E5Gui/E5TreeSortFilterProxyModel.py

Fri, 31 Dec 2010 15:49:50 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Fri, 31 Dec 2010 15:49:50 +0100
changeset 791
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parent 55
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child 945
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child 1510
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permissions
-rw-r--r--

Updated copyright notice.

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b5c84934de9c Renamed E4Gui to E5Gui.
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1 # -*- coding: utf-8 -*-
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2
791
9ec2ac20e54e Updated copyright notice.
Detlev Offenbach <detlev@die-offenbachs.de>
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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 modified QSortFilterProxyModel.
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8 """
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9
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10 from PyQt4.QtCore import Qt, QModelIndex
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11 from PyQt4.QtGui import 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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26 QSortFilterProxyModel.__init__(self, parent)
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27
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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 Protected method to determine, if the row is acceptable.
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33
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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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42 return QSortFilterProxyModel.filterAcceptsRow(self, sourceRow, sourceParent)
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43
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44 def hasChildren(self, parent = QModelIndex()):
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45 """
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46 Public method to check, if a parent node has some children.
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47
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48 @param parent index of the parent node (QModelIndex)
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49 @return flag indicating the presence of children (boolean)
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50 """
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51 sindex = self.mapToSource(parent)
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52 return self.sourceModel().hasChildren(sindex)

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