cd46a2daf5
Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
404 lines
12 KiB
C++
404 lines
12 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "addressbook.h"
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AddressBook::AddressBook(QWidget *parent)
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: QWidget(parent)
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{
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QLabel *nameLabel = new QLabel(tr("Name:"));
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nameLine = new QLineEdit;
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nameLine->setReadOnly(true);
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QLabel *addressLabel = new QLabel(tr("Address:"));
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addressText = new QTextEdit;
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addressText->setReadOnly(true);
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addButton = new QPushButton(tr("&Add"));
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editButton = new QPushButton(tr("&Edit"));
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editButton->setEnabled(false);
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removeButton = new QPushButton(tr("&Remove"));
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removeButton->setEnabled(false);
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findButton = new QPushButton(tr("&Find"));
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findButton->setEnabled(false);
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submitButton = new QPushButton(tr("&Submit"));
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submitButton->hide();
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cancelButton = new QPushButton(tr("&Cancel"));
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cancelButton->hide();
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nextButton = new QPushButton(tr("&Next"));
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nextButton->setEnabled(false);
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previousButton = new QPushButton(tr("&Previous"));
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previousButton->setEnabled(false);
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loadButton = new QPushButton(tr("&Load..."));
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//! [tooltip 1]
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loadButton->setToolTip(tr("Load contacts from a file"));
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//! [tooltip 1]
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saveButton = new QPushButton(tr("&Save..."));
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//! [tooltip 2]
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saveButton->setToolTip(tr("Save contacts to a file"));
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//! [tooltip 2]
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saveButton->setEnabled(false);
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dialog = new FindDialog(this);
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connect(addButton, SIGNAL(clicked()), this, SLOT(addContact()));
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connect(submitButton, SIGNAL(clicked()), this, SLOT(submitContact()));
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connect(editButton, SIGNAL(clicked()), this, SLOT(editContact()));
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connect(cancelButton, SIGNAL(clicked()), this, SLOT(cancel()));
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connect(removeButton, SIGNAL(clicked()), this, SLOT(removeContact()));
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connect(findButton, SIGNAL(clicked()), this, SLOT(findContact()));
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connect(nextButton, SIGNAL(clicked()), this, SLOT(next()));
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connect(previousButton, SIGNAL(clicked()), this, SLOT(previous()));
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connect(loadButton, SIGNAL(clicked()), this, SLOT(loadFromFile()));
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connect(saveButton, SIGNAL(clicked()), this, SLOT(saveToFile()));
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QVBoxLayout *buttonLayout1 = new QVBoxLayout;
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buttonLayout1->addWidget(addButton);
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buttonLayout1->addWidget(editButton);
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buttonLayout1->addWidget(removeButton);
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buttonLayout1->addWidget(findButton);
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buttonLayout1->addWidget(submitButton);
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buttonLayout1->addWidget(cancelButton);
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buttonLayout1->addWidget(loadButton);
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buttonLayout1->addWidget(saveButton);
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buttonLayout1->addStretch();
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QHBoxLayout *buttonLayout2 = new QHBoxLayout;
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buttonLayout2->addWidget(previousButton);
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buttonLayout2->addWidget(nextButton);
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QGridLayout *mainLayout = new QGridLayout;
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mainLayout->addWidget(nameLabel, 0, 0);
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mainLayout->addWidget(nameLine, 0, 1);
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mainLayout->addWidget(addressLabel, 1, 0, Qt::AlignTop);
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mainLayout->addWidget(addressText, 1, 1);
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mainLayout->addLayout(buttonLayout1, 1, 2);
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mainLayout->addLayout(buttonLayout2, 2, 1);
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setLayout(mainLayout);
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setWindowTitle(tr("Simple Address Book"));
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}
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void AddressBook::addContact()
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{
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oldName = nameLine->text();
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oldAddress = addressText->toPlainText();
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nameLine->clear();
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addressText->clear();
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updateInterface(AddingMode);
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}
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void AddressBook::editContact()
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{
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oldName = nameLine->text();
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oldAddress = addressText->toPlainText();
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updateInterface(EditingMode);
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}
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void AddressBook::submitContact()
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{
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QString name = nameLine->text();
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QString address = addressText->toPlainText();
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if (name.isEmpty() || address.isEmpty()) {
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QMessageBox::information(this, tr("Empty Field"),
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tr("Please enter a name and address."));
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return;
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}
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if (currentMode == AddingMode) {
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if (!contacts.contains(name)) {
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contacts.insert(name, address);
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QMessageBox::information(this, tr("Add Successful"),
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tr("\"%1\" has been added to your address book.").arg(name));
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} else {
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QMessageBox::information(this, tr("Add Unsuccessful"),
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tr("Sorry, \"%1\" is already in your address book.").arg(name));
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}
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} else if (currentMode == EditingMode) {
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if (oldName != name) {
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if (!contacts.contains(name)) {
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QMessageBox::information(this, tr("Edit Successful"),
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tr("\"%1\" has been edited in your address book.").arg(oldName));
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contacts.remove(oldName);
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contacts.insert(name, address);
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} else {
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QMessageBox::information(this, tr("Edit Unsuccessful"),
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tr("Sorry, \"%1\" is already in your address book.").arg(name));
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}
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} else if (oldAddress != address) {
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QMessageBox::information(this, tr("Edit Successful"),
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tr("\"%1\" has been edited in your address book.").arg(name));
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contacts[name] = address;
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}
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}
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updateInterface(NavigationMode);
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}
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void AddressBook::cancel()
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{
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nameLine->setText(oldName);
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addressText->setText(oldAddress);
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updateInterface(NavigationMode);
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}
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void AddressBook::removeContact()
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{
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QString name = nameLine->text();
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QString address = addressText->toPlainText();
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if (contacts.contains(name)) {
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int button = QMessageBox::question(this,
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tr("Confirm Remove"),
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tr("Are you sure you want to remove \"%1\"?").arg(name),
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QMessageBox::Yes | QMessageBox::No);
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if (button == QMessageBox::Yes) {
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previous();
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contacts.remove(name);
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QMessageBox::information(this, tr("Remove Successful"),
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tr("\"%1\" has been removed from your address book.").arg(name));
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}
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}
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updateInterface(NavigationMode);
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}
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void AddressBook::next()
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{
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QString name = nameLine->text();
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QMap<QString, QString>::iterator i = contacts.find(name);
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if (i != contacts.end())
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i++;
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if (i == contacts.end())
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i = contacts.begin();
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nameLine->setText(i.key());
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addressText->setText(i.value());
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}
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void AddressBook::previous()
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{
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QString name = nameLine->text();
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QMap<QString, QString>::iterator i = contacts.find(name);
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if (i == contacts.end()) {
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nameLine->clear();
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addressText->clear();
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return;
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}
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if (i == contacts.begin())
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i = contacts.end();
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i--;
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nameLine->setText(i.key());
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addressText->setText(i.value());
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}
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void AddressBook::findContact()
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{
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dialog->show();
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if (dialog->exec() == 1) {
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QString contactName = dialog->getFindText();
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if (contacts.contains(contactName)) {
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nameLine->setText(contactName);
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addressText->setText(contacts.value(contactName));
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} else {
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QMessageBox::information(this, tr("Contact Not Found"),
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tr("Sorry, \"%1\" is not in your address book.").arg(contactName));
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return;
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}
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}
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updateInterface(NavigationMode);
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}
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void AddressBook::updateInterface(Mode mode)
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{
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currentMode = mode;
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switch (currentMode) {
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case AddingMode:
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case EditingMode:
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nameLine->setReadOnly(false);
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nameLine->setFocus(Qt::OtherFocusReason);
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addressText->setReadOnly(false);
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addButton->setEnabled(false);
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editButton->setEnabled(false);
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removeButton->setEnabled(false);
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nextButton->setEnabled(false);
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previousButton->setEnabled(false);
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submitButton->show();
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cancelButton->show();
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loadButton->setEnabled(false);
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saveButton->setEnabled(false);
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break;
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case NavigationMode:
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if (contacts.isEmpty()) {
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nameLine->clear();
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addressText->clear();
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}
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nameLine->setReadOnly(true);
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addressText->setReadOnly(true);
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addButton->setEnabled(true);
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int number = contacts.size();
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editButton->setEnabled(number >= 1);
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removeButton->setEnabled(number >= 1);
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findButton->setEnabled(number > 2);
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nextButton->setEnabled(number > 1);
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previousButton->setEnabled(number > 1);
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submitButton->hide();
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cancelButton->hide();
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loadButton->setEnabled(true);
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saveButton->setEnabled(number >= 1);
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break;
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}
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}
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//! [saveToFile() function part1]
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void AddressBook::saveToFile()
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{
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QString fileName = QFileDialog::getSaveFileName(this,
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tr("Save Address Book"), "",
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tr("Address Book (*.abk);;All Files (*)"));
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//! [saveToFile() function part1]
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//! [saveToFile() function part2]
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if (fileName.isEmpty())
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return;
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else {
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QFile file(fileName);
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if (!file.open(QIODevice::WriteOnly)) {
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QMessageBox::information(this, tr("Unable to open file"),
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file.errorString());
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return;
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}
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//! [saveToFile() function part2]
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//! [saveToFile() function part3]
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QDataStream out(&file);
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out.setVersion(QDataStream::Qt_4_5);
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out << contacts;
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}
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}
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//! [saveToFile() function part3]
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//! [loadFromFile() function part1]
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void AddressBook::loadFromFile()
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{
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QString fileName = QFileDialog::getOpenFileName(this,
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tr("Open Address Book"), "",
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tr("Address Book (*.abk);;All Files (*)"));
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//! [loadFromFile() function part1]
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//! [loadFromFile() function part2]
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if (fileName.isEmpty())
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return;
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else {
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QFile file(fileName);
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if (!file.open(QIODevice::ReadOnly)) {
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QMessageBox::information(this, tr("Unable to open file"),
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file.errorString());
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return;
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}
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QDataStream in(&file);
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in.setVersion(QDataStream::Qt_4_5);
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contacts.clear(); // clear existing contacts
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in >> contacts;
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//! [loadFromFile() function part2]
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//! [loadFromFile() function part3]
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if (contacts.isEmpty()) {
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QMessageBox::information(this, tr("No contacts in file"),
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tr("The file you are attempting to open contains no contacts."));
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} else {
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QMap<QString, QString>::iterator i = contacts.begin();
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nameLine->setText(i.key());
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addressText->setText(i.value());
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}
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}
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updateInterface(NavigationMode);
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}
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//! [loadFromFile() function part3]
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