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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Script Generator project on Qt Labs.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
function tr(s) { return s; }
function RSSListing(parent)
{
QWidget.call(this, parent);
this.xml = new QXmlStreamReader();
this.currentTag = "";
this.linkString = "";
this.titleString = "";
this.connectionId = -1;
this.lineEdit = new QLineEdit(this);
this.lineEdit.text = "http://labs.trolltech.com/blogs/feed";
this.fetchButton = new QPushButton(tr("Fetch"), this);
this.abortButton = new QPushButton(tr("Abort"), this);
this.abortButton.enabled = false;
this.treeWidget = new QTreeWidget(this);
this.treeWidget["itemActivated(QTreeWidgetItem*, int)"].connect(
this, this.itemActivated);
var headerLabels = new Array();
headerLabels.push(tr("Title"));
headerLabels.push(tr("Link"));
this.treeWidget.setHeaderLabels(headerLabels);
this.treeWidget.header().setResizeMode(QHeaderView.ResizeToContents);
this.http = new QHttp(this);
this.http.readyRead.connect(this, this.readData);
this.http.requestFinished.connect(this, this.finished);
this.lineEdit.returnPressed.connect(this, this.fetch);
this.fetchButton.clicked.connect(this, this.fetch);
this.abortButton.clicked.connect(this.http, this.http.abort);
var layout = new QVBoxLayout(this);
var hboxLayout = new QHBoxLayout();
// ### working around problem with addWidget() binding
hboxLayout.addWidget(this.lineEdit, 0, Qt.AlignLeft);
hboxLayout.addWidget(this.fetchButton, 0, Qt.AlignLeft);
hboxLayout.addWidget(this.abortButton, 0, Qt.AlignLeft);
layout.addLayout(hboxLayout);
layout.addWidget(this.treeWidget, 0, Qt.AlignLeft);
this.windowTitle = tr("RSS listing example");
this.resize(640,480);
}
RSSListing.prototype = new QWidget();
RSSListing.prototype.fetch = function()
{
this.lineEdit.readOnly = true;
this.fetchButton.enabled = false;
this.abortButton.enabled = true;
this.treeWidget.clear();
this.xml.clear();
var url = new QUrl(this.lineEdit.text);
this.http.setHost(url.host());
this.connectionId = this.http.get(url.path());
}
RSSListing.prototype.readData = function(resp)
{
if (resp.statusCode() != 200)
this.http.abort();
else {
this.xml.addData(this.http.readAll());
this.parseXml();
}
}
RSSListing.prototype.finished = function(id, error)
{
if (error) {
print("Received error during HTTP fetch."); // ### qWarning()
this.lineEdit.readOnly = false;
this.abortButton.enabled = false;
this.fetchButton.enabled = true;
} else if (id == this.connectionId) {
this.lineEdit.readOnly = false;
this.abortButton.enabled = false;
this.fetchButton.enabled = true;
}
}
RSSListing.prototype.parseXml = function()
{
while (!this.xml.atEnd()) {
this.xml.readNext();
if (this.xml.isStartElement()) {
if (this.xml.name() == "item")
this.linkString = this.xml.attributes().value("rss:about").toString();
this.currentTag = this.xml.name().toString();
} else if (this.xml.isEndElement()) {
if (this.xml.name() == "item") {
var item = new QTreeWidgetItem();
item.setText(0, this.titleString);
item.setText(1, this.linkString);
this.treeWidget.addTopLevelItem(item);
this.titleString = "";
this.linkString = "";
}
} else if (this.xml.isCharacters() && !this.xml.isWhitespace()) {
if (this.currentTag == "title")
this.titleString += this.xml.text().toString();
else if (this.currentTag == "link")
this.linkString += this.xml.text().toString();
}
}
if (this.xml.hasError() && (this.xml.error() != QXmlStreamReader.PrematureEndOfDocumentError)) {
print("XML ERROR:", this.xml.lineNumber() + ":", this.xml.errorString());
this.http.abort();
}
}
RSSListing.prototype.itemActivated = function(item)
{
QDesktopServices.openUrl(new QUrl(item.text(1)));
}
var rsslisting = new RSSListing();
rsslisting.show();
QCoreApplication.exec();
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