PluginManager/PluginUninstallDialog.py

Sun, 23 Jun 2013 13:12:38 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sun, 23 Jun 2013 13:12:38 +0200
changeset 2736
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parent 2404
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child 2525
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child 2824
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permissions
-rw-r--r--

Added a wizard for the Qt5 QRegularExpression class.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2007 - 2013 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 a dialog for plugin deinstallation.
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8 """
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9
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10 import sys
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11 import os
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12 import imp
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13 import shutil
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14
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15 from PyQt4.QtCore import pyqtSlot, pyqtSignal
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16 from PyQt4.QtGui import QWidget, QDialog, QDialogButtonBox, QVBoxLayout
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17
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18 from E5Gui import E5MessageBox
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19 from E5Gui.E5MainWindow import E5MainWindow
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20 from E5Gui.E5Application import e5App
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21
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22 from .Ui_PluginUninstallDialog import Ui_PluginUninstallDialog
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23
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24 import Preferences
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25 import UI.PixmapCache
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26
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27
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28 class PluginUninstallWidget(QWidget, Ui_PluginUninstallDialog):
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29 """
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30 Class implementing a dialog for plugin deinstallation.
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31 """
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32 accepted = pyqtSignal()
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33
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34 def __init__(self, pluginManager, parent=None):
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35 """
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36 Constructor
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37
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38 @param pluginManager reference to the plugin manager object
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39 @param parent parent of this dialog (QWidget)
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40 """
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41 super().__init__(parent)
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42 self.setupUi(self)
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43
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44 if pluginManager is None:
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45 # started as external plugin deinstaller
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46 from .PluginManager import PluginManager
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47 self.__pluginManager = PluginManager(doLoadPlugins=False)
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48 self.__external = True
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49 else:
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50 self.__pluginManager = pluginManager
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51 self.__external = False
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52
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53 self.pluginDirectoryCombo.addItem(self.trUtf8("User plugins directory"),
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54 self.__pluginManager.getPluginDir("user"))
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55
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56 globalDir = self.__pluginManager.getPluginDir("global")
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57 if globalDir is not None and os.access(globalDir, os.W_OK):
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58 self.pluginDirectoryCombo.addItem(self.trUtf8("Global plugins directory"),
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59 globalDir)
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60
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61 @pyqtSlot(int)
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62 def on_pluginDirectoryCombo_currentIndexChanged(self, index):
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63 """
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64 Private slot to populate the plugin name combo upon a change of the
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65 plugin area.
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66
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67 @param index index of the selected item (integer)
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68 """
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69 pluginDirectory = self.pluginDirectoryCombo\
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70 .itemData(index)
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71 pluginNames = sorted(self.__pluginManager.getPluginModules(pluginDirectory))
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72 self.pluginNameCombo.clear()
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73 for pluginName in pluginNames:
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74 fname = "{0}.py".format(os.path.join(pluginDirectory, pluginName))
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75 self.pluginNameCombo.addItem(pluginName, fname)
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76 self.buttonBox.button(QDialogButtonBox.Ok)\
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77 .setEnabled(self.pluginNameCombo.currentText() != "")
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78
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79 @pyqtSlot()
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80 def on_buttonBox_accepted(self):
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81 """
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82 Private slot to handle the accepted signal of the button box.
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83 """
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84 if self.__uninstallPlugin():
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85 self.accepted.emit()
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86
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87 def __uninstallPlugin(self):
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88 """
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89 Private slot to uninstall the selected plugin.
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90
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91 @return flag indicating success (boolean)
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92 """
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93 pluginDirectory = self.pluginDirectoryCombo\
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94 .itemData(self.pluginDirectoryCombo.currentIndex())
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95 pluginName = self.pluginNameCombo.currentText()
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96 pluginFile = self.pluginNameCombo\
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97 .itemData(self.pluginNameCombo.currentIndex())
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98
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99 if not self.__pluginManager.unloadPlugin(pluginName, pluginDirectory):
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100 E5MessageBox.critical(self,
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101 self.trUtf8("Plugin Uninstallation"),
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102 self.trUtf8("""<p>The plugin <b>{0}</b> could not be unloaded."""
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103 """ Aborting...</p>""").format(pluginName))
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104 return False
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105
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106 if not pluginDirectory in sys.path:
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107 sys.path.insert(2, pluginDirectory)
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108 module = imp.load_source(pluginName, pluginFile)
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109 if not hasattr(module, "packageName"):
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110 E5MessageBox.critical(self,
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111 self.trUtf8("Plugin Uninstallation"),
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112 self.trUtf8("""<p>The plugin <b>{0}</b> has no 'packageName' attribute."""
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113 """ Aborting...</p>""").format(pluginName))
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114 return False
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115
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116 package = getattr(module, "packageName")
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117 if package is None:
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118 package = "None"
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119 packageDir = ""
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120 else:
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121 packageDir = os.path.join(pluginDirectory, package)
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122 if hasattr(module, "prepareUninstall"):
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123 module.prepareUninstall()
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124 internalPackages = []
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125 if hasattr(module, "internalPackages"):
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126 # it is a comma separated string
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127 internalPackages = [p.strip() for p in module.internalPackages.split(",")]
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128 del module
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129
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130 # clean sys.modules
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131 self.__pluginManager.removePluginFromSysModules(
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132 pluginName, package, internalPackages)
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133
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134 try:
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135 if packageDir and os.path.exists(packageDir):
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136 shutil.rmtree(packageDir)
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137
415
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138 fnameo = "{0}o".format(pluginFile)
0
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139 if os.path.exists(fnameo):
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140 os.remove(fnameo)
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141
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142 fnamec = "{0}c".format(pluginFile)
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143 if os.path.exists(fnamec):
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144 os.remove(fnamec)
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145
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146 os.remove(pluginFile)
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147 except OSError as err:
537
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148 E5MessageBox.critical(self,
0
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149 self.trUtf8("Plugin Uninstallation"),
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150 self.trUtf8("""<p>The plugin package <b>{0}</b> could not be"""
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151 """ removed. Aborting...</p>"""
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152 """<p>Reason: {1}</p>""").format(packageDir, str(err)))
0
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153 return False
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154
2192
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155 if not self.__external:
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156 ui = e5App().getObject("UserInterface")
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157 if ui.notificationsEnabled():
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158 ui.showNotification(UI.PixmapCache.getPixmap("plugin48.png"),
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159 self.trUtf8("Plugin Uninstallation"),
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160 self.trUtf8("""<p>The plugin <b>{0}</b> was uninstalled successfully"""
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161 """ from {1}.</p>""")\
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162 .format(pluginName, pluginDirectory))
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163 return True
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164
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165 E5MessageBox.information(self,
0
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166 self.trUtf8("Plugin Uninstallation"),
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167 self.trUtf8("""<p>The plugin <b>{0}</b> was uninstalled successfully"""
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168 """ from {1}.</p>""")\
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169 .format(pluginName, pluginDirectory))
0
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170 return True
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171
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172
0
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173 class PluginUninstallDialog(QDialog):
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174 """
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175 Class for the dialog variant.
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176 """
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177 def __init__(self, pluginManager, parent=None):
0
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178 """
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179 Constructor
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180
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181 @param pluginManager reference to the plugin manager object
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182 @param parent reference to the parent widget (QWidget)
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183 """
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184 super().__init__(parent)
0
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185 self.setSizeGripEnabled(True)
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186
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187 self.__layout = QVBoxLayout(self)
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188 self.__layout.setMargin(0)
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189 self.setLayout(self.__layout)
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190
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191 self.cw = PluginUninstallWidget(pluginManager, self)
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192 size = self.cw.size()
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193 self.__layout.addWidget(self.cw)
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194 self.resize(size)
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195
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196 self.cw.buttonBox.accepted[()].connect(self.accept)
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197 self.cw.buttonBox.rejected[()].connect(self.reject)
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198
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199
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200 class PluginUninstallWindow(E5MainWindow):
0
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201 """
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202 Main window class for the standalone dialog.
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203 """
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204 def __init__(self, parent=None):
0
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205 """
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206 Constructor
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207
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208 @param parent reference to the parent widget (QWidget)
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209 """
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210 super().__init__(parent)
0
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211 self.cw = PluginUninstallWidget(None, self)
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212 size = self.cw.size()
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213 self.setCentralWidget(self.cw)
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214 self.resize(size)
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215
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216 self.setStyle(Preferences.getUI("Style"), Preferences.getUI("StyleSheet"))
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217
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218 self.cw.buttonBox.accepted[()].connect(self.close)
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219 self.cw.buttonBox.rejected[()].connect(self.close)

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