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;
  }