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annotate frontends/src/quick_frontend/quick_widgets.py @ 1311:4895e1e092fb frontends_multi_profiles

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frontends (tools): Pyjamas's JID implementation can be compared to an object of a different type: - always return False if the other object is not a JID - to not fake list membership's test, hash(jid) now differs from hash(unicode(jid))
author souliane <souliane@mailoo.org>
date Sat, 07 Feb 2015 14:47:23 +0100
parents 9ca93ecdeea5
children 9e904f8a094e
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # helper class for making a SAT frontend
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 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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20 from sat.core.log import getLogger
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21 log = getLogger(__name__)
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22 from sat.core import exceptions
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24 from sat_frontends.quick_frontend.constants import Const as C
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26 classes_map = {}
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29 try:
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30 # FIXME: to be removed when an acceptable solution is here
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31 unicode('') # XXX: unicode doesn't exist in pyjamas
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32 except (TypeError, AttributeError): # Error raised is not the same depending on pyjsbuild options
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33 unicode = str
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34
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36 def register(base_cls, child_cls=None):
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37 """Register a child class to use by default when a base class is needed
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39 @param base_cls: "Quick..." base class (like QuickChat or QuickContact), must inherit from QuickWidget
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40 @param child_cls: inherited class to use when Quick... class is requested, must inherit from base_cls.
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41 Can be None if it's the base_cls itself which register
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42 """
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43 # FIXME: we use base_cls.__name__ instead of base_cls directly because pyjamas because
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44 # in the second case
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45 classes_map[base_cls.__name__] = child_cls
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47
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48 class WidgetAlreadyExistsError(Exception):
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49 pass
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52 class QuickWidgetsManager(object):
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53 """This class is used to manage all the widgets of a frontend
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54 A widget can be a window, a graphical thing, or someting else depending of the frontend"""
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55
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56 def __init__(self, host):
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57 self.host = host
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58 self._widgets = {}
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59
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60 def __iter__(self):
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61 """Iterate throught all widgets"""
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62 for widget_map in self._widgets.itervalues():
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63 for widget in widget_map.itervalues():
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64 yield widget
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66 def getRealClass(self, class_):
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67 """Return class registered for given class_
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68
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69 @param class_: subclass of QuickWidget
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70 @return: class actually used to create widget
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71 """
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72 try:
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73 # FIXME: we use base_cls.__name__ instead of base_cls directly because pyjamas bugs
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74 # in the second case
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75 cls = classes_map[class_.__name__]
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76 except KeyError:
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77 cls = class_
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78 if cls is None:
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79 raise exceptions.InternalError("There is not class registered for {}".format(class_))
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80 return cls
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81
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82 def getWidgets(self, class_):
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83 """Get all subclassed widgets
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84
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85 @param class_: subclass of QuickWidget, same parameter as used in [getOrCreateWidget]
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86 @return: iterator on widgets
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87 """
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88 class_ = self.getRealClass(class_)
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89 try:
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90 widgets_map = self._widgets[class_.__name__]
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91 except KeyError:
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92 return iter([])
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93 else:
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94 return widgets_map.itervalues()
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95
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96 def getOrCreateWidget(self, class_, target, *args, **kwargs):
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97 """Get an existing widget or create a new one when necessary
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98
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99 If the widget is new, self.host.newWidget will be called with it.
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100 @param class_(class): class of the widget to create
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101 @param target: target depending of the widget, usually a JID instance
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102 @param args(list): optional args to create a new instance of class_
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103 @param kwargs(list): optional kwargs to create anew instance of class_
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104 if 'profile' key is present, it will be popped and put in 'profiles'
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105 if there is neither 'profile' nor 'profiles', None will be used for 'profiles'
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106 if 'on_new_widget' is present it can have the following values:
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107 C.WIDGET_NEW [default]: self.host.newWidget will be called on widget creation
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108 [callable]: this method will be called instead of self.host.newWidget
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109 None: do nothing
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110 if 'on_existing_widget' is present it can have the following values:
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111 C.WIDGET_KEEP [default]: return the existing widget
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parents: 1290
diff changeset
112 C.WIDGET_RAISE: raise WidgetAlreadyExistsError
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
113 C.WIDGET_RECREATE: create a new widget *WITH A NEW HASH*
1308
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
114 [callable]: this method will be called with existing widget as argument
1265
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parents: 1139
diff changeset
115 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
116 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
117 it will be used to create a new QuickChat instance).
1265
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parents: 1139
diff changeset
118 @return: a class_ instance, either new or already existing
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parents: 1139
diff changeset
119 """
1290
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parents: 1265
diff changeset
120 cls = self.getRealClass(class_)
1265
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parents: 1139
diff changeset
121
1301
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
122 ## arguments management ##
1265
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parents: 1139
diff changeset
123 _args = [self.host, target] + list(args) or [] # FIXME: check if it's really necessary to use optional args
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
124 _kwargs = kwargs or {}
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
125 if 'profiles' in _kwargs and 'profile' in _kwargs:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
126 raise ValueError("You can't have 'profile' and 'profiles' keys at the same time")
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parents: 1139
diff changeset
127 try:
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parents: 1139
diff changeset
128 _kwargs['profiles'] = _kwargs.pop('profile')
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parents: 1139
diff changeset
129 except KeyError:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
130 if not 'profiles' in _kwargs:
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parents: 1139
diff changeset
131 _kwargs['profiles'] = None
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parents: 1139
diff changeset
132
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
133 #on_new_widget tell what to do for the new widget creation
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
134 try:
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
135 on_new_widget = _kwargs.pop('on_new_widget')
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
136 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
137 on_new_widget = C.WIDGET_NEW
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Goffi <goffi@goffi.org>
parents: 1290
diff changeset
138
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
139 #on_existing_widget tell what to do when the widget already exists
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
140 try:
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
141 on_existing_widget = _kwargs.pop('on_existing_widget')
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
142 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
143 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
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parents: 1290
diff changeset
144
afc57b34c0a3 Quick Frontend (quick_widgets): added on_existing_widget in getOrCreateWidget (see docstring for more infos) + use of constants
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parents: 1290
diff changeset
145 ## we get the hash ##
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parents: 1139
diff changeset
146 try:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
147 hash_ = _kwargs.pop('force_hash')
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parents: 1139
diff changeset
148 except KeyError:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
149 hash_ = cls.getWidgetHash(target, _kwargs['profiles'])
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
150
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
151 ## 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
152
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
153 widgets_map = self._widgets.setdefault(cls.__name__, {}) # we sorts widgets by classes
1265
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diff changeset
154 if not cls.SINGLE:
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parents: 1139
diff changeset
155 widget = None # if the class is not SINGLE, we always create a new widget
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parents: 1139
diff changeset
156 else:
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parents: 1139
diff changeset
157 try:
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parents: 1265
diff changeset
158 widget = widgets_map[hash_]
1265
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parents: 1139
diff changeset
159 widget.addTarget(target)
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parents: 1139
diff changeset
160 except KeyError:
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
161 widget = None
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
162
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
163 if widget is None:
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
164 # we need to create a new widget
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parents: 1139
diff changeset
165 log.debug(u"Creating new widget for target {} {}".format(target, cls))
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
166 widget = cls(*_args, **_kwargs)
1290
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parents: 1265
diff changeset
167 widgets_map[hash_] = widget
0
goffi@necton2
parents:
diff changeset
168
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
169 if on_new_widget == C.WIDGET_NEW:
1265
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parents: 1139
diff changeset
170 self.host.newWidget(widget)
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
171 elif callable(on_new_widget):
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
172 on_new_widget(widget)
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parents: 1139
diff changeset
173 else:
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
174 assert on_new_widget is None
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
175 else:
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
176 # the widget already exists
1308
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
177 if on_existing_widget == C.WIDGET_KEEP:
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
178 pass
1309
d0d5ba3b4d64 quick frontend(quick widgets): fixed bad condition test in previous commit
Goffi <goffi@goffi.org>
parents: 1308
diff changeset
179 elif on_existing_widget == C.WIDGET_RAISE:
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 raise WidgetAlreadyExistsError(hash_)
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
181 elif on_existing_widget == C.WIDGET_RECREATE:
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
182 # we use getOrCreateWidget to recreate the new 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
183 # /!\ we use args and kwargs and not _args and _kwargs because we need the original args
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
184 # we need to get rid of kwargs special options
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Goffi <goffi@goffi.org>
parents: 1290
diff changeset
185 new_kwargs = kwargs.copy()
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
186 try:
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
187 new_kwargs.pop('force_hash') # FIXME: we use pop instead of del here because pyjamas doesn't raise error on del
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
188 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
189 pass
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
190 else:
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
191 raise ValueError("force_hash option can't be used with on_existing_widget=RECREATE")
1265
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diff changeset
192
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
193 # XXX: keep up-to-date if new special kwargs are added (i.e.: delete these keys here)
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
194 new_kwargs['on_new_widget'] = None
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
195 new_kwargs['on_existing_widget'] = C.WIDGET_RAISE
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 hash_idx = 1
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
197 while True:
1310
9ca93ecdeea5 quick_frontend: fixes hash setting for QuickWidget
souliane <souliane@mailoo.org>
parents: 1309
diff changeset
198 new_kwargs['force_hash'] = "{}_new_instance_{}".format(hash_, hash_idx)
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
199 try:
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 widget = self.getOrCreateWidget(class_, target, *args, **new_kwargs)
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 except WidgetAlreadyExistsError:
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 hash_idx += 1
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 else:
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 log.debug(u"Widget already exists, a new one has been recreated with hash {}".format(new_kwargs['force_hash']))
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 break
1308
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
206 elif callable(on_existing_widget):
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
207 on_existing_widget(widget)
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
208 else:
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
209 raise exceptions.InternalError("Unexpected on_existing_widget value ({})".format(on_existing_widget))
f079e6ed1e69 quick frontend(quick widgets): added the ability to use a callable with getOrCreateWidget's on_existing_widget
Goffi <goffi@goffi.org>
parents: 1307
diff changeset
210
1265
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Goffi <goffi@goffi.org>
parents: 1139
diff changeset
211 return widget
e3a9ea76de35 quick_frontend, primitivus: multi-profiles refactoring part 1 (big commit, sorry :p):
Goffi <goffi@goffi.org>
parents: 1139
diff changeset
212
1303
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213 def deleteWidget(self, widget_to_delete):
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214 """Delete a widget
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215
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216 widget's onDelete method will be called before deletion
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217 """
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218 widget_to_delete.onDelete()
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219
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220 for widget_map in self._widgets.itervalues():
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221 for hash_, widget in widget_map.iteritems():
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222 if widget_to_delete is widget:
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223 del widget_map[hash_]
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224
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225
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226 class QuickWidget(object):
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227 """generic widget base"""
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228 SINGLE=True # if True, there can be only one widget per target(s)
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229 PROFILES_MULTIPLE=False
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230 PROFILES_ALLOW_NONE=False
0
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231
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232 def __init__(self, host, target, profiles=None):
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233 """
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234 @param host: %(doc_host)s
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235 @param target: target specific for this widget class
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236 @param profiles: can be either:
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237 - (unicode): used when widget class manage a unique profile
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238 - (iterable): some widget class can manage several profiles, several at once can be specified here
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239 - None: no profile is managed by this widget class (rare)
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240 @raise: ValueError when (iterable) or None is given to profiles for a widget class which manage one unique profile.
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241 """
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242 self.host = host
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243 self.targets = set()
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244 self.addTarget(target)
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245 self.profiles = set()
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246 if isinstance(profiles, basestring):
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247 self.addProfile(profiles)
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248 elif profiles is None:
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249 if not self.PROFILES_ALLOW_NONE:
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250 raise ValueError("profiles can't have a value of None")
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251 else:
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252 if not self.PROFILES_MULTIPLE:
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253 raise ValueError("multiple profiles are not allowed")
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254 for profile in profiles:
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255 self.addProfile(profile)
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256
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257 @property
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258 def profile(self):
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259 assert len(self.profiles) == 1 and not self.PROFILES_MULTIPLE and not self.PROFILES_ALLOW_NONE
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260 return list(self.profiles)[0]
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261
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262 def addTarget(self, target):
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263 """Add a target if it doesn't already exists
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264
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265 @param target: target to add
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266 """
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267 self.targets.add(target)
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268
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269 def addProfile(self, profile):
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270 """Add a profile is if doesn't already exists
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271
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272 @param profile: profile to add
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273 """
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274 if self.profiles and not self.PROFILES_MULTIPLE:
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275 raise ValueError("multiple profiles are not allowed")
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276 self.profiles.add(profile)
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277
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278 @staticmethod
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279 def getWidgetHash(target, profiles):
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280 """Return the hash associated with this target for this widget class
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281
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282 some widget classes can manage several target on the same instance
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283 (e.g.: a chat widget with multiple resources on the same bare jid),
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284 this method allow to return a hash associated to one or several targets
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285 to retrieve the good instance. For example, a widget managing JID targets,
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286 and all resource of the same bare jid would return the bare jid as hash.
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287
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288 @param target: target to check
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289 @param profiles: profile(s) associated to target, see __init__ docstring
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290 @return: a hash (can correspond to one or many targets or profiles, depending of widget class)
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291 """
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292 return unicode(target) # by defaut, there is one hash for one target
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293
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294 def onDelete(self):
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295 """Called when a widget is deleted"""
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296 log.debug(u"deleting widget {}".format(self)) # Must be implemented by frontends