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#!/usr/bin/env python
############################################################################
#
# Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
#
# This file is part of the example classes of the Qt Toolkit.
#
# This file may be used under the terms of the GNU General Public
# License version 2.0 as published by the Free Software Foundation
# and appearing in the file LICENSE.GPL included in the packaging of
# self file. Please review the following information to ensure GNU
# General Public Licensing requirements will be met:
# http://www.trolltech.com/products/qt/opensource.html
#
# If you are unsure which license is appropriate for your use, please
# review the following information:
# http://www.trolltech.com/products/qt/licensing.html or contact the
# sales department at sales@trolltech.com.
#
# This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
# WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
############################################################################
import sys
from PyQt4 import QtCore, QtGui
import sortingmodel_rc
class TreeModel(QtCore.QAbstractItemModel):
def __init__(self, data, parent=None):
QtCore.QAbstractItemModel.__init__(self, parent)
rootData = [QtCore.QVariant("Title"), QtCore.QVariant("Summary")]
self.rootItem = TreeItem(rootData)
self.setupModelData(data.split("\n"), self.rootItem)
def columnCount(self, parent=QtCore.QModelIndex()):
if parent.isValid():
return parent.internalPointer().columnCount()
else:
return self.rootItem.columnCount()
def data(self, index, role):
if not index.isValid():
return QtCore.QVariant()
if role != QtCore.Qt.DisplayRole:
return QtCore.QVariant()
item = index.internalPointer()
return QtCore.QVariant(item.data(index.column()))
def flags(self, index):
if not index.isValid():
return QtCore.Qt.ItemIsEnabled
return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
def headerData(self, section, orientation, role = QtCore.Qt.DisplayRole):
if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
return self.rootItem.data(section)
return QtCore.QVariant()
def index(self, row, column, parent=QtCore.QModelIndex()):
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
childItem = parentItem.child(row)
if childItem:
return self.createIndex(row, column, childItem)
else:
return QtCore.QModelIndex()
def parent(self, index):
if not index.isValid():
return QtCore.QModelIndex()
childItem = index.internalPointer()
parentItem = childItem.parent()
if parentItem == self.rootItem:
return QtCore.QModelIndex()
return self.createIndex(parentItem.row(), 0, parentItem)
def rowCount(self, parent = QtCore.QModelIndex()):
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
return parentItem.childCount()
def setupModelData(self, lines, parent):
parents = [parent]
indentations = [0]
number = 0
while number < len(lines):
position = 0
while position < len(lines[number]):
if lines[number][position] != " ":
break
position += 1
lineData = lines[number][position:].trimmed()
if not lineData.isEmpty():
# Read the column data from the rest of the line.
columnStrings = lineData.split("\t", QtCore.QString.SkipEmptyParts)
columnData = []
for column in range(0, len(columnStrings)):
columnData.append(columnStrings[column])
if position > indentations[-1]:
# The last child of the current parent is now the new parent
# unless the current parent has no children.
if parents[-1].childCount() > 0:
parents.append(parents[-1].child(parents[-1].childCount() - 1))
indentations.append(position)
else:
while position < indentations[-1] and len(parents) > 0:
parents.pop()
indentations.pop()
# Append a new item to the current parent's list of children.
parents[-1].appendChild(TreeItem(columnData, parents[-1]))
number += 1
class TreeItem:
def __init__(self, data, parent=None):
self.childItems = []
self.parentItem = parent
self.itemData = data
def appendChild(self, child):
self.childItems.append(child)
def child(self, row):
return self.childItems[row]
def childCount(self):
return len(self.childItems)
def columnCount(self):
return len(self.itemData)
def data(self, column):
return self.itemData[column]
def parent(self):
return self.parentItem
def row(self):
if self.parentItem:
return self.parentItem.childItems.index(self)
return 0
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
file = QtCore.QFile(":/default.txt")
file.open(QtCore.QIODevice.ReadOnly)
model = TreeModel(QtCore.QString(file.readAll()))
file.close()
unsortedView = QtGui.QTreeView()
unsortedView.setModel(model)
unsortedView.setWindowTitle("Unsorted Data")
unsortedView.show()
sortingModel = QtGui.QSortFilterProxyModel()
sortingModel.setSourceModel(model)
sortedView = QtGui.QTreeView()
sortedView.setModel(sortingModel)
sortedView.setWindowTitle("Sorted Data")
sortedView.header().setSortIndicator(1, QtCore.Qt.AscendingOrder)
sortedView.header().setSortIndicatorShown(True)
sortedView.header().setClickable(True)
sortedView.show()
sys.exit(app.exec_())
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