Mercurial > libervia-backend

annotate frontends/src/quick_frontend/quick_menus.py @ 1589:add1a6c8c594

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jp: optional positional arguments on "param get" command category and name are both optionals: - if nothing is given, categories list is printed - if only a category is given, a list of params and their values is printed - if both category and name are given, the requested param is printed
author Goffi <goffi@goffi.org>
date Sat, 14 Nov 2015 19:18:10 +0100
parents 3265a2639182
children d17772b0fe22
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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, 2015 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 unicode('') # XXX: unicode doesn't exist in pyjamas
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23 except (TypeError, AttributeError): # Error raised is not the same depending on pyjsbuild options
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24 unicode = str
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25
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26 from sat.core.log import getLogger
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27 from sat.core.i18n import _, languageSwitch
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28 log = getLogger(__name__)
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29 from sat_frontends.quick_frontend.constants import Const as C
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30 from collections import OrderedDict
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31
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32
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33 ## items ##
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34
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35 class MenuBase(object):
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36 ACTIVE=True
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37
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38 def __init__(self, name, extra=None):
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39 """
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40 @param name(unicode): canonical name of the item
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41 @param extra(dict[unicode, unicode], None): same as in [addMenus]
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42 """
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43 self._name = name
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44 self.setExtra(extra)
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45
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46 @property
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47 def canonical(self):
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48 """Return the canonical name of the container, used to identify it"""
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49 return self._name
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50
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51 @property
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52 def name(self):
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53 """Return the name of the container, can be translated"""
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54 return self._name
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55
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56 def setExtra(self, extra):
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57 if extra is None:
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58 extra = {}
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59 self.icon = extra.get("icon")
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60
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61
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62 class MenuItem(MenuBase):
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63 """A callable item in the menu"""
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64 CALLABLE=False
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65
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66 def __init__(self, name, name_i18n, extra=None, type_=None):
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67 """
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68 @param name(unicode): canonical name of the item
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69 @param name_i18n(unicode): translated name of the item
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70 @param extra(dict[unicode, unicode], None): same as in [addMenus]
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71 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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72 """
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73 MenuBase.__init__(self, name, extra)
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74 self._name_i18n = name_i18n if name_i18n else name
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75 self.type = type_
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76
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77 @property
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78 def name(self):
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79 return self._name_i18n
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80
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81 def collectData(self, caller):
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82 """Get data according to data_collector
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83
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84 @param caller: Menu caller
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85 """
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86 assert self.type is not None # if data collector are used, type must be set
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87 data_collector = QuickMenusManager.getDataCollector(self.type)
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88
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89 if data_collector is None:
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90 return {}
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91
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92 elif callable(data_collector):
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93 return data_collector(caller, self.name)
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94
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95 else:
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96 if caller is None:
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97 log.error(u"Caller can't be None with a dictionary as data_collector")
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98 return {}
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99 data = {}
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100 for data_key, caller_attr in data_collector.iteritems():
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101 data[data_key] = unicode(getattr(caller, caller_attr))
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102 return data
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103
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104
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105 def call(self, caller, profile=C.PROF_KEY_NONE):
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106 """Execute the menu item
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107
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108 @param caller: instance linked to the menu
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109 @param profile: %(doc_profile)s
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110 """
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111 raise NotImplementedError
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112
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113
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114 class MenuItemDistant(MenuItem):
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115 """A MenuItem with a distant callback"""
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116 CALLABLE=True
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117
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118 def __init__(self, host, type_, name, name_i18n, id_, extra=None):
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119 """
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120 @param host: %(doc_host)s
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121 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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122 @param name(unicode): canonical name of the item
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123 @param name_i18n(unicode): translated name of the item
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124 @param id_(unicode): id of the distant callback
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125 @param extra(dict[unicode, unicode], None): same as in [addMenus]
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126 """
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127 MenuItem.__init__(self, name, name_i18n, extra, type_)
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128 self.host = host
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129 self.id = id_
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130
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131 def call(self, caller, profile=C.PROF_KEY_NONE):
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132 data = self.collectData(caller)
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133 log.debug("data collected: %s" % data)
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134 self.host.launchAction(self.id, data, profile=profile)
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135
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136
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137 class MenuItemLocal(MenuItem):
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138 """A MenuItem with a distant callback"""
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139 CALLABLE=True
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140
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141 def __init__(self, type_, name, name_i18n, callback, extra=None):
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142 """
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143 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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144 @param name(unicode): canonical name of the item
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145 @param name_i18n(unicode): translated name of the item
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146 @param callback(callable): local callback. Will be called with the caller as only argument if data_collector is None, else with the caller + requested data + profile.
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147 @param extra(dict[unicode, unicode], None): same as in [addMenus]
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148 """
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149 MenuItem.__init__(self, name, name_i18n, extra, type_)
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150 self.callback = callback
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151
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152 def call(self, caller, profile=C.PROF_KEY_NONE):
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153 data_collector = QuickMenusManager.getDataCollector(self.type)
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154 if data_collector is None:
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155 self.callback()
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156 else:
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157 self.callback(caller, self.collectData(caller), profile)
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158
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159
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160 class MenuHook(MenuItemLocal):
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161 """A MenuItem which replace an expected item from backend"""
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162 pass
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163
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164
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165 class MenuPlaceHolder(MenuItem):
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166 """A non existant menu which is used to keep a position"""
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167 ACTIVE=False
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168
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169 def __init__(self, name):
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170 MenuItem.__init__(self, name, name)
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171
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172
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173 class MenuSeparator(MenuItem):
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174 """A separation between items/categories"""
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175 SEP_IDX=0
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176
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177 def __init__(self):
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178 MenuSeparator.SEP_IDX +=1
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179 name = u"___separator_{}".format(MenuSeparator.SEP_IDX)
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180 MenuItem.__init__(self, name, name)
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181
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182
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183 ## containers ##
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184
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185
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186 class MenuContainer(MenuBase):
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187
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188 def __init__(self, name, extra=None):
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189 MenuBase.__init__(self, name, extra)
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190 self._items = OrderedDict()
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191
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192 def __len__(self):
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193 return len(self._items)
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194
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195 def __contains__(self, item):
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196 return item.canonical in self._items
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197
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198 def __iter__(self):
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199 return self._items.itervalues()
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200
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201 def __getitem__(self, item):
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202 try:
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203 return self._items[item.canonical]
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204 except KeyError:
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205 raise KeyError(item)
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206
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207 def getOrCreate(self, item):
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208 log.debug(u"MenuContainer getOrCreate: item=%s name=%s\nlist=%s" % (item, item.canonical, self._items.keys()))
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209 try:
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210 return self[item]
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211 except KeyError:
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212 self.append(item)
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213 return item
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214
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215 def getActiveMenus(self):
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216 """Return an iterator on active children"""
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217 for child in self._items.itervalues():
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218 if child.ACTIVE:
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219 yield child
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220
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221 def append(self, item):
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222 """add an item at the end of current ones
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223
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224 @param item: instance of MenuBase (must be unique in container)
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225 """
1364
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226 assert isinstance(item, MenuItem) or isinstance(item, MenuContainer)
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227 assert item.canonical not in self._items
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228 self._items[item.canonical] = item
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229
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230 def replace(self, item):
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231 """add an item at the end of current ones or replace an existing one"""
1364
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232 self._items[item.canonical] = item
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233
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234
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235 class MenuCategory(MenuContainer):
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236 """A category which can hold other menus or categories"""
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237
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238 def __init__(self, name, name_i18n=None, extra=None):
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239 """
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240 @param name(unicode): canonical name
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241 @param name_i18n(unicode, None): translated name
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242 @param icon(unicode, None): same as in MenuBase.__init__
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243 """
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244 log.debug("creating menuCategory %s with extra %s" % (name, extra))
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245 MenuContainer.__init__(self, name, extra)
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246 self._name_i18n = name_i18n or name
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247
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248 @property
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249 def name(self):
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250 return self._name_i18n
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251
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252
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253 class MenuType(MenuContainer):
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254 """A type which can hold other menus or categories"""
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255 pass
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256
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257
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258 ## manager ##
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259
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260
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261 class QuickMenusManager(object):
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262 """Manage all the menus"""
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263 _data_collectors={C.MENU_GLOBAL: None} # No data is associated with C.MENU_GLOBAL items
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264
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265 def __init__(self, host, menus=None, language=None):
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266 """
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267 @param host: %(doc_host)s
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268 @param menus(iterable): menus as in [addMenus]
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269 @param language: same as in [i18n.languageSwitch]
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270 """
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271 self.host = host
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272 MenuBase.host = host
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273 self.language = language
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274 self.menus = {}
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275 if menus is not None:
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276 self.addMenus(menus)
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277
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278 def _getPathI18n(self, path):
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279 """Return translated version of path"""
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280 languageSwitch(self.language)
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281 path_i18n = [_(elt) for elt in path]
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282 languageSwitch()
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283 return path_i18n
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284
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285 def _createCategories(self, type_, path, path_i18n=None, top_extra=None):
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286 """Create catogories of the path
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287
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288 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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289 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.importMenu]
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290 @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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291 @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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292 @return (MenuContainer): last category created, or MenuType if path is empty
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293 """
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294 if path_i18n is None:
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295 path_i18n = self._getPathI18n(path)
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296 assert len(path) == len(path_i18n)
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297 menu_container = self.menus.setdefault(type_, MenuType(type_))
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298
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299 for idx, category in enumerate(path):
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300 menu_category = MenuCategory(category, path_i18n[idx], extra=top_extra)
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301 menu_container = menu_container.getOrCreate(menu_category)
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302 top_extra = None
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303
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304 return menu_container
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305
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306 @staticmethod
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307 def addDataCollector(type_, data_collector):
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308 """Associate a data collector to a menu type
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309
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310 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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311 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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312 @param data_collector(dict[unicode,unicode], callable, None): can be:
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313 - a dict which map data name to local name. The attribute named after the dict values will be getted from caller, and put in data. 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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314 - a callable which must return the data dictionnary. callable will have caller and item name as argument
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315 - None: an empty dict will be used
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316 """
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317 QuickMenusManager._data_collectors[type_] = data_collector
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318
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319 @staticmethod
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320 def getDataCollector(type_):
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321 """Get data_collector associated to type_
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322
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323 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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324 @return (callable, dict, None): data_collector
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325 """
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326 try:
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327 return QuickMenusManager._data_collectors[type_]
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328 except KeyError:
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329 log.error(u"No data collector registered for {}".format(type_))
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330 return None
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331
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332 def addMenuItem(self, type_, path, item, path_i18n=None, top_extra=None):
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333 """Add a MenuItemBase instance
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334
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335 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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336 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.importMenu], stop at the last parent category
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337 @param item(MenuItem): a instancied item
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338 @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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339 @param top_extra: same as in [_createCategories]
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340 """
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341 if path_i18n is None:
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342 path_i18n = self._getPathI18n(path)
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343 assert path and len(path) == len(path_i18n)
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344
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345 menu_container = self._createCategories(type_, path, path_i18n, top_extra)
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346
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347 if item in menu_container:
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348 if isinstance(item, MenuHook):
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349 menu_container.replace(item)
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350 else:
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351 container_item = menu_container[item]
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352 if isinstance(container_item, MenuPlaceHolder):
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353 menu_container.replace(item)
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354 elif isinstance(container_item, MenuHook):
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355 # MenuHook must not be replaced
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356 log.debug(u"ignoring menu at path [{}] because a hook is already in place".format(path))
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357 else:
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358 log.error(u"Conflicting menus at path [{}]".format(path))
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359 else:
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360 log.debug(u"Adding menu [{type_}] {path}".format(type_=type_, path=path))
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361 menu_container.append(item)
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362 self.host.callListeners('menu', type_, path, path_i18n, item)
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363
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364 def addMenu(self, type_, path, path_i18n=None, extra=None, top_extra=None, id_=None, callback=None):
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365 """Add a menu item
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366
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367 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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368 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.importMenu]
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369 @param path_i18n(list[unicode], None): translated menu path (same lenght as path), or None to get deferred translation
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370 @param extra(dict[unicode, unicode], None): same as in [addMenus]
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371 @param top_extra: same as in [_createCategories]
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372 @param id_(unicode): callback id (mutually exclusive with callback)
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373 @param callback(callable): local callback (mutually exclusive with id_)
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374 """
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375 if path_i18n is None:
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376 path_i18n = self._getPathI18n(path)
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377 assert bool(id_) ^ bool(callback) # we must have id_ xor callback defined
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378 if id_:
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379 menu_item = MenuItemDistant(self.host, type_, path[-1], path_i18n[-1], id_=id_, extra=extra)
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380 else:
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381 menu_item = MenuItemLocal(type_, path[-1], path_i18n[-1], callback=callback, extra=extra)
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382 self.addMenuItem(type_, path[:-1], menu_item, path_i18n[:-1], top_extra)
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383
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384 def addMenus(self, menus, top_extra=None):
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385 """Add several menus at once
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386
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387 @param menus(iterable): iterable with:
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388 id_(unicode,callable): id of distant callback or local callback
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389 type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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390 path(iterable[unicode]): same as in [sat.core.sat_main.SAT.importMenu]
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391 path_i18n(iterable[unicode]): translated menu path (same lenght as path)
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392 extra(dict[unicode,unicode]): dictionary of extra data (used on the leaf menu), can be:
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393 - "icon": icon name
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394 @param top_extra: same as in [_createCategories]
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395 """
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396 # TODO: manage icons
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397 for id_, type_, path, path_i18n, extra in menus:
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398 if callable(id_):
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399 self.addMenu(type_, path, path_i18n, callback=id_, extra=extra, top_extra=top_extra)
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400 else:
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401 self.addMenu(type_, path, path_i18n, id_=id_, extra=extra, top_extra=top_extra)
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402
1366
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403 def addMenuHook(self, type_, path, path_i18n=None, extra=None, top_extra=None, callback=None):
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404 """Helper method to add a menu hook
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405
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406 Menu hooks are local menus which override menu given by backend
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407 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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408 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.importMenu]
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409 @param path_i18n(list[unicode], None): translated menu path (same lenght as path), or None to get deferred translation
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410 @param extra(dict[unicode, unicode], None): same as in [addMenus]
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411 @param top_extra: same as in [_createCategories]
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412 @param callback(callable): local callback (mutually exclusive with id_)
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413 """
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414 if path_i18n is None:
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415 path_i18n = self._getPathI18n(path)
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416 menu_item = MenuHook(type_, path[-1], path_i18n[-1], callback=callback, extra=extra)
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417 self.addMenuItem(type_, path[:-1], menu_item, path_i18n[:-1], top_extra)
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418 log.info(u"Menu hook set on {path} ({type_})".format(path=path, type_=type_))
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419
1364
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420 def addCategory(self, type_, path, path_i18n=None, extra=None, top_extra=None):
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421 """Create a category with all parents, and set extra on the last one
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422
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423 @param type_(unicode): same as in [sat.core.sat_main.SAT.importMenu]
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424 @param path(list[unicode]): same as in [sat.core.sat_main.SAT.importMenu]
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425 @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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426 @param extra(dict[unicode, unicode], None): same as in [addMenus] (added on the leaf category only)
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427 @param top_extra: same as in [_createCategories]
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428 @return (MenuCategory): last category add
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429 """
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430 if path_i18n is None:
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431 path_i18n = self._getPathI18n(path)
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432 last_container = self._createCategories(type_, path, path_i18n, top_extra=top_extra)
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433 last_container.setExtra(extra)
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434 return last_container
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435
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436 def getMainContainer(self, type_):
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437 """Get a main MenuType container
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438
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439 @param type_: a C.MENU_* constant
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440 @return(MenuContainer): the main container
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441 """
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442 menu_container = self.menus.setdefault(type_, MenuType(type_))
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443 return menu_container