/// <summary>
/// Get the text to copy or use for drag and drop operations
/// </summary>
/// <returns>The text to use or null if there is nothing to copy</returns>
private string GetTextToCopy()
{
EntityReference r = tvEntities.SelectedItem as EntityReference;
string textToCopy = null;
if (r != null)
{
switch (r.EntityType)
{
case EntityType.File:
// Not useable
break;
case EntityType.Token:
Token t = (Token)r.Tag;
textToCopy = t.ToToken();
break;
case EntityType.Image:
ImageReference ir = (ImageReference)r.Tag;
if (rbMediaLink.IsChecked.Value)
{
textToCopy = ir.ToMediaLink();
}
else
if (rbMediaLinkInline.IsChecked.Value)
{
textToCopy = ir.ToMediaLinkInline();
}
else
if (rbExternalLink.IsChecked.Value)
{
textToCopy = ir.ToExternalLink();
}
else
{
textToCopy = ir.ToImageLink();
}
break;
case EntityType.CodeSnippet:
CodeReference cr = (CodeReference)r.Tag;
textToCopy = cr.ToCodeReference();
break;
case EntityType.TocEntry:
TocEntry toc = (TocEntry)r.Tag;
// MAML topic?
if (!String.IsNullOrEmpty(toc.Id))
{
if (rbMamlLink.IsChecked.Value)
{
textToCopy = String.Format(CultureInfo.InvariantCulture,
"<link xlink:href=\"{0}\" />", (toc.Id ?? "[Unknown ID]"));
}
else
if (rbConceptualLink.IsChecked.Value)
{
textToCopy = String.Format(CultureInfo.InvariantCulture,
"<conceptualLink target=\"{0}\" />", (toc.Id ?? "[Unknown ID]"));
}
else
{
textToCopy = String.Format(CultureInfo.InvariantCulture,
"<a href=\"html/{0}.htm\">{1}</a>", toc.Id, toc.Title);
}
}
else
{
textToCopy = toc.ToAnchor(toc.Title);
}
break;
default: // Code entity reference
CodeEntityReference ce = (CodeEntityReference)r.Tag;
if (rbCodeEntityRef.IsChecked.Value)
{
textToCopy = ce.ToCodeEntityReference();
}
else
{
textToCopy = ce.ToSee();
}
break;
}
}
return(textToCopy);
}