eric6/WebBrowser/OpenSearch/OpenSearchEngineModel.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
169e65a6787c
parent 7923
91e843545d9a
child 8143
2c730d5fd177
permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2021 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 model for search engines.
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8 """
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9
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10 import re
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11
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12 from PyQt5.QtCore import Qt, QUrl, QAbstractTableModel, QModelIndex
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13 from PyQt5.QtGui import QPixmap, QIcon
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14
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15
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16 class OpenSearchEngineModel(QAbstractTableModel):
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17 """
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18 Class implementing a model for search engines.
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19 """
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20 def __init__(self, manager, parent=None):
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21 """
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22 Constructor
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23
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24 @param manager reference to the search engine manager
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25 (OpenSearchManager)
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26 @param parent reference to the parent object (QObject)
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27 """
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28 super(OpenSearchEngineModel, self).__init__(parent)
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29
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30 self.__manager = manager
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31 manager.changed.connect(self.__enginesChanged)
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32
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33 self.__headers = [
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34 self.tr("Name"),
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35 self.tr("Keywords"),
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36 ]
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37
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38 def removeRows(self, row, count, parent=None):
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39 """
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40 Public method to remove entries from the model.
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41
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42 @param row start row (integer)
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43 @param count number of rows to remove (integer)
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44 @param parent parent index (QModelIndex)
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45 @return flag indicating success (boolean)
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46 """
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47 if parent is None:
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48 parent = QModelIndex()
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49
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50 if parent.isValid():
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51 return False
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52
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53 if count <= 0:
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54 return False
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55
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56 if self.rowCount() <= 1:
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57 return False
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58
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59 lastRow = row + count - 1
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60
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61 self.beginRemoveRows(parent, row, lastRow)
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62
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63 nameList = self.__manager.allEnginesNames()
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64 for index in range(row, lastRow + 1):
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65 self.__manager.removeEngine(nameList[index])
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66
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67 return True
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68
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69 def rowCount(self, parent=None):
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70 """
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71 Public method to get the number of rows of the model.
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72
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73 @param parent parent index (QModelIndex)
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74 @return number of rows (integer)
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75 """
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76 if parent is None:
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77 parent = QModelIndex()
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78
0
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79 if parent.isValid():
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80 return 0
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81 else:
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82 return self.__manager.enginesCount()
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83
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84 def columnCount(self, parent=None):
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85 """
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86 Public method to get the number of columns of the model.
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87
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88 @param parent parent index (QModelIndex) (Unused)
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89 @return number of columns (integer)
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90 """
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91 return 2
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92
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93 def flags(self, index):
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94 """
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95 Public method to get flags for a model cell.
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96
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97 @param index index of the model cell (QModelIndex)
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98 @return flags (Qt.ItemFlags)
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99 """
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100 if index.column() == 1:
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101 return Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsEditable
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102 else:
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103 return Qt.ItemIsEnabled | Qt.ItemIsSelectable
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104
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105 def data(self, index, role):
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106 """
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107 Public method to get data from the model.
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108
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109 @param index index to get data for (QModelIndex)
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110 @param role role of the data to retrieve (integer)
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111 @return requested data
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112 """
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113 if index.row() >= self.__manager.enginesCount() or index.row() < 0:
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114 return None
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115
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116 engine = self.__manager.engine(
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117 self.__manager.allEnginesNames()[index.row()])
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118
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119 if engine is None:
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120 return None
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121
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122 if index.column() == 0:
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123 if role == Qt.DisplayRole:
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124 return engine.name()
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125
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126 elif role == Qt.DecorationRole:
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127 image = engine.image()
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128 if image.isNull():
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129 from WebBrowser.WebBrowserWindow import WebBrowserWindow
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130 icon = WebBrowserWindow.icon(QUrl(engine.imageUrl()))
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131 else:
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132 icon = QIcon(QPixmap.fromImage(image))
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133 return icon
0
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134
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135 elif role == Qt.ToolTipRole:
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136 description = self.tr(
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137 "<strong>Description:</strong> {0}"
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138 ).format(engine.description())
0
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139 if engine.providesSuggestions():
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140 description += "<br/>"
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141 description += self.tr(
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142 "<strong>Provides contextual suggestions</strong>")
0
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143
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144 return description
0
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145 elif index.column() == 1:
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146 if role in [Qt.EditRole, Qt.DisplayRole]:
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147 return ",".join(self.__manager.keywordsForEngine(engine))
0
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148 elif role == Qt.ToolTipRole:
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149 return self.tr(
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150 "Comma-separated list of keywords that may"
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151 " be entered in the location bar followed by search terms"
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152 " to search with this engine")
0
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153
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154 return None
0
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155
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156 def setData(self, index, value, role=Qt.EditRole):
0
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157 """
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158 Public method to set the data of a model cell.
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159
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160 @param index index of the model cell (QModelIndex)
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161 @param value value to be set
0
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162 @param role role of the data (integer)
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163 @return flag indicating success (boolean)
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164 """
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165 if not index.isValid() or index.column() != 1:
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166 return False
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167
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168 if index.row() >= self.rowCount() or index.row() < 0:
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169 return False
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170
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171 if role != Qt.EditRole:
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172 return False
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173
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174 engineName = self.__manager.allEnginesNames()[index.row()]
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175 keywords = re.split("[ ,]+", value)
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176 self.__manager.setKeywordsForEngine(
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177 self.__manager.engine(engineName), keywords)
0
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178
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179 return True
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180
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181 def headerData(self, section, orientation, role=Qt.DisplayRole):
0
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182 """
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183 Public method to get the header data.
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184
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185 @param section section number (integer)
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186 @param orientation header orientation (Qt.Orientation)
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187 @param role data role (integer)
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188 @return header data
0
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189 """
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190 if orientation == Qt.Horizontal and role == Qt.DisplayRole:
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191 try:
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192 return self.__headers[section]
0
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193 except IndexError:
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194 pass
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195
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196 return None
0
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197
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198 def __enginesChanged(self):
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199 """
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200 Private slot handling a change of the registered engines.
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201 """
3656
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202 self.beginResetModel()
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203 self.endResetModel()

eric ide

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