/*********************************************************************/
public void Clean(HtmlToXml objParser)
{
while (this.Children.Count > 0)
{
Node objNode = this.Children[0];
// Remove text nodes at the beginning that are empty
if ((objNode is TextNode) && (objNode as TextNode).ToString().Trim() == "")
{
this.Children.RemoveAt(0);
}
else
{
break;
}
}
while (this.Children.Count > 0)
{
Node objNode = this.Children[this.Children.Count - 1];
// Remove text nodes at the end that are empty
if ((objNode is TextNode) && (objNode as TextNode).ToString().Trim() == "")
{
this.Children.RemoveAt(this.Children.Count - 1);
}
else
{
break;
}
}
}
/*********************************************************************/
protected virtual bool WriteElement(HtmlToXml objParser, Element objElement, Element objParent, StringBuilder sb, int iLevel)
{
switch (Allowed(objElement, objParent))
{
case ElementAction.Remove:
return(false);
case ElementAction.Allowed:
return(objElement.Write(objParser, sb, iLevel));
case ElementAction.Convert:
// ??? Not yet implemented
return(false);
case ElementAction.PromoteChildren:
default:
break;
}
bool bEmpty = true;
foreach (Node objNode in objElement.Children)
{
if (this.Write(objParser, objNode, objParent, sb, iLevel + 1))
{
bEmpty = false;
}
}
return(!bEmpty);
}
/*********************************************************************/
public override bool Write(HtmlToXml objParser, StringBuilder sb, int iLevel)
{
objParser.WriteIndentation(sb, iLevel);
sb.Append(m_strText + objParser.NewLine);
return(true);
}
/*********************************************************************/
public virtual bool Write(HtmlToXml objParser, Node objNode, Element objParent, StringBuilder sb, int iLevel)
{
if (objNode is Element)
{
return(WriteElement(objParser, objNode as Element, objParent, sb, iLevel));
}
return(objNode.Write(objParser, sb, iLevel));
}
/*********************************************************************/
public Element(HtmlToXml objParser, string strName)
{
m_strName = HtmlToXml.FormatName(strName, false);
if (m_strName != "__" && m_strName == "")
{
throw new Exception("Illegal Element name: \"" + strName + "\"");
}
m_strName = strName;
m_objParser = objParser;
}
/*********************************************************************/
public override bool Write(HtmlToXml objParser, StringBuilder sb, int iLevel)
{
objParser.WriteIndentation(sb, iLevel);
// Remove duplicate spaces and replace newlines and tabs with spaces. Encode < and > and &
string strText = m_strText;
// Encode < and > and &
strText = strText.Replace("&", "&").Replace("<", "<").Replace(">", ">").Replace("\"", """).Trim();
if (strText != "")
{
sb.Append(strText);
return(true);
}
return(false);
}
/*********************************************************************/
public override bool Write(HtmlToXml objParser, StringBuilder sb, int iLevel)
{
bool bEmpty = true;
string strAttributes = PackAttributes();
if (strAttributes != "")
{
bEmpty = false;
}
if (m_aChildren.Count > 0)
{
string strBegin = "";
if (this.Name != "__")
{
strBegin = string.Format("<{0}{1}>" + m_objParser.NewLine, this.Name, strAttributes);
}
StringBuilder sbChildren = new StringBuilder();
foreach (Node objNode in this.Children)
{
if (m_objParser.Write(objParser, objNode, objNode.Parent, sbChildren, iLevel + 1))
{
bEmpty = false;
}
}
if (m_objParser.RemoveEmpties && bEmpty && !m_objParser.EmptiesAllowed(this))
{
return(false);
}
if (this.Name != "__")
{
m_objParser.WriteIndentation(sb, iLevel);
sb.Append(" " + strBegin);
sb.Append(sbChildren.ToString());
m_objParser.WriteIndentation(sb, iLevel);
sb.AppendFormat("</{0}> " + m_objParser.NewLine, this.Name);
}
else
{
sb.Append(" " + sbChildren.ToString() + " ");
}
}
else
{
if (m_objParser.RemoveEmpties && bEmpty && !m_objParser.EmptiesAllowed(this))
{
return(false);
}
m_objParser.WriteIndentation(sb, iLevel);
sb.AppendFormat(" <{0}{1} /> " + m_objParser.NewLine, this.Name, strAttributes);
}
return(!bEmpty);
}
/*********************************************************************/
public Attribute(string strName, string strValue)
{
m_strName = HtmlToXml.FormatName(strName, true);
m_strValue = strValue;
}
/*********************************************************************/ public abstract bool Write(HtmlToXml objParser, StringBuilder sb, int iLevel);
