C++ Element::firstChild方法代码示例

void KHTMLReader::parse_head(DOM::Element e)
{
    for (DOM::Element items = e.firstChild();!items.isNull();items = items.nextSibling()) {
        if (items.tagName().string().lower() == "title") {
            DOM::Text t = items.firstChild();
            if (!t.isNull()) {
                _writer->createDocInfo("HTML import filter", t.data().string());
            }
        }
    }
}

bool KHTMLReader::parse_ul(DOM::Element e)
{
    _list_depth++;
    bool popstateneeded = false;
    for (DOM::Node items = e.firstChild();!items.isNull();items = items.nextSibling()) {
        if (items.nodeName().string().toLower() == "li") {
            if (popstateneeded) {
                popState();
                //popstateneeded = false;
            }
            pushNewState();
            startNewLayout();
            popstateneeded = true;
            _writer->layoutAttribute(state()->paragraph, "COUNTER", "numberingtype", "1");
            _writer->layoutAttribute(state()->paragraph, "COUNTER", "righttext", ".");
            if (e.tagName().string().toLower() == "ol") {
                _writer->layoutAttribute(state()->paragraph, "COUNTER", "type", "1");
                _writer->layoutAttribute(state()->paragraph, "COUNTER", "numberingtype", "1");
                _writer->layoutAttribute(state()->paragraph, "COUNTER", "righttext", ".");
            } else {
                _writer->layoutAttribute(state()->paragraph, "COUNTER", "type", "10");
                _writer->layoutAttribute(state()->paragraph, "COUNTER", "numberingtype", "");
                _writer->layoutAttribute(state()->paragraph, "COUNTER", "righttext", "");
            }
            _writer->layoutAttribute(state()->paragraph, "COUNTER", "depth", QString("%1").arg(_list_depth - 1));
        }
        parseNode(items);
    }
    if (popstateneeded)
        popState();
    _list_depth--;
    return false;
}

void DOMTreeView::showRecursive(const DOM::Node &pNode, const DOM::Node &node, uint depth)
{
  DOMListViewItem *cur_item;
  DOMListViewItem *parent_item = m_itemdict.value(pNode.handle(), 0);

  if (depth > m_maxDepth) {
    m_maxDepth = depth;
  }

  if (depth == 0) {
    cur_item = new DOMListViewItem(node, m_listView);
    m_document = pNode.ownerDocument();
  } else {
    cur_item = new DOMListViewItem(node, parent_item);
  }

  //kDebug(90180) << node.nodeName().string() << " [" << depth << "]";
  cur_item = addElement (node, cur_item, false);
  m_listView->setItemExpanded(cur_item, depth < m_expansionDepth);

  if(node.handle()) {
    m_itemdict.insert(node.handle(), cur_item);
  }

  DOM::Node child = node.firstChild();
  if (child.isNull()) {
    DOM::HTMLFrameElement frame = node;
    if (!frame.isNull()) {
      child = frame.contentDocument().documentElement();
    } else {
      DOM::HTMLIFrameElement iframe = node;
      if (!iframe.isNull())
        child = iframe.contentDocument().documentElement();
    }
  }
  while(!child.isNull()) {
    showRecursive(node, child, depth + 1);
    child = child.nextSibling();
  }

  const DOM::Element element = node;
  if (!m_bPure) {
    if (!element.isNull() && !element.firstChild().isNull()) {
      if(depth == 0) {
	cur_item = new DOMListViewItem(node, m_listView, cur_item);
	m_document = pNode.ownerDocument();
      } else {
	cur_item = new DOMListViewItem(node, parent_item, cur_item);
      }
      //kDebug(90180) << "</" << node.nodeName().string() << ">";
      cur_item = addElement(element, cur_item, true);
//       m_listView->setItemExpanded(cur_item, depth < m_expansionDepth);
    }
  }
}

bool KHTMLReader::parse_a(DOM::Element e)
{
    QString url = e.getAttribute("href").string();
    if (!url.isEmpty()) {
        QString linkName;
        DOM::Text t = e.firstChild();
        if (t.isNull()) {
            /* Link without text -> just drop it*/
            return false; /* stop parsing recursively */
        }
        linkName = t.data().string().simplified();
        t.setData(DOM::DOMString("#")); // replace with '#'
        _writer->createLink(state()->paragraph, linkName, url);
    }
    return true; /* stop parsing recursively */
}

bool KHTMLReader::parse_pre(DOM::Element e)
{
#if 0 // see Bug #74601 (normal): kword doesn't recognize PRE-tags in HTML
    //pushNewState();
    /// \todo set fixed width font
    DOM::HTMLElement htmlelement(e);
    if (! htmlelement.isNull())
        _writer->addText(state()->paragraph, htmlelement.innerHTML().string(), 1);
    startNewParagraph();
    //popState();
    return false; // children are already handled.
#else
    pushNewState();
    state()->in_pre_mode = true;
    for (DOM::Node q = e.firstChild(); !q.isNull(); q = q.nextSibling()) {
        parseNode(q); // parse everything...
    }
    popState();
    return false; // children are already handled.
#endif
}

void DOMTreeView::saveRecursive(const DOM::Node &pNode, int indent)
{
  const QString nodeName(pNode.nodeName().string());
  QString text;
  QString strIndent;
  strIndent.fill(' ', indent);
  const DOM::Element element = static_cast<const DOM::Element>(pNode);

  text = strIndent;

  if ( !element.isNull() ) {
    if (nodeName.at(0)=='-') {
      /* Don't save khtml internal tags '-konq..'
       * Approximating it with <DIV>
       */
      text += "<DIV> <!-- -KONG_BLOCK -->";
    } else {
      text += "<" + nodeName;

      QString attributes;
      DOM::Attr attr;
      const DOM::NamedNodeMap attrs = element.attributes();
      unsigned long lmap = attrs.length();
      for( uint j=0; j<lmap; j++ ) {
	attr = static_cast<DOM::Attr>(attrs.item(j));
	attributes += " " + attr.name().string() + "=\"" + attr.value().string() + "\"";
      }
      if (!(attributes.isEmpty())){
	text += " ";
      }

      text += attributes.simplifyWhiteSpace();

      if(element.firstChild().isNull()) {
	text += "/>";
      } else {
	text += ">";
      }
    }
  } else {
    text = strIndent + pNode.nodeValue().string();
  }

  kdDebug(90180) << text << endl;
  if (!(text.isEmpty())) {
    (*m_textStream) << text << endl;
  }

  DOM::Node child = pNode.firstChild();
  while(!child.isNull()) {
    saveRecursive(child, indent+2);
    child = child.nextSibling();
  }

  if (!(element.isNull()) && (!(element.firstChild().isNull()))) {
    if (nodeName.at(0)=='-') {
      text = strIndent + "</DIV> <!-- -KONG_BLOCK -->";
    } else {
      text = strIndent + "</" + pNode.nodeName().string() + ">";
    }
    kdDebug(90180) << text << endl;
    (*m_textStream) << text << endl;
  }
}

void DOMTreeView::addElement ( const DOM::Node &node,  DOMListViewItem *cur_item, bool isLast)
{
  cur_item->setClosing(isLast);

  const QString nodeName(node.nodeName().string());
  QString text;
  const DOM::Element element = node;
  if (!element.isNull()) {
    if (!m_bPure) {
      if (isLast) {
	text ="</";
      } else {
	text = "<";
      }
      text += nodeName;
    } else {
      text = nodeName;
    }

    if (m_bShowAttributes && !isLast) {
      QString attributes;
      DOM::Attr attr;
      DOM::NamedNodeMap attrs = element.attributes();
      unsigned long lmap = attrs.length();
      for( unsigned int j=0; j<lmap; j++ ) {
	attr = static_cast<DOM::Attr>(attrs.item(j));
	attributes += " " + attr.name().string() + "=\"" + attr.value().string() + "\"";
      }
      if (!(attributes.isEmpty())) {
	text += " ";
      }
      text += attributes.simplifyWhiteSpace();
    }

    if (!m_bPure) {
      if(element.firstChild().isNull()) {
	text += "/>";
      } else {
	text += ">";
      }
    }
    cur_item->setText(0, text);
  } else {
    text = "`" + node.nodeValue().string() + "'";

    // Hacks to deal with PRE
    QTextStream ts( text, IO_ReadOnly );
    while (!ts.eof()) {
      const QString txt(ts.readLine());
      const QFont font(KGlobalSettings::fixedFont());
      cur_item->setFont( font );
      cur_item->setText(0, txt);

      if(node.handle()) {
	m_itemdict.insert(node.handle(), cur_item);
      }

      DOMListViewItem *parent;
      if (cur_item->parent()) {
	parent = static_cast<DOMListViewItem *>(cur_item->parent());
      } else {
	parent = cur_item;
      }
      cur_item = new DOMListViewItem(node, parent, cur_item);
    }
    // This is one is too much
    DOMListViewItem *notLastItem = static_cast<DOMListViewItem *>(cur_item->itemAbove());
    delete cur_item;
    cur_item = notLastItem;
  }

  if (m_bHighlightHTML && node.ownerDocument().isHTMLDocument()) {
    highlightHTML(cur_item, nodeName);
  }
}

bool KHTMLReader::parse_table(DOM::Element e)
{
    if (_writer->isInTable()) {
        // We are already inside of a table. Tables in tables are not supported
        // yet. So, just add that table-content as text.
        for (DOM::Node rows = e.firstChild().firstChild();!rows.isNull();rows = rows.nextSibling())
            if (!rows.isNull() && rows.nodeName().string().toLower() == "tr")
                for (DOM::Node cols = rows.firstChild();!cols.isNull();cols = cols.nextSibling())
                    if (!cols.isNull())
                        parseNode(cols);
        return false;
    }

    DOM::Element table_body = e.firstChild();
    if (table_body.isNull()) {
        // If the table_body is empty, we don't continue cause else
        // KHTML will throw a DOM::DOMException if we try to access
        // the null element.
        return true;
    }

    int tableno = _writer->createTable();
    int nrow = 0;
    int ncol = 0;
    bool has_borders = false;
    QColor bgcolor = parsecolor("#FFFFFF");

    if (!table_body.getAttribute("bgcolor").string().isEmpty())
        bgcolor = parsecolor(table_body.getAttribute("bgcolor").string());
    if ((e.getAttribute("border").string().toInt() > 0))
        has_borders = true;

    // fixme rewrite this proper
    //(maybe using computed sizes from khtml if thats once exported)
    for (DOM::Node rowsnode = table_body.firstChild();!rowsnode.isNull();rowsnode = rowsnode.nextSibling()) {
        DOM::Element rows = rowsnode;
        if (!rows.isNull() && rows.tagName().string().toLower() == "tr") {
            QColor obgcolor = bgcolor;
            if (!rows.getAttribute("bgcolor").string().isEmpty())
                bgcolor = parsecolor(rows.getAttribute("bgcolor").string());

            ncol = 0;
            for (DOM::Node colsnode = rows.firstChild();!colsnode.isNull();colsnode = colsnode.nextSibling()) {
                DOM::Element cols = colsnode;
                const QString nodename = cols.isNull() ? QString() : cols.nodeName().string().toLower();
                if (nodename == "td" || nodename == "th") {
                    QColor bbgcolor = bgcolor;
                    if (!cols.getAttribute("bgcolor").string().isEmpty())
                        bgcolor = parsecolor(cols.getAttribute("bgcolor").string());

                    pushNewState();
                    QRect colrect = cols.getRect();
                    state()->frameset = _writer->createTableCell(tableno, nrow, ncol, 1, colrect);
                    state()->frameset.firstChild().toElement().setAttribute("bkRed", bgcolor.red());
                    state()->frameset.firstChild().toElement().setAttribute("bkGreen", bgcolor.green());
                    state()->frameset.firstChild().toElement().setAttribute("bkBlue", bgcolor.blue());
                    if (has_borders) {
                        state()->frameset.firstChild().toElement().setAttribute("lWidth", 1);
                        state()->frameset.firstChild().toElement().setAttribute("rWidth", 1);
                        state()->frameset.firstChild().toElement().setAttribute("bWidth", 1);
                        state()->frameset.firstChild().toElement().setAttribute("tWidth", 1);
                    }

                    // fixme don't guess. get it right.
                    state()->paragraph = _writer->addParagraph(state()->frameset);
                    parseNode(cols);
                    _writer->cleanUpParagraph(state()->paragraph);
                    popState();
                    ncol++;
                    bgcolor = bbgcolor;
                }
            }
            nrow++;
            bgcolor = obgcolor;
        }
    }
    _writer->finishTable(tableno/*,0,0,r.right()-r.left(),r.bottom()-r.top()*/); // FIXME find something better.
    startNewParagraph(false, false);
    _writer->createInline(state()->paragraph, _writer->fetchTableCell(tableno, 0, 0));
    startNewParagraph(false, false);
    return false; // we do our own recursion
}