"search": [],
        "scripts": [],
        "timer": [],
        "history": []
    }
    default = "favourite"
    fixed_size = [32,24]
    reserved_names = ["favourite", "radiotray", "scripts", "search", "timer", "history", "links", "themes"] #+ self.parent.features.keys()


    # cache list, to determine if a PLS url is bookmarked
    urls = []

    def gui(self, parent):
        parent.notebook_channels.set_menu_label_text(parent.v_bookmarks, "bookmarks")
        self.update_categories()
        GenericChannel.gui(self, parent)
        uikit.tree_column(self.gtk_cat, "Group")

    # this channel does not actually retrieve/parse data from anywhere
    # custom categories are shown as subfolder below `favourite`
    def update_categories(self):
        pass
        cust_cats = list(set(self.streams.keys()) - set(self.reserved_names))
        if len(self.categories) < 2 or type(self.categories[1]) is not list:
            self.categories.insert(1, [])
        self.categories[1] = cust_cats
        
    # but category sub-plugins might provide a hook
    category_plugins = {}
    def update_streams(self, cat):

        if cat in self.category_plugins:
            return self.category_plugins[cat].update_streams(cat) or []
        else:
            return self.streams.get(cat, [])

        
    # streams are already loaded at instantiation

        if (not self.urls):
            self.urls = [str(row.get("url","urn:x-streamtuner2:no")) for row in self.streams["favourite"]]
        return str(url) in self.urls


    # called from main window / menu / context menu,
    # when bookmark is to be added for a selected stream entry
    def add(self, row):
    def add(self, row, target="favourite"):

        # Add / copy some row attributes
        row["favourite"] = 1
        if not row.get("favicon"):
            pass#   row["favicon"] = favicon.file(row.get("homepage"))
        if not row.get("listformat"):
            row["listformat"] = self.parent.channel().listformat
        if not len(row.get("extra", "")):
            row["extra"] = self.parent.channel().module

        # append to storage
        self.streams["favourite"].append(row)
        self.streams[target].append(row)
        self.save()
        self.load(self.default)
        self.urls.append(row["url"])


    # simplified gtk TreeStore display logic (just one category for the moment, always rebuilt)
    def load(self, category, force=False, y=None):

#!/usr/bin/env python
# encoding: UTF-8
# api: python
# type: application
# title: streamtuner2
# description: Directory browser for internet radio, audio and video streams
# version: 2.2.1-dev20180820
# version: 2.2.1-dev20181218
# state: stable
# author: Mario Salzer <mario@include-once.org>
# license: Public Domain
# url: http://freshcode.club/projects/streamtuner2
# config:  
#   { type: env, name: HTTP_PROXY, description: proxy for HTTP access }
#   { type: env, name: XDG_CONFIG_HOME, description: relocates user .config subdirectory }

    def on_category_clicked(self, widget, event, *more):
        category = self.channel().currentcat()
        log.UI("on_category_clicked", category, self.current_channel)
        self.on_reload_clicked(None, reload=0)
        pass

    # Add current selection to bookmark store
    def bookmark(self, widget):
        self.bookmarks.add(self.row())
    def bookmark(self, widget, target="favourite"):
        self.bookmarks.add(self.row(), target)
        self.channel().row_icon(gtk.STOCK_ABOUT)
        # refresh bookmarks tab
        self.bookmarks.load(self.bookmarks.default)

    # Reload category tree
    def update_categories(self, widget):
        self.thread(self.channel().reload_categories)