/// <summary>
/// Inserts an attribute to an XElement in the source code editor.
/// </summary>
/// <param name='el'>
/// the tag's XElement instance
/// </param>
/// <param name='key'>
/// Key.
/// </param>
/// <param name='value'>
/// Value.
/// </param>
public void InsertAttribute(XElement el, string key, string value)
{
int line = el.Region.EndLine;
int column = 1;
// a preceding space or nothing
string preambula = String.Empty;
// a space or nothing after the last quote
string ending = String.Empty;
if (el.IsSelfClosing)
{
column = el.Region.EndColumn - 2; // "/>"
// a space before the /> of the tag
ending = " ";
}
else
{
column = el.Region.EndColumn - 1; // ">"
// no need for a space in the end of an openning tag
}
// check if a space is needed infront of the attribute
// or the method should write at the first column of a new line
if (column > 1)
{
string whatsBeforeUs = document.GetTextFromEditor(line, column - 1, line, column);
if (!String.IsNullOrWhiteSpace(whatsBeforeUs))
{
preambula = " ";
}
}
// finally, insert the result
document.InsertText(
new TextLocation(line, column),
String.Format("{0}{1}=\"{2}\"{3}", preambula, key, value, ending)
);
}
/// <summary>
/// Serializes a XNode to a HTML tag. This is a recursive method.
/// </summary>
/// <param name='node'>
/// Node.
/// </param>
/// <param name='sb'>
/// A string builder instance.
/// </param>
void SerializeNode(XNode node, StringBuilder sb)
{
prevTagLocation = node.Region.End;
var element = node as XElement;
if (element == null)
{
return;
}
string id = XDocumentHelper.GetAttributeValueCI(element.Attributes, "id");
// Controls are runat="server" and have unique id in the Container
if (element.Name.HasPrefix || XDocumentHelper.IsRunAtServer(element))
{
IComponent component = host.GetComponent(id);
// HTML controls, doesn't need special rendering
var control = component as Control;
// genarete placeholder
if (control != null)
{
StringWriter strWriter = new StringWriter();
HtmlTextWriter writer = new HtmlTextWriter(strWriter);
control.RenderControl(writer);
writer.Close();
strWriter.Flush();
sb.Append(strWriter.ToString());
strWriter.Close();
if (!element.IsSelfClosing)
{
prevTagLocation = element.ClosingTag.Region.End;
}
return;
}
}
// strip script tags
if (element.Name.Name.ToLower() == "script")
{
return;
}
// the node is a html element
sb.AppendFormat("<{0}", element.Name.FullName);
// print the attributes
foreach (MonoDevelop.Xml.StateEngine.XAttribute attr in element.Attributes)
{
string name = attr.Name.Name.ToLower();
// strip runat and on* event attributes
if ((name != "runat") && (name.Substring(0, 2).ToLower() != "on"))
{
sb.AppendFormat(" {0}=\"{1}\"", attr.Name.FullName, attr.Value);
}
}
if (element.IsSelfClosing)
{
sb.Append(" />");
}
else
{
sb.Append(">");
// we are currentyl on the head tag
// add designer content - js and css
if (element.Name.Name.ToLower() == "head")
{
sb.Append(designerContext);
}
if (element.Name.Name.ToLower() == "body")
{
GetDesignerInitParams(sb);
}
// serializing the childnodes if any
foreach (MonoDevelop.Xml.StateEngine.XNode nd in element.Nodes)
{
// get the text before the openning tag of the child element
sb.Append(document.GetTextFromEditor(prevTagLocation, nd.Region.Begin));
// and the element itself
SerializeNode(nd, sb);
}
// printing the text after the closing tag of the child elements
int lastChildEndLine = element.Region.EndLine;
int lastChildEndColumn = element.Region.EndColumn;
// if the element have 1+ children
if (element.LastChild != null)
{
var lastChild = element.LastChild as MonoDevelop.Xml.StateEngine.XElement;
// the last child is an XML tag
if (lastChild != null)
{
// the tag is selfclosing
if (lastChild.IsSelfClosing)
{
lastChildEndLine = lastChild.Region.EndLine;
lastChildEndColumn = lastChild.Region.EndColumn;
// the tag is not selfclosing and has a closing tag
}
else if (lastChild.ClosingTag != null)
{
lastChildEndLine = lastChild.ClosingTag.Region.EndLine;
lastChildEndColumn = lastChild.ClosingTag.Region.EndColumn;
}
else
{
// TODO: the element is not closed. Warn the user
}
// the last child is not a XML element. Probably AspNet tag. TODO: find the end location of that tag
}
else
{
lastChildEndLine = element.LastChild.Region.EndLine;
lastChildEndLine = element.LastChild.Region.EndLine;
}
}
if (element.ClosingTag != null)
{
sb.Append(document.GetTextFromEditor(new TextLocation(lastChildEndLine, lastChildEndColumn), element.ClosingTag.Region.Begin));
prevTagLocation = element.ClosingTag.Region.End;
}
else
{
// TODO: the element is not closed. Warn the user
}
sb.AppendFormat("</{0}>", element.Name.FullName);
}
}
