#!/usr/bin/env python ############################################################################# ## ## Copyright (C) 2013 Riverbank Computing Limited. ## Copyright (C) 2016 The Qt Company Ltd. ## Contact: http://www.qt.io/licensing/ ## ## This file is part of the Qt for Python examples of the Qt Toolkit. ## ## $QT_BEGIN_LICENSE:BSD$ ## You may use this file under the terms of the BSD license as follows: ## ## "Redistribution and use in source and binary forms, with or without ## modification, are permitted provided that the following conditions are ## met: ## * Redistributions of source code must retain the above copyright ## notice, this list of conditions and the following disclaimer. ## * Redistributions in binary form must reproduce the above copyright ## notice, this list of conditions and the following disclaimer in ## the documentation and/or other materials provided with the ## distribution. ## * Neither the name of The Qt Company Ltd nor the names of its ## contributors may be used to endorse or promote products derived ## from this software without specific prior written permission. ## ## ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ## ## $QT_END_LICENSE$ ## ############################################################################# from PySide2 import QtCore, QtGui, QtWidgets class SortedDict(dict): class Iterator(object): def __init__(self, sorted_dict): self._dict = sorted_dict self._keys = sorted(self._dict.keys()) self._nr_items = len(self._keys) self._idx = 0 def __iter__(self): return self def next(self): if self._idx >= self._nr_items: raise StopIteration key = self._keys[self._idx] value = self._dict[key] self._idx += 1 return key, value __next__ = next def __iter__(self): return SortedDict.Iterator(self) iterkeys = __iter__ class AddressBook(QtWidgets.QWidget): def __init__(self, parent=None): super(AddressBook, self).__init__(parent) self.contacts = SortedDict() self.oldName = '' self.oldAddress = '' nameLabel = QtWidgets.QLabel("Name:") self.nameLine = QtWidgets.QLineEdit() self.nameLine.setReadOnly(True) addressLabel = QtWidgets.QLabel("Address:") self.addressText = QtWidgets.QTextEdit() self.addressText.setReadOnly(True) self.addButton = QtWidgets.QPushButton("&Add") self.addButton.show() self.submitButton = QtWidgets.QPushButton("&Submit") self.submitButton.hide() self.cancelButton = QtWidgets.QPushButton("&Cancel") self.cancelButton.hide() self.nextButton = QtWidgets.QPushButton("&Next") self.nextButton.setEnabled(False) self.previousButton = QtWidgets.QPushButton("&Previous") self.previousButton.setEnabled(False) self.addButton.clicked.connect(self.addContact) self.submitButton.clicked.connect(self.submitContact) self.cancelButton.clicked.connect(self.cancel) self.nextButton.clicked.connect(self.next) self.previousButton.clicked.connect(self.previous) buttonLayout1 = QtWidgets.QVBoxLayout() buttonLayout1.addWidget(self.addButton, QtCore.Qt.AlignTop) buttonLayout1.addWidget(self.submitButton) buttonLayout1.addWidget(self.cancelButton) buttonLayout1.addStretch() buttonLayout2 = QtWidgets.QHBoxLayout() buttonLayout2.addWidget(self.previousButton) buttonLayout2.addWidget(self.nextButton) mainLayout = QtWidgets.QGridLayout() mainLayout.addWidget(nameLabel, 0, 0) mainLayout.addWidget(self.nameLine, 0, 1) mainLayout.addWidget(addressLabel, 1, 0, QtCore.Qt.AlignTop) mainLayout.addWidget(self.addressText, 1, 1) mainLayout.addLayout(buttonLayout1, 1, 2) mainLayout.addLayout(buttonLayout2, 3, 1) self.setLayout(mainLayout) self.setWindowTitle("Simple Address Book") def addContact(self): self.oldName = self.nameLine.text() self.oldAddress = self.addressText.toPlainText() self.nameLine.clear() self.addressText.clear() self.nameLine.setReadOnly(False) self.nameLine.setFocus(QtCore.Qt.OtherFocusReason) self.addressText.setReadOnly(False) self.addButton.setEnabled(False) self.nextButton.setEnabled(False) self.previousButton.setEnabled(False) self.submitButton.show() self.cancelButton.show() def submitContact(self): name = self.nameLine.text() address = self.addressText.toPlainText() if name == "" or address == "": QtWidgets.QMessageBox.information(self, "Empty Field", "Please enter a name and address.") return if name not in self.contacts: self.contacts[name] = address QtWidgets.QMessageBox.information(self, "Add Successful", "\"%s\" has been added to your address book." % name) else: QtWidgets.QMessageBox.information(self, "Add Unsuccessful", "Sorry, \"%s\" is already in your address book." % name) return if not self.contacts: self.nameLine.clear() self.addressText.clear() self.nameLine.setReadOnly(True) self.addressText.setReadOnly(True) self.addButton.setEnabled(True) number = len(self.contacts) self.nextButton.setEnabled(number > 1) self.previousButton.setEnabled(number > 1) self.submitButton.hide() self.cancelButton.hide() def cancel(self): self.nameLine.setText(self.oldName) self.addressText.setText(self.oldAddress) if not self.contacts: self.nameLine.clear() self.addressText.clear() self.nameLine.setReadOnly(True) self.addressText.setReadOnly(True) self.addButton.setEnabled(True) number = len(self.contacts) self.nextButton.setEnabled(number > 1) self.previousButton.setEnabled(number > 1) self.submitButton.hide() self.cancelButton.hide() def next(self): name = self.nameLine.text() it = iter(self.contacts) try: while True: this_name, _ = it.next() if this_name == name: next_name, next_address = it.next() break except StopIteration: next_name, next_address = iter(self.contacts).next() self.nameLine.setText(next_name) self.addressText.setText(next_address) def previous(self): name = self.nameLine.text() prev_name = prev_address = None for this_name, this_address in self.contacts: if this_name == name: break prev_name = this_name prev_address = this_address else: self.nameLine.clear() self.addressText.clear() return if prev_name is None: for prev_name, prev_address in self.contacts: pass self.nameLine.setText(prev_name) self.addressText.setText(prev_address) if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) addressBook = AddressBook() addressBook.show() sys.exit(app.exec_())