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Diffstat (limited to 'examples/widgets/tutorials/addressbook/part6.py')
| -rw-r--r-- | examples/widgets/tutorials/addressbook/part6.py | 394 |
1 files changed, 0 insertions, 394 deletions
diff --git a/examples/widgets/tutorials/addressbook/part6.py b/examples/widgets/tutorials/addressbook/part6.py deleted file mode 100644 index 73dcd067d..000000000 --- a/examples/widgets/tutorials/addressbook/part6.py +++ /dev/null @@ -1,394 +0,0 @@ -# Copyright (C) 2013 Riverbank Computing Limited. -# Copyright (C) 2022 The Qt Company Ltd. -# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause -from __future__ import annotations - -import pickle -import sys - -from PySide6.QtCore import Qt, Slot -from PySide6.QtWidgets import (QApplication, QDialog, QFileDialog, - QGridLayout, QHBoxLayout, QLabel, QLineEdit, - QMessageBox, QPushButton, QTextEdit, - QVBoxLayout, QWidget) - - -class SortedDict(dict): - class Iterator: - 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(QWidget): - NavigationMode, AddingMode, EditingMode = range(3) - - def __init__(self, parent=None): - super().__init__(parent) - - self.contacts = SortedDict() - self._old_name = '' - self._old_address = '' - self._current_mode = self.NavigationMode - - name_label = QLabel("Name:") - self._name_line = QLineEdit() - self._name_line.setReadOnly(True) - - address_label = QLabel("Address:") - self._address_text = QTextEdit() - self._address_text.setReadOnly(True) - - self._add_button = QPushButton("&Add") - self._edit_button = QPushButton("&Edit") - self._edit_button.setEnabled(False) - self._remove_button = QPushButton("&Remove") - self._remove_button.setEnabled(False) - self._find_button = QPushButton("&Find") - self._find_button.setEnabled(False) - self._submit_button = QPushButton("&Submit") - self._submit_button.hide() - self._cancel_button = QPushButton("&Cancel") - self._cancel_button.hide() - - self._next_button = QPushButton("&Next") - self._next_button.setEnabled(False) - self._previous_button = QPushButton("&Previous") - self._previous_button.setEnabled(False) - - self._load_button = QPushButton("&Load...") - self._load_button.setToolTip("Load contacts from a file") - self._save_button = QPushButton("Sa&ve...") - self._save_button.setToolTip("Save contacts to a file") - self._save_button.setEnabled(False) - - self.dialog = FindDialog() - - self._add_button.clicked.connect(self.add_contact) - self._submit_button.clicked.connect(self.submit_contact) - self._edit_button.clicked.connect(self.edit_contact) - self._remove_button.clicked.connect(self.remove_contact) - self._find_button.clicked.connect(self.find_contact) - self._cancel_button.clicked.connect(self.cancel) - self._next_button.clicked.connect(self.next) - self._previous_button.clicked.connect(self.previous) - self._load_button.clicked.connect(self.load_from_file) - self._save_button.clicked.connect(self.save_to_file) - - button_layout_1 = QVBoxLayout() - button_layout_1.addWidget(self._add_button) - button_layout_1.addWidget(self._edit_button) - button_layout_1.addWidget(self._remove_button) - button_layout_1.addWidget(self._find_button) - button_layout_1.addWidget(self._submit_button) - button_layout_1.addWidget(self._cancel_button) - button_layout_1.addWidget(self._load_button) - button_layout_1.addWidget(self._save_button) - button_layout_1.addStretch() - - button_layout_2 = QHBoxLayout() - button_layout_2.addWidget(self._previous_button) - button_layout_2.addWidget(self._next_button) - - main_layout = QGridLayout() - main_layout.addWidget(name_label, 0, 0) - main_layout.addWidget(self._name_line, 0, 1) - main_layout.addWidget(address_label, 1, 0, Qt.AlignmentFlag.AlignTop) - main_layout.addWidget(self._address_text, 1, 1) - main_layout.addLayout(button_layout_1, 1, 2) - main_layout.addLayout(button_layout_2, 2, 1) - - self.setLayout(main_layout) - self.setWindowTitle("Simple Address Book") - - @Slot() - def add_contact(self): - self._old_name = self._name_line.text() - self._old_address = self._address_text.toPlainText() - - self._name_line.clear() - self._address_text.clear() - - self.update_interface(self.AddingMode) - - @Slot() - def edit_contact(self): - self._old_name = self._name_line.text() - self._old_address = self._address_text.toPlainText() - - self.update_interface(self.EditingMode) - - @Slot() - def submit_contact(self): - name = self._name_line.text() - address = self._address_text.toPlainText() - - if name == "" or address == "": - QMessageBox.information(self, "Empty Field", "Please enter a name and address.") - return - - if self._current_mode == self.AddingMode: - if name not in self.contacts: - self.contacts[name] = address - QMessageBox.information(self, "Add Successful", - f'"{name}" has been added to your address book.') - else: - QMessageBox.information(self, "Add Unsuccessful", - f'Sorry, "{name}" is already in your address book.') - return - - elif self._current_mode == self.EditingMode: - if self._old_name != name: - if name not in self.contacts: - QMessageBox.information(self, "Edit Successful", - f'"{self.oldName}" has been edited in your ' - 'address book.') - del self.contacts[self._old_name] - self.contacts[name] = address - else: - QMessageBox.information(self, "Edit Unsuccessful", - f'Sorry, "{name}" is already in your address book.') - return - elif self._old_address != address: - QMessageBox.information(self, "Edit Successful", - f'"{name}" has been edited in your address book.') - self.contacts[name] = address - - self.update_interface(self.NavigationMode) - - @Slot() - def cancel(self): - self._name_line.setText(self._old_name) - self._address_text.setText(self._old_address) - self.update_interface(self.NavigationMode) - - @Slot() - def remove_contact(self): - name = self._name_line.text() - - if name in self.contacts: - button = QMessageBox.question(self, "Confirm Remove", - f'Are you sure you want to remove "{name}"?', - QMessageBox.Yes | QMessageBox.No) - - if button == QMessageBox.Yes: - self.previous() - del self.contacts[name] - - QMessageBox.information(self, "Remove Successful", - f'"{name}" has been removed from your address book.') - - self.update_interface(self.NavigationMode) - - @Slot() - def next(self): - name = self._name_line.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._name_line.setText(next_name) - self._address_text.setText(next_address) - - @Slot() - def previous(self): - name = self._name_line.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._name_line.clear() - self._address_text.clear() - return - - if prev_name is None: - for prev_name, prev_address in self.contacts: - pass - - self._name_line.setText(prev_name) - self._address_text.setText(prev_address) - - def find_contact(self): - self.dialog.show() - - if self.dialog.exec() == QDialog.Accepted: - contact_name = self.dialog.get_find_text() - - if contact_name in self.contacts: - self._name_line.setText(contact_name) - self._address_text.setText(self.contacts[contact_name]) - else: - QMessageBox.information(self, "Contact Not Found", - f'Sorry, "{contact_name}" is not in your address book.') - return - - self.update_interface(self.NavigationMode) - - def update_interface(self, mode): - self._current_mode = mode - - if self._current_mode in (self.AddingMode, self.EditingMode): - self._name_line.setReadOnly(False) - self._name_line.setFocus(Qt.FocusReason.OtherFocusReason) - self._address_text.setReadOnly(False) - - self._add_button.setEnabled(False) - self._edit_button.setEnabled(False) - self._remove_button.setEnabled(False) - - self._next_button.setEnabled(False) - self._previous_button.setEnabled(False) - - self._submit_button.show() - self._cancel_button.show() - - self._load_button.setEnabled(False) - self._save_button.setEnabled(False) - - elif self._current_mode == self.NavigationMode: - if not self.contacts: - self._name_line.clear() - self._address_text.clear() - - self._name_line.setReadOnly(True) - self._address_text.setReadOnly(True) - self._add_button.setEnabled(True) - - number = len(self.contacts) - self._edit_button.setEnabled(number >= 1) - self._remove_button.setEnabled(number >= 1) - self._find_button.setEnabled(number > 2) - self._next_button.setEnabled(number > 1) - self._previous_button.setEnabled(number > 1) - - self._submit_button.hide() - self._cancel_button.hide() - - self._load_button.setEnabled(True) - self._save_button.setEnabled(number >= 1) - - def save_to_file(self): - fileName, _ = QFileDialog.getSaveFileName(self, - "Save Address Book", '', - "Address Book (*.abk);;All Files (*)") - - if not fileName: - return - - try: - out_file = open(str(fileName), 'wb') - except IOError: - QMessageBox.information(self, "Unable to open file", - f'There was an error opening "{fileName}"') - return - - pickle.dump(self.contacts, out_file) - out_file.close() - - def load_from_file(self): - fileName, _ = QFileDialog.getOpenFileName(self, - "Open Address Book", '', - "Address Book (*.abk);;All Files (*)") - - if not fileName: - return - - try: - in_file = open(str(fileName), 'rb') - except IOError: - QMessageBox.information(self, "Unable to open file", - f'There was an error opening "{fileName}"') - return - - self.contacts = pickle.load(in_file) - in_file.close() - - if len(self.contacts) == 0: - 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._name_line.setText(name) - self._address_text.setText(address) - - self.update_interface(self.NavigationMode) - - -class FindDialog(QDialog): - def __init__(self, parent=None): - super().__init__(parent) - - find_label = QLabel("Enter the name of a contact:") - self._line_edit = QLineEdit() - - self._find_button = QPushButton("&Find") - self._find_text = '' - - layout = QHBoxLayout() - layout.addWidget(find_label) - layout.addWidget(self._line_edit) - layout.addWidget(self._find_button) - - self.setLayout(layout) - self.setWindowTitle("Find a Contact") - - self._find_button.clicked.connect(self.find_clicked) - self._find_button.clicked.connect(self.accept) - - def find_clicked(self): - text = self._line_edit.text() - - if not text: - QMessageBox.information(self, "Empty Field", "Please enter a name.") - return - - self._find_text = text - self._line_edit.clear() - self.hide() - - def get_find_text(self): - return self._find_text - - -if __name__ == '__main__': - app = QApplication(sys.argv) - - address_book = AddressBook() - address_book.show() - - sys.exit(app.exec()) |