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<td >Qt 5.9</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-tutorials-addressbook-part4-example.html">Part 4 - Editing and Removing Addresses</a></td><td >addressbook.cpp Example File</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td>
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<h1 class="title">addressbook.cpp Example File</h1>
<span class="subtitle">tutorials/addressbook/part4/addressbook.cpp</span>
<!-- $$$tutorials/addressbook/part4/addressbook.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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<span class="preprocessor">#include <QtWidgets></span>
<span class="preprocessor">#include "addressbook.h"</span>
AddressBook<span class="operator">::</span>AddressBook(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qwidget.html">QWidget</a></span>(parent)
{
<span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>nameLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"Name:"</span>));
nameLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>;
nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>);
<span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>addressLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"Address:"</span>));
addressText <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtextedit.html">QTextEdit</a></span>;
addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>);
addButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Add"</span>));
editButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Edit"</span>));
editButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
removeButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Remove"</span>));
removeButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
submitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Submit"</span>));
submitButton<span class="operator">-</span><span class="operator">></span>hide();
cancelButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Cancel"</span>));
cancelButton<span class="operator">-</span><span class="operator">></span>hide();
nextButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Next"</span>));
nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
previousButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"&Previous"</span>));
previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
connect(addButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(addContact()));
connect(submitButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(submitContact()));
connect(editButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(editContact()));
connect(removeButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(removeContact()));
connect(cancelButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(cancel()));
connect(nextButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(next()));
connect(previousButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(previous()));
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>buttonLayout1 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>;
buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(addButton);
buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(editButton);
buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(removeButton);
buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(submitButton);
buttonLayout1<span class="operator">-</span><span class="operator">></span>addWidget(cancelButton);
buttonLayout1<span class="operator">-</span><span class="operator">></span>addStretch();
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>buttonLayout2 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>;
buttonLayout2<span class="operator">-</span><span class="operator">></span>addWidget(previousButton);
buttonLayout2<span class="operator">-</span><span class="operator">></span>addWidget(nextButton);
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(nameLabel<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>);
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(nameLine<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(addressLabel<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignTop);
mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(addressText<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(buttonLayout1<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(buttonLayout2<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>);
setLayout(mainLayout);
setWindowTitle(tr(<span class="string">"Simple Address Book"</span>));
}
<span class="type">void</span> AddressBook<span class="operator">::</span>addContact()
{
oldName <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text();
oldAddress <span class="operator">=</span> addressText<span class="operator">-</span><span class="operator">></span>toPlainText();
nameLine<span class="operator">-</span><span class="operator">></span>clear();
addressText<span class="operator">-</span><span class="operator">></span>clear();
updateInterface(AddingMode);
}
<span class="type">void</span> AddressBook<span class="operator">::</span>editContact()
{
oldName <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text();
oldAddress <span class="operator">=</span> addressText<span class="operator">-</span><span class="operator">></span>toPlainText();
updateInterface(EditingMode);
}
<span class="type">void</span> AddressBook<span class="operator">::</span>submitContact()
{
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text();
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> address <span class="operator">=</span> addressText<span class="operator">-</span><span class="operator">></span>toPlainText();
<span class="keyword">if</span> (name<span class="operator">.</span>isEmpty() <span class="operator">|</span><span class="operator">|</span> address<span class="operator">.</span>isEmpty()) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Empty Field"</span>)<span class="operator">,</span>
tr(<span class="string">"Please enter a name and address."</span>));
<span class="keyword">return</span>;
}
<span class="keyword">if</span> (currentMode <span class="operator">=</span><span class="operator">=</span> AddingMode) {
<span class="keyword">if</span> (<span class="operator">!</span>contacts<span class="operator">.</span>contains(name)) {
contacts<span class="operator">.</span>insert(name<span class="operator">,</span> address);
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Add Successful"</span>)<span class="operator">,</span>
tr(<span class="string">"\"%1\" has been added to your address book."</span>)<span class="operator">.</span>arg(name));
} <span class="keyword">else</span> {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Add Unsuccessful"</span>)<span class="operator">,</span>
tr(<span class="string">"Sorry, \"%1\" is already in your address book."</span>)<span class="operator">.</span>arg(name));
}
} <span class="keyword">else</span> <span class="keyword">if</span> (currentMode <span class="operator">=</span><span class="operator">=</span> EditingMode) {
<span class="keyword">if</span> (oldName <span class="operator">!</span><span class="operator">=</span> name) {
<span class="keyword">if</span> (<span class="operator">!</span>contacts<span class="operator">.</span>contains(name)) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Edit Successful"</span>)<span class="operator">,</span>
tr(<span class="string">"\"%1\" has been edited in your address book."</span>)<span class="operator">.</span>arg(oldName));
contacts<span class="operator">.</span>remove(oldName);
contacts<span class="operator">.</span>insert(name<span class="operator">,</span> address);
} <span class="keyword">else</span> {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Edit Unsuccessful"</span>)<span class="operator">,</span>
tr(<span class="string">"Sorry, \"%1\" is already in your address book."</span>)<span class="operator">.</span>arg(name));
}
} <span class="keyword">else</span> <span class="keyword">if</span> (oldAddress <span class="operator">!</span><span class="operator">=</span> address) {
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Edit Successful"</span>)<span class="operator">,</span>
tr(<span class="string">"\"%1\" has been edited in your address book."</span>)<span class="operator">.</span>arg(name));
contacts<span class="operator">[</span>name<span class="operator">]</span> <span class="operator">=</span> address;
}
}
updateInterface(NavigationMode);
}
<span class="type">void</span> AddressBook<span class="operator">::</span>cancel()
{
nameLine<span class="operator">-</span><span class="operator">></span>setText(oldName);
addressText<span class="operator">-</span><span class="operator">></span>setText(oldAddress);
updateInterface(NavigationMode);
}
<span class="type">void</span> AddressBook<span class="operator">::</span>removeContact()
{
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text();
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> address <span class="operator">=</span> addressText<span class="operator">-</span><span class="operator">></span>toPlainText();
<span class="keyword">if</span> (contacts<span class="operator">.</span>contains(name)) {
<span class="type">int</span> button <span class="operator">=</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>question(<span class="keyword">this</span><span class="operator">,</span>
tr(<span class="string">"Confirm Remove"</span>)<span class="operator">,</span>
tr(<span class="string">"Are you sure you want to remove \"%1\"?"</span>)<span class="operator">.</span>arg(name)<span class="operator">,</span>
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Yes <span class="operator">|</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>No);
<span class="keyword">if</span> (button <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Yes) {
previous();
contacts<span class="operator">.</span>remove(name);
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Remove Successful"</span>)<span class="operator">,</span>
tr(<span class="string">"\"%1\" has been removed from your address book."</span>)<span class="operator">.</span>arg(name));
}
}
updateInterface(NavigationMode);
}
<span class="type">void</span> AddressBook<span class="operator">::</span>next()
{
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text();
<span class="type"><a href="../qtcore/qmap.html">QMap</a></span><span class="operator"><</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">></span><span class="operator">::</span>iterator i <span class="operator">=</span> contacts<span class="operator">.</span>find(name);
<span class="keyword">if</span> (i <span class="operator">!</span><span class="operator">=</span> contacts<span class="operator">.</span>end())
i<span class="operator">+</span><span class="operator">+</span>;
<span class="keyword">if</span> (i <span class="operator">=</span><span class="operator">=</span> contacts<span class="operator">.</span>end())
i <span class="operator">=</span> contacts<span class="operator">.</span>begin();
nameLine<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>key());
addressText<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>value());
}
<span class="type">void</span> AddressBook<span class="operator">::</span>previous()
{
<span class="type"><a href="../qtcore/qstring.html">QString</a></span> name <span class="operator">=</span> nameLine<span class="operator">-</span><span class="operator">></span>text();
<span class="type"><a href="../qtcore/qmap.html">QMap</a></span><span class="operator"><</span><span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span><span class="operator">></span><span class="operator">::</span>iterator i <span class="operator">=</span> contacts<span class="operator">.</span>find(name);
<span class="keyword">if</span> (i <span class="operator">=</span><span class="operator">=</span> contacts<span class="operator">.</span>end()) {
nameLine<span class="operator">-</span><span class="operator">></span>clear();
addressText<span class="operator">-</span><span class="operator">></span>clear();
<span class="keyword">return</span>;
}
<span class="keyword">if</span> (i <span class="operator">=</span><span class="operator">=</span> contacts<span class="operator">.</span>begin())
i <span class="operator">=</span> contacts<span class="operator">.</span>end();
i<span class="operator">-</span><span class="operator">-</span>;
nameLine<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>key());
addressText<span class="operator">-</span><span class="operator">></span>setText(i<span class="operator">.</span>value());
}
<span class="type">void</span> AddressBook<span class="operator">::</span>updateInterface(Mode mode)
{
currentMode <span class="operator">=</span> mode;
<span class="keyword">switch</span> (currentMode) {
<span class="keyword">case</span> AddingMode:
<span class="keyword">case</span> EditingMode:
nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">false</span>);
nameLine<span class="operator">-</span><span class="operator">></span>setFocus(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>OtherFocusReason);
addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">false</span>);
addButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
editButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
removeButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">false</span>);
submitButton<span class="operator">-</span><span class="operator">></span>show();
cancelButton<span class="operator">-</span><span class="operator">></span>show();
<span class="keyword">break</span>;
<span class="keyword">case</span> NavigationMode:
<span class="keyword">if</span> (contacts<span class="operator">.</span>isEmpty()) {
nameLine<span class="operator">-</span><span class="operator">></span>clear();
addressText<span class="operator">-</span><span class="operator">></span>clear();
}
nameLine<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>);
addressText<span class="operator">-</span><span class="operator">></span>setReadOnly(<span class="keyword">true</span>);
addButton<span class="operator">-</span><span class="operator">></span>setEnabled(<span class="keyword">true</span>);
<span class="type">int</span> number <span class="operator">=</span> contacts<span class="operator">.</span>size();
editButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span><span class="operator">=</span> <span class="number">1</span>);
removeButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span><span class="operator">=</span> <span class="number">1</span>);
nextButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span> <span class="number">1</span>);
previousButton<span class="operator">-</span><span class="operator">></span>setEnabled(number <span class="operator">></span><span class="number">1</span> );
submitButton<span class="operator">-</span><span class="operator">></span>hide();
cancelButton<span class="operator">-</span><span class="operator">></span>hide();
<span class="keyword">break</span>;
}
}
</pre>
</div>
<!-- @@@tutorials/addressbook/part4/addressbook.cpp -->
</div>
</div>
</div>
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Documentation contributions included herein are the copyrights of
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distrib
>
Mageia
>
6
>
armv5tl
>
media
>
core-updates
>
by-pkgid
>
768f7d9f703884aa2562bf0a651086df
>
files
>
4413
