		column_value.set_property("resizable", False)
		treeview.append_column(column_value)

		# packing
		self.add(frame)

		song=ClientHelper.song_to_str_dict(song)
		for tag, value in song.items():
			tooltip=value.replace("&", "&amp;")
			if tag == "time":
				store.append([tag+":", ClientHelper.seconds_to_display_time(int(value)), tooltip])
			elif tag == "last-modified":
				time=datetime.datetime.strptime(value, "%Y-%m-%dT%H:%M:%SZ")
				store.append([tag+":", time.strftime("%a %d %B %Y, %H∶%M UTC"), tooltip])
			else:
				store.append([tag+":", value, tooltip])
		frame.show_all()

class Cover(object):
	def __init__(self, settings, song):
		self.path=None
		if song != {}:
			song_file=song["file"]

			active_profile=settings.get_int("active-profile")

			lib_path=settings.get_value("paths")[active_profile]
			regex_str=settings.get_value("regex")[active_profile]

			if regex_str == "":
				regex=re.compile(COVER_REGEX, flags=re.IGNORECASE)
			else:
				regex_str=regex_str.replace("%AlbumArtist%", song.get("albumartist", ""))
				regex_str=regex_str.replace("%Album%", song.get("album", ""))
				try:
					regex=re.compile(regex_str, flags=re.IGNORECASE)
				except:
					print("illegal regex:", regex_str)
					return

			if song_file is not None:
				head, tail=os.path.split(song_file)
				song_dir=os.path.join(lib_path, head)
				if os.path.exists(song_dir):
					for f in os.listdir(song_dir):
						if regex.match(f):
							self.path=os.path.join(song_dir, f)
							break

	def get_pixbuf(self, size):
		if self.path is None:  # fallback needed
			self.path=Gtk.IconTheme.get_default().lookup_icon("media-optical", size, Gtk.IconLookupFlags.FORCE_SVG).get_filename()
		return GdkPixbuf.Pixbuf.new_from_file_at_size(self.path, size, size)

###########
# browser #
###########

class SongsView(Gtk.TreeView):
	def __init__(self, client, store, file_column_id):
		super().__init__(model=store)
		self.set_search_column(-1)
		self.columns_autosize()

		# add vars
		self._client=client
		self._store=store
		self._file_column_id=file_column_id

		# selection
		self._selection=self.get_selection()
		self._selection.set_mode(Gtk.SelectionMode.SINGLE)

		# connect
		self.connect("row-activated", self._on_row_activated)
		self.connect("button-press-event", self._on_button_press_event)
		self._key_press_event=self.connect("key-press-event", self._on_key_press_event)

	def clear(self):
		self._store.clear()

	def count(self):
		return len(self._store)

	def get_files(self):
		return_list=[]
		for row in self._store:
			return_list.append(row[self._file_column_id])
		return return_list

	def _on_row_activated(self, widget, path, view_column):
		self._client.wrapped_call("files_to_playlist", [self._store[path][self._file_column_id]], "play")

	def _on_button_press_event(self, widget, event):
		if event.button == 1 and event.type == Gdk.EventType.BUTTON_PRESS:
			try:
				path=widget.get_path_at_pos(int(event.x), int(event.y))[0]
				self._client.wrapped_call("files_to_playlist", [self._store[path][self._file_column_id]])
			except:
				pass
		elif event.button == 2 and event.type == Gdk.EventType.BUTTON_PRESS:
			try:
				path=widget.get_path_at_pos(int(event.x), int(event.y))[0]
				self._client.wrapped_call("files_to_playlist", [self._store[path][self._file_column_id]], "append")
			except:
				pass
		elif event.button == 3 and event.type == Gdk.EventType.BUTTON_PRESS:
			try:
				path=widget.get_path_at_pos(int(event.x), int(event.y))[0]
				file_name=self._store[path][self._file_column_id]
				pop=SongPopover(self._client.wrapped_call("get_metadata", file_name), widget, int(event.x), int(event.y))
				pop.popup()
				pop.show_all()
			except:
				pass

	def _on_key_press_event(self, widget, event):
		self.handler_block(self._key_press_event)
		if event.keyval == Gdk.keyval_from_name("p"):
			treeview, treeiter=self._selection.get_selected()
			if treeiter is not None:
				self._client.wrapped_call("files_to_playlist", [self._store.get_value(treeiter, self._file_column_id)])
		elif event.keyval == Gdk.keyval_from_name("a"):
			treeview, treeiter=self._selection.get_selected()
			if treeiter is not None:
				self._client.wrapped_call("files_to_playlist", [self._store.get_value(treeiter, self._file_column_id)], "append")
		elif event.keyval == Gdk.keyval_from_name("Menu"):
			treeview, treeiter=self._selection.get_selected()
			if treeiter is not None:
				path=self._store.get_path(treeiter)
				cell=self.get_cell_area(path, None)
				file_name=self._store[path][self._file_column_id]
				pop=SongPopover(self._client.wrapped_call("get_metadata", file_name), widget, int(cell.x), int(cell.y))
				pop.popup()
				pop.show_all()
		self.handler_unblock(self._key_press_event)

class SongsWindow(Gtk.Box):
	def __init__(self, client, store, file_column_id):
		super().__init__(orientation=Gtk.Orientation.VERTICAL)

		# adding vars
		self._client=client

		# treeview
		self._songs_view=SongsView(client, store, file_column_id)

		# scroll
		scroll=Gtk.ScrolledWindow()
		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
		scroll.add(self._songs_view)

		# buttons
		append_button=Gtk.Button.new_with_mnemonic(_("_Append"))
		append_button.set_image(Gtk.Image.new_from_icon_name("list-add", Gtk.IconSize.BUTTON))
		append_button.set_tooltip_text(_("Add all titles to playlist"))
		play_button=Gtk.Button.new_with_mnemonic(_("_Play"))
		play_button.set_image(Gtk.Image.new_from_icon_name("media-playback-start", Gtk.IconSize.BUTTON))
		play_button.set_tooltip_text(_("Directly play all titles"))
		enqueue_button=Gtk.Button.new_with_mnemonic(_("_Enqueue"))
		enqueue_button.set_image(Gtk.Image.new_from_icon_name("insert-object", Gtk.IconSize.BUTTON))
		enqueue_button.set_tooltip_text(_("Append all titles after the currently playing track and clear the playlist from all other songs"))

		# button box
		button_box=Gtk.ButtonBox(layout_style=Gtk.ButtonBoxStyle.EXPAND)

		# action bar
		self._action_bar=Gtk.ActionBar()

		# connect
		append_button.connect("clicked", self._on_append_button_clicked)
		play_button.connect("clicked", self._on_play_button_clicked)
		enqueue_button.connect("clicked", self._on_enqueue_button_clicked)

		# packing
		frame=FocusFrame()
		frame.set_widget(self._songs_view)
		frame.add(scroll)
		self.pack_start(frame, True, True, 0)
		button_box.pack_start(append_button, True, True, 0)
		button_box.pack_start(play_button, True, True, 0)
		button_box.pack_start(enqueue_button, True, True, 0)
		self._action_bar.pack_start(button_box)
		self.pack_start(self._action_bar, False, False, 0)

	def get_treeview(self):
		return self._songs_view

	def get_action_bar(self):
		return self._action_bar

	def _on_append_button_clicked(self, *args):
		self._client.wrapped_call("files_to_playlist", self._songs_view.get_files(), "append")

	def _on_play_button_clicked(self, *args):
		self._client.wrapped_call("files_to_playlist", self._songs_view.get_files(), "play")

	def _on_enqueue_button_clicked(self, *args):
		self._client.wrapped_call("files_to_playlist", self._songs_view.get_files(), "enqueue")

class SearchWindow(Gtk.Box):
	def __init__(self, client):
		super().__init__(orientation=Gtk.Orientation.VERTICAL)

		# adding vars
		self._client=client

		# tag switcher
		self._tags=Gtk.ComboBoxText()

		# search entry
		self.search_entry=Gtk.SearchEntry()

		# label
		self._hits_label=Gtk.Label(xalign=1)

		# store
		# (track, title, artist, album, duration, file, sort track)
		self._store=Gtk.ListStore(str, str, str, str, str, str, int)
		self._store.set_default_sort_func(lambda *args: 0)

		# songs window
		self._songs_window=SongsWindow(self._client, self._store, 5)

		# action bar
		self._action_bar=self._songs_window.get_action_bar()
		self._action_bar.set_sensitive(False)

		# songs view
		self._songs_view=self._songs_window.get_treeview()

		# columns
		renderer_text=Gtk.CellRendererText(ellipsize=Pango.EllipsizeMode.END, ellipsize_set=True)
		renderer_text_ralign=Gtk.CellRendererText(xalign=1.0)

		column_track=Gtk.TreeViewColumn(_("No"), renderer_text_ralign, text=0)
		column_track.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_track.set_property("resizable", False)
		self._songs_view.append_column(column_track)

		column_title=Gtk.TreeViewColumn(_("Title"), renderer_text, text=1)
		column_title.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_title.set_property("resizable", False)
		column_title.set_property("expand", True)
		self._songs_view.append_column(column_title)

		column_artist=Gtk.TreeViewColumn(_("Artist"), renderer_text, text=2)
		column_artist.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_artist.set_property("resizable", False)
		column_artist.set_property("expand", True)
		self._songs_view.append_column(column_artist)

		column_album=Gtk.TreeViewColumn(_("Album"), renderer_text, text=3)
		column_album.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_album.set_property("resizable", False)
		column_album.set_property("expand", True)
		self._songs_view.append_column(column_album)

		column_time=Gtk.TreeViewColumn(_("Length"), renderer_text, text=4)
		column_time.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_time.set_property("resizable", False)
		self._songs_view.append_column(column_time)

		column_track.set_sort_column_id(6)
		column_title.set_sort_column_id(1)
		column_artist.set_sort_column_id(2)
		column_album.set_sort_column_id(3)
		column_time.set_sort_column_id(4)

		# connect
		self.search_entry.connect("search-changed", self._on_search_changed)
		self._tags.connect("changed", self._on_search_changed)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._client.emitter.connect("disconnected", self._on_disconnected)

		# packing
		hbox=Gtk.Box(spacing=6, border_width=6)
		hbox.pack_start(self.search_entry, True, True, 0)
		hbox.pack_end(self._tags, False, False, 0)
		self._hits_label.set_margin_end(6)
		self._action_bar.pack_end(self._hits_label)
		self.pack_start(hbox, False, False, 0)
		self.pack_start(Gtk.Separator.new(orientation=Gtk.Orientation.HORIZONTAL), False, False, 0)
		self.pack_start(self._songs_window, True, True, 0)

	def clear(self, *args):
		self._songs_view.clear()
		self.search_entry.set_text("")
		self._tags.remove_all()

	def _on_disconnected(self, *args):
		self._tags.set_sensitive(False)
		self.search_entry.set_sensitive(False)
		self.clear()

	def _on_reconnected(self, *args):
		self._tags.append_text("any")
		for tag in self._client.wrapped_call("tagtypes"):
			if not tag.startswith("MUSICBRAINZ"):
				self._tags.append_text(tag)
		self._tags.set_active(0)
		self._tags.set_sensitive(True)
		self.search_entry.set_sensitive(True)

	def _on_search_changed(self, widget):
		self._songs_view.clear()
		self._hits_label.set_text("")
		if len(self.search_entry.get_text()) > 1:
			songs=self._client.wrapped_call("search", self._tags.get_active_text(), self.search_entry.get_text())
			for s in songs:
				song=ClientHelper.extend_song_for_display(ClientHelper.song_to_str_dict(s))
				self._store.append([
						song["track"], song["title"],
						song["artist"], song["album"],
						song["human_duration"], song["file"],
						int(song.get("track", 0))
				])
			self._hits_label.set_text(_("{num} hits").format(num=self._songs_view.count()))
		if self._songs_view.count() == 0:
			self._action_bar.set_sensitive(False)
		else:
			self._action_bar.set_sensitive(True)

class GenreSelect(Gtk.ComboBoxText):
	__gsignals__={"genre_changed": (GObject.SignalFlags.RUN_FIRST, None, ())}

	def __init__(self, client):
		super().__init__(wrap_width=3)

		# adding vars
		self._client=client

		# connect
		self._changed=self.connect("changed", self._on_changed)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._client.emitter.connect("update", self._refresh)

	def deactivate(self):
		self.set_active(0)

	def _clear(self, *args):
		self.handler_block(self._changed)
		self.remove_all()
		self.handler_unblock(self._changed)

	def get_selected_genre(self):
		if self.get_active() == 0:
			return None
		else:
			return self.get_active_text()

	def _refresh(self, *args):
		self.handler_block(self._changed)
		self.remove_all()
		self.append_text(_("all genres"))
		for genre in self._client.wrapped_call("comp_list", "genre"):
			self.append_text(genre)
		self.set_active(0)
		self.handler_unblock(self._changed)

	def _on_changed(self, *args):
		self.emit("genre_changed")

	def _on_disconnected(self, *args):
		self.set_sensitive(False)
		self._clear()

	def _on_reconnected(self, *args):
		self._refresh()
		self.set_sensitive(True)

class ArtistWindow(FocusFrame):
	__gsignals__={"artists_changed": (GObject.SignalFlags.RUN_FIRST, None, ())}

	def __init__(self, client, settings, genre_select):
		super().__init__()

		# adding vars
		self._client=client
		self._settings=settings
		self._genre_select=genre_select

		# artistStore
		# (name, weight, initial-letter, weight-initials)
		self._store=Gtk.ListStore(str, Pango.Weight, str, Pango.Weight)

		# TreeView
		self._treeview=Gtk.TreeView(model=self._store, activate_on_single_click=True, search_column=0, headers_visible=False)
		self._treeview.columns_autosize()

		# Selection
		self._selection=self._treeview.get_selection()
		self._selection.set_mode(Gtk.SelectionMode.SINGLE)

		# Columns
		renderer_text_malign=Gtk.CellRendererText(xalign=0.5)
		self._column_initials=Gtk.TreeViewColumn("", renderer_text_malign, text=2, weight=3)
		self._column_initials.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		self._column_initials.set_property("resizable", False)
		self._column_initials.set_visible(self._settings.get_boolean("show-initials"))
		self._treeview.append_column(self._column_initials)

		renderer_text=Gtk.CellRendererText(ellipsize=Pango.EllipsizeMode.END, ellipsize_set=True)
		self._column_name=Gtk.TreeViewColumn("", renderer_text, text=0, weight=1)
		self._column_name.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		self._column_name.set_property("resizable", False)
		self._treeview.append_column(self._column_name)

		# scroll
		scroll=Gtk.ScrolledWindow()
		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
		scroll.add(self._treeview)

		# connect
		self._treeview.connect("row-activated", self._on_row_activated)
		self._settings.connect("changed::use-album-artist", self._refresh)
		self._settings.connect("changed::show-initials", self._on_show_initials_changed)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._client.emitter.connect("update", self._refresh)
		self._genre_select.connect("genre_changed", self._refresh)

		self.set_widget(self._treeview)
		self.add(scroll)

	def _clear(self, *args):
		self._store.clear()

	def select(self, artist):
		row_num=len(self._store)
		for i in range(0, row_num):
			path=Gtk.TreePath(i)
			if self._store[path][0] == artist:
				self._treeview.set_cursor(path, None, False)
				if self.get_selected_artists()[1] != [artist]:
					self._treeview.row_activated(path, self._column_name)
				break

	def get_selected_artists(self):
		artists=[]
		genre=self._genre_select.get_selected_genre()
		if self._store[Gtk.TreePath(0)][1] == Pango.Weight.BOLD:
			for row in self._store:
				artists.append(row[0])
			return (genre, artists[1:])
		else:
			for row in self._store:
				if row[1] == Pango.Weight.BOLD:
					artists.append(row[0])
					break
			return (genre, artists)

	def highlight_selected(self):
		for path, row in enumerate(self._store):
			if row[1] == Pango.Weight.BOLD:
				self._treeview.set_cursor(path, None, False)
				break

	def _refresh(self, *args):
		self._selection.set_mode(Gtk.SelectionMode.NONE)
		self._clear()
		self._store.append([_("all artists"), Pango.Weight.BOOK, "", Pango.Weight.BOOK])
		genre=self._genre_select.get_selected_genre()
		if genre is None:
			artists=self._client.wrapped_call("comp_list", self._settings.get_artist_type())
		else:
			artists=self._client.wrapped_call("comp_list", self._settings.get_artist_type(), "genre", genre)
		current_char=""
		for artist in artists:
			try:
				if current_char == artist[0]:
					self._store.append([artist, Pango.Weight.BOOK, "", Pango.Weight.BOOK])
				else:
					self._store.append([artist, Pango.Weight.BOOK, artist[0], Pango.Weight.BOLD])
					current_char=artist[0]
			except:
				self._store.append([artist, Pango.Weight.BOOK, "", Pango.Weight.BOOK])
		self._selection.set_mode(Gtk.SelectionMode.SINGLE)
		self.emit("artists_changed")

	def _on_row_activated(self, widget, path, view_column):
		for row in self._store:  # reset bold text
			row[1]=Pango.Weight.BOOK
		self._store[path][1]=Pango.Weight.BOLD
		self.emit("artists_changed")

	def _on_disconnected(self, *args):
		self.set_sensitive(False)
		self._clear()

	def _on_reconnected(self, *args):
		self._refresh()
		self.set_sensitive(True)

	def _on_show_initials_changed(self, *args):
		self._column_initials.set_visible(self._settings.get_boolean("show-initials"))

class AlbumDialog(Gtk.Dialog):  # also used by 'MainCover'
	def __init__(self, parent, client, settings, album, album_artist, year):
		use_csd=settings.get_boolean("use-csd")
		if use_csd:
			super().__init__(transient_for=parent, use_header_bar=True)
		else:
			super().__init__(transient_for=parent)

		# css
		style_context=self.get_style_context()
		provider=Gtk.CssProvider()
		if use_csd:
			css=b"""* {-GtkDialog-content-area-border: 0px;}"""
		else:
			css=b"""* {-GtkDialog-action-area-border: 0px;}"""
		provider.load_from_data(css)
		style_context.add_provider(provider, 800)

		# adding vars
		self._client=client
		self._settings=settings
		songs=self._client.wrapped_call("find", "album", album, "date", year, self._settings.get_artist_type(), album_artist)

		# determine size
		size=parent.get_size()
		diagonal=(size[0]**2+size[1]**2)**(0.5)
		h=diagonal//4
		w=h*5//4
		self.set_default_size(w, h)

		# title
		duration=ClientHelper.calc_display_length(songs)
		if year == "":
			self.set_title("{} - {} ({})".format(album_artist, album, duration))
		else:
			self.set_title("{} - {} ({}) ({})".format(album_artist, album, year, duration))

		# store
		# (track, title (artist), duration, file)
		store=Gtk.ListStore(str, str, str, str)
		for s in songs:
			song=ClientHelper.extend_song_for_display(s)
			if type(song["title"]) == list:  # could be impossible
				title=(", ".join(song["title"]))
			else:
				title=song["title"]
			if type(song["artist"]) == list:
				try:
					song["artist"].remove(album_artist)
				except:
					pass
				artist=(", ".join(song["artist"]))
			else:
				artist=song["artist"]
			if artist == album_artist:
				title_artist="<b>{}</b>".format(title)
			else:
				title_artist="<b>{}</b> - {}".format(title, artist)
			title_artist=title_artist.replace("&", "&amp;")
			store.append([song["track"], title_artist, song["human_duration"], song["file"]])

		# songs window
		songs_window=SongsWindow(self._client, store, 3)

		# songs view
		songs_view=songs_window.get_treeview()

		# columns
		renderer_text=Gtk.CellRendererText(ellipsize=Pango.EllipsizeMode.END, ellipsize_set=True)
		renderer_text_ralign=Gtk.CellRendererText(xalign=1.0)

		column_track=Gtk.TreeViewColumn(_("No"), renderer_text_ralign, text=0)
		column_track.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_track.set_property("resizable", False)
		songs_view.append_column(column_track)

		column_title=Gtk.TreeViewColumn(_("Title"), renderer_text, markup=1)
		column_title.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_title.set_property("resizable", False)
		column_title.set_property("expand", True)
		songs_view.append_column(column_title)

		column_time=Gtk.TreeViewColumn(_("Length"), renderer_text, text=2)
		column_time.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
		column_time.set_property("resizable", False)
		songs_view.append_column(column_time)

		# close button
		close_button=Gtk.ToggleButton(image=Gtk.Image.new_from_icon_name("window-close", Gtk.IconSize.BUTTON), label=_("Close"))

		# action bar
		action_bar=songs_window.get_action_bar()
		action_bar.pack_end(close_button)

		# connect
		close_button.connect("clicked", self._on_close_button_clicked)

		# packing
		self.vbox.pack_start(songs_window, True, True, 0)  # vbox default widget of dialogs
		self.show_all()

	def open(self):
		response=self.run()

	def _on_close_button_clicked(self, *args):
		self.destroy()

class AlbumWindow(FocusFrame):
	def __init__(self, client, settings, artist_window, window):
		super().__init__()

		# adding vars
		self._settings=settings
		self._client=client
		self._artist_window=artist_window
		self._window=window
		self._button_event=(None, None)
		self.stop_flag=False
		self._done=True
		self._pending=[]

		# cover, display_label, display_label_artist, tooltip(titles), album, year, artist
		self._store=Gtk.ListStore(GdkPixbuf.Pixbuf, str, str, str, str, str, str)
		self._sort_settings()

		# iconview
		self._iconview=Gtk.IconView(model=self._store, item_width=0, pixbuf_column=0, markup_column=1)
		self._tooltip_settings()

		# scroll
		scroll=Gtk.ScrolledWindow()
		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
		scroll.add(self._iconview)

		# connect
		self._iconview.connect("item-activated", self._on_item_activated)
		self._iconview.connect("button-release-event", self._on_button_release_event)
		self._iconview.connect("button-press-event", self._on_button_press_event)
		self._key_press_event=self.connect("key-press-event", self._on_key_press_event)
		self._client.emitter.connect("update", self._clear)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._settings.connect("changed::show-album-view-tooltips", self._tooltip_settings)
		self._settings.connect("changed::sort-albums-by-year", self._sort_settings)
		self._settings.connect("changed::album-cover", self._on_cover_size_changed)
		self._settings.connect("changed::use-album-artist", self._clear)
		self._artist_window.connect("artists_changed", self._refresh)

		self.set_widget(self._iconview)
		self.add(scroll)

	def _workaround_clear(self):
		self._store.clear()
		# workaround (scrollbar still visible after clear)
		self._iconview.set_model(None)
		self._iconview.set_model(self._store)

	def _clear(self, *args):
		if self._done:
			self._workaround_clear()
		elif not self._clear in self._pending:
			self.stop_flag=True
			self._pending.append(self._clear)

	def scroll_to_current_album(self):
		def callback():
			song=ClientHelper.song_to_first_str_dict(self._client.wrapped_call("currentsong"))
			album=song.get("album", "")
			self._iconview.unselect_all()
			row_num=len(self._store)
			for i in range(0, row_num):
				path=Gtk.TreePath(i)
				treeiter=self._store.get_iter(path)
				if self._store.get_value(treeiter, 4) == album:
					self._iconview.set_cursor(path, None, False)
					self._iconview.select_path(path)
					self._iconview.scroll_to_path(path, True, 0, 0)
					break
		if self._done:
			callback()
		elif not self.scroll_to_current_album in self._pending:
			self._pending.append(self.scroll_to_current_album)

	def _tooltip_settings(self, *args):
		if self._settings.get_boolean("show-album-view-tooltips"):
			self._iconview.set_tooltip_column(3)
		else:
			self._iconview.set_tooltip_column(-1)

	def _sort_settings(self, *args):
		if self._settings.get_boolean("sort-albums-by-year"):
			self._store.set_sort_column_id(5, Gtk.SortType.ASCENDING)
		else:
			self._store.set_sort_column_id(1, Gtk.SortType.ASCENDING)

	def _add_row(self, row):  # needed for GLib.idle
		self._store.append(row)
		return False  # stop after one run

	def _refresh(self, *args):
		def callback():
			GLib.idle_add(self._workaround_clear)
			try:  # self._artist_window could still be empty
				genre, artists=self._artist_window.get_selected_artists()
			except:
				GLib.idle_add(self._done_callback)
			# show artist names if all albums are shown
			if len(artists) > 1:
				self._iconview.set_markup_column(2)
			else:
				self._iconview.set_markup_column(1)
			# prepare albmus list (run all mpd related commands)
			albums=[]
			artist_type=self._settings.get_artist_type()
			for artist in artists:
				try:  # client cloud meanwhile disconnect
					if self.stop_flag:
						GLib.idle_add(self._done_callback)
						return
					else:
						if genre is None:
							album_candidates=self._client.wrapped_call("comp_list", "album", artist_type, artist)
						else:
							album_candidates=self._client.wrapped_call(
								"comp_list", "album", artist_type, artist, "genre", genre
							)
						for album in album_candidates:
							years=self._client.wrapped_call("comp_list", "date", "album", album, artist_type, artist)
							for year in years:
								songs=self._client.wrapped_call(
									"find", "album", album, "date", year, artist_type, artist
								)
								albums.append({"artist": artist, "album": album, "year": year, "songs": songs})
						while Gtk.events_pending():
							Gtk.main_iteration_do(True)
				except MPDBase.ConnectionError:
					GLib.idle_add(self._done_callback)
					return
			# display albums
			if self._settings.get_boolean("sort-albums-by-year"):
				albums=sorted(albums, key=lambda k: k["year"])
			else:
				albums=sorted(albums, key=lambda k: k["album"])
			size=self._settings.get_int("album-cover")
			for i, album in enumerate(albums):
				if self.stop_flag:
					break
				else:
					cover=Cover(self._settings, album["songs"][0]).get_pixbuf(size)
					# tooltip
					length_human_readable=ClientHelper.calc_display_length(album["songs"])
					discs=int(album["songs"][-1].get("disc", 1))
					if discs > 1:
						tooltip=_("{titles} titles on {discs} discs ({length})").format(
							titles=len(album["songs"]), discs=discs, length=length_human_readable)
					else:
						tooltip=_("{titles} titles ({length})").format(
							titles=len(album["songs"]), length=length_human_readable)
					# album label
					if album["year"] == "":
						display_label="<b>{}</b>".format(album["album"])
					else:
						display_label="<b>{}</b> ({})".format(album["album"], album["year"])
					display_label_artist=display_label+"\n"+album["artist"]
					display_label=display_label.replace("&", "&amp;")
					display_label_artist=display_label_artist.replace("&", "&amp;")
					# add album
					GLib.idle_add(self._add_row,
						[cover, display_label, display_label_artist, tooltip, album["album"], album["year"], album["artist"]]
					)
					# execute pending events
					if i%16 == 0:
						while Gtk.events_pending():
							Gtk.main_iteration_do(True)
			GLib.idle_add(self._done_callback)
		if self._done:
			self._done=False
			callback()
		elif not self._refresh in self._pending:
			self.stop_flag=True
			self._pending.append(self._refresh)

	def _path_to_playlist(self, path, mode="default"):
		album=self._store[path][4]
		year=self._store[path][5]
		artist=self._store[path][6]
		self._client.wrapped_call("album_to_playlist", album, artist, year, mode)

	def _open_album_dialog(self, path):
		if self._client.connected():
			album=self._store[path][4]
			year=self._store[path][5]
			artist=self._store[path][6]
			album_dialog=AlbumDialog(self._window, self._client, self._settings, album, artist, year)
			album_dialog.open()
			album_dialog.destroy()

	def _done_callback(self, *args):
		self.stop_flag=False
		self._done=True
		pending=self._pending
		self._pending=[]
		for p in pending:
			try:
				p()
			except:
				pass
		return False

	def _on_button_press_event(self, widget, event):
		path=widget.get_path_at_pos(int(event.x), int(event.y))
		if event.type == Gdk.EventType.BUTTON_PRESS:
			self._button_event=(event.button, path)

	def _on_button_release_event(self, widget, event):
		path=widget.get_path_at_pos(int(event.x), int(event.y))
		if path is not None:
			if self._button_event == (event.button, path):
				if event.button == 1 and event.type == Gdk.EventType.BUTTON_RELEASE:
					self._path_to_playlist(path)
				elif event.button == 2 and event.type == Gdk.EventType.BUTTON_RELEASE:
					self._path_to_playlist(path, "append")
				elif event.button == 3 and event.type == Gdk.EventType.BUTTON_RELEASE:
					self._open_album_dialog(path)

	def _on_key_press_event(self, widget, event):
		self.handler_block(self._key_press_event)
		if event.keyval == Gdk.keyval_from_name("p"):
			paths=self._iconview.get_selected_items()
			if len(paths) != 0:
				self._path_to_playlist(paths[0])
		elif event.keyval == Gdk.keyval_from_name("a"):
			paths=self._iconview.get_selected_items()
			if len(paths) != 0:
				self._path_to_playlist(paths[0], "append")
		elif event.keyval == Gdk.keyval_from_name("Menu"):
			paths=self._iconview.get_selected_items()
			if len(paths) != 0:
				self._open_album_dialog(paths[0])
		self.handler_unblock(self._key_press_event)

	def _on_item_activated(self, widget, path):
		treeiter=self._store.get_iter(path)
		selected_album=self._store.get_value(treeiter, 4)
		selected_album_year=self._store.get_value(treeiter, 5)
		selected_artist=self._store.get_value(treeiter, 6)
		self._client.wrapped_call("album_to_playlist", selected_album, selected_artist, selected_album_year, "play")

	def _on_disconnected(self, *args):
		self._iconview.set_sensitive(False)
		self._clear()

	def _on_reconnected(self, *args):
		self._iconview.set_sensitive(True)

	def _on_cover_size_changed(self, *args):
		def callback():
			self._refresh()
			return False
		GLib.idle_add(callback)

class Browser(Gtk.Paned):
	__gsignals__={"search_focus_changed": (GObject.SignalFlags.RUN_FIRST, None, (bool,))}

	def __init__(self, client, settings, window):
		super().__init__(orientation=Gtk.Orientation.HORIZONTAL)  # paned1

		# adding vars
		self._client=client
		self._settings=settings
		self._use_csd=self._settings.get_boolean("use-csd")

		if self._use_csd:
			self._icon_size=0
		else:
			self._icon_size=self._settings.get_int("icon-size-sec")

		# widgets
		self._icons={}
		icons_data=("go-previous-symbolic", "system-search-symbolic")
		for data in icons_data:
			self._icons[data]=PixelSizedIcon(data, self._icon_size)

		self.back_to_current_album_button=Gtk.Button(image=self._icons["go-previous-symbolic"], tooltip_text=_("Back to current album"))
		self.back_to_current_album_button.set_can_focus(False)
		self.search_button=Gtk.ToggleButton(image=self._icons["system-search-symbolic"], tooltip_text=_("Search"))
		self.search_button.set_can_focus(False)
		self._genre_select=GenreSelect(self._client)
		self._artist_window=ArtistWindow(self._client, self._settings, self._genre_select)
		self._search_window=SearchWindow(self._client)
		self._album_window=AlbumWindow(self._client, self._settings, self._artist_window, window)

		# connect
		self.back_to_current_album_button.connect("clicked", self._back_to_current_album)
		self.search_button.connect("toggled", self._on_search_toggled)
		self._search_window.search_entry.connect("focus_in_event", lambda *args: self.emit("search_focus_changed", True))
		self._search_window.search_entry.connect("focus_out_event", lambda *args: self.emit("search_focus_changed", False))
		self._artist_window.connect("artists_changed", self._on_artists_changed)
		self._settings.connect("notify::mini-player", self._on_mini_player)
		if not self._use_csd:
			self._settings.connect("changed::icon-size-sec", self._on_icon_size_changed)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)

		# packing
		self._stack=Gtk.Stack(transition_type=Gtk.StackTransitionType.CROSSFADE)
		self._stack.add_named(self._album_window, "albums")
		self._stack.add_named(self._search_window, "search")

		hbox=Gtk.Box(spacing=6, border_width=6)
		if self._use_csd:
			hbox.pack_start(self._genre_select, True, True, 0)
		else:
			hbox.pack_start(self.back_to_current_album_button, False, False, 0)
			hbox.pack_start(self._genre_select, True, True, 0)
			hbox.pack_start(self.search_button, False, False, 0)
		box1=Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
		box1.pack_start(hbox, False, False, 0)
		box1.pack_start(Gtk.Separator.new(orientation=Gtk.Orientation.HORIZONTAL), False, False, 0)
		box1.pack_start(self._artist_window, True, True, 0)
		self.pack1(box1, False, False)
		self.pack2(self._stack, True, False)

		self.set_position(self._settings.get_int("paned1"))

	def save_settings(self):
		self._settings.set_int("paned1", self.get_position())

	def _back_to_current_album(self, *args):
		def callback():
			try:
				song=ClientHelper.song_to_first_str_dict(self._client.wrapped_call("currentsong"))
				if song == {}:
					return False
			except MPDBase.ConnectionError:
				return False
			self.search_button.set_active(False)
			# get artist name
			try:
				artist=song[self._settings.get_artist_type()]
			except:
				artist=song.get("artist", "")
			# deactivate genre filter to show all artists (if needed)
			try:
				if song["genre"] != self._genre_select.get_selected_genre():
					self._genre_select.deactivate()
			except:
				self._genre_select.deactivate()
			# select artist
			if len(self._artist_window.get_selected_artists()[1]) <= 1:  # one artist selected
				self._artist_window.select(artist)
			else:  # all artists selected
				self.search_button.set_active(False)
				self._artist_window.highlight_selected()
			self._album_window.scroll_to_current_album()
			return False
		GLib.idle_add(callback)  # ensure it will be executed even when albums are still loading

	def _on_search_toggled(self, widget):
		if widget.get_active():
			self._stack.set_visible_child_name("search")
			self._search_window.search_entry.grab_focus()
		else:
			self._stack.set_visible_child_name("albums")

	def _on_reconnected(self, *args):
		self._back_to_current_album()
		self.back_to_current_album_button.set_sensitive(True)
		self.search_button.set_sensitive(True)

	def _on_disconnected(self, *args):
		self.back_to_current_album_button.set_sensitive(False)
		self.search_button.set_active(False)
		self.search_button.set_sensitive(False)

	def _on_artists_changed(self, *args):
		self.search_button.set_active(False)

	def _on_mini_player(self, obj, typestring):
		visibility=not(obj.get_property("mini-player"))
		self.set_property("visible", visibility)
		self.back_to_current_album_button.set_property("visible", visibility)
		self.search_button.set_property("visible", visibility)

	def _on_icon_size_changed(self, *args):
		pixel_size=self._settings.get_int("icon-size-sec")
		for icon in self._icons.values():
			icon.set_pixel_size(pixel_size)

######################
# playlist and cover #
######################

class LyricsWindow(FocusFrame):
	def __init__(self, client, settings):
		super().__init__()

		# adding vars
		self._settings=settings
		self._client=client
		self._displayed_song_file=None

		# text view
		self._text_view=Gtk.TextView(
			editable=False,
			cursor_visible=False,
			wrap_mode=Gtk.WrapMode.WORD,
			justification=Gtk.Justification.CENTER,
			opacity=0.9
		)
		self._text_view.set_left_margin(5)
		self._text_view.set_right_margin(5)
		self._text_view.set_bottom_margin(5)
		self._text_view.set_top_margin(3)
		self.set_widget(self._text_view)

		# text buffer
		self._text_buffer=self._text_view.get_buffer()

		# scroll
		scroll=Gtk.ScrolledWindow()
		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
		scroll.add(self._text_view)

		# connect
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._song_changed=self._client.emitter.connect("current_song_changed", self._refresh)
		self._client.emitter.handler_block(self._song_changed)

		# packing
		self.add(scroll)

	def enable(self, *args):
		current_song=self._client.wrapped_call("currentsong")
		if current_song == {}:
			if self._displayed_song_file is not None:
				self._refresh()
		else:
			if current_song["file"] != self._displayed_song_file:
				self._refresh()
		self._client.emitter.handler_unblock(self._song_changed)
		GLib.idle_add(self._text_view.grab_focus)  # focus textview

	def disable(self, *args):
		self._client.emitter.handler_block(self._song_changed)

	def _get_lyrics(self, title, artist):
		replaces=((" ", "+"),(".", "_"),("@", "_"),(",", "_"),(";", "_"),("&", "_"),("\\", "_"),("/", "_"),('"', "_"),("(", "_"),(")", "_"))
		for char1, char2 in replaces:
			title=title.replace(char1, char2)
			artist=artist.replace(char1, char2)
		req=requests.get("https://www.letras.mus.br/winamp.php?musica={0}&artista={1}".format(title,artist))
		soup=BeautifulSoup(req.text, "html.parser")
		soup=soup.find(id="letra-cnt")
		if soup is None:
			raise ValueError("Not found")
		paragraphs=[i for i in soup.children][1]  # remove unneded paragraphs (NavigableString)
		lyrics=""
		for paragraph in paragraphs:
			for line in paragraph.stripped_strings:
				lyrics+=line+"\n"
			lyrics+="\n"
		output=lyrics[:-2]  # omit last two newlines
		if output == "":  # assume song is instrumental when lyrics are empty
			return "Instrumental"
		else:
			return output

	def _display_lyrics(self, current_song):
		GLib.idle_add(self._text_buffer.set_text, _("searching..."), -1)
		try:
			text=self._get_lyrics(current_song.get("title", ""), current_song.get("artist", ""))
		except requests.exceptions.ConnectionError:
			self._displayed_song_file=None
			text=_("connection error")
		except ValueError:
			text=_("lyrics not found")
		GLib.idle_add(self._text_buffer.set_text, text, -1)

	def _refresh(self, *args):
		current_song=self._client.wrapped_call("currentsong")
		if current_song == {}:
			self._displayed_song_file=None
			self._text_buffer.set_text("", -1)
		else:
			self._displayed_song_file=current_song["file"]
			update_thread=threading.Thread(
					target=self._display_lyrics,
					kwargs={"current_song": ClientHelper.song_to_first_str_dict(current_song)},
					daemon=True
			)
			update_thread.start()

	def _on_disconnected(self, *args):
		self._displayed_song_file=None
		self._text_buffer.set_text("", -1)

class AudioType(Gtk.Label):
	def __init__(self, client):
		super().__init__()

		# adding vars
		self._client=client
		self._init_vars()

		# connect
		self._client.emitter.connect("audio", self._on_audio)
		self._client.emitter.connect("bitrate", self._on_bitrate)
		self._client.emitter.connect("current_song_changed", self._on_song_changed)
		self._client.emitter.connect("disconnected", self.clear)
		self._client.emitter.connect("state", self._on_state)

	def clear(self, *args):
		self.set_text("")
		self._init_vars()

	def _init_vars(self):
		self.freq=0
		self.res=0
		self.chan=0
		self.brate=0
		self.file_type=""

	def _refresh(self, *args):
		string=_("{bitrate} kb/s, {frequency} kHz, {resolution} bit, {channels} channels, {file_type}").format(
			bitrate=self.brate, frequency=self.freq, resolution=self.res, channels=self.chan, file_type=self.file_type)
		self.set_text(string)

	def _on_audio(self, emitter, freq, res, chan):
		try:
			self.freq=str(int(freq)/1000)
		except:
			self.freq=freq
		self.res=res
		self.chan=chan
		self._refresh()

	def _on_bitrate(self, emitter, brate):
		self.brate=brate
		self._refresh()

	def _on_song_changed(self, *args):
		try:
			self.file_type=self._client.wrapped_call("currentsong")["file"].split(".")[-1]
			self._refresh()
		except:
			pass

	def _on_state(self, emitter, state):
		if state == "stop":
			self.clear()

class CoverEventBox(Gtk.EventBox):
	def __init__(self, client, settings, window):
		super().__init__()

		# adding vars
		self._client=client
		self._settings=settings
		self._window=window

		# connect
		self._button_press_event=self.connect("button-press-event", self._on_button_press_event)
		self._settings.connect("notify::mini-player", self._on_mini_player)

	def _on_button_press_event(self, widget, event):
		if self._client.connected():
			song=ClientHelper.song_to_first_str_dict(self._client.wrapped_call("currentsong"))
			if song != {}:
				try:
					artist=song[self._settings.get_artist_type()]
				except:
					artist=song.get("artist", "")
				album=song.get("album", "")
				album_year=song.get("date", "")
				if event.button == 1 and event.type == Gdk.EventType.BUTTON_PRESS:
					self._client.wrapped_call("album_to_playlist", album, artist, album_year)
				elif event.button == 2 and event.type == Gdk.EventType.BUTTON_PRESS:
					self._client.wrapped_call("album_to_playlist", album, artist, album_year, "append")
				elif event.button == 3 and event.type == Gdk.EventType.BUTTON_PRESS:
					album_dialog=AlbumDialog(self._window, self._client, self._settings, album, artist, album_year)
					album_dialog.open()
					album_dialog.destroy()

	def _on_mini_player(self, obj, typestring):
		if obj.get_property("mini-player"):
			self.handler_block(self._button_press_event)
		else:
			self.handler_unblock(self._button_press_event)

class MainCover(Gtk.Frame):
	def __init__(self, client, settings):
		super().__init__()

		# css
		style_context=self.get_style_context()
		provider=Gtk.CssProvider()
		css=b"""* {background-color: @theme_base_color; border-width: 0px}"""
		provider.load_from_data(css)
		style_context.add_provider(provider, 800)

		# adding vars
		self._client=client
		self._settings=settings

		# cover
		self._cover=Gtk.Image.new()
		size=self._settings.get_int("track-cover")
		self._cover.set_from_pixbuf(Cover(self._settings, {}).get_pixbuf(size))  # set to fallback cover
		# set default size
		self._cover.set_size_request(size, size)

		# connect
		self._client.emitter.connect("current_song_changed", self._refresh)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._settings.connect("changed::track-cover", self._on_settings_changed)

		self.add(self._cover)

	def _refresh(self, *args):
		current_song=self._client.wrapped_call("currentsong")
		self._cover.set_from_pixbuf(Cover(self._settings, current_song).get_pixbuf(self._settings.get_int("track-cover")))

	def _on_disconnected(self, *args):
		size=self._settings.get_int("track-cover")
		self._cover.set_from_pixbuf(Cover(self._settings, {}).get_pixbuf(size))
		self._cover.set_sensitive(False)

	def _on_reconnected(self, *args):
		self._cover.set_sensitive(True)

	def _on_settings_changed(self, *args):
		size=self._settings.get_int("track-cover")
		self._cover.set_size_request(size, size)
		self._refresh()

class PlaylistWindow(Gtk.Box):
	def __init__(self, client, settings):
		super().__init__(orientation=Gtk.Orientation.VERTICAL)

		# adding vars
		self._client=client
		self._settings=settings
		self._playlist_version=None
		self._icon_size=self._settings.get_int("icon-size-sec")

		# buttons
		self._icons={}
		icons_data=("go-previous-symbolic", "edit-clear-symbolic")
		for data in icons_data:
			self._icons[data]=PixelSizedIcon(data, self._icon_size)

		provider=Gtk.CssProvider()
		css=b"""* {min-height: 8px;}"""  # allow further shrinking
		provider.load_from_data(css)

		self._back_to_current_song_button=Gtk.Button(
			image=self._icons["go-previous-symbolic"],
			tooltip_text=_("Scroll to current song"),
			relief=Gtk.ReliefStyle.NONE
		)
		self._back_to_current_song_button.set_can_focus(False)
		style_context=self._back_to_current_song_button.get_style_context()
		style_context.add_provider(provider, 800)
		self._clear_button=Gtk.Button(
			image=self._icons["edit-clear-symbolic"],
			tooltip_text=_("Clear playlist"),
			relief=Gtk.ReliefStyle.NONE
		)
		self._clear_button.set_can_focus(False)
		style_context=self._clear_button.get_style_context()
		style_context.add_class("destructive-action")
		style_context.add_provider(provider, 800)

		# Store
		# (track, disc, title, artist, album, duration, date, genre, file, weight)
		self._store=Gtk.ListStore(str, str, str, str, str, str, str, str, str, Pango.Weight)

		# TreeView
		self._treeview=Gtk.TreeView(model=self._store, activate_on_single_click=True)
		self._treeview.set_search_column(2)

		# selection
		self._selection=self._treeview.get_selection()
		self._selection.set_mode(Gtk.SelectionMode.SINGLE)

		# Columns
		renderer_text=Gtk.CellRendererText(ellipsize=Pango.EllipsizeMode.END, ellipsize_set=True)
		renderer_text_ralign=Gtk.CellRendererText(xalign=1.0)
		self._columns=[None, None, None, None, None, None, None, None]

		self._columns[0]=Gtk.TreeViewColumn(_("No"), renderer_text_ralign, text=0, weight=9)
		self._columns[1]=Gtk.TreeViewColumn(_("Disc"), renderer_text_ralign, text=1, weight=9)
		self._columns[2]=Gtk.TreeViewColumn(_("Title"), renderer_text, text=2, weight=9)
		self._columns[3]=Gtk.TreeViewColumn(_("Artist"), renderer_text, text=3, weight=9)
		self._columns[4]=Gtk.TreeViewColumn(_("Album"), renderer_text, text=4, weight=9)
		self._columns[5]=Gtk.TreeViewColumn(_("Length"), renderer_text, text=5, weight=9)
		self._columns[6]=Gtk.TreeViewColumn(_("Year"), renderer_text, text=6, weight=9)
		self._columns[7]=Gtk.TreeViewColumn(_("Genre"), renderer_text, text=7, weight=9)

		for column in self._columns:
			column.set_property("resizable", True)
			column.set_min_width(30)

		self._load_settings()

		# scroll
		scroll=Gtk.ScrolledWindow()
		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
		scroll.add(self._treeview)

		# frame
		frame=FocusFrame()
		frame.set_widget(self._treeview)
		frame.add(scroll)

		# audio infos
		audio=AudioType(self._client)
		audio.set_xalign(1)
		audio.set_ellipsize(Pango.EllipsizeMode.END)

		# playlist info
		self._playlist_info=Gtk.Label(xalign=0, ellipsize=Pango.EllipsizeMode.END)

		# action bar
		action_bar=Gtk.ActionBar()
		action_bar.pack_start(self._back_to_current_song_button)
		self._playlist_info.set_margin_start(3)
		action_bar.pack_start(self._playlist_info)
		audio.set_margin_end(3)
		audio.set_margin_start(12)
		action_bar.pack_end(self._clear_button)
		action_bar.pack_end(audio)

		# connect
		self._treeview.connect("row-activated", self._on_row_activated)
		self._key_press_event=self._treeview.connect("key-press-event", self._on_key_press_event)
		self._treeview.connect("button-press-event", self._on_button_press_event)
		self._back_to_current_song_button.connect("clicked", self._on_back_to_current_song_button_clicked)
		self._clear_button.connect("clicked", self._on_clear_button_clicked)

		self._client.emitter.connect("playlist_changed", self._on_playlist_changed)
		self._client.emitter.connect("current_song_changed", self._on_song_changed)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)

		self._settings.connect("notify::mini-player", self._on_mini_player)
		self._settings.connect("changed::column-visibilities", self._load_settings)
		self._settings.connect("changed::column-permutation", self._load_settings)
		self._settings.connect("changed::icon-size-sec", self._on_icon_size_changed)

		# packing
		self.pack_start(frame, True, True, 0)
		self.pack_end(action_bar, False, False, 0)

	def save_settings(self):  # only saves the column sizes
		columns=self._treeview.get_columns()
		permutation=self._settings.get_value("column-permutation").unpack()
		sizes=[0] * len(permutation)
		for i in range(len(permutation)):
			sizes[permutation[i]]=columns[i].get_width()
		self._settings.set_value("column-sizes", GLib.Variant("ai", sizes))

	def _load_settings(self, *args):
		columns=self._treeview.get_columns()
		for column in columns:
			self._treeview.remove_column(column)
		sizes=self._settings.get_value("column-sizes").unpack()
		visibilities=self._settings.get_value("column-visibilities").unpack()
		for i in self._settings.get_value("column-permutation"):
			if sizes[i] > 0:
				self._columns[i].set_fixed_width(sizes[i])
			self._columns[i].set_visible(visibilities[i])
			self._treeview.append_column(self._columns[i])

	def _clear(self, *args):
		self._playlist_info.set_text("")
		self._store.clear()
		self._playlist_version=None

	def _refresh_playlist_info(self):
		songs=self._client.wrapped_call("playlistinfo")
		if songs == []:
			self._playlist_info.set_text("")
		else:
			length_human_readable=ClientHelper.calc_display_length(songs)
			self._playlist_info.set_text(_("{titles} titles ({length})").format(titles=len(songs), length=length_human_readable))

	def _scroll_to_selected_title(self, *args):
		treeview, treeiter=self._selection.get_selected()
		if treeiter is not None:
			path=treeview.get_path(treeiter)
			self._treeview.scroll_to_cell(path, None, True, 0.25)

	def _refresh_selection(self):  # Gtk.TreePath(len(self._store) is used to generate an invalid TreePath (needed to unset cursor)
		self._treeview.set_cursor(Gtk.TreePath(len(self._store)), None, False)
		for row in self._store:  # reset bold text
			row[9]=Pango.Weight.BOOK
		try:
			song=self._client.wrapped_call("status")["song"]
			path=Gtk.TreePath(int(song))
			self._selection.select_path(path)
			self._store[path][9]=Pango.Weight.BOLD
		except:
			self._selection.unselect_all()

	def _remove_song(self, path):
		self._client.wrapped_call("delete", path)  # bad song index possible
		self._store.remove(self._store.get_iter(path))
		self._playlist_version=self._client.wrapped_call("status")["playlist"]

	def _on_key_press_event(self, widget, event):
		self._treeview.handler_block(self._key_press_event)
		if event.keyval == Gdk.keyval_from_name("Delete"):
			treeview, treeiter=self._selection.get_selected()
			if treeiter is not None:
				path=self._store.get_path(treeiter)
				try:
					self._remove_song(path)
				except:
					pass
		elif event.keyval == Gdk.keyval_from_name("Menu"):
			treeview, treeiter=self._selection.get_selected()
			if treeiter is not None:
				path=self._store.get_path(treeiter)
				cell=self._treeview.get_cell_area(path, None)
				file_name=self._store[path][8]
				pop=SongPopover(self._client.wrapped_call("get_metadata", file_name), widget, int(cell.x), int(cell.y))
				pop.popup()
				pop.show_all()
		self._treeview.handler_unblock(self._key_press_event)

	def _on_button_press_event(self, widget, event):
		if event.button == 2 and event.type == Gdk.EventType.BUTTON_PRESS:
			try:
				path=widget.get_path_at_pos(int(event.x), int(event.y))[0]
				self._remove_song(path)
			except:
				pass
		elif event.button == 3 and event.type == Gdk.EventType.BUTTON_PRESS:
			try:
				path=widget.get_path_at_pos(int(event.x), int(event.y))[0]
				pop=SongPopover(self._client.wrapped_call("get_metadata", self._store[path][8]), widget, int(event.x), int(event.y))
				pop.popup()
			except:
				pass

	def _on_row_activated(self, widget, path, view_column):
		self._client.wrapped_call("play", path)

	def _on_playlist_changed(self, emitter, version):
		songs=[]
		if self._playlist_version is not None:
			songs=self._client.wrapped_call("plchanges", self._playlist_version)
		else:
			songs=self._client.wrapped_call("playlistinfo")
		if songs != []:
			self._playlist_info.set_text("")
			for s in songs:
				song=ClientHelper.extend_song_for_display(ClientHelper.song_to_str_dict(s))
				try:
					treeiter=self._store.get_iter(song["pos"])
					self._store.set(treeiter,
						0, song["track"],
						1, song["disc"],
						2, song["title"],
						3, song["artist"],
						4, song["album"],
						5, song["human_duration"],
						6, song["date"],
						7, song["genre"],
						8, song["file"],
						9, Pango.Weight.BOOK
					)
				except:
					self._store.append([
						song["track"], song["disc"],
						song["title"], song["artist"],
						song["album"], song["human_duration"],
						song["date"], song["genre"],
						song["file"], Pango.Weight.BOOK
					])
		for i in reversed(range(int(self._client.wrapped_call("status")["playlistlength"]), len(self._store))):
			treeiter=self._store.get_iter(i)
			self._store.remove(treeiter)
		self._refresh_playlist_info()
		if self._playlist_version is None or songs != []:
			self._refresh_selection()
			self._scroll_to_selected_title()
		self._playlist_version=version

	def _on_song_changed(self, *args):
		self._refresh_selection()
		if self._client.wrapped_call("status")["state"] == "play":
			self._scroll_to_selected_title()

	def _on_back_to_current_song_button_clicked(self, *args):
		self._treeview.set_cursor(Gtk.TreePath(len(self._store)), None, False)  # set to invalid TreePath (needed to unset cursor)
		for path, row in enumerate(self._store):
			if row[9] == Pango.Weight.BOLD:
				self._selection.select_path(path)
				break
		self._scroll_to_selected_title()

	def _on_clear_button_clicked(self, *args):
		self._client.clear()

	def _on_disconnected(self, *args):
		self._treeview.set_sensitive(False)
		self._clear()
		self._back_to_current_song_button.set_sensitive(False)
		self._clear_button.set_sensitive(False)

	def _on_reconnected(self, *args):
		self._back_to_current_song_button.set_sensitive(True)
		self._clear_button.set_sensitive(True)
		self._treeview.set_sensitive(True)

	def _on_mini_player(self, obj, typestring):
		visibility=not(obj.get_property("mini-player"))
		self.set_property("visible", visibility)

	def _on_icon_size_changed(self, *args):
		pixel_size=self._settings.get_int("icon-size-sec")
		for icon in self._icons.values():
			icon.set_pixel_size(pixel_size)

class CoverPlaylistWindow(Gtk.Paned):
	def __init__(self, client, settings, window):
		super().__init__()

		# adding vars
		self._client=client
		self._settings=settings
		self._window=window

		# cover
		main_cover=MainCover(self._client, self._settings)
		self._cover_event_box=CoverEventBox(self._client, self._settings, self._window)

		# playlist
		self._playlist_window=PlaylistWindow(self._client, self._settings)

		# lyrics button
		self.lyrics_button=Gtk.ToggleButton(
			image=Gtk.Image.new_from_icon_name("media-view-subtitles-symbolic", Gtk.IconSize.BUTTON),
			tooltip_text=_("Show lyrics")
		)
		self.lyrics_button.set_can_focus(False)
		self.lyrics_button.set_margin_top(6)
		self.lyrics_button.set_margin_end(6)
		style_context=self.lyrics_button.get_style_context()
		style_context.add_class("circular")

		# lyrics window
		self._lyrics_window=LyricsWindow(self._client, self._settings)

		# revealer
		self._lyrics_button_revealer=Gtk.Revealer()
		self._lyrics_button_revealer.set_halign(Gtk.Align.END)
		self._lyrics_button_revealer.set_valign(Gtk.Align.START)
		self._lyrics_button_revealer.add(self.lyrics_button)

		# stack
		self._stack=Gtk.Stack(transition_type=Gtk.StackTransitionType.CROSSFADE)
		self._stack.add_named(self._cover_event_box, "cover")
		self._stack.add_named(self._lyrics_window, "lyrics")
		self._stack.set_visible_child(self._cover_event_box)

		# connect
		self.lyrics_button.connect("toggled", self._on_lyrics_toggled)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._settings.connect("changed::show-lyrics-button", self._on_settings_changed)

		# packing
		overlay=Gtk.Overlay()
		overlay.add(main_cover)
		overlay.add_overlay(self._stack)
		overlay.add_overlay(self._lyrics_button_revealer)
		self.pack1(overlay, False, False)
		self.pack2(self._playlist_window, True, False)

		self.set_position(self._settings.get_int("paned0"))
		self._on_settings_changed()  # hide lyrics button

	def save_settings(self):
		self._settings.set_int("paned0", self.get_position())
		self._playlist_window.save_settings()

	def _on_reconnected(self, *args):
		self.lyrics_button.set_sensitive(True)

	def _on_disconnected(self, *args):
		self.lyrics_button.set_active(False)
		self.lyrics_button.set_sensitive(False)

	def _on_lyrics_toggled(self, widget):
		if widget.get_active():
			self._stack.set_visible_child(self._lyrics_window)
			self._lyrics_window.enable()
		else:
			self._stack.set_visible_child(self._cover_event_box)
			self._lyrics_window.disable()

	def _on_settings_changed(self, *args):
		if self._settings.get_boolean("show-lyrics-button"):
			self._lyrics_button_revealer.set_reveal_child(True)
		else:
			self._lyrics_button_revealer.set_reveal_child(False)

###################
# control widgets #
###################

class PlaybackControl(Gtk.ButtonBox):
	def __init__(self, client, settings):
		super().__init__(layout_style=Gtk.ButtonBoxStyle.EXPAND)

		# adding vars
		self._client=client
		self._settings=settings
		self._icon_size=self._settings.get_int("icon-size")

		# widgets
		self._icons={}
		icons_data=(
			"media-playback-start-symbolic", "media-playback-stop-symbolic",
			"media-playback-pause-symbolic", "media-skip-backward-symbolic",
			"media-skip-forward-symbolic"
		)
		for data in icons_data:
			self._icons[data]=PixelSizedIcon(data, self._icon_size)

		self._play_button=Gtk.Button(image=self._icons["media-playback-start-symbolic"])
		self._play_button.set_can_focus(False)
		self._stop_button=Gtk.Button(image=self._icons["media-playback-stop-symbolic"])
		self._stop_button.set_can_focus(False)
		self._prev_button=Gtk.Button(image=self._icons["media-skip-backward-symbolic"])
		self._prev_button.set_can_focus(False)
		self._next_button=Gtk.Button(image=self._icons["media-skip-forward-symbolic"])
		self._next_button.set_can_focus(False)

		# connect
		self._play_button.connect("clicked", self._on_play_clicked)
		self._stop_button.connect("clicked", self._on_stop_clicked)
		self._stop_button.set_property("no-show-all", not(self._settings.get_boolean("show-stop")))
		self._prev_button.connect("clicked", self._on_prev_clicked)
		self._next_button.connect("clicked", self._on_next_clicked)
		self._settings.connect("notify::mini-player", self._on_mini_player)
		self._settings.connect("changed::show-stop", self._on_show_stop_changed)
		self._settings.connect("changed::icon-size", self._on_icon_size_changed)
		self._client.emitter.connect("state", self._on_state)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)

		# packing
		self.pack_start(self._prev_button, True, True, 0)
		self.pack_start(self._play_button, True, True, 0)
		self.pack_start(self._stop_button, True, True, 0)
		self.pack_start(self._next_button, True, True, 0)

	def _on_play_clicked(self, widget):
		self._client.wrapped_call("toggle_play")

	def _on_stop_clicked(self, widget):
		self._client.wrapped_call("stop")

	def _on_prev_clicked(self, widget):
		self._client.wrapped_call("previous")

	def _on_next_clicked(self, widget):
		self._client.wrapped_call("next")

	def _on_state(self, emitter, state):
		if state == "play":
			self._play_button.set_image(self._icons["media-playback-pause-symbolic"])
			self._prev_button.set_sensitive(True)
			self._next_button.set_sensitive(True)
		elif state == "pause":
			self._play_button.set_image(self._icons["media-playback-start-symbolic"])
			self._prev_button.set_sensitive(True)
			self._next_button.set_sensitive(True)
		else:
			self._play_button.set_image(self._icons["media-playback-start-symbolic"])
			self._prev_button.set_sensitive(False)
			self._next_button.set_sensitive(False)

	def _on_disconnected(self, *args):
		self.set_sensitive(False)

	def _on_reconnected(self, *args):
		self.set_sensitive(True)

	def _on_mini_player(self, obj, typestring):
		self._on_show_stop_changed()

	def _on_show_stop_changed(self, *args):
		visibility=(self._settings.get_boolean("show-stop") and not self._settings.get_property("mini-player"))
		self._stop_button.set_property("visible", visibility)
		self._stop_button.set_property("no-show-all", not(visibility))

	def _on_icon_size_changed(self, *args):
		pixel_size=self._settings.get_int("icon-size")
		for icon in self._icons.values():
			icon.set_pixel_size(pixel_size)

class SeekBar(Gtk.Box):
	def __init__(self, client):
		super().__init__(hexpand=True)

		# adding vars
		self._client=client
		self._update=True
		self._jumped=False

		# labels
		self._elapsed=Gtk.Label(width_chars=5)
		self._rest=Gtk.Label(width_chars=6)

		# event boxes
		self._elapsed_event_box=Gtk.EventBox()
		self._rest_event_box=Gtk.EventBox()

		# progress bar
		self._scale=Gtk.Scale(orientation=Gtk.Orientation.HORIZONTAL)
		self._scale.set_can_focus(False)
		self._scale.set_show_fill_level(True)
		self._scale.set_restrict_to_fill_level(False)
		self._scale.set_draw_value(False)
		self._scale.set_increments(10, 60)
		self._adjustment=self._scale.get_adjustment()

		# css (scale)
		style_context=self._scale.get_style_context()
		provider=Gtk.CssProvider()
		css=b"""scale fill { background-color: @theme_selected_bg_color; }"""
		provider.load_from_data(css)
		style_context.add_provider(provider, 800)

		# connect
		self._elapsed_event_box.connect("button-release-event", self._on_elapsed_button_release_event)
		self._elapsed_event_box.connect("button-press-event", lambda *args: self._scale.grab_focus())
		self._rest_event_box.connect("button-release-event", self._on_rest_button_release_event)
		self._rest_event_box.connect("button-press-event", lambda *args: self._scale.grab_focus())
		self._scale.connect("change-value", self._on_change_value)
		self._scale.connect("scroll-event", lambda *args: True)  # disable mouse wheel
		self._scale.connect("button-press-event", self._on_scale_button_press_event)
		self._scale.connect("button-release-event", self._on_scale_button_release_event)
		self._client.emitter.connect("disconnected", self._disable)
		self._client.emitter.connect("state", self._on_state)
		self._client.emitter.connect("elapsed_changed", self._refresh)

		# packing
		self._elapsed_event_box.add(self._elapsed)
		self._rest_event_box.add(self._rest)
		self.pack_start(self._elapsed_event_box, False, False, 0)
		self.pack_start(self._scale, True, True, 0)
		self.pack_end(self._rest_event_box, False, False, 0)

	def _refresh(self, emitter, elapsed, duration):
		self.set_sensitive(True)
		if elapsed > duration:  # fix display error
			elapsed=duration
		self._adjustment.set_upper(duration)
		if self._update:
			self._scale.set_value(elapsed)
			self._elapsed.set_text(ClientHelper.seconds_to_display_time(int(elapsed)))
			self._rest.set_text("-"+ClientHelper.seconds_to_display_time(int(duration-elapsed)))
		self._scale.set_fill_level(elapsed)

	def _disable(self, *args):
		self.set_sensitive(False)
		self._scale.set_fill_level(0)
		self._scale.set_range(0, 0)
		self._elapsed.set_text("––∶––")
		self._rest.set_text("––∶––")

	def _on_scale_button_press_event(self, widget, event):
		if event.button == 1 and event.type == Gdk.EventType.BUTTON_PRESS:
			self._update=False
			self._scale.set_has_origin(False)
		if event.button == 3 and event.type == Gdk.EventType.BUTTON_PRESS:
			self._jumped=False

	def _on_scale_button_release_event(self, widget, event):
		if event.button == 1:
			self._update=True
			self._scale.set_has_origin(True)
			if self._jumped:  # actual seek
				self._client.wrapped_call("seekcur", self._scale.get_value())
				self._jumped=False
			else:  # restore state
				status=self._client.wrapped_call("status")
				self._refresh(None, float(status["elapsed"]), float(status["duration"]))

	def _on_change_value(self, range, scroll, value):  # value is inaccurate (can be above upper limit)
		if (scroll == Gtk.ScrollType.STEP_BACKWARD or scroll == Gtk.ScrollType.STEP_FORWARD or
			scroll == Gtk.ScrollType.PAGE_BACKWARD or scroll == Gtk.ScrollType.PAGE_FORWARD):
			self._client.wrapped_call("seekcur", value)
		elif scroll == Gtk.ScrollType.JUMP:
			duration=self._adjustment.get_upper()
			if value > duration:  # fix display error
				elapsed=duration
			else:
				elapsed=value
			self._elapsed.set_text(ClientHelper.seconds_to_display_time(int(elapsed)))
			self._rest.set_text("-"+ClientHelper.seconds_to_display_time(int(duration-elapsed)))
			self._jumped=True

	def _on_elapsed_button_release_event(self, widget, event):
		if event.button == 1:
			self._client.wrapped_call("seekcur", "-"+str(self._adjustment.get_property("step-increment")))
		elif event.button == 3:
			self._client.wrapped_call("seekcur", "+"+str(self._adjustment.get_property("step-increment")))

	def _on_rest_button_release_event(self, widget, event):
		if event.button == 1:
			self._client.wrapped_call("seekcur", "+"+str(self._adjustment.get_property("step-increment")))
		elif event.button == 3:
			self._client.wrapped_call("seekcur", "-"+str(self._adjustment.get_property("step-increment")))

	def _on_state(self, emitter, state):
		if state == "stop":
			self._disable()

class PlaybackOptions(Gtk.Box):
	def __init__(self, client, settings):
		super().__init__(spacing=6)

		# adding vars
		self._client=client
		self._settings=settings
		self._icon_size=self._settings.get_int("icon-size")

		# widgets
		self._icons={}
		icons_data=("media-playlist-shuffle-symbolic", "media-playlist-repeat-symbolic", "zoom-original-symbolic", "edit-cut-symbolic")
		for data in icons_data:
			self._icons[data]=PixelSizedIcon(data, self._icon_size)

		self._random_button=Gtk.ToggleButton(image=self._icons["media-playlist-shuffle-symbolic"], tooltip_text=_("Random mode"))
		self._random_button.set_can_focus(False)
		self._repeat_button=Gtk.ToggleButton(image=self._icons["media-playlist-repeat-symbolic"], tooltip_text=_("Repeat mode"))
		self._repeat_button.set_can_focus(False)
		self._single_button=Gtk.ToggleButton(image=self._icons["zoom-original-symbolic"], tooltip_text=_("Single mode"))
		self._single_button.set_can_focus(False)
		self._consume_button=Gtk.ToggleButton(image=self._icons["edit-cut-symbolic"], tooltip_text=_("Consume mode"))
		self._consume_button.set_can_focus(False)
		self._volume_button=Gtk.VolumeButton(use_symbolic=True, size=self._settings.get_gtk_icon_size("icon-size"))
		self._volume_button.set_can_focus(False)
		self._volume_button.set_sensitive(False)  # do not allow volume change by user when MPD has not yet reported volume
		adj=self._volume_button.get_adjustment()
		adj.set_step_increment(0.05)
		adj.set_page_increment(0.1)

		# connect
		self._random_button_toggled=self._random_button.connect("toggled", self._set_option, "random")
		self._repeat_button_toggled=self._repeat_button.connect("toggled", self._set_option, "repeat")
		self._single_button_toggled=self._single_button.connect("toggled", self._set_option, "single")
		self._consume_button_toggled=self._consume_button.connect("toggled", self._set_option, "consume")
		self._volume_button_changed=self._volume_button.connect("value-changed", self._set_volume)
		self._repeat_changed=self._client.emitter.connect("repeat", self._repeat_refresh)
		self._random_changed=self._client.emitter.connect("random", self._random_refresh)
		self._single_changed=self._client.emitter.connect("single", self._single_refresh)
		self._consume_changed=self._client.emitter.connect("consume", self._consume_refresh)
		self._volume_changed=self._client.emitter.connect("volume_changed", self._volume_refresh)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._settings.connect("notify::mini-player", self._on_mini_player)
		self._settings.connect("changed::icon-size", self._on_icon_size_changed)

		# packing
		self._button_box=Gtk.ButtonBox(layout_style=Gtk.ButtonBoxStyle.EXPAND)
		self._button_box.pack_start(self._repeat_button, True, True, 0)
		self._button_box.pack_start(self._random_button, True, True, 0)
		self._button_box.pack_start(self._single_button, True, True, 0)
		self._button_box.pack_start(self._consume_button, True, True, 0)
		self.pack_start(self._button_box, True, True, 0)
		self.pack_start(self._volume_button, True, True, 0)

	def _set_option(self, widget, option):
		if widget.get_active():
			self._client.wrapped_call(option, "1")
		else:
			self._client.wrapped_call(option, "0")

	def _set_volume(self, widget, value):
		self._client.wrapped_call("setvol", str(int(value*100)))

	def _repeat_refresh(self, emitter, val):
		self._repeat_button.handler_block(self._repeat_button_toggled)
		self._repeat_button.set_active(val)
		self._repeat_button.handler_unblock(self._repeat_button_toggled)

	def _random_refresh(self, emitter, val):
		self._random_button.handler_block(self._random_button_toggled)
		self._random_button.set_active(val)
		self._random_button.handler_unblock(self._random_button_toggled)

	def _single_refresh(self, emitter, val):
		self._single_button.handler_block(self._single_button_toggled)
		self._single_button.set_active(val)
		self._single_button.handler_unblock(self._single_button_toggled)

	def _consume_refresh(self, emitter, val):
		self._consume_button.handler_block(self._consume_button_toggled)
		self._consume_button.set_active(val)
		self._consume_button.handler_unblock(self._consume_button_toggled)

	def _volume_refresh(self, emitter, volume):
		self._volume_button.handler_block(self._volume_button_changed)
		if volume < 0:
			self._volume_button.set_sensitive(False)
			self._volume_button.set_value(0)
		else:
			self._volume_button.set_value(volume/100)
			self._volume_button.set_sensitive(True)
		self._volume_button.handler_unblock(self._volume_button_changed)

	def _on_reconnected(self, *args):
		self._repeat_button.set_sensitive(True)
		self._random_button.set_sensitive(True)
		self._single_button.set_sensitive(True)
		self._consume_button.set_sensitive(True)

	def _on_disconnected(self, *args):
		self._repeat_button.set_sensitive(False)
		self._random_button.set_sensitive(False)
		self._single_button.set_sensitive(False)
		self._consume_button.set_sensitive(False)
		self._repeat_refresh(None, False)
		self._random_refresh(None, False)
		self._single_refresh(None, False)
		self._consume_refresh(None, False)
		self._volume_refresh(None, -1)

	def _on_mini_player(self, obj, typestring):
		visibility=not(obj.get_property("mini-player"))
		self._button_box.set_property("visible", visibility)

	def _on_icon_size_changed(self, *args):
		pixel_size=self._settings.get_int("icon-size")
		for icon in self._icons.values():
			icon.set_pixel_size(pixel_size)
		self._volume_button.set_property("size", self._settings.get_gtk_icon_size("icon-size"))

###################
# MPD gio actions #
###################
class MPDActionGroup(Gio.SimpleActionGroup):
	def __init__(self, client):
		super().__init__()

		# adding vars
		self._client=client

		# actions
		self._simple_actions_data=(
			"toggle-play","stop","next","prev","seek-forward","seek-backward","clear","update",
			"repeat","random","single","consume"
		)
		for name in self._simple_actions_data:
			action=Gio.SimpleAction.new(name, None)
			action.connect("activate", getattr(self, ("_on_"+name.replace("-","_"))))
			self.add_action(action)

		# connect
		self._client.emitter.connect("state", self._on_state)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)

	def _on_toggle_play(self, action, param):
		self._client.wrapped_call("toggle_play")

	def _on_stop(self, action, param):
		self._client.wrapped_call("stop")

	def _on_next(self, action, param):
		self._client.wrapped_call("next")

	def _on_prev(self, action, param):
		self._client.wrapped_call("previous")

	def _on_seek_forward(self, action, param):
		self._client.wrapped_call("seekcur", "+10")

	def _on_seek_backward(self, action, param):
		self._client.wrapped_call("seekcur", "-10")

	def _on_clear(self, action, param):
		self._client.wrapped_call("clear")

	def _on_update(self, action, param):
		self._client.wrapped_call("update")

	def _on_repeat(self, action, param):
		self._client.wrapped_call("toggle_option", "repeat")

	def _on_random(self, action, param):
		self._client.wrapped_call("toggle_option", "random")

	def _on_single(self, action, param):
		self._client.wrapped_call("toggle_option", "single")

	def _on_consume(self, action, param):
		self._client.wrapped_call("toggle_option", "consume")

	def _on_state(self, emitter, state):
		state_dict={"play": True, "pause": True, "stop": False}
		for action in ("next","prev","seek-forward","seek-backward"):
			self.lookup_action(action).set_enabled(state_dict[state])

	def _on_disconnected(self, *args):
		for action in self._simple_actions_data:
			self.lookup_action(action).set_enabled(False)

	def _on_reconnected(self, *args):
		for action in self._simple_actions_data:
			self.lookup_action(action).set_enabled(True)

####################
# shortcuts window #
####################
class ShortcutsWindow(Gtk.ShortcutsWindow):
	def __init__(self):
		super().__init__()

		general_group=Gtk.ShortcutsGroup(title=_("General"), visible=True)
		window_group=Gtk.ShortcutsGroup(title=_("Window"), visible=True)
		playback_group=Gtk.ShortcutsGroup(title=_("Playback"), visible=True)
		items_group=Gtk.ShortcutsGroup(title=_("Search, Album Dialog and Album List"), visible=True)
		playlist_group=Gtk.ShortcutsGroup(title=_("Playlist"), visible=True)
		section=Gtk.ShortcutsSection(section_name="shortcuts", visible=True)
		section.add(general_group)
		section.add(window_group)
		section.add(playback_group)
		section.add(items_group)
		section.add(playlist_group)

		shortcut_data=(
			("F1", _("Open online help"), None, general_group),
			("<Control>question", _("Open shortcuts window"), None, general_group),
			("F10", _("Open menu"), None, general_group),
			("F5", _("Update database"), None, general_group),
			("<Control>q", _("Quit"), None, general_group),
			("<Control>p", _("Cycle through profiles"), None, window_group),
			("<Shift><Control>p", _("Cycle through profiles in reversed order"), None, window_group),
			("<Control>m", _("Toggle mini player"), None, window_group),
			("<Control>l", _("Toggle lyrics"), None, window_group),
			("<Control>f", _("Toggle search"), None, window_group),
			("Escape", _("Back to current album"), None, window_group),
			("space", _("Play/Pause"), None, playback_group),
			("<Control>space", _("Stop"), None, playback_group),
			("KP_Add", _("Next title"), None, playback_group),
			("KP_Subtract", _("Previous title"), None, playback_group),
			("KP_Multiply", _("Seek forward"), None, playback_group),
			("KP_Divide", _("Seek backward"), None, playback_group),
			("<Control>r", _("Toggle repeat mode"), None, playback_group),
			("<Control>s", _("Toggle random mode"), None, playback_group),
			("<Control>1", _("Toggle single mode"), None, playback_group),
			("<Control>o", _("Toggle consume mode"), None, playback_group),
			("p", _("Play selected item (next)"), _("Left-click"), items_group),
			("a", _("Append selected item"), _("Middle-click"), items_group),
			("Return", _("Play selected item immediately"), _("Double-click"), items_group),
			("Menu", _("Show additional information"), _("Right-click"), items_group),
			("Delete", _("Remove selected song"), _("Middle-click"), playlist_group),
			("<Shift>Delete", _("Clear playlist"), None, playlist_group),
			("Menu", _("Show additional information"), _("Right-click"), playlist_group)
		)
		for accel, title, subtitle, group in shortcut_data:
			shortcut=Gtk.ShortcutsShortcut(visible=True, accelerator=accel, title=title, subtitle=subtitle)
			group.pack_start(shortcut, False, False, 0)

		self.add(section)

###############
# main window #
###############

class ConnectionNotify(Gtk.Revealer):
	def __init__(self, client, settings):
		super().__init__(valign=Gtk.Align.START, halign=Gtk.Align.CENTER)

		# adding vars
		self._client=client
		self._settings=settings

		# widgets
		self._label=Gtk.Label(wrap=True)
		close_button=Gtk.Button(image=Gtk.Image.new_from_icon_name("window-close-symbolic", Gtk.IconSize.BUTTON))
		close_button.set_relief(Gtk.ReliefStyle.NONE)
		connect_button=Gtk.Button(label=_("Connect"))

		# connect
		close_button.connect("clicked", self._on_close_button_clicked)
		connect_button.connect("clicked", self._on_connect_button_clicked)
		self._client.emitter.connect("connection_error", self._on_connection_error)
		self._client.emitter.connect("reconnected", self._on_reconnected)

		# packing
		box=Gtk.Box(spacing=12)
		box.get_style_context().add_class("app-notification")
		box.pack_start(self._label, False, True, 6)
		box.pack_end(close_button, False, True, 0)
		box.pack_end(connect_button, False, True, 0)
		self.add(box)

	def _on_connection_error(self, *args):
		active=self._settings.get_int("active-profile")
		string=_("Connection to “{profile}” ({host}:{port}) failed").format(
			profile=self._settings.get_value("profiles")[active],
			host=self._settings.get_value("hosts")[active],
			port=self._settings.get_value("ports")[active]
		)
		self._label.set_text(string)
		self.set_reveal_child(True)

	def _on_reconnected(self, *args):
		self.set_reveal_child(False)

	def _on_close_button_clicked(self, *args):
		self.set_reveal_child(False)

	def _on_connect_button_clicked(self, *args):
		self._client.reconnect()

class MainWindow(Gtk.ApplicationWindow):
	def __init__(self, app, client, settings):
		super().__init__(title=("mpdevil"), icon_name="mpdevil", application=app)
		Notify.init("mpdevil")
		self.set_default_size(settings.get_int("width"), settings.get_int("height"))
		shortcuts_window=ShortcutsWindow()
		self.set_help_overlay(shortcuts_window)
		shortcuts_window.set_modal(False)

		# adding vars
		self._client=client
		self._settings=settings
		self._use_csd=self._settings.get_boolean("use-csd")
		if self._use_csd:
			self._icon_size=0
		else:
			self._icon_size=self._settings.get_int("icon-size")
		self._icons={"open-menu-symbolic": PixelSizedIcon("open-menu-symbolic", self._icon_size)}
		self._tmp_saved_size=None  # needed to restore size after leaving mini player mode
		self._tmp_saved_maximized=None  # needed to restore maximize state after leaving mini player mode

		# MPRIS
		dbus_service=MPRISInterface(self, self._client, self._settings)

		# actions
		simple_actions_data=(
			"save","settings","stats","help","menu",
			"toggle-lyrics","back-to-current-album","toggle-search",
			"profile-next","profile-prev"
		)
		for name in simple_actions_data:
			action=Gio.SimpleAction.new(name, None)
			action.connect("activate", getattr(self, ("_on_"+name.replace("-","_"))))
			self.add_action(action)
		mini_player_action=Gio.PropertyAction.new("mini-player", self._settings, "mini-player")
		self.add_action(mini_player_action)
		self._profiles_action=Gio.SimpleAction.new_stateful("profiles", GLib.VariantType.new("i"), GLib.Variant("i", 0))
		self._profiles_action.connect("change-state", self._on_profiles)
		self.add_action(self._profiles_action)
		self._mpd_action_group=MPDActionGroup(self._client)
		self.insert_action_group("mpd", self._mpd_action_group)

		# widgets
		self._browser=Browser(self._client, self._settings, self)
		self._cover_playlist_window=CoverPlaylistWindow(self._client, self._settings, self)
		playback_control=PlaybackControl(self._client, self._settings)
		seek_bar=SeekBar(self._client)
		playback_options=PlaybackOptions(self._client, self._settings)
		connection_notify=ConnectionNotify(self._client, self._settings)

		# menu
		subsection=Gio.Menu()
		subsection.append(_("Settings"), "win.settings")
		subsection.append(_("Keyboard shortcuts"), "win.show-help-overlay")
		subsection.append(_("Help"), "win.help")
		subsection.append(_("About"), "app.about")
		subsection.append(_("Quit"), "app.quit")
		mpd_subsection=Gio.Menu()
		mpd_subsection.append(_("Update database"), "mpd.update")
		mpd_subsection.append(_("Server stats"), "win.stats")
		self._profiles_submenu=Gio.Menu()
		self._refresh_profiles_menu()
		menu=Gio.Menu()
		menu.append_submenu(_("Profiles"), self._profiles_submenu)
		menu.append(_("Mini player"), "win.mini-player")
		menu.append(_("Save window layout"), "win.save")
		menu.append_section(None, mpd_subsection)
		menu.append_section(None, subsection)

		# menu button / popover
		self._menu_button=Gtk.MenuButton(image=self._icons["open-menu-symbolic"], tooltip_text=_("Menu"))
		self._menu_button.set_can_focus(False)
		menu_popover=Gtk.Popover.new_from_model(self._menu_button, menu)
		self._menu_button.set_popover(menu_popover)

		# action bar
		action_bar=Gtk.ActionBar()
		action_bar.pack_start(playback_control)
		action_bar.pack_start(seek_bar)
		action_bar.pack_start(playback_options)

		# connect
		self._settings.connect("changed::profiles", self._refresh_profiles_menu)
		self._settings.connect("changed::active-profile", self._on_active_profile_changed)
		self._settings.connect_after("notify::mini-player", self._on_mini_player)
		self._settings.connect("changed::playlist-right", self._on_playlist_pos_changed)
		if not self._use_csd:
			self._settings.connect("changed::icon-size", self._on_icon_size_changed)
		self._client.emitter.connect("current_song_changed", self._on_song_changed)
		self._client.emitter.connect("disconnected", self._on_disconnected)
		self._client.emitter.connect("reconnected", self._on_reconnected)
		self._browser.connect("search_focus_changed", self._on_search_focus_changed)

		# packing
		self._paned2=Gtk.Paned()
		self._paned2.set_position(self._settings.get_int("paned2"))
		self._on_playlist_pos_changed()  # set orientation
		self._paned2.pack1(self._browser, True, False)
		self._paned2.pack2(self._cover_playlist_window, False, False)
		vbox=Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
		vbox.pack_start(self._paned2, True, True, 0)
		vbox.pack_start(action_bar, False, False, 0)
		overlay=Gtk.Overlay()
		overlay.add(vbox)
		overlay.add_overlay(connection_notify)

		if self._use_csd:
			self._header_bar=Gtk.HeaderBar()
			self._header_bar.set_show_close_button(True)
			self.set_titlebar(self._header_bar)
			self._header_bar.pack_start(self._browser.back_to_current_album_button)
			self._header_bar.pack_end(self._menu_button)
			self._header_bar.pack_end(self._browser.search_button)
		else:
			action_bar.pack_start(Gtk.Separator.new(orientation=Gtk.Orientation.VERTICAL))
			action_bar.pack_start(self._menu_button)

		self.add(overlay)

		self.show_all()
		if self._settings.get_boolean("maximize"):
			self.maximize()
		self._client.start()  # connect client

	def _on_toggle_lyrics(self, action, param):
		self._cover_playlist_window.lyrics_button.set_active(not(self._cover_playlist_window.lyrics_button.get_active()))

	def _on_back_to_current_album(self, action, param):
		self._browser.back_to_current_album_button.emit("clicked")

	def _on_toggle_search(self, action, param):
		self._browser.search_button.set_active(not(self._browser.search_button.get_active()))

	def _on_save(self, action, param):
		size=self.get_size()
		self._settings.set_int("width", size[0])
		self._settings.set_int("height", size[1])
		self._settings.set_boolean("maximize", self.is_maximized())
		self._browser.save_settings()
		self._cover_playlist_window.save_settings()
		self._settings.set_int("paned2", self._paned2.get_position())

	def _on_settings(self, action, param):
		settings=SettingsDialog(self, self._client, self._settings)
		settings.run()
		settings.destroy()

	def _on_stats(self, action, param):
		stats=ServerStats(self, self._client, self._settings)
		stats.destroy()

	def _on_help(self, action, param):
		Gtk.show_uri_on_window(self, "https://github.com/SoongNoonien/mpdevil/wiki/Usage", Gdk.CURRENT_TIME)

	def _on_menu(self, action, param):
		self._menu_button.emit("clicked")

	def _on_profile_next(self, action, param):
		total_profiles=len(self._settings.get_value("profiles"))
		current_profile=self._settings.get_int("active-profile")
		self._settings.set_int("active-profile", (current_profile+1)%total_profiles)

	def _on_profile_prev(self, action, param):
		total_profiles=len(self._settings.get_value("profiles"))
		current_profile=self._settings.get_int("active-profile")
		self._settings.set_int("active-profile", (current_profile-1)%total_profiles)

	def _on_profiles(self, action, param):
		self._settings.set_int("active-profile", param.unpack())
		action.set_state(param)

	def _on_song_changed(self, *args):
		song=self._client.wrapped_call("currentsong")
		if song == {}:
			if self._use_csd:
				self.set_title("mpdevil")
				self._header_bar.set_subtitle("")
			else:
				self.set_title("mpdevil")
		else:
			song=ClientHelper.extend_song_for_display(ClientHelper.song_to_str_dict(song))
			if song["date"] == "":
				date=""
			else:
				date=" ("+song["date"]+")"
			if self._use_csd:
				self.set_title(song["title"]+" - "+song["artist"])
				self._header_bar.set_subtitle(song["album"]+date)
			else:
				self.set_title(song["title"]+" - "+song["artist"]+" - "+song["album"]+date)
			if self._settings.get_boolean("send-notify"):
				if not self.is_active() and self._client.wrapped_call("status")["state"] == "play":
					notify=Notify.Notification.new(song["title"], song["artist"]+"\n"+song["album"]+date)
					pixbuf=Cover(self._settings, song).get_pixbuf(400)
					notify.set_image_from_pixbuf(pixbuf)
					notify.show()

	def _on_reconnected(self, *args):
		for action in ("save","stats","toggle-lyrics","back-to-current-album","toggle-search"):
			self.lookup_action(action).set_enabled(True)

	def _on_disconnected(self, *args):
		self.set_title("mpdevil")
		if self._use_csd:
			self._header_bar.set_subtitle("")
		for action in ("save","stats","toggle-lyrics","back-to-current-album","toggle-search"):
			self.lookup_action(action).set_enabled(False)

	def _on_search_focus_changed(self, obj, focus):
		self._mpd_action_group.lookup_action("toggle-play").set_enabled(not(focus))

	def _on_mini_player(self, obj, typestring):
		if obj.get_property("mini-player"):
			self.lookup_action("save").set_enabled(False)
			self._tmp_saved_size=self.get_size()
			self._tmp_saved_miximized=self.is_maximized()
			if self._tmp_saved_miximized:
				self.unmaximize()
			self.resize(1,1)
		else:
			self.lookup_action("save").set_enabled(True)
			self.resize(self._tmp_saved_size[0], self._tmp_saved_size[1])
			if self._tmp_saved_miximized:
				self.maximize()
			self._tmp_saved_size=None
			self._tmp_saved_maximized=None

	def _on_playlist_pos_changed(self, *args):
		if self._settings.get_boolean("playlist-right"):
			self._cover_playlist_window.set_orientation(Gtk.Orientation.VERTICAL)
			self._paned2.set_orientation(Gtk.Orientation.HORIZONTAL)
		else:
			self._cover_playlist_window.set_orientation(Gtk.Orientation.HORIZONTAL)
			self._paned2.set_orientation(Gtk.Orientation.VERTICAL)

	def _refresh_profiles_menu(self, *args):
		self._profiles_submenu.remove_all()
		for num, profile in enumerate(self._settings.get_value("profiles")):
			item=Gio.MenuItem.new(profile, None)
			item.set_action_and_target_value("win.profiles", GLib.Variant("i", num))
			self._profiles_submenu.append_item(item)
		self._profiles_action.set_state(GLib.Variant("i", self._settings.get_int("active-profile")))

	def _on_active_profile_changed(self, *args):
		self._profiles_action.set_state(GLib.Variant("i", self._settings.get_int("active-profile")))

	def _on_icon_size_changed(self, *args):
		pixel_size=self._settings.get_int("icon-size")
		for icon in self._icons.values():
			icon.set_pixel_size(pixel_size)

###################
# Gtk application #
###################

class mpdevil(Gtk.Application):
	def __init__(self, *args, **kwargs):
		super().__init__(*args, application_id="org.mpdevil", flags=Gio.ApplicationFlags.FLAGS_NONE, **kwargs)
		self._settings=Settings()
		self._client=Client(self._settings)
		self._window=None

	def do_activate(self):
		if not self._window:  # allow just one instance
			self._window=MainWindow(self, self._client, self._settings)
			self._window.connect("delete-event", self._on_delete_event)
			# accelerators
			action_accels=(
				("app.quit", ["<Control>q"]),("win.mini-player", ["<Control>m"]),("win.help", ["F1"]),("win.menu", ["F10"]),
				("win.show-help-overlay", ["<Control>question"]),("win.toggle-lyrics", ["<Control>l"]),
				("win.back-to-current-album", ["Escape"]),("win.toggle-search", ["<control>f"]),
				("mpd.update", ["F5"]),("mpd.clear", ["<Shift>Delete"]),("mpd.toggle-play", ["space"]),
				("mpd.stop", ["<Control>space"]),("mpd.next", ["KP_Add"]),("mpd.prev", ["KP_Subtract"]),
				("mpd.repeat", ["<Control>r"]),("mpd.random", ["<Control>s"]),("mpd.single", ["<Control>1"]),
				("mpd.consume", ["<Control>o"]),("mpd.seek-forward", ["KP_Multiply"]),("mpd.seek-backward", ["KP_Divide"]),
				("win.profile-next", ["<Control>p"]),("win.profile-prev", ["<Shift><Control>p"])
			)
			for action, accels in action_accels:
				self.set_accels_for_action(action, accels)
		self._window.present()

	def do_startup(self):
		Gtk.Application.do_startup(self)

		action=Gio.SimpleAction.new("about", None)
		action.connect("activate", self._on_about)
		self.add_action(action)

		action=Gio.SimpleAction.new("quit", None)
		action.connect("activate", self._on_quit)
		self.add_action(action)

	def _on_delete_event(self, *args):
		if self._settings.get_boolean("stop-on-quit") and self._client.connected():
			self._client.wrapped_call("stop")
		self.quit()

	def _on_about(self, action, param):
		dialog=AboutDialog(self._window)
		dialog.run()
		dialog.destroy()

	def _on_quit(self, action, param):
		if self._settings.get_boolean("stop-on-quit") and self._client.connected():
			self._client.wrapped_call("stop")
		self.quit()

if __name__ == "__main__":
	app=mpdevil()
	app.run(sys.argv)