|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the examples of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
15 ** |
|
16 ** GNU Lesser General Public License Usage |
|
17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 ** General Public License version 2.1 as published by the Free Software |
|
19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 ** packaging of this file. Please review the following information to |
|
21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 ** |
|
24 ** In addition, as a special exception, Nokia gives you certain additional |
|
25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 ** |
|
28 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 #include <QtGui> |
|
43 #include <QtNetwork> |
|
44 |
|
45 #include "blockingclient.h" |
|
46 |
|
47 BlockingClient::BlockingClient(QWidget *parent) |
|
48 : QDialog(parent) |
|
49 { |
|
50 hostLabel = new QLabel(tr("&Server name:")); |
|
51 portLabel = new QLabel(tr("S&erver port:")); |
|
52 |
|
53 hostLineEdit = new QLineEdit("Localhost"); |
|
54 portLineEdit = new QLineEdit; |
|
55 portLineEdit->setValidator(new QIntValidator(1, 65535, this)); |
|
56 |
|
57 hostLabel->setBuddy(hostLineEdit); |
|
58 portLabel->setBuddy(portLineEdit); |
|
59 |
|
60 statusLabel = new QLabel(tr("This examples requires that you run the " |
|
61 "Fortune Server example as well.")); |
|
62 |
|
63 getFortuneButton = new QPushButton(tr("Get Fortune")); |
|
64 getFortuneButton->setDefault(true); |
|
65 getFortuneButton->setEnabled(false); |
|
66 |
|
67 quitButton = new QPushButton(tr("Quit")); |
|
68 |
|
69 buttonBox = new QDialogButtonBox; |
|
70 buttonBox->addButton(getFortuneButton, QDialogButtonBox::ActionRole); |
|
71 buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole); |
|
72 |
|
73 connect(hostLineEdit, SIGNAL(textChanged(const QString &)), |
|
74 this, SLOT(enableGetFortuneButton())); |
|
75 connect(portLineEdit, SIGNAL(textChanged(const QString &)), |
|
76 this, SLOT(enableGetFortuneButton())); |
|
77 connect(getFortuneButton, SIGNAL(clicked()), |
|
78 this, SLOT(requestNewFortune())); |
|
79 connect(quitButton, SIGNAL(clicked()), this, SLOT(close())); |
|
80 //! [0] |
|
81 connect(&thread, SIGNAL(newFortune(const QString &)), |
|
82 this, SLOT(showFortune(const QString &))); |
|
83 //! [0] //! [1] |
|
84 connect(&thread, SIGNAL(error(int, const QString &)), |
|
85 this, SLOT(displayError(int, const QString &))); |
|
86 //! [1] |
|
87 |
|
88 QGridLayout *mainLayout = new QGridLayout; |
|
89 mainLayout->addWidget(hostLabel, 0, 0); |
|
90 mainLayout->addWidget(hostLineEdit, 0, 1); |
|
91 mainLayout->addWidget(portLabel, 1, 0); |
|
92 mainLayout->addWidget(portLineEdit, 1, 1); |
|
93 mainLayout->addWidget(statusLabel, 2, 0, 1, 2); |
|
94 mainLayout->addWidget(buttonBox, 3, 0, 1, 2); |
|
95 setLayout(mainLayout); |
|
96 |
|
97 setWindowTitle(tr("Blocking Fortune Client")); |
|
98 portLineEdit->setFocus(); |
|
99 } |
|
100 |
|
101 //! [2] |
|
102 void BlockingClient::requestNewFortune() |
|
103 { |
|
104 getFortuneButton->setEnabled(false); |
|
105 thread.requestNewFortune(hostLineEdit->text(), |
|
106 portLineEdit->text().toInt()); |
|
107 } |
|
108 //! [2] |
|
109 |
|
110 //! [3] |
|
111 void BlockingClient::showFortune(const QString &nextFortune) |
|
112 { |
|
113 if (nextFortune == currentFortune) { |
|
114 requestNewFortune(); |
|
115 return; |
|
116 } |
|
117 //! [3] |
|
118 |
|
119 //! [4] |
|
120 currentFortune = nextFortune; |
|
121 statusLabel->setText(currentFortune); |
|
122 getFortuneButton->setEnabled(true); |
|
123 } |
|
124 //! [4] |
|
125 |
|
126 void BlockingClient::displayError(int socketError, const QString &message) |
|
127 { |
|
128 switch (socketError) { |
|
129 case QAbstractSocket::HostNotFoundError: |
|
130 QMessageBox::information(this, tr("Blocking Fortune Client"), |
|
131 tr("The host was not found. Please check the " |
|
132 "host and port settings.")); |
|
133 break; |
|
134 case QAbstractSocket::ConnectionRefusedError: |
|
135 QMessageBox::information(this, tr("Blocking Fortune Client"), |
|
136 tr("The connection was refused by the peer. " |
|
137 "Make sure the fortune server is running, " |
|
138 "and check that the host name and port " |
|
139 "settings are correct.")); |
|
140 break; |
|
141 default: |
|
142 QMessageBox::information(this, tr("Blocking Fortune Client"), |
|
143 tr("The following error occurred: %1.") |
|
144 .arg(message)); |
|
145 } |
|
146 |
|
147 getFortuneButton->setEnabled(true); |
|
148 } |
|
149 |
|
150 void BlockingClient::enableGetFortuneButton() |
|
151 { |
|
152 getFortuneButton->setEnabled(!hostLineEdit->text().isEmpty() |
|
153 && !portLineEdit->text().isEmpty()); |
|
154 } |