eric6/E5Gui/E5TreeSortFilterProxyModel.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
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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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91e843545d9a Updated copyright for 2021.
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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 modified QSortFilterProxyModel.
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8 """
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9
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10 from PyQt5.QtCore import Qt, QModelIndex, QSortFilterProxyModel
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12
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13 class E5TreeSortFilterProxyModel(QSortFilterProxyModel):
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14 """
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15 Class implementing a modified QSortFilterProxyModel.
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16
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17 It always accepts the root nodes in the tree so filtering is only done
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18 on the children.
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19 """
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20 def __init__(self, parent=None):
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21 """
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22 Constructor
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23
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24 @param parent reference to the parent object (QObject)
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25 """
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T.Rzepka <Tobias.Rzepka@gmail.com>
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26 super(E5TreeSortFilterProxyModel, self).__init__(parent)
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28 self.setFilterCaseSensitivity(Qt.CaseInsensitive)
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29
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30 def filterAcceptsRow(self, sourceRow, sourceParent):
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31 """
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32 Public method to determine, if the row is acceptable.
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34 @param sourceRow row number in the source model (integer)
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35 @param sourceParent index of the source item (QModelIndex)
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36 @return flag indicating acceptance (boolean)
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37 """
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38 idx = self.sourceModel().index(sourceRow, 0, sourceParent)
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39 if self.sourceModel().hasChildren(idx):
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40 return True
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41
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583beaf0b4b8 Continued to shorten the code lines to max. 79 characters.
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42 return QSortFilterProxyModel.filterAcceptsRow(
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43 self, sourceRow, sourceParent)
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44
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45 def hasChildren(self, parent=None):
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46 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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47 Public method to check, if a parent node has some children.
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48
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49 @param parent index of the parent node (QModelIndex)
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50 @return flag indicating the presence of children (boolean)
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51 """
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52 if parent is None:
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53 parent = QModelIndex()
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54 sindex = self.mapToSource(parent)
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55 return self.sourceModel().hasChildren(sindex)

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