Helpviewer/QtHelpFiltersDialog.py

Mon, 25 Mar 2013 03:11:06 +0100

author
T.Rzepka <Tobias.Rzepka@gmail.com>
date
Mon, 25 Mar 2013 03:11:06 +0100
branch
Py2 comp.
changeset 2525
8b507a9a2d40
parent 2302
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child 2677
3d4277929fb3
permissions
-rw-r--r--

Script changes: Future import added, super calls modified and unicode behavior for str.

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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 from __future__ import unicode_literals # __IGNORE_WARNING__
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11
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12 import sqlite3
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13
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8a7d1b9d18db Improved code quality by getting rid of star imports. That way pyflakes can do its job. A few bugs fixed found by flakes.
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14 from PyQt4.QtCore import pyqtSlot, Qt
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15 from PyQt4.QtGui import QDialog, QTreeWidgetItem, QListWidgetItem, QInputDialog, QLineEdit
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16 from PyQt4.QtHelp import QHelpEngineCore
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17
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1d8dd9706f46 First commit after changing to Python 3.1.
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18 from .Ui_QtHelpFiltersDialog import Ui_QtHelpFiltersDialog
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19
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20
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21 class QtHelpFiltersDialog(QDialog, Ui_QtHelpFiltersDialog):
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22 """
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23 Class implementing a dialog to manage the QtHelp filters
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24 """
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25 def __init__(self, engine, parent=None):
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26 """
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27 Constructor
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28
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29 @param engine reference to the help engine (QHelpEngine)
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30 @param parent reference to the parent widget (QWidget)
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31 """
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32 super(QtHelpFiltersDialog, self).__init__(parent)
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33 self.setupUi(self)
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34
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35 self.__engine = engine
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36
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37 self.attributesList.header().hide()
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38
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39 self.filtersList.clear()
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40 self.attributesList.clear()
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41
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42 help = QHelpEngineCore(self.__engine.collectionFile())
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43 help.setupData()
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44
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45 self.__removedFilters = []
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46 self.__filterMap = {}
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47 self.__filterMapBackup = {}
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48 self.__removedAttributes = []
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49
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50 for filter in help.customFilters():
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51 atts = help.filterAttributes(filter)
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52 self.__filterMapBackup[filter] = atts
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53 if filter not in self.__filterMap:
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54 self.__filterMap[filter] = atts
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55
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56 self.filtersList.addItems(sorted(self.__filterMap.keys()))
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57 for attr in help.filterAttributes():
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58 QTreeWidgetItem(self.attributesList, [attr])
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59
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60 if self.__filterMap:
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61 self.filtersList.setCurrentRow(0)
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62
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63 @pyqtSlot(QListWidgetItem, QListWidgetItem)
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64 def on_filtersList_currentItemChanged(self, current, previous):
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65 """
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66 Private slot to update the attributes depending on the current filter.
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67
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68 @param current reference to the current item (QListWidgetitem)
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69 @param previous reference to the previous current item (QListWidgetItem)
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70 """
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71 checkedList = []
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72 if current is not None:
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73 checkedList = self.__filterMap[current.text()]
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74 for index in range(0, self.attributesList.topLevelItemCount()):
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75 itm = self.attributesList.topLevelItem(index)
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76 if itm.text(0) in checkedList:
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77 itm.setCheckState(0, Qt.Checked)
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78 else:
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79 itm.setCheckState(0, Qt.Unchecked)
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80
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81 @pyqtSlot(QTreeWidgetItem, int)
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82 def on_attributesList_itemChanged(self, item, column):
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83 """
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84 Private slot to handle a change of an attribute.
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85
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86 @param item reference to the changed item (QTreeWidgetItem)
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87 @param column column containing the change (integer)
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88 """
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89 if self.filtersList.currentItem() is None:
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90 return
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91
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92 filter = self.filtersList.currentItem().text()
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93 if filter not in self.__filterMap:
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94 return
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95
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96 newAtts = []
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97 for index in range(0, self.attributesList.topLevelItemCount()):
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98 itm = self.attributesList.topLevelItem(index)
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99 if itm.checkState(0) == Qt.Checked:
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100 newAtts.append(itm.text(0))
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101 self.__filterMap[filter] = newAtts
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102
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103 @pyqtSlot()
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104 def on_addButton_clicked(self):
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105 """
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106 Private slot to add a new filter.
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107 """
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108 filter, ok = QInputDialog.getText(
0
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109 None,
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110 self.trUtf8("Add Filter"),
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111 self.trUtf8("Filter name:"),
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112 QLineEdit.Normal)
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113 if not filter:
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114 return
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115
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116 if filter not in self.__filterMap:
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117 self.__filterMap[filter] = []
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118 self.filtersList.addItem(filter)
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119
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120 itm = self.filtersList.findItems(filter, Qt.MatchCaseSensitive)[0]
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121 self.filtersList.setCurrentItem(itm)
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122
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123 @pyqtSlot()
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124 def on_removeButton_clicked(self):
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125 """
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126 Private slot to remove a filter.
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127 """
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128 itm = self.filtersList.takeItem(self.filtersList.currentRow())
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129 if itm is None:
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130 return
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131
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132 del self.__filterMap[itm.text()]
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133 self.__removedFilters.append(itm.text())
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134 del itm
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135 if self.filtersList.count():
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136 self.filtersList.setCurrentRow(0)
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137
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138 @pyqtSlot()
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139 def on_removeAttributeButton_clicked(self):
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140 """
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141 Private slot to remove a filter attribute.
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142 """
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143 itm = self.attributesList.takeTopLevelItem(
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144 self.attributesList.indexOfTopLevelItem(
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145 self.attributesList.currentItem()))
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146 if itm is None:
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147 return
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148
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149 attr = itm.text(0)
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150 self.__removedAttributes.append(attr)
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151 for filter in self.__filterMap:
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152 if attr in self.__filterMap[filter]:
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153 self.__filterMap[filter].remove(attr)
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154
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155 del itm
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156
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157 def __removeAttributes(self):
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158 """
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159 Private method to remove attributes from the Qt Help database.
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160 """
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161 try:
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162 self.__db = sqlite3.connect(self.__engine.collectionFile())
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163 except sqlite3.DatabaseError:
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164 pass # ignore database errors
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165
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166 for attr in self.__removedAttributes:
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167 self.__db.execute(
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168 "DELETE FROM FilterAttributeTable WHERE Name = '{0}'".format(attr))
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169 self.__db.commit()
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170 self.__db.close()
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171
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172 @pyqtSlot()
0
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173 def on_buttonBox_accepted(self):
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174 """
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175 Private slot to update the database, if the dialog is accepted.
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176 """
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177 filtersChanged = False
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178 if len(self.__filterMapBackup) != len(self.__filterMap):
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179 filtersChanged = True
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180 else:
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181 for filter in self.__filterMapBackup:
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182 if filter not in self.__filterMap:
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183 filtersChanged = True
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184 else:
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185 oldFilterAtts = self.__filterMapBackup[filter]
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186 newFilterAtts = self.__filterMap[filter]
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187 if len(oldFilterAtts) != len(newFilterAtts):
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188 filtersChanged = True
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189 else:
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190 for attr in oldFilterAtts:
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191 if attr not in newFilterAtts:
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192 filtersChanged = True
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193 break
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194
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195 if filtersChanged:
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196 break
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197
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198 if filtersChanged:
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199 for filter in self.__removedFilters:
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200 self.__engine.removeCustomFilter(filter)
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201 for filter in self.__filterMap:
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202 self.__engine.addCustomFilter(filter, self.__filterMap[filter])
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203
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204 if self.__removedAttributes:
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205 self.__removeAttributes()
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206
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207 if filtersChanged or self.__removedAttributes:
0
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208 self.__engine.setupData()
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209
945
8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
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210 self.accept()

eric ide

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