Helpviewer/QtHelpFiltersDialog.py

Sat, 28 Sep 2013 20:07:36 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 28 Sep 2013 20:07:36 +0200
changeset 2954
bf0215fe12d1
parent 2579
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child 2999
28c75409a78f
permissions
-rw-r--r--

Continued correcting doc strings by using the new doc string checker.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 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 to manage the QtHelp filters.
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8 """
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9
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10 import sqlite3
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11
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12 from PyQt4.QtCore import pyqtSlot, Qt
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13 from PyQt4.QtGui import QDialog, QTreeWidgetItem, QListWidgetItem, QInputDialog, QLineEdit
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14 from PyQt4.QtHelp import QHelpEngineCore
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15
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1d8dd9706f46 First commit after changing to Python 3.1.
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16 from .Ui_QtHelpFiltersDialog import Ui_QtHelpFiltersDialog
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17
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18
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19 class QtHelpFiltersDialog(QDialog, Ui_QtHelpFiltersDialog):
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20 """
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21 Class implementing a dialog to manage the QtHelp filters.
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22 """
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23 def __init__(self, engine, parent=None):
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24 """
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25 Constructor
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26
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27 @param engine reference to the help engine (QHelpEngine)
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28 @param parent reference to the parent widget (QWidget)
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29 """
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30 super().__init__(parent)
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31 self.setupUi(self)
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32
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33 self.__engine = engine
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34
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35 self.attributesList.header().hide()
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36
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37 self.filtersList.clear()
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38 self.attributesList.clear()
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39
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40 help = QHelpEngineCore(self.__engine.collectionFile())
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41 help.setupData()
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42
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43 self.__removedFilters = []
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44 self.__filterMap = {}
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45 self.__filterMapBackup = {}
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46 self.__removedAttributes = []
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47
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48 for filter in help.customFilters():
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49 atts = help.filterAttributes(filter)
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50 self.__filterMapBackup[filter] = atts
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51 if filter not in self.__filterMap:
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52 self.__filterMap[filter] = atts
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53
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54 self.filtersList.addItems(sorted(self.__filterMap.keys()))
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55 for attr in help.filterAttributes():
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56 QTreeWidgetItem(self.attributesList, [attr])
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57
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58 if self.__filterMap:
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59 self.filtersList.setCurrentRow(0)
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60
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61 @pyqtSlot(QListWidgetItem, QListWidgetItem)
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62 def on_filtersList_currentItemChanged(self, current, previous):
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63 """
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64 Private slot to update the attributes depending on the current filter.
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65
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66 @param current reference to the current item (QListWidgetitem)
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67 @param previous reference to the previous current item (QListWidgetItem)
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68 """
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69 checkedList = []
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70 if current is not None:
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71 checkedList = self.__filterMap[current.text()]
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72 for index in range(0, self.attributesList.topLevelItemCount()):
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73 itm = self.attributesList.topLevelItem(index)
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74 if itm.text(0) in checkedList:
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75 itm.setCheckState(0, Qt.Checked)
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76 else:
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77 itm.setCheckState(0, Qt.Unchecked)
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78
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79 @pyqtSlot(QTreeWidgetItem, int)
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80 def on_attributesList_itemChanged(self, item, column):
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81 """
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82 Private slot to handle a change of an attribute.
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83
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84 @param item reference to the changed item (QTreeWidgetItem)
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85 @param column column containing the change (integer)
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86 """
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87 if self.filtersList.currentItem() is None:
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88 return
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89
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90 filter = self.filtersList.currentItem().text()
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91 if filter not in self.__filterMap:
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92 return
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93
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94 newAtts = []
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95 for index in range(0, self.attributesList.topLevelItemCount()):
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96 itm = self.attributesList.topLevelItem(index)
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97 if itm.checkState(0) == Qt.Checked:
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98 newAtts.append(itm.text(0))
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99 self.__filterMap[filter] = newAtts
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100
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101 @pyqtSlot()
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102 def on_addButton_clicked(self):
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103 """
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104 Private slot to add a new filter.
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105 """
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106 filter, ok = QInputDialog.getText(
0
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107 None,
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108 self.trUtf8("Add Filter"),
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109 self.trUtf8("Filter name:"),
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110 QLineEdit.Normal)
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111 if not filter:
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112 return
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113
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114 if filter not in self.__filterMap:
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115 self.__filterMap[filter] = []
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116 self.filtersList.addItem(filter)
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117
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118 itm = self.filtersList.findItems(filter, Qt.MatchCaseSensitive)[0]
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119 self.filtersList.setCurrentItem(itm)
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120
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121 @pyqtSlot()
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122 def on_removeButton_clicked(self):
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123 """
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124 Private slot to remove a filter.
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125 """
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126 row = self.filtersList.currentRow()
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127 itm = self.filtersList.takeItem(row)
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128 if itm is None:
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129 return
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130
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131 del self.__filterMap[itm.text()]
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132 self.__removedFilters.append(itm.text())
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133 del itm
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134 if self.filtersList.count():
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135 self.filtersList.setCurrentRow(row)
0
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136
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137 @pyqtSlot()
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138 def on_removeAttributeButton_clicked(self):
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139 """
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140 Private slot to remove a filter attribute.
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141 """
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142 itm = self.attributesList.takeTopLevelItem(
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143 self.attributesList.indexOfTopLevelItem(
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144 self.attributesList.currentItem()))
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145 if itm is None:
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146 return
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147
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148 attr = itm.text(0)
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149 self.__removedAttributes.append(attr)
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150 for filter in self.__filterMap:
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151 if attr in self.__filterMap[filter]:
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152 self.__filterMap[filter].remove(attr)
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153
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154 del itm
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155
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156 def __removeAttributes(self):
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157 """
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158 Private method to remove attributes from the Qt Help database.
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159 """
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160 try:
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161 self.__db = sqlite3.connect(self.__engine.collectionFile())
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162 except sqlite3.DatabaseError:
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163 pass # ignore database errors
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164
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165 for attr in self.__removedAttributes:
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166 self.__db.execute(
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167 "DELETE FROM FilterAttributeTable WHERE Name = '{0}'".format(attr))
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168 self.__db.commit()
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169 self.__db.close()
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170
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171 @pyqtSlot()
0
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172 def on_buttonBox_accepted(self):
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173 """
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174 Private slot to update the database, if the dialog is accepted.
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175 """
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176 filtersChanged = False
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177 if len(self.__filterMapBackup) != len(self.__filterMap):
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178 filtersChanged = True
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179 else:
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180 for filter in self.__filterMapBackup:
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181 if filter not in self.__filterMap:
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182 filtersChanged = True
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183 else:
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184 oldFilterAtts = self.__filterMapBackup[filter]
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185 newFilterAtts = self.__filterMap[filter]
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186 if len(oldFilterAtts) != len(newFilterAtts):
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187 filtersChanged = True
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188 else:
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189 for attr in oldFilterAtts:
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190 if attr not in newFilterAtts:
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191 filtersChanged = True
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192 break
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193
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194 if filtersChanged:
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195 break
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196
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197 if filtersChanged:
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198 for filter in self.__removedFilters:
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199 self.__engine.removeCustomFilter(filter)
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200 for filter in self.__filterMap:
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201 self.__engine.addCustomFilter(filter, self.__filterMap[filter])
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202
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203 if self.__removedAttributes:
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204 self.__removeAttributes()
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205
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206 if filtersChanged or self.__removedAttributes:
0
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207 self.__engine.setupData()
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208
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209 self.accept()

eric ide

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