annotate libervia/frontends/quick_frontend/quick_menus.py @ 4281:9e63e02318ec

core: show warning instead of exception in case of missing dependency when loading plugins
author Goffi <goffi@goffi.org>
date Fri, 12 Jul 2024 18:53:00 +0200
parents 26b7ed2817da
children
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rev   line source
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1 #!/usr/bin/env python3
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2
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3
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4 # helper class for making a SAT frontend
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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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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19
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20 try:
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21 # FIXME: to be removed when an acceptable solution is here
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22 str("") # XXX: unicode doesn't exist in pyjamas
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23 except (
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24 TypeError,
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25 AttributeError,
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26 ): # Error raised is not the same depending on pyjsbuild options
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27 str = str
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28
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29 from libervia.backend.core.log import getLogger
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30 from libervia.backend.core.i18n import _, language_switch
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31
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32 log = getLogger(__name__)
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33 from libervia.frontends.quick_frontend.constants import Const as C
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34 from collections import OrderedDict
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36
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37 ## items ##
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38
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39
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40 class MenuBase(object):
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41 ACTIVE = True
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42
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43 def __init__(self, name, extra=None):
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44 """
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45 @param name(unicode): canonical name of the item
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46 @param extra(dict[unicode, unicode], None): same as in [add_menus]
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47 """
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48 self._name = name
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49 self.set_extra(extra)
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50
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51 @property
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52 def canonical(self):
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53 """Return the canonical name of the container, used to identify it"""
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54 return self._name
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55
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56 @property
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57 def name(self):
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58 """Return the name of the container, can be translated"""
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59 return self._name
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60
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61 def set_extra(self, extra):
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62 if extra is None:
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63 extra = {}
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64 self.icon = extra.get("icon")
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65
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66
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67 class MenuItem(MenuBase):
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68 """A callable item in the menu"""
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69
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70 CALLABLE = False
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71
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72 def __init__(self, name, name_i18n, extra=None, type_=None):
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73 """
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74 @param name(unicode): canonical name of the item
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75 @param name_i18n(unicode): translated name of the item
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76 @param extra(dict[unicode, unicode], None): same as in [add_menus]
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77 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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78 """
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79 MenuBase.__init__(self, name, extra)
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80 self._name_i18n = name_i18n if name_i18n else name
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81 self.type = type_
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82
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83 @property
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84 def name(self):
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85 return self._name_i18n
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86
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87 def collect_data(self, caller):
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88 """Get data according to data_collector
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89
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90 @param caller: Menu caller
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91 """
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92 assert self.type is not None # if data collector are used, type must be set
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93 data_collector = QuickMenusManager.get_data_collector(self.type)
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94
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95 if data_collector is None:
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96 return {}
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97
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98 elif callable(data_collector):
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99 return data_collector(caller, self.name)
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100
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101 else:
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102 if caller is None:
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103 log.error("Caller can't be None with a dictionary as data_collector")
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104 return {}
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105 data = {}
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106 for data_key, caller_attr in data_collector.items():
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107 data[data_key] = str(getattr(caller, caller_attr))
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108 return data
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109
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110 def call(self, caller, profile=C.PROF_KEY_NONE):
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111 """Execute the menu item
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112
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113 @param caller: instance linked to the menu
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114 @param profile: %(doc_profile)s
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115 """
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116 raise NotImplementedError
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117
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118
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119 class MenuItemDistant(MenuItem):
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120 """A MenuItem with a distant callback"""
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121
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122 CALLABLE = True
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123
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124 def __init__(self, host, type_, name, name_i18n, id_, extra=None):
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125 """
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126 @param host: %(doc_host)s
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127 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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128 @param name(unicode): canonical name of the item
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129 @param name_i18n(unicode): translated name of the item
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130 @param id_(unicode): id of the distant callback
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131 @param extra(dict[unicode, unicode], None): same as in [add_menus]
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132 """
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133 MenuItem.__init__(self, name, name_i18n, extra, type_)
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134 self.host = host
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135 self.id = id_
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136
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137 def call(self, caller, profile=C.PROF_KEY_NONE):
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138 data = self.collect_data(caller)
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139 log.debug("data collected: %s" % data)
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140 self.host.action_launch(self.id, data, profile=profile)
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141
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142
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143 class MenuItemLocal(MenuItem):
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144 """A MenuItem with a local callback"""
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145
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146 CALLABLE = True
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147
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148 def __init__(self, type_, name, name_i18n, callback, extra=None):
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149 """
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150 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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151 @param name(unicode): canonical name of the item
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152 @param name_i18n(unicode): translated name of the item
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153 @param callback(callable): local callback.
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154 Will be called with no argument if data_collector is None
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155 and with caller, profile, and requested data otherwise
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156 @param extra(dict[unicode, unicode], None): same as in [add_menus]
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157 """
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158 MenuItem.__init__(self, name, name_i18n, extra, type_)
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159 self.callback = callback
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160
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161 def call(self, caller, profile=C.PROF_KEY_NONE):
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162 data_collector = QuickMenusManager.get_data_collector(self.type)
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163 if data_collector is None:
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164 # FIXME: would not it be better if caller and profile where used as arguments?
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165 self.callback()
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166 else:
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167 self.callback(caller, self.collect_data(caller), profile)
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168
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169
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170 class MenuHook(MenuItemLocal):
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171 """A MenuItem which replace an expected item from backend"""
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172
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173 pass
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174
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175
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176 class MenuPlaceHolder(MenuItem):
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177 """A non existant menu which is used to keep a position"""
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178
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179 ACTIVE = False
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180
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181 def __init__(self, name):
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182 MenuItem.__init__(self, name, name)
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183
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184
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185 class MenuSeparator(MenuItem):
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186 """A separation between items/categories"""
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187
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188 SEP_IDX = 0
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189
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190 def __init__(self):
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191 MenuSeparator.SEP_IDX += 1
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192 name = "___separator_{}".format(MenuSeparator.SEP_IDX)
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193 MenuItem.__init__(self, name, name)
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194
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195
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196 ## containers ##
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197
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198
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199 class MenuContainer(MenuBase):
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200 def __init__(self, name, extra=None):
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201 MenuBase.__init__(self, name, extra)
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202 self._items = OrderedDict()
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203
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204 def __len__(self):
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205 return len(self._items)
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206
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207 def __contains__(self, item):
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208 return item.canonical in self._items
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209
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210 def __iter__(self):
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211 return iter(self._items.values())
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212
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213 def __getitem__(self, item):
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214 try:
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215 return self._items[item.canonical]
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216 except KeyError:
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217 raise KeyError(item)
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218
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219 def get_or_create(self, item):
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220 log.debug(
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221 "MenuContainer get_or_create: item=%s name=%s\nlist=%s"
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222 % (item, item.canonical, list(self._items.keys()))
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223 )
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224 try:
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225 return self[item]
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226 except KeyError:
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227 self.append(item)
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228 return item
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229
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230 def get_active_menus(self):
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231 """Return an iterator on active children"""
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232 for child in self._items.values():
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233 if child.ACTIVE:
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234 yield child
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235
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236 def append(self, item):
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237 """add an item at the end of current ones
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238
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239 @param item: instance of MenuBase (must be unique in container)
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240 """
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241 assert isinstance(item, MenuItem) or isinstance(item, MenuContainer)
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242 assert item.canonical not in self._items
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243 self._items[item.canonical] = item
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244
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245 def replace(self, item):
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246 """add an item at the end of current ones or replace an existing one"""
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247 self._items[item.canonical] = item
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248
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249
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250 class MenuCategory(MenuContainer):
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251 """A category which can hold other menus or categories"""
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252
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253 def __init__(self, name, name_i18n=None, extra=None):
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254 """
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255 @param name(unicode): canonical name
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256 @param name_i18n(unicode, None): translated name
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257 @param icon(unicode, None): same as in MenuBase.__init__
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258 """
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259 log.debug("creating menuCategory %s with extra %s" % (name, extra))
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260 MenuContainer.__init__(self, name, extra)
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261 self._name_i18n = name_i18n or name
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262
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263 @property
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264 def name(self):
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265 return self._name_i18n
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266
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267
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268 class MenuType(MenuContainer):
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269 """A type which can hold other menus or categories"""
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270
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271 pass
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272
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273
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274 ## manager ##
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275
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276
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277 class QuickMenusManager(object):
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278 """Manage all the menus"""
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279
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280 _data_collectors = {
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281 C.MENU_GLOBAL: None
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282 } # No data is associated with C.MENU_GLOBAL items
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283
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284 def __init__(self, host, menus=None, language=None):
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285 """
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286 @param host: %(doc_host)s
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287 @param menus(iterable): menus as in [add_menus]
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288 @param language: same as in [i18n.language_switch]
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289 """
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290 self.host = host
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291 MenuBase.host = host
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292 self.language = language
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293 self.menus = {}
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294 if menus is not None:
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295 self.add_menus(menus)
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296
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297 def _get_path_i_1_8_n(self, path):
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298 """Return translated version of path"""
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299 language_switch(self.language)
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300 path_i18n = [_(elt) for elt in path]
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301 language_switch()
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302 return path_i18n
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303
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304 def _create_categories(self, type_, path, path_i18n=None, top_extra=None):
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305 """Create catogories of the path
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306
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307 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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308 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.import_menu]
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309 @param path_i18n(list[unicode], None): translated menu path (same lenght as path) or None to get deferred translation of path
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310 @param top_extra: extra data to use on the first element of path only. If the first element already exists and is reused, top_extra will be ignored (you'll have to manually change it if you really want to).
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311 @return (MenuContainer): last category created, or MenuType if path is empty
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312 """
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313 if path_i18n is None:
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314 path_i18n = self._get_path_i_1_8_n(path)
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315 assert len(path) == len(path_i18n)
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316 menu_container = self.menus.setdefault(type_, MenuType(type_))
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317
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318 for idx, category in enumerate(path):
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319 menu_category = MenuCategory(category, path_i18n[idx], extra=top_extra)
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320 menu_container = menu_container.get_or_create(menu_category)
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321 top_extra = None
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322
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323 return menu_container
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324
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325 @staticmethod
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326 def add_data_collector(type_, data_collector):
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327 """Associate a data collector to a menu type
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328
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329 A data collector is a method or a map which allow to collect context data to construct the dictionnary which will be sent to the bridge method managing the menu item.
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330 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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331 @param data_collector(dict[unicode,unicode], callable, None): can be:
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332 - a dict which map data name to local name.
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333 The attribute named after the dict values will be getted from caller, and put in data.
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334 e.g.: if data_collector={'room_jid':'target'}, then the "room_jid" data will be the value of the "target" attribute of the caller.
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335 - a callable which must return the data dictionnary. callable will have caller and item name as argument
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336 - None: an empty dict will be used
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337 """
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338 QuickMenusManager._data_collectors[type_] = data_collector
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339
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340 @staticmethod
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341 def get_data_collector(type_):
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342 """Get data_collector associated to type_
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343
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344 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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345 @return (callable, dict, None): data_collector
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346 """
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347 try:
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348 return QuickMenusManager._data_collectors[type_]
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349 except KeyError:
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350 log.error("No data collector registered for {}".format(type_))
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351 return None
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352
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353 def add_menu_item(self, type_, path, item, path_i18n=None, top_extra=None):
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354 """Add a MenuItemBase instance
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355
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356 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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357 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.import_menu], stop at the last parent category
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358 @param item(MenuItem): a instancied item
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359 @param path_i18n(list[unicode],None): translated menu path (same lenght as path) or None to use deferred translation of path
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360 @param top_extra: same as in [_create_categories]
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361 """
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362 if path_i18n is None:
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363 path_i18n = self._get_path_i_1_8_n(path)
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364 assert path and len(path) == len(path_i18n)
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365
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366 menu_container = self._create_categories(type_, path, path_i18n, top_extra)
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367
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368 if item in menu_container:
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369 if isinstance(item, MenuHook):
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370 menu_container.replace(item)
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371 else:
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372 container_item = menu_container[item]
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373 if isinstance(container_item, MenuPlaceHolder):
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374 menu_container.replace(item)
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375 elif isinstance(container_item, MenuHook):
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376 # MenuHook must not be replaced
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377 log.debug(
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378 "ignoring menu at path [{}] because a hook is already in place".format(
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379 path
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380 )
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381 )
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382 else:
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383 log.error("Conflicting menus at path [{}]".format(path))
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384 else:
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385 log.debug("Adding menu [{type_}] {path}".format(type_=type_, path=path))
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386 menu_container.append(item)
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387 self.host.call_listeners("menu", type_, path, path_i18n, item)
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388
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389 def add_menu(
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390 self,
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391 type_,
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392 path,
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393 path_i18n=None,
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394 extra=None,
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395 top_extra=None,
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396 id_=None,
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397 callback=None,
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398 ):
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399 """Add a menu item
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400
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401 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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402 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.import_menu]
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403 @param path_i18n(list[unicode], None): translated menu path (same lenght as path), or None to get deferred translation
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404 @param extra(dict[unicode, unicode], None): same as in [add_menus]
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405 @param top_extra: same as in [_create_categories]
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406 @param id_(unicode): callback id (mutually exclusive with callback)
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407 @param callback(callable): local callback (mutually exclusive with id_)
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408 """
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409 if path_i18n is None:
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410 path_i18n = self._get_path_i_1_8_n(path)
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411 assert bool(id_) ^ bool(callback) # we must have id_ xor callback defined
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412 if id_:
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413 menu_item = MenuItemDistant(
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414 self.host, type_, path[-1], path_i18n[-1], id_=id_, extra=extra
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415 )
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416 else:
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417 menu_item = MenuItemLocal(
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418 type_, path[-1], path_i18n[-1], callback=callback, extra=extra
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419 )
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420 self.add_menu_item(type_, path[:-1], menu_item, path_i18n[:-1], top_extra)
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421
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422 def add_menus(self, menus, top_extra=None):
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423 """Add several menus at once
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424
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425 @param menus(iterable): iterable with:
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426 id_(unicode,callable): id of distant callback or local callback
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427 type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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428 path(iterable[unicode]): same as in [sat.core.sat_main.SAT.import_menu]
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429 path_i18n(iterable[unicode]): translated menu path (same lenght as path)
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430 extra(dict[unicode,unicode]): dictionary of extra data (used on the leaf menu), can be:
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431 - "icon": icon name
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432 @param top_extra: same as in [_create_categories]
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433 """
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434 # TODO: manage icons
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435 for id_, type_, path, path_i18n, extra in menus:
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436 if callable(id_):
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437 self.add_menu(
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438 type_, path, path_i18n, callback=id_, extra=extra, top_extra=top_extra
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439 )
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440 else:
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441 self.add_menu(
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442 type_, path, path_i18n, id_=id_, extra=extra, top_extra=top_extra
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443 )
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444
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445 def add_menu_hook(
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446 self, type_, path, path_i18n=None, extra=None, top_extra=None, callback=None
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447 ):
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448 """Helper method to add a menu hook
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449
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450 Menu hooks are local menus which override menu given by backend
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451 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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452 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.import_menu]
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453 @param path_i18n(list[unicode], None): translated menu path (same lenght as path), or None to get deferred translation
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454 @param extra(dict[unicode, unicode], None): same as in [add_menus]
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455 @param top_extra: same as in [_create_categories]
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456 @param callback(callable): local callback (mutually exclusive with id_)
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457 """
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458 if path_i18n is None:
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459 path_i18n = self._get_path_i_1_8_n(path)
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460 menu_item = MenuHook(
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461 type_, path[-1], path_i18n[-1], callback=callback, extra=extra
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462 )
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463 self.add_menu_item(type_, path[:-1], menu_item, path_i18n[:-1], top_extra)
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464 log.info("Menu hook set on {path} ({type_})".format(path=path, type_=type_))
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465
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466 def add_category(self, type_, path, path_i18n=None, extra=None, top_extra=None):
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467 """Create a category with all parents, and set extra on the last one
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468
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469 @param type_(unicode): same as in [sat.core.sat_main.SAT.import_menu]
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470 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.import_menu]
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471 @param path_i18n(list[unicode], None): translated menu path (same lenght as path), or None to get deferred translation of path
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472 @param extra(dict[unicode, unicode], None): same as in [add_menus] (added on the leaf category only)
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473 @param top_extra: same as in [_create_categories]
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474 @return (MenuCategory): last category add
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475 """
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diff changeset
476 if path_i18n is None:
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477 path_i18n = self._get_path_i_1_8_n(path)
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478 last_container = self._create_categories(
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479 type_, path, path_i18n, top_extra=top_extra
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480 )
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481 last_container.set_extra(extra)
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482 return last_container
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483
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484 def get_main_container(self, type_):
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485 """Get a main MenuType container
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486
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487 @param type_: a C.MENU_* constant
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diff changeset
488 @return(MenuContainer): the main container
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diff changeset
489 """
28f0b33ca17c quick_frontend (menus): added a quick_menus module to manage easily menus logic:
Goffi <goffi@goffi.org>
parents:
diff changeset
490 menu_container = self.menus.setdefault(type_, MenuType(type_))
28f0b33ca17c quick_frontend (menus): added a quick_menus module to manage easily menus logic:
Goffi <goffi@goffi.org>
parents:
diff changeset
491 return menu_container