lili/qt4-x11
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
master
qt4-x11/doc/html/network-http-httpwindow-cpp.html
lili 35a2a1d584 init
2025-08-24 20:55:26 +08:00

487 lines
36 KiB
HTML
Raw Permalink Blame History

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Qt 4.8: httpwindow.cpp Example File (network/http/httpwindow.cpp)</title>
<link rel="stylesheet" type="text/css" href="style/style.css" />
<script src="scripts/jquery.js" type="text/javascript"></script>
<script src="scripts/functions.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="style/superfish.css" />
<link rel="stylesheet" type="text/css" href="style/narrow.css" />
<!--[if IE]>
<meta name="MSSmartTagsPreventParsing" content="true">
<meta http-equiv="imagetoolbar" content="no">
<![endif]-->
<!--[if lt IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie6.css">
<![endif]-->
<!--[if IE 7]>
<link rel="stylesheet" type="text/css" href="style/style_ie7.css">
<![endif]-->
<!--[if IE 8]>
<link rel="stylesheet" type="text/css" href="style/style_ie8.css">
<![endif]-->
<script src="scripts/superfish.js" type="text/javascript"></script>
<script src="scripts/narrow.js" type="text/javascript"></script>
</head>
<body class="" onload="CheckEmptyAndLoadList();">
<div class="header" id="qtdocheader">
<div class="content">
<div id="nav-logo">
<a href="index.html">Home</a></div>
<a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
<div id="narrowsearch"></div>
<div id="nav-topright">
<ul>
<li class="nav-topright-home"><a href="http://qt.digia.com/">Qt HOME</a></li>
<li class="nav-topright-dev"><a href="http://qt-project.org/">DEV</a></li>
<li class="nav-topright-doc nav-topright-doc-active"><a href="http://qt-project.org/doc/">
DOC</a></li>
<li class="nav-topright-blog"><a href="http://blog.qt.digia.com/">BLOG</a></li>
</ul>
</div>
<div id="shortCut">
<ul>
<li class="shortCut-topleft-inactive"><span><a href="index.html">Qt 4.8</a></span></li>
<li class="shortCut-topleft-active"><a href="http://qt-project.org/doc/">ALL VERSIONS </a></li>
</ul>
</div>
<ul class="sf-menu" id="narrowmenu">
<li><a href="#">API Lookup</a>
<ul>
<li><a href="classes.html">Class index</a></li>
<li><a href="functions.html">Function index</a></li>
<li><a href="modules.html">Modules</a></li>
<li><a href="namespaces.html">Namespaces</a></li>
<li><a href="qtglobal.html">Global Declarations</a></li>
<li><a href="qdeclarativeelements.html">QML elements</a></li>
</ul>
</li>
<li><a href="#">Qt Topics</a>
<ul>
<li><a href="qt-basic-concepts.html">Programming with Qt</a></li>
<li><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>
<li><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
<li><a href="supported-platforms.html">Supported Platforms</a></li>
<li><a href="technology-apis.html">Qt and Key Technologies</a></li>
<li><a href="best-practices.html">How-To's and Best Practices</a></li>
</ul>
</li>
<li><a href="#">Examples</a>
<ul>
<li><a href="all-examples.html">Examples</a></li>
<li><a href="tutorials.html">Tutorials</a></li>
<li><a href="demos.html">Demos</a></li>
<li><a href="qdeclarativeexamples.html">QML Examples</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div class="wrapper">
<div class="hd">
<span></span>
</div>
<div class="bd group">
<div class="sidebar">
<div class="searchlabel">
Search index:</div>
<div class="search" id="sidebarsearch">
<form id="qtdocsearch" action="" onsubmit="return false;">
<fieldset>
<input type="text" name="searchstring" id="pageType" value="" />
<div id="resultdialog">
<a href="#" id="resultclose">Close</a>
<p id="resultlinks" class="all"><a href="#" id="showallresults">All</a> | <a href="#" id="showapiresults">API</a> | <a href="#" id="showarticleresults">Articles</a> | <a href="#" id="showexampleresults">Examples</a></p>
<p id="searchcount" class="all"><span id="resultcount"></span><span id="apicount"></span><span id="articlecount"></span><span id="examplecount"></span>&nbsp;results:</p>
<ul id="resultlist" class="all">
</ul>
</div>
</fieldset>
</form>
</div>
<div class="box first bottombar" id="lookup">
<h2 title="API Lookup"><span></span>
API Lookup</h2>
<div id="list001" class="list">
<ul id="ul001" >
<li class="defaultLink"><a href="classes.html">Class index</a></li>
<li class="defaultLink"><a href="functions.html">Function index</a></li>
<li class="defaultLink"><a href="modules.html">Modules</a></li>
<li class="defaultLink"><a href="namespaces.html">Namespaces</a></li>
<li class="defaultLink"><a href="qtglobal.html">Global Declarations</a></li>
<li class="defaultLink"><a href="qdeclarativeelements.html">QML elements</a></li>
</ul>
</div>
</div>
<div class="box bottombar" id="topics">
<h2 title="Qt Topics"><span></span>
Qt Topics</h2>
<div id="list002" class="list">
<ul id="ul002" >
<li class="defaultLink"><a href="qt-basic-concepts.html">Programming with Qt</a></li>
<li class="defaultLink"><a href="qtquick.html">Device UIs &amp; Qt Quick</a></li>
<li class="defaultLink"><a href="qt-gui-concepts.html">UI Design with Qt</a></li>
<li class="defaultLink"><a href="supported-platforms.html">Supported Platforms</a></li>
<li class="defaultLink"><a href="technology-apis.html">Qt and Key Technologies</a></li>
<li class="defaultLink"><a href="best-practices.html">How-To's and Best Practices</a></li>
</ul>
</div>
</div>
<div class="box" id="examples">
<h2 title="Examples"><span></span>
Examples</h2>
<div id="list003" class="list">
<ul id="ul003">
<li class="defaultLink"><a href="all-examples.html">Examples</a></li>
<li class="defaultLink"><a href="tutorials.html">Tutorials</a></li>
<li class="defaultLink"><a href="demos.html">Demos</a></li>
<li class="defaultLink"><a href="qdeclarativeexamples.html">QML Examples</a></li>
</ul>
</div>
</div>
</div>
<div class="wrap">
<div class="toolbar">
<div class="breadcrumb toolblock">
<ul>
<li class="first"><a href="index.html">Home</a></li>
<!-- Breadcrumbs go here -->
</ul>
</div>
<div class="toolbuttons toolblock">
<ul>
<li id="smallA" class="t_button">A</li>
<li id="medA" class="t_button active">A</li>
<li id="bigA" class="t_button">A</li>
<li id="print" class="t_button"><a href="javascript:this.print();">
<span>Print</span></a></li>
</ul>
</div>
</div>
<div class="content mainContent">
<h1 class="title">httpwindow.cpp Example File</h1>
<span class="small-subtitle">network/http/httpwindow.cpp</span>
<!-- $$$network/http/httpwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;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
** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &lt;QtNetwork&gt;</span>
<span class="preprocessor">#include &quot;httpwindow.h&quot;</span>
<span class="preprocessor">#include &quot;ui_authenticationdialog.h&quot;</span>
HttpWindow<span class="operator">::</span>HttpWindow(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
<span class="preprocessor">#ifdef Q_WS_MAEMO_5</span>
: <span class="type"><a href="qwidget.html">QWidget</a></span>(parent)
<span class="preprocessor">#else</span>
: <span class="type"><a href="qdialog.html">QDialog</a></span>(parent)
<span class="preprocessor">#endif</span>
{
<span class="preprocessor">#ifndef QT_NO_OPENSSL</span>
urlLineEdit <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>(<span class="string">&quot;https://qt-project.org/&quot;</span>);
<span class="preprocessor">#else</span>
urlLineEdit <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>(<span class="string">&quot;http://qt-project.org/&quot;</span>);
<span class="preprocessor">#endif</span>
urlLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;&amp;URL:&quot;</span>));
urlLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(urlLineEdit);
statusLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Please enter the URL of a file you want to &quot;</span>
<span class="string">&quot;download.&quot;</span>));
statusLabel<span class="operator">-</span><span class="operator">&gt;</span>setWordWrap(<span class="keyword">true</span>);
downloadButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;Download&quot;</span>));
downloadButton<span class="operator">-</span><span class="operator">&gt;</span>setDefault(<span class="keyword">true</span>);
quitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">&quot;Quit&quot;</span>));
quitButton<span class="operator">-</span><span class="operator">&gt;</span>setAutoDefault(<span class="keyword">false</span>);
buttonBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span>;
buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(downloadButton<span class="operator">,</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>ActionRole);
buttonBox<span class="operator">-</span><span class="operator">&gt;</span>addButton(quitButton<span class="operator">,</span> <span class="type"><a href="qdialogbuttonbox.html">QDialogButtonBox</a></span><span class="operator">::</span>RejectRole);
<span class="preprocessor">#ifndef Q_WS_MAEMO_5</span>
progressDialog <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qprogressdialog.html">QProgressDialog</a></span>(<span class="keyword">this</span>);
<span class="preprocessor">#endif</span>
connect(urlLineEdit<span class="operator">,</span> SIGNAL(textChanged(<span class="type"><a href="qstring.html">QString</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(enableDownloadButton()));
connect(<span class="operator">&amp;</span>qnam<span class="operator">,</span> SIGNAL(authenticationRequired(<span class="type"><a href="qnetworkreply.html">QNetworkReply</a></span><span class="operator">*</span><span class="operator">,</span><span class="type"><a href="qauthenticator.html">QAuthenticator</a></span><span class="operator">*</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(slotAuthenticationRequired(<span class="type"><a href="qnetworkreply.html">QNetworkReply</a></span><span class="operator">*</span><span class="operator">,</span><span class="type"><a href="qauthenticator.html">QAuthenticator</a></span><span class="operator">*</span>)));
<span class="preprocessor">#ifndef QT_NO_OPENSSL</span>
connect(<span class="operator">&amp;</span>qnam<span class="operator">,</span> SIGNAL(sslErrors(<span class="type"><a href="qnetworkreply.html">QNetworkReply</a></span><span class="operator">*</span><span class="operator">,</span><span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qsslerror.html">QSslError</a></span><span class="operator">&gt;</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(sslErrors(<span class="type"><a href="qnetworkreply.html">QNetworkReply</a></span><span class="operator">*</span><span class="operator">,</span><span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qsslerror.html">QSslError</a></span><span class="operator">&gt;</span>)));
<span class="preprocessor">#endif</span>
<span class="preprocessor">#ifndef Q_WS_MAEMO_5</span>
connect(progressDialog<span class="operator">,</span> SIGNAL(canceled())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(cancelDownload()));
<span class="preprocessor">#endif</span>
connect(downloadButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(downloadFile()));
connect(quitButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close()));
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>topLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>;
topLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(urlLabel);
topLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(urlLineEdit);
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>;
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addLayout(topLayout);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(statusLabel);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(buttonBox);
setLayout(mainLayout);
setWindowTitle(tr(<span class="string">&quot;HTTP&quot;</span>));
urlLineEdit<span class="operator">-</span><span class="operator">&gt;</span>setFocus();
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>startRequest(<span class="type"><a href="qurl.html">QUrl</a></span> url)
{
reply <span class="operator">=</span> qnam<span class="operator">.</span>get(<span class="type"><a href="qnetworkrequest.html">QNetworkRequest</a></span>(url));
connect(reply<span class="operator">,</span> SIGNAL(finished())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(httpFinished()));
connect(reply<span class="operator">,</span> SIGNAL(readyRead())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(httpReadyRead()));
connect(reply<span class="operator">,</span> SIGNAL(downloadProgress(<span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span><span class="operator">,</span><span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(updateDataReadProgress(<span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span><span class="operator">,</span><span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span>)));
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>downloadFile()
{
url <span class="operator">=</span> urlLineEdit<span class="operator">-</span><span class="operator">&gt;</span>text();
<span class="type"><a href="qfileinfo.html">QFileInfo</a></span> fileInfo(url<span class="operator">.</span>path());
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> fileInfo<span class="operator">.</span>fileName();
<span class="keyword">if</span> (fileName<span class="operator">.</span>isEmpty())
fileName <span class="operator">=</span> <span class="string">&quot;index.html&quot;</span>;
<span class="keyword">if</span> (<span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>exists(fileName)) {
<span class="keyword">if</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">&quot;HTTP&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;There already exists a file called %1 in &quot;</span>
<span class="string">&quot;the current directory. Overwrite?&quot;</span>)<span class="operator">.</span>arg(fileName)<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="operator">,</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>No)
<span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>No)
<span class="keyword">return</span>;
<span class="type"><a href="qfile.html">QFile</a></span><span class="operator">::</span>remove(fileName);
}
file <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qfile.html">QFile</a></span>(fileName);
<span class="keyword">if</span> (<span class="operator">!</span>file<span class="operator">-</span><span class="operator">&gt;</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>WriteOnly)) {
<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">&quot;HTTP&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Unable to save the file %1: %2.&quot;</span>)
<span class="operator">.</span>arg(fileName)<span class="operator">.</span>arg(file<span class="operator">-</span><span class="operator">&gt;</span>errorString()));
<span class="keyword">delete</span> file;
file <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">return</span>;
}
<span class="preprocessor">#ifndef Q_WS_MAEMO_5</span>
progressDialog<span class="operator">-</span><span class="operator">&gt;</span>setWindowTitle(tr(<span class="string">&quot;HTTP&quot;</span>));
progressDialog<span class="operator">-</span><span class="operator">&gt;</span>setLabelText(tr(<span class="string">&quot;Downloading %1.&quot;</span>)<span class="operator">.</span>arg(fileName));
<span class="preprocessor">#endif</span>
downloadButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">false</span>);
<span class="comment">// schedule the request</span>
httpRequestAborted <span class="operator">=</span> <span class="keyword">false</span>;
startRequest(url);
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>cancelDownload()
{
statusLabel<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Download canceled.&quot;</span>));
httpRequestAborted <span class="operator">=</span> <span class="keyword">true</span>;
reply<span class="operator">-</span><span class="operator">&gt;</span>abort();
downloadButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>httpFinished()
{
<span class="keyword">if</span> (httpRequestAborted) {
<span class="keyword">if</span> (file) {
file<span class="operator">-</span><span class="operator">&gt;</span>close();
file<span class="operator">-</span><span class="operator">&gt;</span>remove();
<span class="keyword">delete</span> file;
file <span class="operator">=</span> <span class="number">0</span>;
}
reply<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
<span class="preprocessor">#ifndef Q_WS_MAEMO_5</span>
progressDialog<span class="operator">-</span><span class="operator">&gt;</span>hide();
<span class="preprocessor">#endif</span>
<span class="keyword">return</span>;
}
<span class="preprocessor">#ifndef Q_WS_MAEMO_5</span>
progressDialog<span class="operator">-</span><span class="operator">&gt;</span>hide();
<span class="preprocessor">#endif</span>
file<span class="operator">-</span><span class="operator">&gt;</span>flush();
file<span class="operator">-</span><span class="operator">&gt;</span>close();
<span class="type"><a href="qvariant.html">QVariant</a></span> redirectionTarget <span class="operator">=</span> reply<span class="operator">-</span><span class="operator">&gt;</span>attribute(<span class="type"><a href="qnetworkrequest.html">QNetworkRequest</a></span><span class="operator">::</span>RedirectionTargetAttribute);
<span class="keyword">if</span> (reply<span class="operator">-</span><span class="operator">&gt;</span>error()) {
file<span class="operator">-</span><span class="operator">&gt;</span>remove();
<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">&quot;HTTP&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Download failed: %1.&quot;</span>)
<span class="operator">.</span>arg(reply<span class="operator">-</span><span class="operator">&gt;</span>errorString()));
downloadButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
} <span class="keyword">else</span> <span class="keyword">if</span> (<span class="operator">!</span>redirectionTarget<span class="operator">.</span>isNull()) {
<span class="type"><a href="qurl.html">QUrl</a></span> newUrl <span class="operator">=</span> url<span class="operator">.</span>resolved(redirectionTarget<span class="operator">.</span>toUrl());
<span class="keyword">if</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">&quot;HTTP&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Redirect to %1 ?&quot;</span>)<span class="operator">.</span>arg(newUrl<span class="operator">.</span>toString())<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="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Yes) {
url <span class="operator">=</span> newUrl;
reply<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
file<span class="operator">-</span><span class="operator">&gt;</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>WriteOnly);
file<span class="operator">-</span><span class="operator">&gt;</span>resize(<span class="number">0</span>);
startRequest(url);
<span class="keyword">return</span>;
}
} <span class="keyword">else</span> {
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> <span class="type"><a href="qfileinfo.html">QFileInfo</a></span>(<span class="type"><a href="qurl.html">QUrl</a></span>(urlLineEdit<span class="operator">-</span><span class="operator">&gt;</span>text())<span class="operator">.</span>path())<span class="operator">.</span>fileName();
statusLabel<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Downloaded %1 to %2.&quot;</span>)<span class="operator">.</span>arg(fileName)<span class="operator">.</span>arg(<span class="type"><a href="qdir.html">QDir</a></span><span class="operator">::</span>currentPath()));
downloadButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="keyword">true</span>);
}
reply<span class="operator">-</span><span class="operator">&gt;</span>deleteLater();
reply <span class="operator">=</span> <span class="number">0</span>;
<span class="keyword">delete</span> file;
file <span class="operator">=</span> <span class="number">0</span>;
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>httpReadyRead()
{
<span class="comment">// this slot gets called every time the QNetworkReply has new data.</span>
<span class="comment">// We read all of its new data and write it into the file.</span>
<span class="comment">// That way we use less RAM than when reading it at the finished()</span>
<span class="comment">// signal of the QNetworkReply</span>
<span class="keyword">if</span> (file)
file<span class="operator">-</span><span class="operator">&gt;</span>write(reply<span class="operator">-</span><span class="operator">&gt;</span>readAll());
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>updateDataReadProgress(<span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span> bytesRead<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qint64-typedef">qint64</a></span> totalBytes)
{
<span class="keyword">if</span> (httpRequestAborted)
<span class="keyword">return</span>;
<span class="preprocessor">#ifndef Q_WS_MAEMO_5</span>
progressDialog<span class="operator">-</span><span class="operator">&gt;</span>setMaximum(totalBytes);
progressDialog<span class="operator">-</span><span class="operator">&gt;</span>setValue(bytesRead);
<span class="preprocessor">#else</span>
Q_UNUSED(bytesRead);
Q_UNUSED(totalBytes);
<span class="preprocessor">#endif</span>
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>enableDownloadButton()
{
downloadButton<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(<span class="operator">!</span>urlLineEdit<span class="operator">-</span><span class="operator">&gt;</span>text()<span class="operator">.</span>isEmpty());
}
<span class="type">void</span> HttpWindow<span class="operator">::</span>slotAuthenticationRequired(<span class="type"><a href="qnetworkreply.html">QNetworkReply</a></span><span class="operator">*</span><span class="operator">,</span><span class="type"><a href="qauthenticator.html">QAuthenticator</a></span> <span class="operator">*</span>authenticator)
{
<span class="type"><a href="qdialog.html">QDialog</a></span> dlg;
Ui<span class="operator">::</span>Dialog ui;
ui<span class="operator">.</span>setupUi(<span class="operator">&amp;</span>dlg);
dlg<span class="operator">.</span>adjustSize();
ui<span class="operator">.</span>siteDescription<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;%1 at %2&quot;</span>)<span class="operator">.</span>arg(authenticator<span class="operator">-</span><span class="operator">&gt;</span>realm())<span class="operator">.</span>arg(url<span class="operator">.</span>host()));
<span class="comment">// Did the URL have information? Fill the UI</span>
<span class="comment">// This is only relevant if the URL-supplied credentials were wrong</span>
ui<span class="operator">.</span>userEdit<span class="operator">-</span><span class="operator">&gt;</span>setText(url<span class="operator">.</span>userName());
ui<span class="operator">.</span>passwordEdit<span class="operator">-</span><span class="operator">&gt;</span>setText(url<span class="operator">.</span>password());
<span class="keyword">if</span> (dlg<span class="operator">.</span>exec() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qdialog.html">QDialog</a></span><span class="operator">::</span>Accepted) {
authenticator<span class="operator">-</span><span class="operator">&gt;</span>setUser(ui<span class="operator">.</span>userEdit<span class="operator">-</span><span class="operator">&gt;</span>text());
authenticator<span class="operator">-</span><span class="operator">&gt;</span>setPassword(ui<span class="operator">.</span>passwordEdit<span class="operator">-</span><span class="operator">&gt;</span>text());
}
}
<span class="preprocessor">#ifndef QT_NO_OPENSSL</span>
<span class="type">void</span> HttpWindow<span class="operator">::</span>sslErrors(<span class="type"><a href="qnetworkreply.html">QNetworkReply</a></span><span class="operator">*</span><span class="operator">,</span><span class="keyword">const</span> <span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qsslerror.html">QSslError</a></span><span class="operator">&gt;</span> <span class="operator">&amp;</span>errors)
{
<span class="type"><a href="qstring.html">QString</a></span> errorString;
foreach (<span class="keyword">const</span> <span class="type"><a href="qsslerror.html">QSslError</a></span> <span class="operator">&amp;</span>error<span class="operator">,</span> errors) {
<span class="keyword">if</span> (<span class="operator">!</span>errorString<span class="operator">.</span>isEmpty())
errorString <span class="operator">+</span><span class="operator">=</span> <span class="string">&quot;, &quot;</span>;
errorString <span class="operator">+</span><span class="operator">=</span> error<span class="operator">.</span>errorString();
}
<span class="keyword">if</span> (<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;HTTP&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;One or more SSL errors has occurred: %1&quot;</span>)<span class="operator">.</span>arg(errorString)<span class="operator">,</span>
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Ignore <span class="operator">|</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Abort) <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>Ignore) {
reply<span class="operator">-</span><span class="operator">&gt;</span>ignoreSslErrors();
}
}
<span class="preprocessor">#endif</span></pre>
</div>
<!-- @@@network/http/httpwindow.cpp -->
</div>
</div>
</div>
<div class="ft">
<span></span>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">&copy;</acronym> 2015 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.</p>
<br />
<p>
The documentation provided herein is licensed under the terms of the
<a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
License version 1.3</a> as published by the Free Software Foundation.</p>
<p>
Documentation sources may be obtained from <a href="http://www.qt-project.org">
www.qt-project.org</a>.</p>
<br />
<p>
Qt and respective logos are trademarks of The Qt Company Ltd
in Finland and/or other countries worldwide. All other trademarks are property
of their respective owners. <a title="Privacy Policy"
href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
</div>
<script src="scripts/functions.js" type="text/javascript"></script>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink