view src/cagou_widget.py @ 14:21a432afd06d

plugin system, first draft: - widgets are now handled with plugins, ContactList and WidgetSelector have been changed to be pluggins - everything in PLUGIN_INFO (including PLUGIN_INFO itself) is optional. Best guess is used if a value is missing - WidgetsHandler use default widget from plugins, which is WidgetSelector for now - PLUGIN_INFO is used in the same way as for backed plugins, with (for now) following possible keys: - "name": human readable name - "description": long description of what widget do - "import_name": unique short name used as reference for import - "main": main class name - "factory": callback used to instanciate a widget (see Cagou._defaultFactory) - "kv_file": path to the kv language file to load (same filename with ".kv" will be used if key is not found) other data should be added quickly, as a path to a file used as icon - host.getPluggedWidgets can be used to find loaded widgets. except_cls can be used to excluse a class (self.__class__ usually) - fixed host.switchWidget when old widget is already a CagouWidget - CagouWidget header new display the available widgets
author Goffi <goffi@goffi.org>
date Sat, 09 Jul 2016 16:02:44 +0200
parents 8b2836b5b6c7
children
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#!/usr/bin/python
# -*- coding: utf-8 -*-

# Cagou: desktop/mobile frontend for Salut à Toi XMPP client
# Copyright (C) 2016 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


from sat.core import log as logging
log = logging.getLogger(__name__)
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.dropdown import DropDown


class HeaderWidgetButton(Button):
    pass


class HeaderWidgetSelector(DropDown):

    def __init__(self, cagou_widget):
        super(HeaderWidgetSelector, self).__init__()
        host = cagou_widget.host
        for plugin_info in host.getPluggedWidgets(except_cls=cagou_widget.__class__):
            btn = HeaderWidgetButton(text=plugin_info["name"])
            btn.bind(on_release=lambda btn, plugin_info=plugin_info: cagou_widget.switchWidget(plugin_info))
            self.add_widget(btn)


class CagouWidget(BoxLayout):

    def __init__(self, host):
        self.host = host
        BoxLayout.__init__(self, orientation="vertical")
        self.selector = HeaderWidgetSelector(self)

    def switchWidget(self, plugin_info):
        self.selector.dismiss()
        factory = plugin_info["factory"]
        new_widget = factory(self.host, plugin_info, None, None)
        self.host.switchWidget(self, new_widget)