class theme_installer(object):

    # plugin info
    module = "theme_installer"
    meta = plugin_meta()
    category = "themes"
    theme_dir = conf.dir + "/themes/"
#    themes_url = "http://milki.include-once.org/streamtuner2/themes/"
    themes_url = "http://oha59.bplaced.net/streamtuner2/themes/"
    themes_csv = "themes.json"
    mime = "zip/gtk-theme"
    parent = None
    bm = None

    # register
    def __init__(self, parent):

    def apply_theme(self, now=True):
        if conf.theme == "default":
            return
        # look if theme exists
        fn = "%s%s/%s" % (self.theme_dir, conf.theme, "gtk-2.0/gtkrc")
        if not os.path.exists(fn):
            return
        log.GTK_THEME_FILE("XYZ " + fn)
        # .GTKRC/Gtk2
        uikit.gtk.rc_parse_string("module_path \"%s:%s\"\n" % (uikit.gtk.rc_get_module_dir(), self.theme_dir))
        uikit.gtk.rc_parse(fn)
        uikit.gtk.rc_reset_styles(uikit.gtk.settings_get_for_screen(uikit.gtk.gdk.screen_get_default()))

    # download list of themes
    def update_streams(self, cat):

        for d in r:
            d["favicon"] = fi.row_to_fn(d)
            if not os.path.exists(d["favicon"]):
                fi.banner_localcopy(d["img"], d["favicon"], 64)
                log.COPY( d["img"], d["favicon"] )
        
        return r


    # invoked by action. module when encounterin a zip/gtk-theme links
    def install_handler(self, row, audioformat, source, assoc):
        if not "url" in row:
            return

        # download
        log.THEME_INSTALL(row["url"])
        zip = self.theme_dir + os.path.basename(row["url"])
        #if not os.path.exists(zip):
        with open(zip, "wb") as f:
            f.write(ahttp.get(row["url"], binary=True))
        # extract
        z = zipfile.ZipFile(zip)
        z.extractall(self.theme_dir)
        z.close()
        os.remove(zip)
        ls = z.namelist()
        dll = [fn for fn in ls if re.search("\w+\.(dll|so)$", fn)]
        base = [m.group(1) for fn in ls for m in [re.match("^([\w\s\-\.]+)/gtk-2.0/.+", fn)] if m]

        # move *.dll / *.so
        for gtk_dir in uikit.gtk.rc_get_module_dir().split(";" if conf.windows else ":"):
            if os.path.exists(gtk_dir) and os.access(gtk_dir, os.W_OK):
                for fn in dll:
                    if fn.find("/") > 0:  # create lib/engines/.../ if given
                        try: os.makedirs(self.theme_dir + os.path.basename(fn))
                        except: pass      # copy file
                    try:                
                        if shutil.copy(self.theme_dir + fn, gtk_dir):
                            break
                    except Exception as e:
                        log.THEME_INSTALL("Copy Gtk theme engine error ", e)
                        self.parent.status('<span background="orange">⛔ Set theme unsuccessful. - Check access rights!</span>', timeout=22, markup=1)
                        self.clear_theme(ls, dll)
                        return
            else:
                self.clear_theme(ls)
                return

        # enable
        if dll:
            self.clear_dll(dll)
            
        conf.theme = base[0]
        self.apply_theme(True)
        conf.save()

    # delete theme files if application failed
    def clear_theme(self, ls, dll):
        for fn in ls:
            try:
                shutil.rmtree(self.theme_dir + fn)
            except: pass # probably not found
        if dll:
            self.clear_dll(dll)

    # delete theme engine dll
    def clear_dll(self, dll):
        for fn in dll:
            os.remove(self.theme_dir + fn)