Helpviewer/QtHelpFiltersDialog.py

Fri, 11 Mar 2011 16:51:57 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Fri, 11 Mar 2011 16:51:57 +0100
changeset 945
8cd4d08fa9f6
parent 791
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child 1112
8a7d1b9d18db
permissions
-rw-r--r--

Made code mostly PEP 8 compliant (except all whitespace and line length).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2011 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 PyQt4.QtGui import *
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11 from PyQt4.QtCore import *
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12 from PyQt4.QtHelp import QHelpEngineCore
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13
12
1d8dd9706f46 First commit after changing to Python 3.1.
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14 from .Ui_QtHelpFiltersDialog import Ui_QtHelpFiltersDialog
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15
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16
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17 class QtHelpFiltersDialog(QDialog, Ui_QtHelpFiltersDialog):
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18 """
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19 Class implementing a dialog to manage the QtHelp filters
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20 """
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21 def __init__(self, engine, parent=None):
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22 """
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23 Constructor
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24
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25 @param engine reference to the help engine (QHelpEngine)
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26 @param parent reference to the parent widget (QWidget)
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27 """
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28 QDialog.__init__(self, parent)
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29 self.setupUi(self)
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30
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31 self.__engine = engine
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32
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33 self.attributesList.header().hide()
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34
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35 self.filtersList.clear()
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36 self.attributesList.clear()
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37
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38 help = QHelpEngineCore(self.__engine.collectionFile())
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39 help.setupData()
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40
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41 self.__removedFilters = []
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42 self.__filterMap = {}
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43 self.__filterMapBackup = {}
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44
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45 for filter in help.customFilters():
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46 atts = help.filterAttributes(filter)
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47 self.__filterMapBackup[filter] = atts
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48 if filter not in self.__filterMap:
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49 self.__filterMap[filter] = atts
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50
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51 self.filtersList.addItems(sorted(self.__filterMap.keys()))
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52 for attr in help.filterAttributes():
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53 QTreeWidgetItem(self.attributesList, [attr])
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54
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55 if self.__filterMap:
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56 self.filtersList.setCurrentRow(0)
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57
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58 @pyqtSlot(QListWidgetItem, QListWidgetItem)
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59 def on_filtersList_currentItemChanged(self, current, previous):
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60 """
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61 Private slot to update the attributes depending on the current filter.
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62
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63 @param current reference to the current item (QListWidgetitem)
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64 @param previous reference to the previous current item (QListWidgetItem)
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65 """
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66 checkedList = []
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67 if current is not None:
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68 checkedList = self.__filterMap[current.text()]
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69 for index in range(0, self.attributesList.topLevelItemCount()):
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70 itm = self.attributesList.topLevelItem(index)
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71 if itm.text(0) in checkedList:
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72 itm.setCheckState(0, Qt.Checked)
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73 else:
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74 itm.setCheckState(0, Qt.Unchecked)
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75
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76 @pyqtSlot(QTreeWidgetItem, int)
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77 def on_attributesList_itemChanged(self, item, column):
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78 """
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79 Private slot to handle a change of an attribute.
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80
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81 @param item reference to the changed item (QTreeWidgetItem)
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82 @param column column containing the change (integer)
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83 """
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84 if self.filtersList.currentItem() is None:
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85 return
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86
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87 filter = self.filtersList.currentItem().text()
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88 if filter not in self.__filterMap:
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89 return
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90
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91 newAtts = []
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92 for index in range(0, self.attributesList.topLevelItemCount()):
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93 itm = self.attributesList.topLevelItem(index)
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94 if itm.checkState(0) == Qt.Checked:
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95 newAtts.append(itm.text(0))
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96 self.__filterMap[filter] = newAtts
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97
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98 @pyqtSlot()
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99 def on_addButton_clicked(self):
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100 """
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101 Private slot to add a new filter.
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102 """
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103 filter, ok = QInputDialog.getText(
0
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104 None,
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105 self.trUtf8("Add Filter"),
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106 self.trUtf8("Filter name:"),
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107 QLineEdit.Normal)
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108 if not filter:
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109 return
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110
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111 if filter not in self.__filterMap:
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112 self.__filterMap[filter] = []
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113 self.filtersList.addItem(filter)
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114
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115 itm = self.filtersList.findItems(filter, Qt.MatchCaseSensitive)[0]
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116 self.filtersList.setCurrentItem(itm)
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117
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118 @pyqtSlot()
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119 def on_removeButton_clicked(self):
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120 """
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121 Private slot to remove a filter.
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122 """
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123 itm = self.filtersList.takeItem(self.filtersList.currentRow())
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124 if itm is None:
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125 return
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126
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127 del self.__filterMap[itm.text()]
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128 self.__removedFilters.append(itm.text())
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129 del itm
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130 if self.filtersList.count():
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131 self.filtersList.setCurrentRow(0)
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132
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133 @pyqtSlot()
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134 def on_buttonBox_accepted(self):
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135 """
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136 Private slot to update the database, if the dialog is accepted.
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137 """
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138 filtersChanged = False
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139 if len(self.__filterMapBackup) != len(self.__filterMap):
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140 filtersChanged = True
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141 else:
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142 for filter in self.__filterMapBackup:
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143 if filter not in self.__filterMap:
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144 filtersChanged = True
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145 else:
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146 oldFilterAtts = self.__filterMapBackup[filter]
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147 newFilterAtts = self.__filterMap[filter]
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148 if len(oldFilterAtts) != len(newFilterAtts):
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149 filtersChanged = True
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150 else:
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151 for attr in oldFilterAtts:
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152 if attr not in newFilterAtts:
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153 filtersChanged = True
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154 break
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155
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156 if filtersChanged:
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157 break
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158
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159 if filtersChanged:
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Detlev Offenbach <detlev@die-offenbachs.de>
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160 for filter in self.__removedFilters:
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Detlev Offenbach <detlev@die-offenbachs.de>
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161 self.__engine.removeCustomFilter(filter)
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162 for filter in self.__filterMap:
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163 self.__engine.addCustomFilter(filter, self.__filterMap[filter])
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164
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165 self.__engine.setupData()
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166
945
8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
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parents: 791
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167 self.accept()

eric ide

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