############################################################################# ## ## 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." ## ## $QT_END_LICENSE$ ## ############################################################################# import pickle 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): NavigationMode, AddingMode, EditingMode = range(3) def __init__(self, parent=None): super(AddressBook, self).__init__(parent) self.contacts = SortedDict() self.oldName = '' self.oldAddress = '' self.currentMode = self.NavigationMode 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.editButton = QtWidgets.QPushButton("&Edit") self.editButton.setEnabled(False) self.removeButton = QtWidgets.QPushButton("&Remove") self.removeButton.setEnabled(False) self.findButton = QtWidgets.QPushButton("&Find") self.findButton.setEnabled(False) 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.loadButton = QtWidgets.QPushButton("&Load...") self.loadButton.setToolTip("Load contacts from a file") self.saveButton = QtWidgets.QPushButton("Sa&ve...") self.saveButton.setToolTip("Save contacts to a file") self.saveButton.setEnabled(False) self.dialog = FindDialog() self.addButton.clicked.connect(self.addContact) self.submitButton.clicked.connect(self.submitContact) self.editButton.clicked.connect(self.editContact) self.removeButton.clicked.connect(self.removeContact) self.findButton.clicked.connect(self.findContact) self.cancelButton.clicked.connect(self.cancel) self.nextButton.clicked.connect(self.next) self.previousButton.clicked.connect(self.previous) self.loadButton.clicked.connect(self.loadFromFile) self.saveButton.clicked.connect(self.saveToFile) buttonLayout1 = QtWidgets.QVBoxLayout() buttonLayout1.addWidget(self.addButton) buttonLayout1.addWidget(self.editButton) buttonLayout1.addWidget(self.removeButton) buttonLayout1.addWidget(self.findButton) buttonLayout1.addWidget(self.submitButton) buttonLayout1.addWidget(self.cancelButton) buttonLayout1.addWidget(self.loadButton) buttonLayout1.addWidget(self.saveButton) 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, 2, 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.updateInterface(self.AddingMode) def editContact(self): self.oldName = self.nameLine.text() self.oldAddress = self.addressText.toPlainText() self.updateInterface(self.EditingMode) 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 self.currentMode == self.AddingMode: 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 elif self.currentMode == self.EditingMode: if self.oldName != name: if name not in self.contacts: QtWidgets.QMessageBox.information(self, "Edit Successful", "\"%s\" has been edited in your address book." % self.oldName) del self.contacts[self.oldName] self.contacts[name] = address else: QtWidgets.QMessageBox.information(self, "Edit Unsuccessful", "Sorry, \"%s\" is already in your address book." % name) return elif self.oldAddress != address: QtWidgets.QMessageBox.information(self, "Edit Successful", "\"%s\" has been edited in your address book." % name) self.contacts[name] = address self.updateInterface(self.NavigationMode) def cancel(self): self.nameLine.setText(self.oldName) self.addressText.setText(self.oldAddress) self.updateInterface(self.NavigationMode) def removeContact(self): name = self.nameLine.text() address = self.addressText.toPlainText() if name in self.contacts: button = QtWidgets.QMessageBox.question(self, "Confirm Remove", "Are you sure you want to remove \"%s\"?" % name, QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No) if button == QtWidgets.QMessageBox.Yes: self.previous() del self.contacts[name] QtWidgets.QMessageBox.information(self, "Remove Successful", "\"%s\" has been removed from your address book." % name) self.updateInterface(self.NavigationMode) 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) def findContact(self): self.dialog.show() if self.dialog.exec_() == QtWidgets.QDialog.Accepted: contactName = self.dialog.getFindText() if contactName in self.contacts: self.nameLine.setText(contactName) self.addressText.setText(self.contacts[contactName]) else: QtWidgets.QMessageBox.information(self, "Contact Not Found", "Sorry, \"%s\" is not in your address book." % contactName) return self.updateInterface(self.NavigationMode) def updateInterface(self, mode): self.currentMode = mode if self.currentMode in (self.AddingMode, self.EditingMode): self.nameLine.setReadOnly(False) self.nameLine.setFocus(QtCore.Qt.OtherFocusReason) self.addressText.setReadOnly(False) self.addButton.setEnabled(False) self.editButton.setEnabled(False) self.removeButton.setEnabled(False) self.nextButton.setEnabled(False) self.previousButton.setEnabled(False) self.submitButton.show() self.cancelButton.show() self.loadButton.setEnabled(False) self.saveButton.setEnabled(False) elif self.currentMode == self.NavigationMode: 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.editButton.setEnabled(number >= 1) self.removeButton.setEnabled(number >= 1) self.findButton.setEnabled(number > 2) self.nextButton.setEnabled(number > 1) self.previousButton.setEnabled(number >1 ) self.submitButton.hide() self.cancelButton.hide() self.loadButton.setEnabled(True) self.saveButton.setEnabled(number >= 1) def saveToFile(self): fileName,_ = QtWidgets.QFileDialog.getSaveFileName(self, "Save Address Book", '', "Address Book (*.abk);;All Files (*)") if not fileName: return try: out_file = open(str(fileName), 'wb') except IOError: QtWidgets.QMessageBox.information(self, "Unable to open file", "There was an error opening \"%s\"" % fileName) return pickle.dump(self.contacts, out_file) out_file.close() def loadFromFile(self): fileName,_ = QtWidgets.QFileDialog.getOpenFileName(self, "Open Address Book", '', "Address Book (*.abk);;All Files (*)") if not fileName: return try: in_file = open(str(fileName), 'rb') except IOError: QtWidgets.QMessageBox.information(self, "Unable to open file", "There was an error opening \"%s\"" % fileName) return self.contacts = pickle.load(in_file) in_file.close() if len(self.contacts) == 0: QtWidgets.QMessageBox.information(self, "No contacts in file", "The file you are attempting to open contains no " "contacts.") else: for name, address in self.contacts: self.nameLine.setText(name) self.addressText.setText(address) self.updateInterface(self.NavigationMode) class FindDialog(QtWidgets.QDialog): def __init__(self, parent=None): super(FindDialog, self).__init__(parent) findLabel = QtWidgets.QLabel("Enter the name of a contact:") self.lineEdit = QtWidgets.QLineEdit() self.findButton = QtWidgets.QPushButton("&Find") self.findText = '' layout = QtWidgets.QHBoxLayout() layout.addWidget(findLabel) layout.addWidget(self.lineEdit) layout.addWidget(self.findButton) self.setLayout(layout) self.setWindowTitle("Find a Contact") self.findButton.clicked.connect(self.findClicked) self.findButton.clicked.connect(self.accept) def findClicked(self): text = self.lineEdit.text() if not text: QtWidgets.QMessageBox.information(self, "Empty Field", "Please enter a name.") return self.findText = text self.lineEdit.clear() self.hide() def getFindText(self): return self.findText if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) addressBook = AddressBook() addressBook.show() sys.exit(app.exec_())