public void HtmlTagCallback (HtmlTagContext ctx, HtmlWriter htmlWriter)
{
if (ctx.TagId != HtmlTagId.Image || ctx.IsEndTag) {
ctx.WriteTag (htmlWriter, true);
return;
}
// write the IMG tag, but don't write out the attributes.
ctx.WriteTag (htmlWriter, false);
// manually write the attributes so that we can replace the SRC attributes
foreach (var attribute in ctx.Attributes) {
if (attribute.Id == HtmlAttributeId.Src) {
int index;
Uri uri;
// parse the <img src=...> attribute value into a Uri
if (Uri.IsWellFormedUriString (attribute.Value, UriKind.Absolute))
uri = new Uri (attribute.Value, UriKind.Absolute);
else
uri = new Uri (attribute.Value, UriKind.Relative);
// locate the index of the attachment within the multipart/related (if it exists)
if ((index = related.IndexOf (uri)) != -1) {
var attachment = related[index] as MimePart;
if (attachment == null) {
// the body part is not a basic leaf part (IOW it's a multipart or message-part)
htmlWriter.WriteAttribute (attribute);
continue;
}
var data = GetDataUri (attachment);
htmlWriter.WriteAttributeName (attribute.Name);
htmlWriter.WriteAttributeValue (data);
} else {
htmlWriter.WriteAttribute (attribute);
}
}
}
}
static void DefaultHtmlTagCallback (HtmlTagContext tagContext, HtmlWriter htmlWriter)
{
tagContext.WriteTag (htmlWriter, true);
}
void HtmlTagCallback(HtmlTagContext ctx, HtmlWriter htmlWriter)
{
if (ctx.TagId == HtmlTagId.Image && !ctx.IsEndTag && _stack.Count > 0)
{
ctx.WriteTag(htmlWriter, false);
// replace the src attribute with a file:// URL
foreach (var attribute in ctx.Attributes)
{
if (attribute.Id == HtmlAttributeId.Src)
{
MimePart image;
if (!TryGetImage(attribute.Value, out image))
{
htmlWriter.WriteAttribute(attribute);
continue;
}
var url = SaveImage(image, attribute.Value);
htmlWriter.WriteAttributeName(attribute.Name);
htmlWriter.WriteAttributeValue(url);
}
else
htmlWriter.WriteAttribute(attribute);
}
}
else if (ctx.TagId == HtmlTagId.Body && !ctx.IsEndTag)
{
ctx.WriteTag(htmlWriter, false);
// add and/or replace oncontextmenu="return false;"
foreach (var attribute in ctx.Attributes)
{
if (attribute.Name.ToLowerInvariant() == "oncontextmenu")
continue;
htmlWriter.WriteAttribute(attribute);
}
htmlWriter.WriteAttribute("oncontextmenu", "return false;");
}
else
{
// pass the tag through to the output
ctx.WriteTag(htmlWriter, true);
}
}
void ReplaceUrlsWithFileNames (HtmlTagContext ctx, HtmlWriter htmlWriter)
{
if (ctx.TagId == HtmlTagId.Image) {
htmlWriter.WriteEmptyElementTag (ctx.TagName);
ctx.DeleteEndTag = true;
for (int i = 0; i < ctx.Attributes.Count; i++) {
var attr = ctx.Attributes[i];
if (attr.Id == HtmlAttributeId.Src) {
var fileName = Path.GetFileName (attr.Value);
htmlWriter.WriteAttributeName (attr.Name);
htmlWriter.WriteAttributeValue (fileName);
} else {
htmlWriter.WriteAttribute (attr);
}
}
} else {
ctx.WriteTag (htmlWriter, true);
}
}
void HtmlTagCallback (HtmlTagContext ctx, HtmlWriter htmlWriter)
{
if (ctx.TagId == HtmlTagId.Body && !ctx.IsEmptyElementTag) {
if (ctx.IsEndTag) {
// end our opening <blockquote>
htmlWriter.WriteEndTag (HtmlTagId.BlockQuote);
// pass the </body> tag through to the output
ctx.WriteTag (htmlWriter, true);
} else {
// pass the <body> tag through to the output
ctx.WriteTag (htmlWriter, true);
// prepend the HTML reply with "On {DATE}, {SENDER} wrote:"
htmlWriter.WriteStartTag (HtmlTagId.P);
htmlWriter.WriteText (GetOnDateSenderWrote (message));
htmlWriter.WriteEndTag (HtmlTagId.P);
// Wrap the original content in a <blockquote>
htmlWriter.WriteStartTag (HtmlTagId.BlockQuote);
htmlWriter.WriteAttribute (HtmlAttributeId.Style, "border-left: 1px #ccc solid; margin: 0 0 0 .8ex; padding-left: 1ex;");
ctx.InvokeCallbackForEndTag = true;
}
} else {
// pass the tag through to the output
ctx.WriteTag (htmlWriter, true);
}
}
