def tag_editing_vbox(self):
            """Returns a new VBox containing all tag editing widgets"""
            vbox = Gtk.VBox(spacing=6)
            cb = CCB(_("Auto-save tag changes"), 'editing',
                     'auto_save_changes', populate=True,
                     tooltip=_("Save changes to tags without confirmation "
                               "when editing multiple files"))
            vbox.pack_start(cb, False, True, 0)
            hb = Gtk.HBox(spacing=6)
            e = UndoEntry()
            e.set_text(config.get("editing", "split_on"))
            e.connect('changed', self.__changed, 'editing', 'split_on')
            e.set_tooltip_text(
                _("A list of separators to use when splitting tag values. "
                  "The list is space-separated"))

            def do_revert_split(button, section, option):
                config.reset(section, option)
                e.set_text(config.get(section, option))

            split_revert = Button(_("_Revert"), Icons.DOCUMENT_REVERT)
            split_revert.connect("clicked", do_revert_split, "editing",
                                 "split_on")
            l = Gtk.Label(label=_("Split _on:"))
            l.set_use_underline(True)
            l.set_mnemonic_widget(e)
            hb.pack_start(l, False, True, 0)
            hb.pack_start(e, True, True, 0)
            hb.pack_start(split_revert, False, True, 0)
            vbox.pack_start(hb, False, True, 0)
            return vbox

    def __init__(self):
        super(ScanBox, self).__init__(spacing=6)

        self.model = model = Gtk.ListStore(str)
        view = RCMHintedTreeView(model=model)
        view.set_fixed_height_mode(True)
        view.set_headers_visible(False)
        view.set_tooltip_text(_("Songs in the listed folders will be added "
                                "to the library during a library refresh"))
        menu = Gtk.Menu()
        remove_item = MenuItem(_("_Remove"), Icons.LIST_REMOVE)
        menu.append(remove_item)
        menu.show_all()
        view.connect('popup-menu', self.__popup, menu)
        connect_obj(remove_item, 'activate', self.__remove, view)

        sw = Gtk.ScrolledWindow()
        sw.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
        sw.set_shadow_type(Gtk.ShadowType.IN)
        sw.add(view)
        sw.set_size_request(-1, max(sw.size_request().height, 80))

        render = Gtk.CellRendererText()
        render.set_property('ellipsize', Pango.EllipsizeMode.END)

        def cdf(column, cell, model, iter, data):
            row = model[iter]
            cell.set_property('text', unexpand(row[0]))

        column = Gtk.TreeViewColumn(None, render)
        column.set_cell_data_func(render, cdf)
        column.set_sizing(Gtk.TreeViewColumnSizing.FIXED)
        view.append_column(column)

        add = Button(_("_Add"), Icons.LIST_ADD)
        add.connect("clicked", self.__add)
        remove = Button(_("_Remove"), Icons.LIST_REMOVE)

        selection = view.get_selection()
        selection.set_mode(Gtk.SelectionMode.MULTIPLE)
        selection.connect("changed", self.__select_changed, remove)
        selection.emit("changed")

        connect_obj(remove, "clicked", self.__remove, view)

        vbox = Gtk.VBox(spacing=6)
        vbox.pack_start(add, False, True, 0)
        vbox.pack_start(remove, False, True, 0)

        self.pack_start(sw, True, True, 0)
        self.pack_start(vbox, False, True, 0)

        paths = map(fsdecode, get_scan_dirs())
        for path in paths:
            model.append(row=[path])

        for child in self.get_children():
            child.show_all()

    def add_icon_button(self, label, icon_name, response_id):
        """Like add_button() but allows to pass an icon name"""

        button = Button(label, icon_name)
        # file chooser uses grab_default() on this
        button.set_can_default(True)
        button.show()
        self.add_action_widget(button, response_id)
        return button

    def __init__(self, parent):
        title = _("Uninitialized iPod")
        description = _("Do you want to create an empty database on this iPod?")

        super(ConfirmDBCreate, self).__init__(parent, title, description, buttons=Gtk.ButtonsType.NONE)

        self.add_button(_("_Cancel"), Gtk.ResponseType.CANCEL)
        save_button = Button(_("_Create Database"), "system-run")
        save_button.show()
        self.add_action_widget(save_button, self.RESPONSE_CREATE)
        self.set_default_response(Gtk.ResponseType.CANCEL)

    def __init__(self, filename=None, button=True, completion=None,
            accel_group=None):
        super(SearchBarBox, self).__init__(spacing=6)

        if filename is None:
            filename = os.path.join(const.USERDIR, "lists", "queries")

        combo = ComboBoxEntrySave(filename, count=8,
            validator=Query.is_valid_color, title=_("Saved Searches"),
            edit_title=_("Edit saved searches..."))
        combo.enable_clear_button()

        self.__refill_id = None
        self.__combo = combo
        entry = combo.child
        self.__entry = entry

        if completion:
            entry.set_completion(completion)

        self.connect('destroy', lambda w: w.__remove_timeout())

        self.__sig = combo.connect('changed', self.__text_changed)

        entry.connect('clear', self.__filter_changed)
        entry.connect('backspace', self.__text_changed)
        entry.connect('populate-popup', self.__menu)
        entry.connect('activate', self.__filter_changed)
        entry.connect('activate', self.__save_search)
        entry.connect('focus-out-event', self.__save_search)

        label = gtk.Label(_("_Search:"))
        label.set_use_underline(True)
        label.connect('mnemonic-activate', self.__mnemonic_activate)
        label.set_mnemonic_widget(entry)
        self.pack_start(label, expand=False)

        self.pack_start(combo)

        # search button
        if button:
            search = Button(_("Search"), gtk.STOCK_FIND,
                            size=gtk.ICON_SIZE_MENU)
            search.connect('clicked', self.__filter_changed)
            search.set_tooltip_text(_("Search your library"))
            self.pack_start(search, expand=False)

        if accel_group:
            key, mod = gtk.accelerator_parse("<ctrl>L")
            accel_group.connect_group(key, mod, 0,
                                      lambda *x: label.mnemonic_activate(True))

        self.show_all()

    def __init__(self, parent, failures):
        if self.is_not_unique():
            return
        super(PluginErrorWindow, self).__init__()

        self.set_title(_("Plugin Errors"))
        self.set_border_width(12)
        self.set_transient_for(parent)
        self.set_default_size(520, 300)

        scrolledwin = Gtk.ScrolledWindow()
        vbox = Gtk.VBox(spacing=6)
        vbox.set_border_width(6)
        scrolledwin.set_policy(Gtk.PolicyType.AUTOMATIC,
                               Gtk.PolicyType.AUTOMATIC)
        scrolledwin.add_with_viewport(vbox)

        keys = failures.keys()
        show_expanded = len(keys) <= 3
        for key in sorted(keys):
            expander = Gtk.Expander(label="<b>%s</b>" % util.escape(key))
            expander.set_use_markup(True)
            if show_expanded:
                expander.set_expanded(True)

            # second line is always the __rescan line; don't show it
            message = failures[key][0:1] + failures[key][3:]
            failure = Gtk.Label(label=''.join(message).strip())
            failure.set_alignment(0, 0)
            failure.set_padding(12, 6)
            failure.set_selectable(True)
            failure.set_line_wrap(True)

            vbox.pack_start(expander, False, True, 0)
            expander.add(failure)

        self.use_header_bar()

        if not self.has_close_button():
            vbox2 = Gtk.VBox(spacing=12)
            close = Button(_("_Close"), Icons.WINDOW_CLOSE)
            close.connect('clicked', lambda *x: self.destroy())
            b = Gtk.HButtonBox()
            b.set_layout(Gtk.ButtonBoxStyle.END)
            b.pack_start(close, True, True, 0)
            vbox2.pack_start(scrolledwin, True, True, 0)
            vbox2.pack_start(b, False, True, 0)
            self.add(vbox2)
            close.grab_focus()
        else:
            self.add(scrolledwin)

        self.get_child().show_all()

    def __init__(self, parent, path):
        title = _("File exists")
        fn_format = "<b>%s</b>" % util.escape(fsdecode(path))
        description = _("Replace %(file-name)s?") % {"file-name": fn_format}

        super(ConfirmFileReplace, self).__init__(
            parent, title, description, buttons=Gtk.ButtonsType.NONE)

        self.add_button(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
        save_button = Button(_("_Replace File"), "document-save")
        save_button.show()
        self.add_action_widget(save_button, self.RESPONSE_REPLACE)
        self.set_default_response(Gtk.ResponseType.CANCEL)

 def create_apply_button():
     vbox = Gtk.VBox(spacing=12)
     apply = Button(_("_Apply"))
     apply.set_tooltip_text(
         _("Apply current configuration to song list, "
           "adding new columns to the end"))
     apply.connect('clicked', self.__apply, buttons)
     # Apply on destroy, else config gets mangled
     self.connect('destroy', self.__apply, buttons)
     b = Gtk.HButtonBox()
     b.set_layout(Gtk.ButtonBoxStyle.END)
     b.pack_start(apply, True, True, 0)
     vbox.pack_start(b, True, True, 0)
     return vbox

    def __init__(self, browser):
        if self.is_not_unique():
            return
        super(Preferences, self).__init__()

        self.set_transient_for(qltk.get_top_parent(browser))
        self.set_default_size(350, 300)
        self.set_border_width(12)

        self.set_title(_("Paned Browser Preferences"))

        vbox = Gtk.VBox(spacing=12)

        column_modes = ColumnModes(browser)
        column_mode_frame = qltk.Frame(_("Column layout"), child=column_modes)

        editor = PatternEditor()
        editor.headers = get_headers()
        editor_frame = qltk.Frame(_("Column content"), child=editor)

        equal_width = ConfigCheckButton(_("Equal pane width"),
                                        "browsers",
                                        "equal_pane_width",
                                        populate=True)

        apply_ = Button(_("_Apply"))
        connect_obj(apply_, "clicked", self.__apply, editor,
                    browser, False, equal_width)

        cancel = Button(_("_Cancel"))
        cancel.connect("clicked", lambda x: self.destroy())

        box = Gtk.HButtonBox()
        box.set_spacing(6)
        box.set_layout(Gtk.ButtonBoxStyle.EDGE)
        box.pack_start(equal_width, True, True, 0)
        box.pack_start(apply_, False, False, 0)
        self.use_header_bar()
        if not self.has_close_button():
            box.pack_start(cancel, True, True, 0)

        vbox.pack_start(column_mode_frame, False, False, 0)
        vbox.pack_start(editor_frame, True, True, 0)
        vbox.pack_start(box, False, True, 0)

        self.add(vbox)

        cancel.grab_focus()
        self.get_child().show_all()

    def __init__(self, parent, plugin_name, count):
        title = ngettext("Run the plugin \"%(name)s\" on %(count)d album?",
                         "Run the plugin \"%(name)s\" on %(count)d albums?",
                         count) % (plugin_name, count)

        super(ConfirmMultiAlbumInvoke, self).__init__(
            get_top_parent(parent),
            title, "",
            buttons=Gtk.ButtonsType.NONE)

        self.add_button(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
        delete_button = Button(_("_Run Plugin"), Gtk.STOCK_EXECUTE)
        delete_button.show()
        self.add_action_widget(delete_button, self.RESPONSE_INVOKE)
        self.set_default_response(Gtk.ResponseType.CANCEL)

    def __init__(self, parent):
        title = _("Set up library directories?")
        description = _("You don't have any music library set up. "
                        "Would you like to do that now?")

        super(ConfirmLibDirSetup, self).__init__(
            parent, title, description, buttons=Gtk.ButtonsType.NONE)

        cancel_button = Button(_("_Not Now"), Gtk.STOCK_CANCEL)
        cancel_button.show()
        self.add_action_widget(cancel_button, Gtk.ResponseType.CANCEL)
        save_button = Gtk.Button(label=_("_Set Up"), use_underline=True)
        save_button.show()
        self.add_action_widget(save_button, self.RESPONSE_SETUP)
        self.set_default_response(Gtk.ResponseType.CANCEL)

    def __init__(self, parent, song):
        title = _("Tag may not be accurate")

        fn_format = "<b>%s</b>" % util.escape(fsdecode(song("~basename")))
        description = _("%(file-name)s changed while the program was running. "
            "Saving without refreshing your library may "
            "overwrite other changes to the song.") % {"file-name": fn_format}

        super(OverwriteWarning, self).__init__(
            parent, title, description, buttons=Gtk.ButtonsType.NONE)

        self.add_button(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
        save_button = Button(_("_Save"), "document-save")
        save_button.show()
        self.add_action_widget(save_button, self.RESPONSE_SAVE)
        self.set_default_response(Gtk.ResponseType.CANCEL)

    def __init__(self, library):
        super(AudioFeeds, self).__init__(spacing=6)
        self.set_orientation(Gtk.Orientation.VERTICAL)

        self.__view = view = AllTreeView()
        self.__render = render = Gtk.CellRendererText()
        render.set_property('ellipsize', Pango.EllipsizeMode.END)
        col = Gtk.TreeViewColumn("Audio Feeds", render)
        col.set_cell_data_func(render, AudioFeeds.cell_data)
        view.append_column(col)
        view.set_model(self.__feeds)
        view.set_rules_hint(True)
        view.set_headers_visible(False)
        swin = ScrolledWindow()
        swin.set_shadow_type(Gtk.ShadowType.IN)
        swin.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
        swin.add(view)
        self.pack_start(swin, True, True, 0)

        new = Button(_("_New"), Icons.LIST_ADD, Gtk.IconSize.MENU)
        new.connect('clicked', self.__new_feed)
        view.get_selection().connect('changed', self.__changed)
        view.get_selection().set_mode(Gtk.SelectionMode.MULTIPLE)
        view.connect('popup-menu', self.__popup_menu)

        targets = [
            ("text/uri-list", 0, DND_URI_LIST),
            ("text/x-moz-url", 0, DND_MOZ_URL)
        ]
        targets = [Gtk.TargetEntry.new(*t) for t in targets]

        view.drag_dest_set(Gtk.DestDefaults.ALL, targets, Gdk.DragAction.COPY)
        view.connect('drag-data-received', self.__drag_data_received)
        view.connect('drag-motion', self.__drag_motion)
        view.connect('drag-leave', self.__drag_leave)

        connect_obj(self, 'destroy', self.__save, view)

        self.pack_start(Align(new, left=3, bottom=3), False, True, 0)

        for child in self.get_children():
            child.show_all()

    def __init__(self, parent, paths, description):
        title = ngettext(
            "Delete %(file_count)d file permanently?",
            "Delete %(file_count)d files permanently?",
            len(paths)) % {
                "file_count": len(paths),
            }

        super(DeleteDialog, self).__init__(
            get_top_parent(parent),
            title, description,
            buttons=Gtk.ButtonsType.NONE)

        area = self.get_message_area()
        exp = FileListExpander(paths)
        exp.show()
        area.pack_start(exp, False, True, 0)

        self.add_button(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
        delete_button = Button(_("_Delete Files"), Gtk.STOCK_DELETE)
        delete_button.show()
        self.add_action_widget(delete_button, self.RESPONSE_DELETE)
        self.set_default_response(Gtk.ResponseType.CANCEL)

    def __init__(self, browser):
        if self.is_not_unique():
            return
        super(Preferences, self).__init__()

        self.set_transient_for(qltk.get_top_parent(browser))
        self.set_default_size(350, 300)
        self.set_border_width(12)

        self.set_title(_("Paned Browser Preferences"))

        vbox = Gtk.VBox(spacing=12)

        editor = PatternEditor()
        editor.headers = get_headers()

        apply_ = Button(_("_Apply"))
        connect_obj(apply_, "clicked", self.__apply, editor, browser, False)

        cancel = Button(_("_Cancel"))
        cancel.connect("clicked", lambda x: self.destroy())

        box = Gtk.HButtonBox()
        box.set_spacing(6)
        box.set_layout(Gtk.ButtonBoxStyle.END)
        box.pack_start(apply_, True, True, 0)
        self.use_header_bar()
        if not self.has_close_button():
            box.pack_start(cancel, True, True, 0)

        vbox.pack_start(editor, True, True, 0)
        vbox.pack_start(box, False, True, 0)

        self.add(vbox)

        cancel.grab_focus()
        self.get_child().show_all()

    def __init__(self, songs):
        super(AlbumArtWindow, self).__init__()

        self.image_cache = []
        self.image_cache_size = 10
        self.search_lock = False

        self.set_title(_('Album Art Downloader'))
        self.set_icon_name(Icons.EDIT_FIND)
        self.set_default_size(800, 550)

        image = CoverArea(self, songs[0])

        self.liststore = Gtk.ListStore(object, object)
        self.treeview = treeview = AllTreeView(model=self.liststore)
        self.treeview.set_headers_visible(False)
        self.treeview.set_rules_hint(True)

        targets = [("text/uri-list", 0, 0)]
        targets = [Gtk.TargetEntry.new(*t) for t in targets]

        treeview.drag_source_set(
            Gdk.ModifierType.BUTTON1_MASK, targets, Gdk.DragAction.COPY)

        treeselection = self.treeview.get_selection()
        treeselection.set_mode(Gtk.SelectionMode.SINGLE)
        treeselection.connect('changed', self.__select_callback, image)

        self.treeview.connect("drag-data-get",
            self.__drag_data_get, treeselection)

        rend_pix = Gtk.CellRendererPixbuf()
        img_col = Gtk.TreeViewColumn('Thumb')
        img_col.pack_start(rend_pix, False)

        def cell_data_pb(column, cell, model, iter_, *args):
            surface = model[iter_][0]
            cell.set_property("surface", surface)

        img_col.set_cell_data_func(rend_pix, cell_data_pb, None)
        treeview.append_column(img_col)

        rend_pix.set_property('xpad', 2)
        rend_pix.set_property('ypad', 2)
        border_width = self.get_scale_factor() * 2
        rend_pix.set_property('width', self.THUMB_SIZE + 4 + border_width)
        rend_pix.set_property('height', self.THUMB_SIZE + 4 + border_width)

        def escape_data(data):
            for rep in ('\n', '\t', '\r', '\v'):
                data = data.replace(rep, ' ')
            return util.escape(' '.join(data.split()))

        def cell_data(column, cell, model, iter, data):
            cover = model[iter][1]

            esc = escape_data

            txt = '<b><i>%s</i></b>' % esc(cover['name'])
            txt += "\n<small>%s</small>" % (
                _('from %(source)s') % {
                    "source": util.italic(esc(cover['source']))})
            if 'resolution' in cover:
                txt += "\n" + _('Resolution: %s') % util.italic(
                    esc(cover['resolution']))
            if 'size' in cover:
                txt += "\n" + _('Size: %s') % util.italic(esc(cover['size']))

            cell.markup = txt
            cell.set_property('markup', cell.markup)

        rend = Gtk.CellRendererText()
        rend.set_property('ellipsize', Pango.EllipsizeMode.END)
        info_col = Gtk.TreeViewColumn('Info', rend)
        info_col.set_cell_data_func(rend, cell_data)

        treeview.append_column(info_col)

        sw_list = Gtk.ScrolledWindow()
        sw_list.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
        sw_list.set_shadow_type(Gtk.ShadowType.IN)
        sw_list.add(treeview)

        search_labelraw = Gtk.Label('raw')
        search_labelraw.set_alignment(xalign=1.0, yalign=0.5)
        self.search_fieldraw = Gtk.Entry()
        self.search_fieldraw.connect('activate', self.start_search)
        self.search_fieldraw.connect('changed', self.__searchfieldchanged)
        search_labelclean = Gtk.Label('clean')
        search_labelclean.set_alignment(xalign=1.0, yalign=0.5)
        self.search_fieldclean = Gtk.Label()
        self.search_fieldclean.set_can_focus(False)
        self.search_fieldclean.set_alignment(xalign=0.0, yalign=0.5)

        self.search_radioraw = Gtk.RadioButton(group=None, label=None)
        self.search_radioraw.connect("toggled", self.__searchtypetoggled,
                                     "raw")
        self.search_radioclean = Gtk.RadioButton(group=self.search_radioraw,
                                                 label=None)
        self.search_radioclean.connect("toggled", self.__searchtypetoggled,
#.........这里部分代码省略.........

    def __init__(self, parent, library):
        super(EditTags, self).__init__(spacing=12)
        self.title = _("Edit Tags")
        self.set_border_width(12)

        model = ObjectStore()
        view = RCMHintedTreeView(model=model)
        self._view = view
        selection = view.get_selection()
        render = Gtk.CellRendererPixbuf()
        column = TreeViewColumn()
        column.pack_start(render, True)
        column.set_fixed_width(24)
        column.set_expand(False)

        def cdf_write(col, rend, model, iter_, *args):
            entry = model.get_value(iter_)
            rend.set_property('sensitive', entry.edited or entry.deleted)
            if entry.canedit or entry.deleted:
                if entry.deleted:
                    rend.set_property('icon-name', Icons.EDIT_DELETE)
                else:
                    rend.set_property('icon-name', Icons.EDIT)
            else:
                rend.set_property('icon-name', Icons.CHANGES_PREVENT)
        column.set_cell_data_func(render, cdf_write)
        view.append_column(column)

        render = Gtk.CellRendererText()
        column = TreeViewColumn(title=_('Tag'))
        column.pack_start(render, True)

        def cell_data_tag(column, cell, model, iter_, data):
            entry = model.get_value(iter_)
            cell.set_property("text", entry.tag)
            cell.set_property("strikethrough", entry.deleted)

        column.set_cell_data_func(render, cell_data_tag)

        column.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
        render.set_property('editable', True)
        render.connect('edited', self.__edit_tag_name, model)
        render.connect(
            'editing-started', self.__tag_editing_started, model, library)
        view.append_column(column)

        render = Gtk.CellRendererText()
        render.set_property('ellipsize', Pango.EllipsizeMode.END)
        render.set_property('editable', True)
        render.connect('edited', self.__edit_tag, model)
        render.connect(
            'editing-started', self.__value_editing_started, model, library)
        column = TreeViewColumn(title=_('Value'))
        column.pack_start(render, True)

        def cell_data_value(column, cell, model, iter_, data):
            entry = model.get_value(iter_)
            markup = entry.value.get_markup()
            cell.markup = markup
            cell.set_property("markup", markup)
            cell.set_property("editable", entry.canedit)
            cell.set_property("strikethrough", entry.deleted)

        column.set_cell_data_func(render, cell_data_value)

        column.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
        view.append_column(column)

        sw = Gtk.ScrolledWindow()
        sw.set_shadow_type(Gtk.ShadowType.IN)
        sw.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
        sw.add(view)
        self.pack_start(sw, True, True, 0)

        cb = ConfigCheckButton(
            _("Show _programmatic tags"), 'editing', 'alltags', populate=True,
            tooltip=_("Access all tags, including machine-generated "
                      "ones e.g. MusicBrainz or Replay Gain tags"))
        cb.connect('toggled', self.__all_tags_toggled)
        self.pack_start(cb, False, True, 0)

        # Add and Remove [tags] buttons
        buttonbox = Gtk.HBox(spacing=18)
        bbox1 = Gtk.HButtonBox()
        bbox1.set_spacing(6)
        bbox1.set_layout(Gtk.ButtonBoxStyle.START)
        add = qltk.Button(_("_Add"), Icons.LIST_ADD)
        add.set_focus_on_click(False)
        self._add = add
        add.connect('clicked', self.__add_tag, model, library)
        bbox1.pack_start(add, True, True, 0)
        # Remove button
        remove = qltk.Button(_("_Remove"), Icons.LIST_REMOVE)
        remove.set_focus_on_click(False)
        remove.connect('clicked', self.__remove_tag, view)
        remove.set_sensitive(False)
        self._remove = remove

        bbox1.pack_start(remove, True, True, 0)

#.........这里部分代码省略.........

    def __init__(self, library):
        super(MediaDevices, self).__init__(spacing=6)
        self.set_orientation(Gtk.Orientation.VERTICAL)
        self._register_instance()

        self.__cache = {}

        # Device list on the left pane
        swin = ScrolledWindow()
        swin.set_shadow_type(Gtk.ShadowType.IN)
        swin.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
        self.pack_start(swin, True, True, 0)

        self.__view = view = AllTreeView()
        view.set_model(self.__devices)
        view.set_rules_hint(True)
        view.set_headers_visible(False)
        view.get_selection().set_mode(Gtk.SelectionMode.BROWSE)
        connect_obj(view.get_selection(), 'changed', self.__refresh, False)
        view.connect('popup-menu', self.__popup_menu, library)
        view.connect('row-activated', lambda *a: self.songs_activated())
        swin.add(view)

        col = Gtk.TreeViewColumn("Devices")
        view.append_column(col)

        render = Gtk.CellRendererPixbuf()
        col.pack_start(render, False)
        col.add_attribute(render, 'icon-name', 1)

        self.__render = render = Gtk.CellRendererText()
        render.set_property('ellipsize', Pango.EllipsizeMode.END)
        render.connect('edited', self.__edited)
        col.pack_start(render, True)
        col.set_cell_data_func(render, MediaDevices.cell_data)

        hbox = Gtk.HBox(spacing=6)
        hbox.set_homogeneous(True)
        self.pack_start(Align(hbox, left=3, bottom=3), False, True, 0)

        # refresh button
        refresh = Button(_("_Refresh"), Gtk.STOCK_REFRESH, Gtk.IconSize.MENU)
        self.__refresh_button = refresh
        connect_obj(refresh, 'clicked', self.__refresh, True)
        refresh.set_sensitive(False)
        hbox.pack_start(refresh, True, True, 0)

        # eject button
        eject = Button(_("_Eject"), "media-eject", Gtk.IconSize.MENU)
        self.__eject_button = eject
        eject.connect('clicked', self.__eject)
        eject.set_sensitive(False)
        hbox.pack_start(eject, True, True, 0)

        # Device info on the right pane
        self.__header = table = Gtk.Table()
        table.set_col_spacings(8)

        self.__device_icon = icon = Gtk.Image()
        icon.set_size_request(48, 48)
        table.attach(icon, 0, 1, 0, 2, 0)

        self.__device_name = label = Gtk.Label()
        label.set_ellipsize(Pango.EllipsizeMode.END)
        label.set_alignment(0, 0)
        table.attach(label, 1, 3, 0, 1)

        self.__device_space = label = Gtk.Label()
        label.set_ellipsize(Pango.EllipsizeMode.END)
        label.set_alignment(0, 0.5)
        table.attach(label, 1, 2, 1, 2)

        self.__progress = progress = Gtk.ProgressBar()
        progress.set_size_request(150, -1)
        table.attach(progress, 2, 3, 1, 2, xoptions=0, yoptions=0)

        self.accelerators = Gtk.AccelGroup()
        key, mod = Gtk.accelerator_parse('F2')
        self.accelerators.connect(key, mod, 0, self.__rename)

        self.__statusbar = WaitLoadBar()

        for child in self.get_children():
            child.show_all()

    def __init__(self):
        super(PatternEditor, self).__init__(spacing=6)

        self.__headers = headers = {}
        buttons = []

        group = None
        for tags in self.PRESETS:
            tied = "~" + "~".join(tags)
            group = Gtk.RadioButton(group=group, label="_" + util.tag(tied),
                                    use_underline=True)
            headers[group] = tags
            buttons.append(group)

        group = Gtk.RadioButton(group=group, label=_("_Custom"),
                                use_underline=True)
        self.__custom = group
        headers[group] = []
        buttons.append(group)

        button_box = Gtk.HBox(spacing=6)
        self.__model = model = Gtk.ListStore(str)

        radio_box = Gtk.VBox(spacing=6)
        for button in buttons:
            radio_box.pack_start(button, False, True, 0)
            button.connect('toggled', self.__toggled, button_box, model)

        self.pack_start(radio_box, False, True, 0)

        tooltip = _("Tag pattern with optional markup "
                    "e.g. <tt>composer</tt> or\n<tt>%s</tt>"
                    % escape(self._COMPLEX_PATTERN_EXAMPLE))
        cb = TagsComboBoxEntry(self.COMPLETION, tooltip_markup=tooltip)

        view = BaseView(model=model)
        view.set_reorderable(True)
        view.set_headers_visible(False)

        ctrl_box = Gtk.VBox(spacing=6)

        add = Button(_("_Add"), Icons.LIST_ADD)
        ctrl_box.pack_start(add, False, True, 0)
        add.connect('clicked', self.__add, model, cb)

        remove = Button(_("_Remove"), Icons.LIST_REMOVE)
        ctrl_box.pack_start(remove, False, True, 0)
        remove.connect('clicked', self.__remove, view)

        selection = view.get_selection()
        selection.connect('changed', self.__selection_changed, remove)
        selection.emit('changed')

        sw = Gtk.ScrolledWindow()
        sw.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
        sw.set_shadow_type(Gtk.ShadowType.IN)
        sw.add(view)

        edit_box = Gtk.VBox(spacing=6)
        edit_box.pack_start(cb, False, True, 0)
        edit_box.pack_start(sw, True, True, 0)

        button_box.pack_start(edit_box, True, True, 0)
        button_box.pack_start(ctrl_box, False, True, 0)
        self.pack_start(button_box, True, True, 0)

        render = Gtk.CellRendererText()
        render.set_property("editable", True)

        def edited_cb(render, path, text, model):
            model[path][0] = text
        render.connect("edited", edited_cb, model)

        column = Gtk.TreeViewColumn(None, render, text=0)
        view.append_column(column)

        def __init__(self):
            super(PreferencesWindow.SongList, self).__init__(spacing=12)
            self.set_border_width(12)
            self.title = _("Song List")

            # Behaviour
            vbox = Gtk.VBox(spacing=6)
            c = CCB(_("_Jump to playing song automatically"),
                    'settings', 'jump', populate=True,
                    tooltip=_("When the playing song changes, "
                              "scroll to it in the song list"))
            vbox.pack_start(c, False, True, 0)
            frame = qltk.Frame(_("Behavior"), child=vbox)
            self.pack_start(frame, False, True, 0)

            # Columns
            vbox = Gtk.VBox(spacing=12)
            buttons = {}
            table = Gtk.Table.new(3, 3, True)

            for i, (k, t) in enumerate(self.PREDEFINED_TAGS):
                x, y = i % 3, i / 3
                buttons[k] = Gtk.CheckButton(label=t, use_underline=True)
                table.attach(buttons[k], x, x + 1, y, y + 1)
            vbox.pack_start(table, False, True, 0)

            # Other columns
            hbox = Gtk.HBox(spacing=6)
            l = Gtk.Label(label=_("_Others:"), use_underline=True)
            hbox.pack_start(l, False, True, 0)
            self.others = others = UndoEntry()
            others.set_sensitive(False)
            # Stock edit doesn't have ellipsis chars.
            edit_button = Gtk.Button(
                label=_(u"_Edit…"), use_underline=True)
            edit_button.connect("clicked", self.__config_cols, buttons)
            edit_button.set_tooltip_text(_("Add or remove additional column "
                                           "headers"))
            l.set_mnemonic_widget(edit_button)
            l.set_use_underline(True)
            hbox.pack_start(others, True, True, 0)
            vbox.pack_start(hbox, False, True, 0)
            b = Gtk.HButtonBox()
            b.set_layout(Gtk.ButtonBoxStyle.END)
            b.pack_start(edit_button, True, True, 0)
            vbox.pack_start(b, True, True, 0)

            frame = qltk.Frame(_("Visible Columns"), child=vbox)
            self.pack_start(frame, False, True, 0)

            # Column preferences
            tiv = Gtk.CheckButton(label=_("Title includes _version"),
                                  use_underline=True)
            aio = Gtk.CheckButton(label=_("Artist includes all _people"),
                                  use_underline=True)
            aip = Gtk.CheckButton(label=_("Album includes _disc subtitle"),
                                  use_underline=True)
            fip = Gtk.CheckButton(label=_("Filename includes _folder"),
                                  use_underline=True)
            self._toggle_data = [
                (tiv, "title", "~title~version"),
                (aip, "album", "~album~discsubtitle"),
                (fip, "~basename", "~filename"),
                (aio, "artist", "~people")
            ]

            self.__update(buttons, self._toggle_data, get_columns())

            t = Gtk.Table.new(2, 2, True)
            t.attach(tiv, 0, 1, 0, 1)
            t.attach(aip, 0, 1, 1, 2)
            t.attach(aio, 1, 2, 0, 1)
            t.attach(fip, 1, 2, 1, 2)
            frame = qltk.Frame(_("Column Preferences"), child=t)
            self.pack_start(frame, False, True, 0)

            # Apply button
            vbox = Gtk.VBox(spacing=12)
            apply = Button(_("_Apply"))
            apply.set_tooltip_text(_("Apply current configuration to song "
                                     "list, adding new columns to the end"))
            b = Gtk.HButtonBox()
            b.set_layout(Gtk.ButtonBoxStyle.END)
            b.pack_start(apply, True, True, 0)
            vbox.pack_start(b, True, True, 0)
            self.pack_start(vbox, True, True, 0)
            apply.connect('clicked', self.__apply, buttons)
            # Apply on destroy, else config gets mangled
            self.connect('destroy', self.__apply, buttons)

            for child in self.get_children():
                child.show_all()