PluginManager/PluginUninstallDialog.py

Tue, 02 Oct 2012 19:53:31 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Tue, 02 Oct 2012 19:53:31 +0200
changeset 2087
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parent 1509
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child 2101
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child 2303
0ed4ed026c16
permissions
-rw-r--r--

Made the sixth set of Qt5 compatibility changes.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2007 - 2012 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, QMainWindow
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17
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18 from E5Gui import E5MessageBox
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19
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20 from .PluginManager import PluginManager
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21 from .Ui_PluginUninstallDialog import Ui_PluginUninstallDialog
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23
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24 class PluginUninstallWidget(QWidget, Ui_PluginUninstallDialog):
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25 """
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26 Class implementing a dialog for plugin deinstallation.
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27 """
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28 accepted = pyqtSignal()
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29
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30 def __init__(self, pluginManager, parent=None):
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31 """
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32 Constructor
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33
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34 @param pluginManager reference to the plugin manager object
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35 @param parent parent of this dialog (QWidget)
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36 """
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37 super().__init__(parent)
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38 self.setupUi(self)
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39
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40 if pluginManager is None:
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41 # started as external plugin deinstaller
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42 self.__pluginManager = PluginManager(doLoadPlugins=False)
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43 self.__external = True
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44 else:
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45 self.__pluginManager = pluginManager
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46 self.__external = False
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47
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48 self.pluginDirectoryCombo.addItem(self.trUtf8("User plugins directory"),
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49 self.__pluginManager.getPluginDir("user"))
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50
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51 globalDir = self.__pluginManager.getPluginDir("global")
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52 if globalDir is not None and os.access(globalDir, os.W_OK):
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53 self.pluginDirectoryCombo.addItem(self.trUtf8("Global plugins directory"),
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54 globalDir)
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55
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56 @pyqtSlot(int)
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57 def on_pluginDirectoryCombo_currentIndexChanged(self, index):
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58 """
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59 Private slot to populate the plugin name combo upon a change of the
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60 plugin area.
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61
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62 @param index index of the selected item (integer)
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63 """
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64 pluginDirectory = self.pluginDirectoryCombo\
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65 .itemData(index)
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66 pluginNames = sorted(self.__pluginManager.getPluginModules(pluginDirectory))
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67 self.pluginNameCombo.clear()
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68 for pluginName in pluginNames:
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69 fname = "{0}.py".format(os.path.join(pluginDirectory, pluginName))
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70 self.pluginNameCombo.addItem(pluginName, fname)
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71 self.buttonBox.button(QDialogButtonBox.Ok)\
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72 .setEnabled(self.pluginNameCombo.currentText() != "")
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73
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74 @pyqtSlot()
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75 def on_buttonBox_accepted(self):
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76 """
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77 Private slot to handle the accepted signal of the button box.
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78 """
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79 if self.__uninstallPlugin():
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80 self.accepted.emit()
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81
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82 def __uninstallPlugin(self):
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83 """
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84 Private slot to uninstall the selected plugin.
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85
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86 @return flag indicating success (boolean)
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87 """
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88 pluginDirectory = self.pluginDirectoryCombo\
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89 .itemData(self.pluginDirectoryCombo.currentIndex())
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90 pluginName = self.pluginNameCombo.currentText()
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91 pluginFile = self.pluginNameCombo\
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92 .itemData(self.pluginNameCombo.currentIndex())
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93
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94 if not self.__pluginManager.unloadPlugin(pluginName, pluginDirectory):
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95 E5MessageBox.critical(self,
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96 self.trUtf8("Plugin Uninstallation"),
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97 self.trUtf8("""<p>The plugin <b>{0}</b> could not be unloaded."""
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98 """ Aborting...</p>""").format(pluginName))
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99 return False
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100
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101 if not pluginDirectory in sys.path:
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102 sys.path.insert(2, pluginDirectory)
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103 module = imp.load_source(pluginName, pluginFile)
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104 if not hasattr(module, "packageName"):
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105 E5MessageBox.critical(self,
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106 self.trUtf8("Plugin Uninstallation"),
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107 self.trUtf8("""<p>The plugin <b>{0}</b> has no 'packageName' attribute."""
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108 """ Aborting...</p>""").format(pluginName))
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109 return False
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110
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111 package = getattr(module, "packageName")
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112 if package is None:
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113 package = "None"
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114 packageDir = ""
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115 else:
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116 packageDir = os.path.join(pluginDirectory, package)
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117 if hasattr(module, "prepareUninstall"):
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118 module.prepareUninstall()
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119 internalPackages = []
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120 if hasattr(module, "internalPackages"):
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121 # it is a comma separated string
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122 internalPackages = [p.strip() for p in module.internalPackages.split(",")]
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123 del module
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124
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125 # clean sys.modules
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126 self.__pluginManager.removePluginFromSysModules(
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127 pluginName, package, internalPackages)
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128
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129 try:
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130 if packageDir and os.path.exists(packageDir):
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131 shutil.rmtree(packageDir)
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132
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133 fnameo = "{0}o".format(pluginFile)
0
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134 if os.path.exists(fnameo):
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135 os.remove(fnameo)
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136
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137 fnamec = "{0}c".format(pluginFile)
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138 if os.path.exists(fnamec):
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139 os.remove(fnamec)
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140
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141 os.remove(pluginFile)
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142 except OSError as err:
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143 E5MessageBox.critical(self,
0
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144 self.trUtf8("Plugin Uninstallation"),
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145 self.trUtf8("""<p>The plugin package <b>{0}</b> could not be"""
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146 """ removed. Aborting...</p>"""
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147 """<p>Reason: {1}</p>""").format(packageDir, str(err)))
0
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148 return False
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149
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150 E5MessageBox.information(self,
0
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151 self.trUtf8("Plugin Uninstallation"),
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152 self.trUtf8("""<p>The plugin <b>{0}</b> was uninstalled successfully"""
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153 """ from {1}.</p>""")\
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154 .format(pluginName, pluginDirectory))
0
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155 return True
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156
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157
0
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158 class PluginUninstallDialog(QDialog):
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159 """
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160 Class for the dialog variant.
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161 """
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162 def __init__(self, pluginManager, parent=None):
0
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163 """
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164 Constructor
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165
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166 @param pluginManager reference to the plugin manager object
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167 @param parent reference to the parent widget (QWidget)
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168 """
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169 super().__init__(parent)
0
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170 self.setSizeGripEnabled(True)
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171
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172 self.__layout = QVBoxLayout(self)
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173 self.__layout.setMargin(0)
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174 self.setLayout(self.__layout)
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175
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176 self.cw = PluginUninstallWidget(pluginManager, self)
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177 size = self.cw.size()
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178 self.__layout.addWidget(self.cw)
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179 self.resize(size)
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180
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181 self.cw.buttonBox.accepted[()].connect(self.accept)
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182 self.cw.buttonBox.rejected[()].connect(self.reject)
0
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183
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184
0
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185 class PluginUninstallWindow(QMainWindow):
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186 """
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187 Main window class for the standalone dialog.
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188 """
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189 def __init__(self, parent=None):
0
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190 """
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191 Constructor
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192
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193 @param parent reference to the parent widget (QWidget)
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194 """
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195 super().__init__(parent)
0
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196 self.cw = PluginUninstallWidget(None, self)
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197 size = self.cw.size()
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198 self.setCentralWidget(self.cw)
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199 self.resize(size)
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200
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201 self.cw.buttonBox.accepted[()].connect(self.close)
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202 self.cw.buttonBox.rejected[()].connect(self.close)

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