source: trunk/examples/tutorials/addressbook/part4/addressbook.cpp@ 846

Last change on this file since 846 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 9.3 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the examples of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#include <QtGui>
42#include "addressbook.h"
43
44AddressBook::AddressBook(QWidget *parent)
45 : QWidget(parent)
46{
47 QLabel *nameLabel = new QLabel(tr("Name:"));
48 nameLine = new QLineEdit;
49 nameLine->setReadOnly(true);
50
51 QLabel *addressLabel = new QLabel(tr("Address:"));
52 addressText = new QTextEdit;
53 addressText->setReadOnly(true);
54
55 addButton = new QPushButton(tr("&Add"));
56//! [edit and remove buttons]
57 editButton = new QPushButton(tr("&Edit"));
58 editButton->setEnabled(false);
59 removeButton = new QPushButton(tr("&Remove"));
60 removeButton->setEnabled(false);
61//! [edit and remove buttons]
62 submitButton = new QPushButton(tr("&Submit"));
63 submitButton->hide();
64 cancelButton = new QPushButton(tr("&Cancel"));
65 cancelButton->hide();
66
67 nextButton = new QPushButton(tr("&Next"));
68 nextButton->setEnabled(false);
69 previousButton = new QPushButton(tr("&Previous"));
70 previousButton->setEnabled(false);
71
72 connect(addButton, SIGNAL(clicked()), this, SLOT(addContact()));
73 connect(submitButton, SIGNAL(clicked()), this, SLOT(submitContact()));
74//! [connecting edit and remove]
75 connect(editButton, SIGNAL(clicked()), this, SLOT(editContact()));
76 connect(removeButton, SIGNAL(clicked()), this, SLOT(removeContact()));
77//! [connecting edit and remove]
78 connect(cancelButton, SIGNAL(clicked()), this, SLOT(cancel()));
79 connect(nextButton, SIGNAL(clicked()), this, SLOT(next()));
80 connect(previousButton, SIGNAL(clicked()), this, SLOT(previous()));
81
82 QVBoxLayout *buttonLayout1 = new QVBoxLayout;
83 buttonLayout1->addWidget(addButton);
84//! [adding edit and remove to the layout]
85 buttonLayout1->addWidget(editButton);
86 buttonLayout1->addWidget(removeButton);
87//! [adding edit and remove to the layout]
88 buttonLayout1->addWidget(submitButton);
89 buttonLayout1->addWidget(cancelButton);
90 buttonLayout1->addStretch();
91
92 QHBoxLayout *buttonLayout2 = new QHBoxLayout;
93 buttonLayout2->addWidget(previousButton);
94 buttonLayout2->addWidget(nextButton);
95
96 QGridLayout *mainLayout = new QGridLayout;
97 mainLayout->addWidget(nameLabel, 0, 0);
98 mainLayout->addWidget(nameLine, 0, 1);
99 mainLayout->addWidget(addressLabel, 1, 0, Qt::AlignTop);
100 mainLayout->addWidget(addressText, 1, 1);
101 mainLayout->addLayout(buttonLayout1, 1, 2);
102 mainLayout->addLayout(buttonLayout2, 2, 1);
103
104 setLayout(mainLayout);
105 setWindowTitle(tr("Simple Address Book"));
106}
107
108void AddressBook::addContact()
109{
110 oldName = nameLine->text();
111 oldAddress = addressText->toPlainText();
112
113 nameLine->clear();
114 addressText->clear();
115
116 updateInterface(AddingMode);
117}
118//! [editContact() function]
119void AddressBook::editContact()
120{
121 oldName = nameLine->text();
122 oldAddress = addressText->toPlainText();
123
124 updateInterface(EditingMode);
125}
126//! [editContact() function]
127//! [submitContact() function beginning]
128void AddressBook::submitContact()
129{
130//! [submitContact() function beginning]
131 QString name = nameLine->text();
132 QString address = addressText->toPlainText();
133
134 if (name.isEmpty() || address.isEmpty()) {
135 QMessageBox::information(this, tr("Empty Field"),
136 tr("Please enter a name and address."));
137 return;
138 }
139//! [submitContact() function part1]
140 if (currentMode == AddingMode) {
141
142 if (!contacts.contains(name)) {
143 contacts.insert(name, address);
144 QMessageBox::information(this, tr("Add Successful"),
145 tr("\"%1\" has been added to your address book.").arg(name));
146 } else {
147 QMessageBox::information(this, tr("Add Unsuccessful"),
148 tr("Sorry, \"%1\" is already in your address book.").arg(name));
149 }
150//! [submitContact() function part1]
151//! [submitContact() function part2]
152 } else if (currentMode == EditingMode) {
153
154 if (oldName != name) {
155 if (!contacts.contains(name)) {
156 QMessageBox::information(this, tr("Edit Successful"),
157 tr("\"%1\" has been edited in your address book.").arg(oldName));
158 contacts.remove(oldName);
159 contacts.insert(name, address);
160 } else {
161 QMessageBox::information(this, tr("Edit Unsuccessful"),
162 tr("Sorry, \"%1\" is already in your address book.").arg(name));
163 }
164 } else if (oldAddress != address) {
165 QMessageBox::information(this, tr("Edit Successful"),
166 tr("\"%1\" has been edited in your address book.").arg(name));
167 contacts[name] = address;
168 }
169 }
170
171 updateInterface(NavigationMode);
172}
173//! [submitContact() function part2]
174
175void AddressBook::cancel()
176{
177 nameLine->setText(oldName);
178 addressText->setText(oldAddress);
179 updateInterface(NavigationMode);
180}
181//! [removeContact() function]
182void AddressBook::removeContact()
183{
184 QString name = nameLine->text();
185 QString address = addressText->toPlainText();
186
187 if (contacts.contains(name)) {
188
189 int button = QMessageBox::question(this,
190 tr("Confirm Remove"),
191 tr("Are you sure you want to remove \"%1\"?").arg(name),
192 QMessageBox::Yes | QMessageBox::No);
193
194 if (button == QMessageBox::Yes) {
195
196 previous();
197 contacts.remove(name);
198
199 QMessageBox::information(this, tr("Remove Successful"),
200 tr("\"%1\" has been removed from your address book.").arg(name));
201 }
202 }
203
204 updateInterface(NavigationMode);
205}
206//! [removeContact() function]
207void AddressBook::next()
208{
209 QString name = nameLine->text();
210 QMap<QString, QString>::iterator i = contacts.find(name);
211
212 if (i != contacts.end())
213 i++;
214
215 if (i == contacts.end())
216 i = contacts.begin();
217
218 nameLine->setText(i.key());
219 addressText->setText(i.value());
220}
221
222void AddressBook::previous()
223{
224 QString name = nameLine->text();
225 QMap<QString, QString>::iterator i = contacts.find(name);
226
227 if (i == contacts.end()) {
228 nameLine->clear();
229 addressText->clear();
230 return;
231 }
232
233 if (i == contacts.begin())
234 i = contacts.end();
235
236 i--;
237 nameLine->setText(i.key());
238 addressText->setText(i.value());
239}
240//! [update interface() part 1]
241void AddressBook::updateInterface(Mode mode)
242{
243 currentMode = mode;
244
245 switch (currentMode) {
246
247 case AddingMode:
248 case EditingMode:
249
250 nameLine->setReadOnly(false);
251 nameLine->setFocus(Qt::OtherFocusReason);
252 addressText->setReadOnly(false);
253
254 addButton->setEnabled(false);
255 editButton->setEnabled(false);
256 removeButton->setEnabled(false);
257
258 nextButton->setEnabled(false);
259 previousButton->setEnabled(false);
260
261 submitButton->show();
262 cancelButton->show();
263 break;
264//! [update interface() part 1]
265//! [update interface() part 2]
266 case NavigationMode:
267
268 if (contacts.isEmpty()) {
269 nameLine->clear();
270 addressText->clear();
271 }
272
273 nameLine->setReadOnly(true);
274 addressText->setReadOnly(true);
275 addButton->setEnabled(true);
276
277 int number = contacts.size();
278 editButton->setEnabled(number >= 1);
279 removeButton->setEnabled(number >= 1);
280 nextButton->setEnabled(number > 1);
281 previousButton->setEnabled(number >1 );
282
283 submitButton->hide();
284 cancelButton->hide();
285 break;
286 }
287}
288//! [update interface() part 2]
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