xbelhandler.cpp Example File
saxbookmarks/xbelhandler.cpp
#include <QtWidgets>
#include "xbelhandler.h"
static inline QString versionAttribute() { return QStringLiteral("version"); }
static inline QString hrefAttribute() { return QStringLiteral("href"); }
static inline QString foldedAttribute() { return QStringLiteral("folded"); }
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 & ,
const QString & ,
const QString &qName,
const QXmlAttributes &attributes)
{
if (!metXbelTag && qName != QLatin1String("xbel")) {
errorStr = QObject::tr("The file is not an XBEL file.");
return false;
}
if (qName == QLatin1String("xbel")) {
QString version = attributes.value(versionAttribute());
if (!version.isEmpty() && version != QLatin1String("1.0")) {
errorStr = QObject::tr("The file is not an XBEL version 1.0 file.");
return false;
}
metXbelTag = true;
} else if (qName == QLatin1String("folder")) {
item = createChildItem(qName);
item->setFlags(item->flags() | Qt::ItemIsEditable);
item->setIcon(0, folderIcon);
item->setText(0, QObject::tr("Folder"));
bool folded = (attributes.value(foldedAttribute()) != QLatin1String("no"));
treeWidget->setItemExpanded(item, !folded);
} else if (qName == QLatin1String("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(hrefAttribute()));
} else if (qName == QLatin1String("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 & ,
const QString & ,
const QString &qName)
{
if (qName == QLatin1String("title")) {
if (item)
item->setText(0, currentText);
} else if (qName == QLatin1String("folder") || qName == QLatin1String("bookmark")
|| qName == QLatin1String("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;
}