</child>
                        <child>
                          <object class="GtkToolButton" id="stop">
                            <property name="can_focus">False</property>
                            <property name="visible_horizontal">False</property>
                            <property name="label" translatable="yes">stop</property>
                            <property name="stock_id">gtk-cancel</property>
                            <signal name="clicked" handler="on_stop_clicked" swapped="no"/>
                          </object>
                          <packing>
                            <property name="expand">False</property>
                            <property name="homogeneous">True</property>
                          </packing>
                        </child>
                      </object>

            "on_notebook_channels_switch_page": self.channel_switch,   # channel notebook tab changed
            "station_context_menu": lambda tv,ev: self.station_context_menu(tv,ev),
            # toolbar
            "on_play_clicked" : self.on_play_clicked,
            "on_record_clicked": self.on_record_clicked,
            "on_homepage_stream_clicked": self.on_homepage_stream_clicked,
            "on_reload_clicked": self.on_reload_clicked,
            "on_stop_clicked": self.on_stop_clicked, #@TODO: button is long gone
            "on_homepage_channel_clicked" : self.on_homepage_channel_clicked,
            "double_click_channel_tab": self.on_homepage_channel_clicked,
            # menu
            "menu_toolbar_standard": lambda w: (self.toolbar.unset_style(), self.toolbar.unset_icon_size()),
            "menu_toolbar_style_icons": lambda w: (self.toolbar.set_style(gtk.TOOLBAR_ICONS)),
            "menu_toolbar_style_both": lambda w: (self.toolbar.set_style(gtk.TOOLBAR_BOTH)),
            "menu_toolbar_size_small": lambda w: (self.toolbar.set_icon_size(gtk.ICON_SIZE_SMALL_TOOLBAR)),

        else: self.status("No homepage URL present.")

    # Browse to channel homepage (double click on notebook tab)
    def on_homepage_channel_clicked(self, widget, event=2):
        if event == 2 or event.type == gtk.gdk._2BUTTON_PRESS:
            __print__(dbg.UI, "dblclick")
            url = self.channel().meta.get("url", "https://duckduckgo.com/?q=" + self.channel().module)
            self.action.browser(self.channel().url)

    # Reload stream list in current channel-category
    def on_reload_clicked(self, widget=None, reload=1):
        __print__(dbg.UI, "reload", reload, self.current_channel, self.channels[self.current_channel], self.channel().current)
        category = self.channel().current
        self.thread(
            lambda: (  self.channel().load(category,reload), reload and self.bookmarks.heuristic_update(self.current_channel,category)  )
        )

    # Thread a function, add to worker pool (for utilizing stop button)
    def thread(self, target, *args):
        thread = Thread(target=target, args=args)
        thread.start()
        self.working.append(thread)

    # Stop reload/update threads
    def on_stop_clicked(self, widget):
        __print__(dbg.ERR, "STOP is no longer available")
        #while self.working:
            #thread = self.working.pop()
            #thread.stop()

    # Click in category list
    def on_category_clicked(self, widget, event, *more):
        category = self.channel().currentcat()
        __print__(dbg.UI, "on_category_clicked", category, self.current_channel)
        self.on_reload_clicked(None, reload=0)
        pass

    # shortcut to statusbar
    # (hacked to work from within threads, circumvents the statusbar msg pool actually)
    def status(self, text="", sbar_msg=[]):
        __print__(dbg.ERR, "status(", text, ")")
        # init
        sbar_cid = self.get_widget("statusbar").get_context_id("messages")
        # remove text
        while ((not text) and (type(text)==str) and len(sbar_msg)):
            sbar_msg.pop()
            uikit.do(lambda:self.statusbar.pop(sbar_cid))
        # progressbar