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annotate src/plugin_wid_widget_selector.py @ 14:21a432afd06d

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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 src/widget_selector.py@30f6586f904b
children
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client
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5 # Copyright (C) 2016 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 from sat.core import log as logging
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22 log = logging.getLogger(__name__)
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23 from sat.core.i18n import _
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24 from constants import Const as C
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25 from kivy.uix.boxlayout import BoxLayout
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26 from kivy.uix.listview import ListView
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27 from kivy.adapters.listadapter import ListAdapter
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28 from kivy import properties
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29 from kivy.uix.behaviors import ButtonBehavior
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30 from cagou_widget import CagouWidget
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33 PLUGIN_INFO = {
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34 "name": _(u"widget selector"),
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35 "import_name": C.WID_SELECTOR,
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36 "main": "WidgetSelector",
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37 "description": _(u"show available widgets and allow to select one"),
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38 }
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41 class WidgetSelItem(ButtonBehavior, BoxLayout):
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42 plugin_info = properties.DictProperty()
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44 def __init__(self, **kwargs):
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45 super(WidgetSelItem, self).__init__(**kwargs)
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46 self.host = kwargs['host']
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47
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48 def select(self, *args):
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49 log.debug(u"widget selection: {}".format(self.plugin_info["name"]))
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50 factory = self.plugin_info["factory"]
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51 self.host.switchWidget(self, factory(self.host, self.plugin_info, None, None))
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53 def deselect(self, *args):
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54 pass
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57 class WidgetSelector(CagouWidget):
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58
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59 def __init__(self, host):
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60 super(WidgetSelector, self).__init__(host)
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61 self.host = host
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62 self.adapter = ListAdapter(
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63 data=host.getPluggedWidgets(except_cls=self.__class__),
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64 cls=WidgetSelItem,
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65 args_converter=self.dataConverter,
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66 selection_mode='single',
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67 allow_empty_selection=True,
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68 )
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69 self.add_widget(ListView(adapter=self.adapter))
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70
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71 @classmethod
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72 def factory(cls, host, plugin_info, target, profiles):
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73 return cls(host)
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75 def dataConverter(self, idx, plugin_info):
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76 return {
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77 "host": self.host,
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78 "plugin_info": plugin_info,
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79 }
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82 PLUGIN_INFO["factory"] = WidgetSelector.factory