Mercurial > libervia-backend

annotate libervia/frontends/quick_frontend/quick_widgets.py @ 4270:0d7bb4df2343

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Reformatted code base using black.
author Goffi <goffi@goffi.org>
date Wed, 19 Jun 2024 18:44:57 +0200
parents 26b7ed2817da
children
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1 #!/usr/bin/env python3
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2
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4 # helper class for making a SAT frontend
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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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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19
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20 from libervia.backend.core.log import getLogger
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21
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22 log = getLogger(__name__)
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23 from libervia.backend.core import exceptions
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24 from libervia.frontends.quick_frontend.constants import Const as C
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27 classes_map = {}
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30 try:
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31 # FIXME: to be removed when an acceptable solution is here
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32 str("") # XXX: unicode doesn't exist in pyjamas
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33 except (
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34 TypeError,
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35 AttributeError,
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36 ): # Error raised is not the same depending on pyjsbuild options
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37 str = str
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40 def register(base_cls, child_cls=None):
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41 """Register a child class to use by default when a base class is needed
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43 @param base_cls: "Quick..." base class (like QuickChat or QuickContact), must inherit from QuickWidget
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44 @param child_cls: inherited class to use when Quick... class is requested, must inherit from base_cls.
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45 Can be None if it's the base_cls itself which register
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46 """
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47 # FIXME: we use base_cls.__name__ instead of base_cls directly because pyjamas because
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48 # in the second case
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49 classes_map[base_cls.__name__] = child_cls
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51
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52 class WidgetAlreadyExistsError(Exception):
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53 pass
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56 class QuickWidgetsManager(object):
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57 """This class is used to manage all the widgets of a frontend
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58 A widget can be a window, a graphical thing, or someting else depending of the frontend
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59 """
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60
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61 def __init__(self, host):
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62 self.host = host
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63 self._widgets = {}
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64
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65 def __iter__(self):
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66 """Iterate throught all widgets"""
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67 for widget_map in self._widgets.values():
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68 for widget_instances in widget_map.values():
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69 for widget in widget_instances:
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70 yield widget
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71
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72 def get_real_class(self, class_):
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73 """Return class registered for given class_
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74
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75 @param class_: subclass of QuickWidget
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76 @return: class actually used to create widget
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77 """
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78 try:
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79 # FIXME: we use base_cls.__name__ instead of base_cls directly because pyjamas bugs
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80 # in the second case
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81 cls = classes_map[class_.__name__]
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82 except KeyError:
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83 cls = class_
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84 if cls is None:
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85 raise exceptions.InternalError(
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86 "There is not class registered for {}".format(class_)
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87 )
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88 return cls
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89
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90 def get_widget_instances(self, widget):
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91 """Get all instance of a widget
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92
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93 This is a helper method which call get_widgets
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94 @param widget(QuickWidget): retrieve instances of this widget
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95 @return: iterator on widgets
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96 """
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97 return self.get_widgets(widget.__class__, widget.target, widget.profiles)
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98
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99 def get_widgets(self, class_, target=None, profiles=None, with_duplicates=True):
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100 """Get all subclassed widgets instances
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101
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102 @param class_: subclass of QuickWidget, same parameter as used in
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103 [get_or_create_widget]
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104 @param target: if not None, construct a hash with this target and filter
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105 corresponding widgets
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106 recreated widgets are handled
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107 @param profiles(iterable, None): if not None, filter on instances linked to these
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108 profiles
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109 @param with_duplicates(bool): if False, only first widget with a given hash is
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110 returned
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111 @return: iterator on widgets
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112 """
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113 class_ = self.get_real_class(class_)
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114 try:
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115 widgets_map = self._widgets[class_.__name__]
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116 except KeyError:
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117 return
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118 else:
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119 if target is not None:
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parents: 3479
diff changeset
120 filter_hash = str(class_.get_widget_hash(target, profiles))
2039
6353deb1bd73 quick frontend (quick_widget): getWidgets can now filter on hash (using target), handling recreated widgets too
Goffi <goffi@goffi.org>
parents: 2027
diff changeset
121 else:
6353deb1bd73 quick frontend (quick_widget): getWidgets can now filter on hash (using target), handling recreated widgets too
Goffi <goffi@goffi.org>
parents: 2027
diff changeset
122 filter_hash = None
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Goffi <goffi@goffi.org>
parents: 2851
diff changeset
123 if filter_hash is not None:
2888
e3803ae89fbc quick_frontend (widgets): fixed crash on getWidgets when target doesn't correspond to any widget
Goffi <goffi@goffi.org>
parents: 2855
diff changeset
124 for widget in widgets_map.get(filter_hash, []):
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
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parents: 2851
diff changeset
125 yield widget
3165
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parents: 3159
diff changeset
126 if not with_duplicates:
7699a08ba8fb quick frontend(widget): added `with_duplicates` argument to getWidgets:
Goffi <goffi@goffi.org>
parents: 3159
diff changeset
127 return
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
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parents: 2851
diff changeset
128 else:
3028
ab2696e34d29 Python 3 port:
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parents: 2888
diff changeset
129 for widget_instances in widgets_map.values():
2852
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diff changeset
130 for widget in widget_instances:
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
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parents: 2851
diff changeset
131 yield widget
3165
7699a08ba8fb quick frontend(widget): added `with_duplicates` argument to getWidgets:
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parents: 3159
diff changeset
132 if not with_duplicates:
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diff changeset
133 # widgets are set by hashes, so if don't want duplicates
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diff changeset
134 # we only return the first widget of the list
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diff changeset
135 break
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Goffi <goffi@goffi.org>
parents: 1265
diff changeset
136
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diff changeset
137 def get_widget(self, class_, target=None, profiles=None):
1349
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souliane <souliane@mailoo.org>
parents: 1322
diff changeset
138 """Get a widget without creating it if it doesn't exist.
273b044fde6d quick_frontend: add a method getWidget to return a widget without creating it if it doesn't exist
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parents: 1322
diff changeset
139
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diff changeset
140 if several instances of widgets with this hash exist, the first one is returned
4037
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diff changeset
141 @param class_: subclass of QuickWidget, same parameter as used in [get_or_create_widget]
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diff changeset
142 @param target: target depending of the widget, usually a JID instance
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
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parents: 1934
diff changeset
143 @param profiles (unicode, iterable[unicode], None): profile(s) to use (may or may not be
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
144 used, depending of the widget class)
1349
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souliane <souliane@mailoo.org>
parents: 1322
diff changeset
145 @return: a class_ instance or None if the widget doesn't exist
273b044fde6d quick_frontend: add a method getWidget to return a widget without creating it if it doesn't exist
souliane <souliane@mailoo.org>
parents: 1322
diff changeset
146 """
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
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diff changeset
147 assert (target is not None) or (profiles is not None)
3028
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Goffi <goffi@goffi.org>
parents: 2888
diff changeset
148 if profiles is not None and isinstance(profiles, str):
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
149 profiles = [profiles]
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diff changeset
150 class_ = self.get_real_class(class_)
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parents: 3479
diff changeset
151 hash_ = class_.get_widget_hash(target, profiles)
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souliane <souliane@mailoo.org>
parents: 1322
diff changeset
152 try:
2852
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diff changeset
153 return self._widgets[class_.__name__][hash_][0]
1349
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souliane <souliane@mailoo.org>
parents: 1322
diff changeset
154 except KeyError:
273b044fde6d quick_frontend: add a method getWidget to return a widget without creating it if it doesn't exist
souliane <souliane@mailoo.org>
parents: 1322
diff changeset
155 return None
273b044fde6d quick_frontend: add a method getWidget to return a widget without creating it if it doesn't exist
souliane <souliane@mailoo.org>
parents: 1322
diff changeset
156
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diff changeset
157 def get_or_create_widget(self, class_, target, *args, **kwargs):
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parents: 1139
diff changeset
158 """Get an existing widget or create a new one when necessary
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parents: 1139
diff changeset
159
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diff changeset
160 If the widget is new, self.host.new_widget will be called with it.
1265
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parents: 1139
diff changeset
161 @param class_(class): class of the widget to create
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
162 @param target: target depending of the widget, usually a JID instance
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
163 @param args(list): optional args to create a new instance of class_
1312
9e904f8a094e quick_frontend: getOrCreateWidget callbacks can return another widget
souliane <souliane@mailoo.org>
parents: 1310
diff changeset
164 @param kwargs(dict): optional kwargs to create a new instance of class_
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
165 if 'profile' key is present, it will be popped and put in 'profiles'
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
166 if there is neither 'profile' nor 'profiles', None will be used for 'profiles'
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
167 if 'on_new_widget' is present it can have the following values:
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
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parents: 3479
diff changeset
168 C.WIDGET_NEW [default]: self.host.new_widget will be called on widget creation
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
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parents: 3479
diff changeset
169 [callable]: this method will be called instead of self.host.new_widget
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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diff changeset
170 None: do nothing
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
171 if 'on_existing_widget' is present it can have the following values:
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
172 C.WIDGET_KEEP [default]: return the existing widget
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
173 C.WIDGET_RAISE: raise WidgetAlreadyExistsError
2852
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Goffi <goffi@goffi.org>
parents: 2851
diff changeset
174 C.WIDGET_RECREATE: create a new widget
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
175 if the existing widget has a "recreate_args" method, it will be called with args list and kwargs dict
2062
e22ab34c68f6 quick fronten (widgets): if a widget is recreated, "recreateArgs" method can be implemented to specify arguments to clone it correctly
Goffi <goffi@goffi.org>
parents: 2047
diff changeset
176 so the values can be completed to create correctly the new instance
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
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parents: 2851
diff changeset
177 [callable]: this method will be called with existing widget as argument, the widget to use must be returned
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
178 if 'force_hash' is present, the hash given in value will be used instead of the one returned by class_.get_widget_hash
1307
9512590dc3d7 quick_ frontend (quick widgets): added explanation in docstring for non special keywords in getOrCreateWidget
Goffi <goffi@goffi.org>
parents: 1304
diff changeset
179 other keys will be used to instanciate class_ if the case happen (e.g. if type_ is present and class_ is a QuickChat subclass,
9512590dc3d7 quick_ frontend (quick widgets): added explanation in docstring for non special keywords in getOrCreateWidget
Goffi <goffi@goffi.org>
parents: 1304
diff changeset
180 it will be used to create a new QuickChat instance).
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
181 @return: a class_ instance, either new or already existing
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
182 """
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
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parents: 3479
diff changeset
183 cls = self.get_real_class(class_)
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
184
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
185 ## arguments management ##
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
186 _args = [self.host, target] + list(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
187 args
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
188 ) or [] # FIXME: check if it's really necessary to use optional args
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
189 _kwargs = kwargs or {}
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
190 if "profiles" in _kwargs and "profile" in _kwargs:
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
191 raise ValueError(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
192 "You can't have 'profile' and 'profiles' keys at the same time"
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
193 )
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
194 try:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
195 _kwargs["profiles"] = [_kwargs.pop("profile")]
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
196 except KeyError:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
197 if not "profiles" in _kwargs:
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
198 _kwargs["profiles"] = None
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
199
2792
441b536e28ed quick frontend (chat): use right type in getOrCreateWidget on new message
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
200 # on_new_widget tells what to do for the new widget creation
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
201 try:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
202 on_new_widget = _kwargs.pop("on_new_widget")
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
203 except KeyError:
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
204 on_new_widget = C.WIDGET_NEW
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
205
2792
441b536e28ed quick frontend (chat): use right type in getOrCreateWidget on new message
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
206 # on_existing_widget tells what to do when the widget already exists
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
207 try:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
208 on_existing_widget = _kwargs.pop("on_existing_widget")
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
209 except KeyError:
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
210 on_existing_widget = C.WIDGET_KEEP
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
211
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
Goffi <goffi@goffi.org>
parents: 1290
diff changeset
212 ## we get the hash ##
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
213 try:
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parents: 2562
diff changeset
214 hash_ = _kwargs.pop("force_hash")
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
215 except KeyError:
4037
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parents: 3479
diff changeset
216 hash_ = cls.get_widget_hash(target, _kwargs["profiles"])
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
217
1304
1a61b18703c4 quick frontend (quick widgets): class' __name__ method is used for classes_map hash because the use of class directly was causing bugs with pyjamas (difficult to find, several MicroblogPanel instances were added only once in Libervia's TabPanel, hash method seemed buggy)
Goffi <goffi@goffi.org>
parents: 1303
diff changeset
218 ## widget creation or retrieval ##
1a61b18703c4 quick frontend (quick widgets): class' __name__ method is used for classes_map hash because the use of class directly was causing bugs with pyjamas (difficult to find, several MicroblogPanel instances were added only once in Libervia's TabPanel, hash method seemed buggy)
Goffi <goffi@goffi.org>
parents: 1303
diff changeset
219
2624
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parents: 2562
diff changeset
220 widgets_map = self._widgets.setdefault(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
221 cls.__name__, {}
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
222 ) # we sorts widgets by classes
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
223 if not cls.SINGLE:
2624
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parents: 2562
diff changeset
224 widget = None # if the class is not SINGLE, we always create a new widget
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
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parents: 1139
diff changeset
225 else:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
226 try:
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
227 widget = widgets_map[hash_][0]
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
228 except KeyError:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
229 widget = None
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
230 else:
4037
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parents: 3479
diff changeset
231 widget.add_target(target)
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232
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233 if widget is None:
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234 # we need to create a new widget
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235 log.debug(f"Creating new widget for target {target} {cls}")
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236 widget = cls(*_args, **_kwargs)
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237 widgets_map.setdefault(hash_, []).append(widget)
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238 self.host.call_listeners("widgetNew", widget)
0
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239
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240 if on_new_widget == C.WIDGET_NEW:
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241 self.host.new_widget(widget)
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242 elif callable(on_new_widget):
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243 on_new_widget(widget)
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244 else:
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245 assert on_new_widget is None
1301
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246 else:
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247 # the widget already exists
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248 if on_existing_widget == C.WIDGET_KEEP:
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249 pass
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250 elif on_existing_widget == C.WIDGET_RAISE:
1301
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251 raise WidgetAlreadyExistsError(hash_)
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252 elif on_existing_widget == C.WIDGET_RECREATE:
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253 try:
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254 recreate_args = widget.recreate_args
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255 except AttributeError:
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256 pass
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257 else:
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258 recreate_args(_args, _kwargs)
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259 widget = cls(*_args, **_kwargs)
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260 widgets_map[hash_].append(widget)
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261 log.debug(
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262 "widget <{wid}> already exists, a new one has been recreated".format(
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263 wid=widget
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264 )
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265 )
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266 elif callable(on_existing_widget):
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267 widget = on_existing_widget(widget)
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268 if widget is None:
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269 raise exceptions.InternalError(
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270 "on_existing_widget method must return the widget to use"
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271 )
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272 if widget not in widgets_map[hash_]:
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273 log.debug(
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274 "the widget returned by on_existing_widget is new, adding it"
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275 )
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276 widgets_map[hash_].append(widget)
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277 else:
2624
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278 raise exceptions.InternalError(
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279 "Unexpected on_existing_widget value ({})".format(on_existing_widget)
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280 )
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281
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282 return widget
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283
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284 def delete_widget(self, widget_to_delete, *args, **kwargs):
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285 """Delete a widget instance
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286
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287 this method must be called by frontends when a widget is deleted
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288 widget's on_delete method will be called before deletion, and deletion will be
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289 stopped if it returns False.
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290 @param widget_to_delete(QuickWidget): widget which need to deleted
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291 @param *args: extra arguments to pass to on_delete
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292 @param *kwargs: extra keywords arguments to pass to on_delete
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diff changeset
293 the extra arguments are not used by QuickFrontend, it's is up to
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294 the frontend to use them or not.
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diff changeset
295 following extra arguments are well known:
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296 - "all_instances" can be used as kwarg, if it evaluate to True,
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297 all instances of the widget will be deleted (if on_delete is
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298 not returning False for any of the instance). This arguments
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diff changeset
299 is not sent to on_delete methods.
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diff changeset
300 - "explicit_close" is used when the deletion is requested by
6032245c927e quick frontend (app): added "explicit_close" to deleteWidget, and use it on mucRoomLeftHandler:
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diff changeset
301 the user or a leave signal, "all_instances" is usually set at
6032245c927e quick frontend (app): added "explicit_close" to deleteWidget, and use it on mucRoomLeftHandler:
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diff changeset
302 the same time.
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diff changeset
303 """
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304 # TODO: all_instances must be independante kwargs, this is not possible with Python 2
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305 # but will be with Python 3
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306 all_instances = kwargs.get("all_instances", False)
2853
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diff changeset
307
6901a425d882 quick frontend (widgets): improved deletion of widget:
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diff changeset
308 if all_instances:
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diff changeset
309 for w in self.get_widget_instances(widget_to_delete):
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diff changeset
310 if w.on_delete(**kwargs) == False:
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328a6cea3802 quick frontend (widgets): don't use *args for onDelete + more debug logs
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diff changeset
311 log.debug(
4270
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312 f"Deletion of {widget_to_delete} cancelled by widget itself"
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diff changeset
313 )
2853
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diff changeset
314 return
6901a425d882 quick frontend (widgets): improved deletion of widget:
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diff changeset
315 else:
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diff changeset
316 if widget_to_delete.on_delete(**kwargs) == False:
3116
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diff changeset
317 log.debug(f"Deletion of {widget_to_delete} cancelled by widget itself")
2853
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diff changeset
318 return
2043
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Goffi <goffi@goffi.org>
parents: 2039
diff changeset
319
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
Goffi <goffi@goffi.org>
parents: 2039
diff changeset
320 if self.host.selected_widget == widget_to_delete:
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
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parents: 2039
diff changeset
321 self.host.selected_widget = None
1303
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diff changeset
322
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diff changeset
323 class_ = self.get_real_class(widget_to_delete.__class__)
2853
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diff changeset
324 try:
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diff changeset
325 widgets_map = self._widgets[class_.__name__]
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diff changeset
326 except KeyError:
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diff changeset
327 log.error("no widgets_map found for class {cls}".format(cls=class_))
2853
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diff changeset
328 return
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diff changeset
329 widget_hash = str(
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diff changeset
330 class_.get_widget_hash(widget_to_delete.target, widget_to_delete.profiles)
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diff changeset
331 )
3115
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diff changeset
332 try:
3018d153a615 quick frontend (widgets): some more errors handling in getOrCreateWidget
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diff changeset
333 widget_instances = widgets_map[widget_hash]
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diff changeset
334 except KeyError:
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diff changeset
335 log.error(f"no instance of {class_.__name__} found with hash {widget_hash!r}")
3018d153a615 quick frontend (widgets): some more errors handling in getOrCreateWidget
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diff changeset
336 return
2853
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diff changeset
337 if all_instances:
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diff changeset
338 widget_instances.clear()
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diff changeset
339 else:
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parents: 2852
diff changeset
340 try:
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diff changeset
341 widget_instances.remove(widget_to_delete)
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diff changeset
342 except ValueError:
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diff changeset
343 log.error("widget_to_delete not found in widget instances")
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diff changeset
344 return
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345
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346 log.debug("widget {} deleted".format(widget_to_delete))
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347
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diff changeset
348 if not widget_instances:
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349 # all instances with this hash have been deleted
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350 # we remove the hash itself
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351 del widgets_map[widget_hash]
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352 log.debug(
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353 "All instances of {cls} with hash {widget_hash!r} have been deleted".format(
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diff changeset
354 cls=class_, widget_hash=widget_hash
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parents: 4074
diff changeset
355 )
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diff changeset
356 )
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357 self.host.call_listeners("widgetDeleted", widget_to_delete)
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358
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359
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360 class QuickWidget(object):
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361 """generic widget base"""
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362
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363 # FIXME: sometime a single target is used, sometimes several ones
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364 # This should be sorted out in the same way as for profiles: a single
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365 # target should be possible when appropriate attribute is set.
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366 # methods using target(s) and hash should be fixed accordingly
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367
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368 SINGLE = True # if True, there can be only one widget per target(s)
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369 PROFILES_MULTIPLE = False # If True, this widget can handle several profiles at once
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370 PROFILES_ALLOW_NONE = False # If True, this widget can be used without profile
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371
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372 def __init__(self, host, target, profiles=None):
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373 """
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374 @param host: %(doc_host)s
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375 @param target: target specific for this widget class
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376 @param profiles: can be either:
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377 - (unicode): used when widget class manage a unique profile
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378 - (iterable): some widget class can manage several profiles, several at once can be specified here
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379 - None: no profile is managed by this widget class (rare)
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380 @raise: ValueError when (iterable) or None is given to profiles for a widget class which manage one unique profile.
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381 """
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382 self.host = host
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383 self.targets = set()
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384 self.add_target(target)
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385 self.profiles = set()
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386 self._sync = True
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387 if isinstance(profiles, str):
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388 self.add_profile(profiles)
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389 elif profiles is None:
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390 if not self.PROFILES_ALLOW_NONE:
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391 raise ValueError("profiles can't have a value of None")
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392 else:
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393 for profile in profiles:
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394 self.add_profile(profile)
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395 if not self.profiles:
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396 raise ValueError("no profile found, use None for no profile classes")
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397
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398 @property
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399 def profile(self):
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400 assert (
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401 len(self.profiles) == 1
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402 and not self.PROFILES_MULTIPLE
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403 and not self.PROFILES_ALLOW_NONE
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404 )
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405 return list(self.profiles)[0]
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406
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407 @property
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408 def target(self):
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409 """Return main target
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410
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411 A random target is returned when several targets are available
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412 """
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413 return next(iter(self.targets))
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414
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415 @property
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416 def widget_hash(self):
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417 """Return quick widget hash"""
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418 return self.get_widget_hash(self.target, self.profiles)
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419
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420 # synchronisation state
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421
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422 @property
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423 def sync(self):
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424 return self._sync
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425
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426 @sync.setter
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427 def sync(self, state):
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428 """state of synchronisation with backend
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429
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430 @param state(bool): True when backend is synchronised
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431 False is set by core
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432 True must be set by the widget when resynchronisation is finished
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433 """
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434 self._sync = state
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435
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436 def resync(self):
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437 """Method called when backend can be resynchronized
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438
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439 The widget has to set self.sync itself when the synchronisation is finished
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440 """
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441 pass
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442
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443 # target/profile
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444
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445 def add_target(self, target):
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446 """Add a target if it doesn't already exists
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447
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448 @param target: target to add
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449 """
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450 self.targets.add(target)
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451
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452 def add_profile(self, profile):
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453 """Add a profile is if doesn't already exists
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454
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455 @param profile: profile to add
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456 """
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457 if self.profiles and not self.PROFILES_MULTIPLE:
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458 raise ValueError("multiple profiles are not allowed")
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459 self.profiles.add(profile)
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460
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461 # widget identitication
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462
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463 @staticmethod
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464 def get_widget_hash(target, profiles):
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465 """Return the hash associated with this target for this widget class
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466
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467 some widget classes can manage several target on the same instance
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468 (e.g.: a chat widget with multiple resources on the same bare jid),
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469 this method allow to return a hash associated to one or several targets
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470 to retrieve the good instance. For example, a widget managing JID targets,
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471 and all resource of the same bare jid would return the bare jid as hash.
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472
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473 @param target: target to check
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474 @param profiles: profile(s) associated to target, see __init__ docstring
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475 @return: a hash (can correspond to one or many targets or profiles, depending of widget class)
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476 """
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2888
diff changeset
477 return str(target) # by defaut, there is one hash for one target
1303
d3ef3894254d quick frontend (quick_widgets): add deleteWidget method
Goffi <goffi@goffi.org>
parents: 1301
diff changeset
478
2851
7764383a968c quick_frontend (widget, chat): implementation of new sync mechanism, first draft:
Goffi <goffi@goffi.org>
parents: 2845
diff changeset
479 # widget life events
7764383a968c quick_frontend (widget, chat): implementation of new sync mechanism, first draft:
Goffi <goffi@goffi.org>
parents: 2845
diff changeset
480
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
481 def on_delete(self, *args, **kwargs):
2043
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
Goffi <goffi@goffi.org>
parents: 2039
diff changeset
482 """Called when a widget is being deleted
1410
e2e75c3c7c7b quick_frontend, primitivus: fixes a couple of issues:
souliane <souliane@mailoo.org>
parents: 1396
diff changeset
483
2043
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
Goffi <goffi@goffi.org>
parents: 2039
diff changeset
484 @return (boot, None): False to cancel deletion
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
Goffi <goffi@goffi.org>
parents: 2039
diff changeset
485 all other value continue deletion
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
Goffi <goffi@goffi.org>
parents: 2039
diff changeset
486 """
f3940f6a3222 quick frontend (widgets): a deletion with onDelete can now be cancelled if onDelete return False
Goffi <goffi@goffi.org>
parents: 2039
diff changeset
487 return True
3159
30e08d904208 quick_frontend (app, widget): CagouWidget.onSelected is called when the widget is selected:
Goffi <goffi@goffi.org>
parents: 3158
diff changeset
488
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3479
diff changeset
489 def on_selected(self):
3159
30e08d904208 quick_frontend (app, widget): CagouWidget.onSelected is called when the widget is selected:
Goffi <goffi@goffi.org>
parents: 3158
diff changeset
490 """Called when host.selected_widget is this instance"""
30e08d904208 quick_frontend (app, widget): CagouWidget.onSelected is called when the widget is selected:
Goffi <goffi@goffi.org>
parents: 3158
diff changeset
491 pass