xbelhandler.cpp Example File

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 #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;
 }