qt5base-lts/examples/xml/saxbookmarks/xbelhandler.cpp

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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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:
**
** "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 Digia Plc and its Subsidiary(-ies) 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
** "AS IS" 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets>
#include "xbelhandler.h"
XbelHandler::XbelHandler(QTreeWidget *treeWidget)
: treeWidget(treeWidget)
{
item = 0;
metXbelTag = false;
QStyle *style = treeWidget->style();
folderIcon.addPixmap(style->standardPixmap(QStyle::SP_DirClosedIcon),
QIcon::Normal, QIcon::Off);
folderIcon.addPixmap(style->standardPixmap(QStyle::SP_DirOpenIcon),
QIcon::Normal, QIcon::On);
bookmarkIcon.addPixmap(style->standardPixmap(QStyle::SP_FileIcon));
}
bool XbelHandler::startElement(const QString & /* namespaceURI */,
const QString & /* localName */,
const QString &qName,
const QXmlAttributes &attributes)
{
if (!metXbelTag && qName != "xbel") {
errorStr = QObject::tr("The file is not an XBEL file.");
return false;
}
if (qName == "xbel") {
QString version = attributes.value("version");
if (!version.isEmpty() && version != "1.0") {
errorStr = QObject::tr("The file is not an XBEL version 1.0 file.");
return false;
}
metXbelTag = true;
} else if (qName == "folder") {
item = createChildItem(qName);
item->setFlags(item->flags() | Qt::ItemIsEditable);
item->setIcon(0, folderIcon);
item->setText(0, QObject::tr("Folder"));
bool folded = (attributes.value("folded") != "no");
treeWidget->setItemExpanded(item, !folded);
} else if (qName == "bookmark") {
item = createChildItem(qName);
item->setFlags(item->flags() | Qt::ItemIsEditable);
item->setIcon(0, bookmarkIcon);
item->setText(0, QObject::tr("Unknown title"));
item->setText(1, attributes.value("href"));
} else if (qName == "separator") {
item = createChildItem(qName);
item->setFlags(item->flags() & ~Qt::ItemIsSelectable);
item->setText(0, QString(30, 0xB7));
}
currentText.clear();
return true;
}
bool XbelHandler::endElement(const QString & /* namespaceURI */,
const QString & /* localName */,
const QString &qName)
{
if (qName == "title") {
if (item)
item->setText(0, currentText);
} else if (qName == "folder" || qName == "bookmark"
|| qName == "separator") {
item = item->parent();
}
return true;
}
bool XbelHandler::characters(const QString &str)
{
currentText += str;
return true;
}
bool XbelHandler::fatalError(const QXmlParseException &exception)
{
QMessageBox::information(treeWidget->window(), QObject::tr("SAX Bookmarks"),
QObject::tr("Parse error at line %1, column %2:\n"
"%3")
.arg(exception.lineNumber())
.arg(exception.columnNumber())
.arg(exception.message()));
return false;
}
QString XbelHandler::errorString() const
{
return errorStr;
}
QTreeWidgetItem *XbelHandler::createChildItem(const QString &tagName)
{
QTreeWidgetItem *childItem;
if (item) {
childItem = new QTreeWidgetItem(item);
} else {
childItem = new QTreeWidgetItem(treeWidget);
}
childItem->setData(0, Qt::UserRole, tagName);
return childItem;
}