#!/usr/bin/env python
 
 
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
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## This file is part of the examples of PyQt.
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##     the documentation and/or other materials provided with the
##     distribution.
##   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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##     products derived from this software without specific prior written
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from PyQt5.QtCore import (QDate, QDateTime, QRegExp, QSortFilterProxyModel, Qt,
        QTime)
from PyQt5.QtGui import QStandardItemModel
from PyQt5.QtWidgets import (QApplication, QCheckBox, QComboBox, QGridLayout,
        QGroupBox, QHBoxLayout, QLabel, QLineEdit, QTreeView, QVBoxLayout,
        QWidget)
 
 
SUBJECT, SENDER, DATE = range(3)
 
# Work around the fact that QSortFilterProxyModel always filters datetime
# values in QtCore.Qt.ISODate format, but the tree views display using
# QtCore.Qt.DefaultLocaleShortDate format.
class SortFilterProxyModel(QSortFilterProxyModel):
    def filterAcceptsRow(self, sourceRow, sourceParent):
        # Do we filter for the date column?
        if self.filterKeyColumn() == DATE:
            # Fetch datetime value.
            index = self.sourceModel().index(sourceRow, DATE, sourceParent)
            data = self.sourceModel().data(index)
 
            # Return, if regExp match in displayed format.
            return (self.filterRegExp().indexIn(data.toString(Qt.DefaultLocaleShortDate)) >= 0)
 
        # Not our business.
        return super(SortFilterProxyModel, self).filterAcceptsRow(sourceRow, sourceParent)
 
 
class Window(QWidget):
    def __init__(self):
        super(Window, self).__init__()
 
        self.proxyModel = SortFilterProxyModel()
        self.proxyModel.setDynamicSortFilter(True)
 
        self.sourceGroupBox = QGroupBox("Original Model")
        self.proxyGroupBox = QGroupBox("Sorted/Filtered Model")
 
        self.sourceView = QTreeView()
        self.sourceView.setRootIsDecorated(False)
        self.sourceView.setAlternatingRowColors(True)
 
        self.proxyView = QTreeView()
        self.proxyView.setRootIsDecorated(False)
        self.proxyView.setAlternatingRowColors(True)
        self.proxyView.setModel(self.proxyModel)
        self.proxyView.setSortingEnabled(True)
 
        self.sortCaseSensitivityCheckBox = QCheckBox("Case sensitive sorting")
        self.filterCaseSensitivityCheckBox = QCheckBox("Case sensitive filter")
 
        self.filterPatternLineEdit = QLineEdit()
        self.filterPatternLabel = QLabel("&Filter pattern:")
        self.filterPatternLabel.setBuddy(self.filterPatternLineEdit)
 
        self.filterSyntaxComboBox = QComboBox()
        self.filterSyntaxComboBox.addItem("Regular expression", QRegExp.RegExp)
        self.filterSyntaxComboBox.addItem("Wildcard", QRegExp.Wildcard)
        self.filterSyntaxComboBox.addItem("Fixed string", QRegExp.FixedString)
        self.filterSyntaxLabel = QLabel("Filter &syntax:")
        self.filterSyntaxLabel.setBuddy(self.filterSyntaxComboBox)
 
        self.filterColumnComboBox = QComboBox()
        self.filterColumnComboBox.addItem("Subject")
        self.filterColumnComboBox.addItem("Sender")
        self.filterColumnComboBox.addItem("Date")
        self.filterColumnLabel = QLabel("Filter &column:")
        self.filterColumnLabel.setBuddy(self.filterColumnComboBox)
 
        self.filterPatternLineEdit.textChanged.connect(self.filterRegExpChanged)
        self.filterSyntaxComboBox.currentIndexChanged.connect(self.filterRegExpChanged)
        self.filterColumnComboBox.currentIndexChanged.connect(self.filterColumnChanged)
        self.filterCaseSensitivityCheckBox.toggled.connect(self.filterRegExpChanged)
        self.sortCaseSensitivityCheckBox.toggled.connect(self.sortChanged)
 
        sourceLayout = QHBoxLayout()
        sourceLayout.addWidget(self.sourceView)
        self.sourceGroupBox.setLayout(sourceLayout)
 
        proxyLayout = QGridLayout()
        proxyLayout.addWidget(self.proxyView, 0, 0, 1, 3)
        proxyLayout.addWidget(self.filterPatternLabel, 1, 0)
        proxyLayout.addWidget(self.filterPatternLineEdit, 1, 1, 1, 2)
        proxyLayout.addWidget(self.filterSyntaxLabel, 2, 0)
        proxyLayout.addWidget(self.filterSyntaxComboBox, 2, 1, 1, 2)
        proxyLayout.addWidget(self.filterColumnLabel, 3, 0)
        proxyLayout.addWidget(self.filterColumnComboBox, 3, 1, 1, 2)
        proxyLayout.addWidget(self.filterCaseSensitivityCheckBox, 4, 0, 1, 2)
        proxyLayout.addWidget(self.sortCaseSensitivityCheckBox, 4, 2)
        self.proxyGroupBox.setLayout(proxyLayout)
 
        mainLayout = QVBoxLayout()
        mainLayout.addWidget(self.sourceGroupBox)
        mainLayout.addWidget(self.proxyGroupBox)
        self.setLayout(mainLayout)
 
        self.setWindowTitle("Basic Sort/Filter Model")
        self.resize(500, 450)
 
        self.proxyView.sortByColumn(SENDER, Qt.AscendingOrder)
        self.filterColumnComboBox.setCurrentIndex(SENDER)
 
        self.filterPatternLineEdit.setText("Andy|Grace")
        self.filterCaseSensitivityCheckBox.setChecked(True)
        self.sortCaseSensitivityCheckBox.setChecked(True)
 
    def setSourceModel(self, model):
        self.proxyModel.setSourceModel(model)
        self.sourceView.setModel(model)
 
    def filterRegExpChanged(self):
        syntax_nr = self.filterSyntaxComboBox.itemData(self.filterSyntaxComboBox.currentIndex())
        syntax = QRegExp.PatternSyntax(syntax_nr)
 
        if self.filterCaseSensitivityCheckBox.isChecked():
            caseSensitivity = Qt.CaseSensitive
        else:
            caseSensitivity = Qt.CaseInsensitive
 
        regExp = QRegExp(self.filterPatternLineEdit.text(),
                caseSensitivity, syntax)
        self.proxyModel.setFilterRegExp(regExp)
 
    def filterColumnChanged(self):
        self.proxyModel.setFilterKeyColumn(self.filterColumnComboBox.currentIndex())
 
    def sortChanged(self):
        if self.sortCaseSensitivityCheckBox.isChecked():
            caseSensitivity = Qt.CaseSensitive
        else:
            caseSensitivity = Qt.CaseInsensitive
 
        self.proxyModel.setSortCaseSensitivity(caseSensitivity)
 
 
def addMail(model, subject, sender, date):
    model.insertRow(0)
    model.setData(model.index(0, SUBJECT), subject)
    model.setData(model.index(0, SENDER), sender)
    model.setData(model.index(0, DATE), date)
 
 
def createMailModel(parent):
    model = QStandardItemModel(0, 3, parent)
 
    model.setHeaderData(SUBJECT, Qt.Horizontal, "Subject")
    model.setHeaderData(SENDER, Qt.Horizontal, "Sender")
    model.setHeaderData(DATE, Qt.Horizontal, "Date")
 
    addMail(model, "Happy New Year!", "Grace K. <grace@software-inc.com>",
            QDateTime(QDate(2006, 12, 31), QTime(17, 3)))
    addMail(model, "Radically new concept", "Grace K. <grace@software-inc.com>",
            QDateTime(QDate(2006, 12, 22), QTime(9, 44)))
    addMail(model, "Accounts", "pascale@nospam.com",
            QDateTime(QDate(2006, 12, 31), QTime(12, 50)))
    addMail(model, "Expenses", "Joe Bloggs <joe@bloggs.com>",
            QDateTime(QDate(2006, 12, 25), QTime(11, 39)))
    addMail(model, "Re: Expenses", "Andy <andy@nospam.com>",
            QDateTime(QDate(2007, 1, 2), QTime(16, 5)))
    addMail(model, "Re: Accounts", "Joe Bloggs <joe@bloggs.com>",
            QDateTime(QDate(2007, 1, 3), QTime(14, 18)))
    addMail(model, "Re: Accounts", "Andy <andy@nospam.com>",
            QDateTime(QDate(2007, 1, 3), QTime(14, 26)))
    addMail(model, "Sports", "Linda Smith <linda.smith@nospam.com>",
            QDateTime(QDate(2007, 1, 5), QTime(11, 33)))
    addMail(model, "AW: Sports", "Rolf Newschweinstein <rolfn@nospam.com>",
            QDateTime(QDate(2007, 1, 5), QTime(12, 0)))
    addMail(model, "RE: Sports", "Petra Schmidt <petras@nospam.com>",
            QDateTime(QDate(2007, 1, 5), QTime(12, 1)))
 
    return model
 
 
if __name__ == '__main__':
 
    import sys
 
    app = QApplication(sys.argv)
    window = Window()
    window.setSourceModel(createMailModel(window))
    window.show()
    sys.exit(app.exec_())