Utilities/Startup.py

Sat, 02 Jan 2010 18:52:53 +0000

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 02 Jan 2010 18:52:53 +0000
changeset 18
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parent 15
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child 55
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permissions
-rw-r--r--

More renaming to eric5.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2002 - 2010 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing some startup helper funcions
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8 """
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9
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10 import os
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11 import sys
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12
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13 from PyQt4.QtCore import QTranslator, QTextCodec, QLocale, QDir, SIGNAL, SLOT, \
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14 QLibraryInfo
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15 from PyQt4.QtGui import QApplication
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16
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17 from E4Gui.E4Application import E4Application
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18
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19 import Preferences
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20 import Utilities
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21 from UI.Info import Version
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22
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23 import UI.PixmapCache
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24
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25 from eric5config import getConfig
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27
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28 def makeAppInfo(argv, name, arg, description, options = []):
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29 """
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30 Module function to generate a dictionary describing the application.
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31
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32 @param argv list of commandline parameters (list of strings)
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33 @param name name of the application (string)
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34 @param arg commandline arguments (string)
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35 @param description text describing the application (string)
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36 @param options list of additional commandline options
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37 (list of tuples of two strings (commandline option, option description)).
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38 The options --version, --help and -h are always present and must not
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39 be repeated in this list.
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40 @return dictionary describing the application
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41 """
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42 return {
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43 "bin": argv[0],
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44 "arg": arg,
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45 "name": name,
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46 "description": description,
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47 "version": Version,
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48 "options" : options
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49 }
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50
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51 def usage(appinfo, optlen = 12):
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52 """
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53 Module function to show the usage information.
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54
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55 @param appinfo dictionary describing the application
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56 @param optlen length of the field for the commandline option (integer)
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57 """
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58 options = [\
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59 ("--version", "show the program's version number and exit"),
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60 ("-h, --help", "show this help message and exit")
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61 ]
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62 options.extend(appinfo["options"])
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63
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64 print("""
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65 Usage: %(bin)s [OPTIONS] %(arg)s
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66
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67 %(name)s - %(description)s
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68
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69 Options:""" % appinfo)
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70 for opt in options:
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71 print(" %s %s" % (opt[0].ljust(optlen), opt[1]))
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72 sys.exit(0)
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73
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74 def version(appinfo):
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75 """
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76 Module function to show the version information.
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77
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78 @param appinfo dictionary describing the application
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79 """
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80 print("""
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81 %(name)s %(version)s
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82
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83 %(description)s
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84
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85 Copyright (c) 2002 - 2010 Detlev Offenbach <detlev@die-offenbachs.de>
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86 This is free software; see LICENSE.GPL3 for copying conditions.
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87 There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
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88 PARTICULAR PURPOSE.""" % appinfo)
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89 sys.exit(0)
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90
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91 def handleArgs(argv, appinfo):
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92 """
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93 Module function to handle the always present commandline options.
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94
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95 @param argv list of commandline parameters (list of strings)
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96 @param appinfo dictionary describing the application
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97 @return index of the '--' option (integer). This is used to tell
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98 the application, that all additional option don't belong to
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99 the application.
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100 """
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101 ddindex = 30000 # arbitrarily large number
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102 args = {
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103 "--version": version,
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104 "--help": usage,
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105 "-h": usage
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106 }
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107 if '--' in argv:
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108 ddindex = argv.index("--")
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109 for a in args:
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110 if a in argv and argv.index(a) < ddindex:
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111 args[a](appinfo)
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112 return ddindex
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113
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114 def loadTranslatorForLocale(dirs, tn):
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115 """
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116 Module function to find and load a specific translation.
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117
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118 @param dirs Searchpath for the translations. (list of strings)
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119 @param tn The translation to be loaded. (string)
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120 @return Tuple of a status flag and the loaded translator. (int, QTranslator)
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121 """
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122 trans = QTranslator(None)
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123 for dir in dirs:
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124 loaded = trans.load(tn, dir)
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125 if loaded:
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126 return (trans, True)
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127
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128 print("Warning: translation file '" + tn + "'could not be loaded.")
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129 print("Using default.")
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130 return (None, False)
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131
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132 def initializeResourceSearchPath():
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133 """
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134 Module function to initialize the default mime source factory.
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135 """
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136 defaultIconPath = os.path.join(getConfig('ericIconDir'), "default")
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137 iconPaths = Preferences.getIcons("Path")
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138 for iconPath in iconPaths:
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139 if iconPath:
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140 UI.PixmapCache.addSearchPath(iconPath)
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141 if not defaultIconPath in iconPaths:
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142 UI.PixmapCache.addSearchPath(defaultIconPath)
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143
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144 # the translator must not be deleted, therefore we save them here
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145 loaded_translators = {}
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146
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147 def loadTranslators(qtTransDir, app, translationFiles = ()):
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148 """
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149 Module function to load all required translations.
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150
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151 @param qtTransDir directory of the Qt translations files (string)
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152 @param app reference to the application object (QApplication)
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153 @param translationFiles tuple of additional translations to
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154 be loaded (tuple of strings)
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155 @return the requested locale (string)
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156 """
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157 translations = ("qt", "eric5") + translationFiles
0
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158 loc = Preferences.getUILanguage()
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159 if loc is None:
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160 return
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161
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162 if loc == "System":
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163 loc = QLocale.system().name()
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164 if loc != "C":
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165 dirs = [getConfig('ericTranslationsDir'), Utilities.getConfigDir()]
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166 if qtTransDir is not None:
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167 dirs.append(qtTransDir)
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168
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169 loca = loc
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170 for tf in ["%s_%s" % (tr, loc) for tr in translations]:
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171 translator, ok = loadTranslatorForLocale(dirs, tf)
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172 loaded_translators[tf] = translator
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173 if ok:
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174 app.installTranslator(translator)
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175 else:
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176 if tf.startswith("eric5"):
0
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177 loca = None
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178 loc = loca
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179 else:
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180 loc = None
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parents:
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181 return loc
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182
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diff changeset
183 def simpleAppStartup(argv, appinfo, mwFactory, quitOnLastWindowClosed = True):
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parents:
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184 """
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parents:
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185 Module function to start up an application that doesn't need a specialized start up.
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186
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187 This function is used by all of eric5's helper programs.
0
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188
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189 @param argv list of commandline parameters (list of strings)
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190 @param appinfo dictionary describing the application
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parents:
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191 @param mwFactory factory function generating the main widget. This
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diff changeset
192 function must accept the following parameter.
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193 <dl>
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194 <dt>argv</dt>
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195 <dd>list of commandline parameters (list of strings)</dd>
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196 </dl>
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197 @keyparam quitOnLastWindowClosed flag indicating to quit the application,
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198 if the last window was closed (boolean)
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parents:
diff changeset
199 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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200 ddindex = handleArgs(argv, appinfo)
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parents:
diff changeset
201 app = E4Application(argv)
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parents:
diff changeset
202 app.setQuitOnLastWindowClosed(quitOnLastWindowClosed)
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parents:
diff changeset
203 try:
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parents:
diff changeset
204 sys.setappdefaultencoding(Preferences.getSystem("StringEncoding"))
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parents:
diff changeset
205 except AttributeError:
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parents:
diff changeset
206 pass
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parents:
diff changeset
207
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parents:
diff changeset
208 initializeResourceSearchPath()
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parents:
diff changeset
209 QApplication.setWindowIcon(UI.PixmapCache.getIcon("eric.png"))
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parents:
diff changeset
210
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parents:
diff changeset
211 qt4TransDir = Preferences.getQt4TranslationsDir()
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parents:
diff changeset
212 if not qt4TransDir:
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parents:
diff changeset
213 qt4TransDir = QLibraryInfo.location(QLibraryInfo.TranslationsPath)
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parents:
diff changeset
214 loadTranslators(qt4TransDir, app)
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parents:
diff changeset
215
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
216 QTextCodec.setCodecForCStrings(\
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parents:
diff changeset
217 QTextCodec.codecForName(Preferences.getSystem("StringEncoding"))
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
218 )
de9c2efb9d02 Started porting eric4 to Python3
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
219
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parents:
diff changeset
220 w = mwFactory(argv)
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parents:
diff changeset
221 app.connect(app, SIGNAL("lastWindowClosed()"), app, SLOT("quit()"))
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
222 w.show()
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parents:
diff changeset
223
15
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diff changeset
224 return app.exec_()

eric ide

mercurial