def gui(self, parent):

        # save reference to main window/glade API
        self.parent = parent
        self.gtk_list = parent.get_widget(self.module+"_list")
        self.gtk_cat = parent.get_widget(self.module+"_cat")
        
        # last category, and prepare genre tree
        self.current = conf.state(self.module).get("current")
        self.display_categories()

        # update column names
        for field,title in list(self.titles.items()):
            self.update_datamap(field, title=title)
        
        # prepare stream list
        if (not self.rowmap):
            for row in self.datamap:

    def status(self, *v):
        if self.parent: self.parent.status(*v)
        else: log.INFO("status():", *v)


        
    #--------------------- streams/model data accesss ---------------------------

    # traverse category TreeModel to set current, expand parent nodes
    def select_current(self, name):
        log.UI("reselect .current category in treelist:", name)
        model = self.gtk_cat.get_model()
        iter = model.get_iter_first()
        self.iter_cats(name, model, iter)

    # iterate over children to find current category        
    def iter_cats(self, name, model, iter):
        while iter:
            val = model.get_value(iter, 0)
            if val == name:
                #log.UI("FOUND CATEGORY", name, "→select")
                self.gtk_cat.get_selection().select_iter(iter)
                self.gtk_cat.set_cursor(model.get_path(iter))
                return True
            if model.iter_has_child(iter):
                found = self.iter_cats(name, model, model.iter_children(iter))
                if found:
                    self.gtk_cat.expand_row(model.get_path(iter), 0)
                    return True
            iter = model.iter_next(iter)
        
    # selected category
    def currentcat(self):
        (model, iter) = self.gtk_cat.get_selection().get_selected()
        if (type(iter) == gtk.TreeIter):
            self.current = model.get_value(iter, 0)
        return self.current
        
    # Get list of stations in current category
    def stations(self):
        return self.streams.get(self.current, [])

    # Convert ListStore iter to row number
    def rowno(self):

            else:
                # parse error
                self.status("Category parsed empty.")
                self.streams[category] = self.nothing_found
                log.INFO("Oooops, parser returned nothing for category " + category)
                
        # Update treeview/model (if category is still selected)

        if self.current == category:
            log.UI("load() → uikit.columns({}.streams[{}])".format(self.module, category), [inspect.stack()[x][3] for x in range(1,5)])
            uikit.do(uikit.columns, self.gtk_list, self.datamap, self.prepare(self.streams[category]))
            if y:
                uikit.do(self.gtk_list.scroll_to_point, 0, y + 1)   # scroll to previous position, +1 px, because
                # somehow Gtk.TreeView else stumbles over itself when scrolling to the same position the 2nd time

        # unset statusbar
        self.status()


        
    # store current streams data
    def save(self):
        conf.save("cache/" + self.module, self.streams, gz=1)

            except:
                log.ERR("HTTP error or extraction failure.")
                self.categories = ["empty"]
            self.display_categories()

        # Select first category
        if not self.current:
            log.STAT(self.module, "→ first_show(); use first category as current =", self.current)
            self.current = self.str_from_struct(self.categories) or None

        # put selection/cursor on last position
        if True:
            uikit.do(self.select_current, self.current)
            #uikit.do(lambda:self.gtk_list.get_selection().select_path(self.shown))

        # Show current category in any case
        log.UI(self.module, "→ first_show(); station list → load(", self.current, ")")
        self.load(self.current)








            
        # Invoke only once
        self.shown = 55555


    # Retrieve first list value, or key from dict (-- used to get first category on init)
    def str_from_struct(self, d):

        # display outside of this non-main thread
        uikit.do(self.display_categories)


    # insert content into gtk category list
    def display_categories(self):
        log.UI("{}.display_categories(), uikit.tree(#{}), expand_all(#<20), select_current(={})".format(self.module, len(self.categories), self.current))
    
        # rebuild gtk.TreeView
        uikit.tree(self.gtk_cat, self.categories, title="Category", icon=gtk.STOCK_OPEN)

        # if it's a short list of categories, there's probably subfolders
        if len(self.categories) < 20:
            self.gtk_cat.expand_all()
            
        # Select last .current or any first element
        if self.current:
            self.select_current(self.current)
            #self.currentcat()
        #else: self.gtk_cat.get_selection().select_path("0") #set_cursor

            







    
    # Insert/append new station rows - used by importing/drag'n'drop plugins
    def insert_rows(self, rows, y=None):
        streams = self.streams[self.current]
        tv = self.gtk_list
        

                "type": "text/html",
            })

        # add to bookmarks
        parent.bookmarks.streams[self.module] = self.streams

        # redraw category
#        parent.bookmarks.reload_if_current(self.module)

        # 2.1.1
        if "audio/mp3" in self.play:
            self.play["audio/mpeg"] = self.play["audio/mp3"]
            del self.play["audio/mp3"]
        if self.tmp == "/tmp":
            self.tmp = "/tmp/streamtuner2"

            
    # Shortcut to `state.json` loading (currently selected categories etc.)
    def state(self, module=None, d={}):
        if not d:
            d.update(conf.load("state"))
        if module:
            return d.get(module, {})
        return d

         
    # check for existing filename in directory list
    def find_in_dirs(self, dirs, file):
        for d in dirs:
            if os.path.exists(d+"/"+file):
                return d+"/"+file

    def channel_switch(self, notebook, page, page_num=0, *args):
        self.current_channel = notebook.get_menu_label_text(notebook.get_nth_page(page_num))
        log.UI("main.channel_switch() :=", self.current_channel)
        self.update_title()
        # if first selected, load current category
        # (run in thread, to make it look speedy on first startup)
        self.thread( 
          self.channel().first_show
        )

    # Invoked from the menu instead, uses module name instead of numeric tab id
    def channel_switch_by_name(self, name):
        self.notebook_channels.set_current_page(self.channel_names.index(name))

    # Mirror selected channel tab into main window title

                
            except Exception as e:
                log.INIT("load_plugin_channels: error initializing:", name, ", exception:")
                traceback.print_exc()

    # load application state (widget sizes, selections, etc.)
    def init_app_state(self):

        winlayout = conf.load("window")
        if (winlayout):
            try: uikit.app_restore(self, winlayout)
            except Exception as e: log.APPSTATE_RESTORE(e) # may fail for disabled/reordered plugin channels

        #winstate = conf.state()    # now handled by channels.gui() already
        #if (winstate):
        #    for id,prev in winstate.items():
        #        try: self.channels[id].current = prev["current"]
        #        except Exception as e: log.APPSTATE_RESTORE(e)

    # store window/widget states (sizes, selections, etc.)
    def save_app_state(self, widget):
        # gtk widget states
        widgetnames = ["win_streamtuner2", "toolbar", "notebook_channels", ] \
                    + [id+"_list" for id in self.channel_names] \
                    + [id+"_cat" for id in self.channel_names]

                            col.set_fixed_width(args[i])
                #  - Rows
                if method == "rows:expanded":
                    w.collapse_all()
                    for i in args:
                        w.expand_row(treepath(i), False)
                #  - selected
              #  if method == "row:selected":
              #      w.get_selection().select_path(treepath(args))
                # gtk.Toolbar
                if method == "icon_size":
                    w.set_icon_size(args)
                if method == "style":
                    w.set_style(args)
                # gtk.Notebook
                if method == "tab_pos":