| 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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| 2 | <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/network/archivesearch/archivesearch.doc:5 -->
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| 3 | <html>
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| 4 | <head>
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| 5 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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| 6 | <title>A qt-interest mail archive search</title>
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| 7 | <style type="text/css"><!--
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| 8 | fn { margin-left: 1cm; text-indent: -1cm; }
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| 9 | a:link { color: #004faf; text-decoration: none }
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| 10 | a:visited { color: #672967; text-decoration: none }
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| 11 | body { background: #ffffff; color: black; }
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| 12 | --></style>
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| 14 | <body>
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| 15 |
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| 16 | <table border="0" cellpadding="0" cellspacing="0" width="100%">
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| 17 | <tr bgcolor="#E5E5E5">
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| 18 | <td valign=center>
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| 19 | <a href="index.html">
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| 20 | <font color="#004faf">Home</font></a>
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| 21 | | <a href="classes.html">
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| 22 | <font color="#004faf">All Classes</font></a>
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| 23 | | <a href="mainclasses.html">
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| 24 | <font color="#004faf">Main Classes</font></a>
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| 25 | | <a href="annotated.html">
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| 26 | <font color="#004faf">Annotated</font></a>
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| 27 | | <a href="groups.html">
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| 28 | <font color="#004faf">Grouped Classes</font></a>
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| 29 | | <a href="functions.html">
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| 30 | <font color="#004faf">Functions</font></a>
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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A qt-interest mail archive search</h1>
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| 33 |
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| 34 |
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| 35 | <p>
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| 36 | <p> This example does a search on the qt-interest mailinglist archives. It uses
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| 37 | <a href="qhttp.html">QHttp</a> to issue the search command and to fetch the results. The GUI parts
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| 38 | were done using <a href="designer-manual.html">Qt Designer</a>.
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| 39 | <p> <hr>
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| 40 | <p> The implementation of the HTTP requests (archivedialog.ui.h):
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| 41 | <p> <pre>/****************************************************************************
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| 42 | ** $Id: archivesearch-example.html 2051 2007-02-21 10:04:20Z chehrlic $
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| 43 | **
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| 44 | ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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| 45 | **
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| 46 | ** This file is part of an example program for Qt. This example
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| 47 | ** program may be used, distributed and modified without limitation.
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| 48 | **
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| 49 | *****************************************************************************/
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| 50 |
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| 51 | /****************************************************************************
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| 52 | ** ui.h extension file, included from the uic-generated form implementation.
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| 53 | **
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| 54 | ** If you wish to add, delete or rename functions or slots use
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| 55 | ** Qt Designer which will update this file, preserving your code. Create an
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| 56 | ** init() function in place of a constructor, and a destroy() function in
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| 57 | ** place of a destructor.
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| 58 | *****************************************************************************/
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| 59 |
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| 60 | void ArchiveDialog::init()
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| 61 | {
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| 62 | connect(&articleSearcher, SIGNAL(done(bool)), this, SLOT(searchDone(bool)));
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| 63 | connect(&articleFetcher, SIGNAL(done(bool)), this, SLOT(fetchDone(bool)));
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| 64 | connect(myListView, SIGNAL(selectionChanged(QListViewItem*)), this, SLOT(fetch(QListViewItem*)));
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| 65 | connect(myLineEdit, SIGNAL(returnPressed()), this, SLOT(search()));
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| 66 | connect(myListView, SIGNAL(returnPressed(QListViewItem*)), this, SLOT(fetch(QListViewItem*)));
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| 67 | connect(myPushButton, SIGNAL(clicked()), this, SLOT(close()));
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| 68 | }
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| 69 |
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| 70 | void ArchiveDialog::fetch( <a href="qlistviewitem.html">QListViewItem</a> *it )
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| 71 | {
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| 72 | <a name="x477"></a> <a href="qurl.html">QUrl</a> u(it-><a href="qlistviewitem.html#text">text</a>(1));
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| 73 | <a name="x485"></a> articleFetcher.setHost(u.<a href="qurl.html#host">host</a>());
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| 74 | articleFetcher.get(it-><a href="qlistviewitem.html#text">text</a>(1));
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| 75 | }
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| 76 |
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| 77 | void ArchiveDialog::fetchDone( bool error )
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| 78 | {
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| 79 | if (error) {
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| 80 | <a name="x478"></a> QMessageBox::<a href="qmessagebox.html#critical">critical</a>(this, "Error fetching",
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| 81 | "An error occurred when fetching this document: "
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| 82 | + articleFetcher.errorString(),
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| 83 | QMessageBox::Ok, QMessageBox::NoButton);
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| 84 | } else {
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| 85 | myTextBrowser->setText(articleFetcher.readAll());
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| 86 | }
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| 87 | }
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| 88 |
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| 89 | void ArchiveDialog::search()
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| 90 | {
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| 91 | if (articleSearcher.state() == QHttp::HostLookup
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| 92 | || articleSearcher.state() == QHttp::Connecting
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| 93 | || articleSearcher.state() == QHttp::Sending
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| 94 | || articleSearcher.state() == QHttp::Reading) {
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| 95 | articleSearcher.abort();
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| 96 | }
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| 97 |
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| 98 | if (myLineEdit->text() == "") {
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| 99 | QMessageBox::<a href="qmessagebox.html#critical">critical</a>(this, "Empty query",
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| 100 | "Please type a search string.",
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| 101 | QMessageBox::Ok, QMessageBox::NoButton);
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| 102 | } else {
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| 103 | <a name="x474"></a> QApplication::<a href="qapplication.html#setOverrideCursor">setOverrideCursor</a>(QCursor(Qt::WaitCursor));
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| 104 |
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| 105 | articleSearcher.setHost("lists.trolltech.com");
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| 106 |
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| 107 | <a href="qhttprequestheader.html">QHttpRequestHeader</a> header("POST", "/qt-interest/search.php");
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| 108 | <a name="x476"></a> header.<a href="qhttpheader.html#setValue">setValue</a>("Host", "lists.trolltech.com");
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| 109 | <a name="x475"></a> header.<a href="qhttpheader.html#setContentType">setContentType</a>("application/x-www-form-urlencoded");
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| 110 |
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| 111 | <a href="qstring.html">QString</a> encodedTopic = myLineEdit->text();
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| 112 | <a name="x484"></a> QUrl::<a href="qurl.html#encode">encode</a>(encodedTopic);
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| 113 | <a href="qstring.html">QString</a> searchString = "qt-interest=on&search=" + encodedTopic;
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| 114 |
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| 115 | <a name="x483"></a> articleSearcher.request(header, searchString.<a href="qstring.html#utf8">utf8</a>());
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| 116 | }
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| 117 |
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| 118 | }
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| 119 |
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| 120 | void ArchiveDialog::searchDone( bool error )
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| 121 | {
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| 122 | if (error) {
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| 123 | QMessageBox::<a href="qmessagebox.html#critical">critical</a>(this, "Error searching",
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| 124 | "An error occurred when searching: "
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| 125 | + articleSearcher.errorString(),
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| 126 | QMessageBox::Ok, QMessageBox::NoButton);
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| 127 | } else {
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| 128 | <a href="qstring.html">QString</a> result(articleSearcher.readAll());
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| 129 |
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| 130 | <a href="qregexp.html">QRegExp</a> rx("<a href=\"(http://lists\\.trolltech\\.com/qt-interest/.*)\">(.*)</a>");
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| 131 | <a name="x482"></a> rx.<a href="qregexp.html#setMinimal">setMinimal</a>(TRUE);
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| 132 | int pos = 0;
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| 133 | while (pos >= 0) {
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| 134 | <a name="x481"></a> pos = rx.<a href="qregexp.html#search">search</a>(result, pos);
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| 135 | if (pos > -1) {
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| 136 | <a name="x480"></a> pos += rx.<a href="qregexp.html#matchedLength">matchedLength</a>();
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| 137 | <a name="x479"></a> new <a href="qlistviewitem.html">QListViewItem</a>(myListView, rx.<a href="qregexp.html#cap">cap</a>(2), rx.<a href="qregexp.html#cap">cap</a>(1));
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| 138 | }
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| 139 | }
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| 140 | }
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| 141 |
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| 142 | <a name="x473"></a> QApplication::<a href="qapplication.html#restoreOverrideCursor">restoreOverrideCursor</a>();
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| 143 | }
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| 144 | </pre>
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| 145 |
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| 146 | <p> <hr>
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| 147 | <p> Main (main.cpp):
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| 148 | <p> <pre>/****************************************************************************
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| 149 | ** $Id: archivesearch-example.html 2051 2007-02-21 10:04:20Z chehrlic $
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| 150 | **
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| 151 | ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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| 152 | **
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| 153 | ** This file is part of an example program for Qt. This example
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| 154 | ** program may be used, distributed and modified without limitation.
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| 155 | **
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| 156 | *****************************************************************************/
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| 157 |
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| 158 | #include "archivedialog.h"
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| 159 | #include <<a href="qapplication-h.html">qapplication.h</a>>
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| 160 |
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| 161 | int main(int argc, char **argv)
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| 162 | {
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| 163 | <a href="qapplication.html">QApplication</a> a( argc, argv );
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| 164 | ArchiveDialog ad;
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| 165 | ad.show();
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| 166 |
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| 167 | <a name="x489"></a><a name="x487"></a> QObject::<a href="qobject.html#connect">connect</a>( &a, SIGNAL(<a href="qapplication.html#lastWindowClosed">lastWindowClosed</a>()),
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| 168 | <a name="x488"></a> &a, SLOT(<a href="qapplication.html#quit">quit</a>()) );
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| 169 |
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| 170 | <a name="x486"></a> return a.<a href="qapplication.html#exec">exec</a>();
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| 171 | }
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| 172 | </pre>
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| 173 |
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| 174 | <p>See also <a href="network-examples.html">Network Examples</a>.
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| 175 |
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| 176 | <!-- eof -->
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| 177 | <p><address><hr><div align=center>
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| 178 | <table width=100% cellspacing=0 border=0><tr>
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| 179 | <td>Copyright © 2007
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| 180 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 181 | <td align=right><div align=right>Qt 3.3.8</div>
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| 182 | </table></div></address></body>
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| 183 | </html>
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