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annotate sat_frontends/quick_frontend/quick_widgets.py @ 2852:e2595c81eb6d

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quick frontend(widgets): improved handling of multiple instances of widgets: when a widget was recreated, a new hash was created with a suffix, making hash matching difficult and bug prone. This has been changed to use a list of instances instead, this simplify the code and avoid issues while looking for existing instances of a widget.
author Goffi <goffi@goffi.org>
date Sun, 10 Mar 2019 18:03:14 +0100
parents 7764383a968c
children 6901a425d882
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # helper class for making a SAT frontend
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5 # Copyright (C) 2009-2019 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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16
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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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20 from sat.core.log import getLogger
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21
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22 log = getLogger(__name__)
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23 from sat.core import exceptions
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24 from sat_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 unicode("") # 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 unicode = 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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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 def __init__(self, host):
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61 self.host = host
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62 self._widgets = {}
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63
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64 def __iter__(self):
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65 """Iterate throught all widgets"""
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66 for widget_map in self._widgets.itervalues():
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67 for widget_instances in widget_map.itervalues():
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68 for widget in widget_instances:
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69 yield widget
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70
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71 def getRealClass(self, class_):
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72 """Return class registered for given class_
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73
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74 @param class_: subclass of QuickWidget
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75 @return: class actually used to create widget
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76 """
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77 try:
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78 # FIXME: we use base_cls.__name__ instead of base_cls directly because pyjamas bugs
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79 # in the second case
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80 cls = classes_map[class_.__name__]
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81 except KeyError:
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82 cls = class_
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83 if cls is None:
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84 raise exceptions.InternalError(
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85 "There is not class registered for {}".format(class_)
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86 )
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87 return cls
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88
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89 def getWidgetInstances(self, widget):
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90 """Get all instance of a widget
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91
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92 This is a helper method which call getWidgets
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93 @param widget(QuickWidget): retrieve instances of this widget
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94 @return: iterator on widgets
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95 """
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96 try:
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97 target = widget.target
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98 except AttributeError:
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99 target = next(iter(widget.targets))
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100 return self.getWidgets(widget.__class__, target, widget.profiles)
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101
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102 def getWidgets(self, class_, target=None, profiles=None):
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103 """Get all subclassed widgets instances
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104
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105 @param class_: subclass of QuickWidget, same parameter as used in
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106 [getOrCreateWidget]
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107 @param target: if not None, construct a hash with this target and filter
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108 corresponding widgets
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109 recreated widgets are handled
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110 @param profiles(iterable, None): if not None, filter on instances linked to these
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111 profiles
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112 @return: iterator on widgets
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113 """
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114 class_ = self.getRealClass(class_)
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115 try:
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116 widgets_map = self._widgets[class_.__name__]
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117 except KeyError:
2007
19b9d3f8a6c7 plugin XEP-0085, quick_frontends, primitivus: chat states are working again
Goffi <goffi@goffi.org>
parents: 1995
diff changeset
118 return
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faa1129559b8 core, frontends: refactoring to base Libervia on QuickFrontend (big mixed commit):
Goffi <goffi@goffi.org>
parents: 1265
diff changeset
119 else:
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
120 if target is not None:
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 filter_hash = unicode(class_.getWidgetHash(target, profiles))
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 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
123 filter_hash = None
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
124 if filter_hash is not None:
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
125 for widget in widgets_map[filter_hash]:
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
126 yield widget
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
127 else:
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
128 for widget_instances in widgets_map.itervalues():
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
129 for widget in widget_instances:
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
130 yield widget
1290
faa1129559b8 core, frontends: refactoring to base Libervia on QuickFrontend (big mixed commit):
Goffi <goffi@goffi.org>
parents: 1265
diff changeset
131
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
132 def getWidget(self, class_, target=None, profiles=None):
1349
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
133 """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
souliane <souliane@mailoo.org>
parents: 1322
diff changeset
134
2852
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Goffi <goffi@goffi.org>
parents: 2851
diff changeset
135 if several instances of widgets with this hash exist, the first one is returned
2845
42380a4f6433 quick frontend (app): new synchronisation mechanism:
Goffi <goffi@goffi.org>
parents: 2792
diff changeset
136 @param class_: subclass of QuickWidget, same parameter as used in [getOrCreateWidget]
1349
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
137 @param target: target depending of the widget, usually a JID instance
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
138 @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
139 used, depending of the widget class)
1349
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
140 @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
141 """
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
142 assert (target is not None) or (profiles is not None)
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
143 if profiles is not None and isinstance(profiles, unicode):
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
144 profiles = [profiles]
1349
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
145 class_ = self.getRealClass(class_)
1938
011eff37e21d quick frontend, primitivus: quickContactList refactored to handle several profiles at once
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
146 hash_ = class_.getWidgetHash(target, profiles)
1349
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
147 try:
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
148 return self._widgets[class_.__name__][hash_][0]
1349
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
149 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
150 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
151
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e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
152 def getOrCreateWidget(self, class_, target, *args, **kwargs):
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
153 """Get an existing widget or create a new one when necessary
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
154
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
155 If the widget is new, self.host.newWidget will be called with it.
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
156 @param class_(class): class of the widget to create
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
157 @param target: target depending of the widget, usually a JID instance
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
158 @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
159 @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):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
160 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
161 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):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
162 if 'on_new_widget' is present it can have the following values:
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
163 C.WIDGET_NEW [default]: self.host.newWidget will be called on widget creation
1322
1f13a837e4b2 quick_frontend (quick_widgets): revert commit 1319
souliane <souliane@mailoo.org>
parents: 1321
diff changeset
164 [callable]: this method will be called instead of self.host.newWidget
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
165 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
166 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
167 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
168 C.WIDGET_RAISE: raise WidgetAlreadyExistsError
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
169 C.WIDGET_RECREATE: create a new widget
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
170 if the existing widget has a "recreateArgs" method, it will be called with args list and kwargs dict
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
171 so the values can be completed to create correctly the new instance
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
172 [callable]: this method will be called with existing widget as argument, the widget to use must be returned
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
173 if 'force_hash' is present, the hash given in value will be used instead of the one returned by class_.getWidgetHash
1307
9512590dc3d7 quick_ frontend (quick widgets): added explanation in docstring for non special keywords in getOrCreateWidget
Goffi <goffi@goffi.org>
parents: 1304
diff changeset
174 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
175 it will be used to create a new QuickChat instance).
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
176 @return: a class_ instance, either new or already existing
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
177 """
1290
faa1129559b8 core, frontends: refactoring to base Libervia on QuickFrontend (big mixed commit):
Goffi <goffi@goffi.org>
parents: 1265
diff changeset
178 cls = self.getRealClass(class_)
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
179
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
180 ## arguments management ##
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
181 _args = [self.host, target] + list(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
182 args
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
183 ) 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
184 _kwargs = kwargs or {}
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
185 if "profiles" in _kwargs and "profile" in _kwargs:
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
186 raise ValueError(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
187 "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
188 )
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
189 try:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
190 _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
191 except KeyError:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
192 if not "profiles" in _kwargs:
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
193 _kwargs["profiles"] = None
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
194
2792
441b536e28ed quick frontend (chat): use right type in getOrCreateWidget on new message
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
195 # 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
196 try:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
197 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
198 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
199 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
200
2792
441b536e28ed quick frontend (chat): use right type in getOrCreateWidget on new message
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
201 # 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
202 try:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
203 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
204 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
205 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
206
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 ## we get the hash ##
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
208 try:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
209 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
210 except KeyError:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
211 hash_ = cls.getWidgetHash(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
212
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
213 ## 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
214
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
215 widgets_map = self._widgets.setdefault(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
216 cls.__name__, {}
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
217 ) # we sorts widgets by classes
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
218 if not cls.SINGLE:
2624
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
219 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):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
220 else:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
221 try:
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
222 widget = widgets_map[hash_][0]
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
223 except KeyError:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
224 widget = None
2852
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
225 else:
e2595c81eb6d quick frontend(widgets): improved handling of multiple instances of widgets:
Goffi <goffi@goffi.org>
parents: 2851
diff changeset
226 widget.addTarget(target)
1265
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
227
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
228 if widget is None:
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229 # we need to create a new widget
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230 log.debug(u"Creating new widget for target {} {}".format(target, cls))
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231 widget = cls(*_args, **_kwargs)
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232 widgets_map[hash_] = [widget]
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233
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234 if on_new_widget == C.WIDGET_NEW:
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235 self.host.newWidget(widget)
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236 elif callable(on_new_widget):
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237 on_new_widget(widget)
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238 else:
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239 assert on_new_widget is None
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240 else:
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241 # the widget already exists
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242 if on_existing_widget == C.WIDGET_KEEP:
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243 pass
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244 elif on_existing_widget == C.WIDGET_RAISE:
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245 raise WidgetAlreadyExistsError(hash_)
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246 elif on_existing_widget == C.WIDGET_RECREATE:
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247 try:
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248 recreateArgs = widget.recreateArgs
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249 except AttributeError:
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250 pass
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251 else:
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252 recreateArgs(_args, _kwargs)
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253 widget = cls(*_args, **_kwargs)
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254 widgets_map[hash_].append(widget)
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255 log.debug(u"widget <{wid}> already exists, a new one has been recreated"
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256 .format(wid=widget))
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257 elif callable(on_existing_widget):
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258 widget = on_existing_widget(widget)
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259 if widget is None:
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260 raise exceptions.InternalError(
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261 u"on_existing_widget method must return the widget to use")
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262 else:
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263 raise exceptions.InternalError(
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264 "Unexpected on_existing_widget value ({})".format(on_existing_widget))
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265
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266 return widget
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267
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268 def deleteWidget(self, widget_to_delete, *args, **kwargs):
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269 """Delete a widget
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270
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271 this method must be called by frontends when a widget is deleted
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272 widget's onDelete method will be called before deletion
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273 @param widget_to_delete(QuickWidget): widget which need to deleted
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274 @param *args: extra arguments to pass to onDelete
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275 @param *kwargs: extra keywords arguments to pass to onDelete
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276 the extra arguments are not use by QuickFrontend, it's is up to
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277 the frontend to use them or not
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278 """
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279 if widget_to_delete.onDelete(*args, **kwargs) == False:
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280 return
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281
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282 if self.host.selected_widget == widget_to_delete:
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283 self.host.selected_widget = None
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284
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285 for widget_map in self._widgets.itervalues():
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286 to_delete = set()
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287 for hash_, widget_instances in widget_map.iteritems():
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288 if widget_to_delete in widget_instances:
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289 widget_instances.remove(widget_to_delete)
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290 if not widget_instances:
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291 to_delete.add(hash_)
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292 for hash_ in to_delete:
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293 del widget_map[hash_]
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294
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295
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296 class QuickWidget(object):
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297 """generic widget base"""
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298
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299 SINGLE = True # if True, there can be only one widget per target(s)
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300 PROFILES_MULTIPLE = False # If True, this widget can handle several profiles at once
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301 PROFILES_ALLOW_NONE = False # If True, this widget can be used without profile
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302
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303 def __init__(self, host, target, profiles=None):
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304 """
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305 @param host: %(doc_host)s
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306 @param target: target specific for this widget class
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307 @param profiles: can be either:
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308 - (unicode): used when widget class manage a unique profile
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309 - (iterable): some widget class can manage several profiles, several at once can be specified here
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310 - None: no profile is managed by this widget class (rare)
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311 @raise: ValueError when (iterable) or None is given to profiles for a widget class which manage one unique profile.
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312 """
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313 self.host = host
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314 self.targets = set()
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315 self.addTarget(target)
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316 self.profiles = set()
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317 self._sync = True
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318 if isinstance(profiles, basestring):
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319 self.addProfile(profiles)
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320 elif profiles is None:
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321 if not self.PROFILES_ALLOW_NONE:
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322 raise ValueError("profiles can't have a value of None")
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323 else:
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324 for profile in profiles:
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325 self.addProfile(profile)
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326 if not self.profiles:
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327 raise ValueError("no profile found, use None for no profile classes")
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328
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329 @property
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330 def profile(self):
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331 assert (
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332 len(self.profiles) == 1
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333 and not self.PROFILES_MULTIPLE
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334 and not self.PROFILES_ALLOW_NONE
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335 )
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336 return list(self.profiles)[0]
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337
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338 # synchronisation state
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339
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340 @property
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341 def sync(self):
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342 return self._sync
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343
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344 @sync.setter
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345 def sync(self, state):
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346 """state of synchronisation with backend
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347
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348 @param state(bool): True when backend is synchronised
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349 False is set by core
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350 True must be set by the widget when resynchronisation is finished
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351 """
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352 self._sync = state
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353
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354 def resync(self):
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355 """Method called when backend can be resynchronized
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356
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357 The widget has to set self.sync itself when the synchronisation if finished
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358 """
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359 pass
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360
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361 # target/profile
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362
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363 def addTarget(self, target):
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364 """Add a target if it doesn't already exists
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365
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366 @param target: target to add
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367 """
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368 self.targets.add(target)
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369
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370 def addProfile(self, profile):
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371 """Add a profile is if doesn't already exists
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372
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373 @param profile: profile to add
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374 """
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375 if self.profiles and not self.PROFILES_MULTIPLE:
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376 raise ValueError("multiple profiles are not allowed")
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377 self.profiles.add(profile)
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378
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379 # widget identitication
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380
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381 @staticmethod
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382 def getWidgetHash(target, profiles):
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383 """Return the hash associated with this target for this widget class
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384
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385 some widget classes can manage several target on the same instance
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386 (e.g.: a chat widget with multiple resources on the same bare jid),
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387 this method allow to return a hash associated to one or several targets
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388 to retrieve the good instance. For example, a widget managing JID targets,
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389 and all resource of the same bare jid would return the bare jid as hash.
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390
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391 @param target: target to check
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392 @param profiles: profile(s) associated to target, see __init__ docstring
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393 @return: a hash (can correspond to one or many targets or profiles, depending of widget class)
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394 """
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395 return unicode(target) # by defaut, there is one hash for one target
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396
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397 # widget life events
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398
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399 def onDelete(self, *args, **kwargs):
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400 """Called when a widget is being deleted
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401
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402 @return (boot, None): False to cancel deletion
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403 all other value continue deletion
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404 """
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405 log.debug(u"widget {} deleted".format(self))
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406 return True