async void RenderMultipartRelated(IMailFolder folder, UniqueId uid, BodyPartMultipart bodyPart)
{
// download the entire multipart/related for simplicity since we'll probably end up needing all of the image attachments anyway...
var related = await folder.GetBodyPartAsync(uid, bodyPart) as MultipartRelated;
RenderMultipartRelated(related);
}
async void RenderText(IMailFolder folder, UniqueId uid, BodyPartText bodyPart)
{
var entity = await folder.GetBodyPartAsync(uid, bodyPart);
RenderText((TextPart)entity);
}
public async Task <string> RenderMultipartRelatedAsync(IMailFolder folder, UniqueId uid, BodyPartMultipart bodyPart)
{
var related = await folder.GetBodyPartAsync(uid, bodyPart) as MultipartRelated;
return(RenderMultipartRelated(related));
}
async void RenderRelated (IMailFolder folder, UniqueId uid, BodyPartMultipart related)
{
var start = related.ContentType.Parameters["start"];
BodyPartText root = null;
if (!string.IsNullOrEmpty (start)) {
// if the 'start' parameter is set, it overrides the default behavior of using the first
// body part as the main document.
root = related.BodyParts.OfType<BodyPartText> ().FirstOrDefault (x => x.ContentId == start);
} else if (related.BodyParts.Count > 0) {
// this will generally either be a text/html part (which is what we are looking for) or a multipart/alternative
var multipart = related.BodyParts[0] as BodyPartMultipart;
if (multipart != null) {
if (multipart.ContentType.Matches ("multipart", "alternative") && multipart.BodyParts.Count > 0) {
// find the last text/html part (which will be the closest to what the sender saw in their WYSIWYG editor)
// or, failing that, the last text part.
for (int i = multipart.BodyParts.Count; i > 0; i--) {
var bodyPart = multipart.BodyParts[i - 1] as BodyPartText;
if (bodyPart == null)
continue;
if (bodyPart.ContentType.Matches ("text", "html")) {
root = bodyPart;
break;
}
if (root == null)
root = bodyPart;
}
}
} else {
root = related.BodyParts[0] as BodyPartText;
}
}
if (root == null)
return;
var text = await folder.GetBodyPartAsync (uid, root) as TextPart;
if (text != null && text.ContentType.Matches ("text", "html")) {
var doc = new HtmlAgilityPack.HtmlDocument ();
var saved = new Dictionary<MimePart, string> ();
TextPart html;
doc.LoadHtml (text.Text);
// find references to related MIME parts and replace them with links to links to the saved attachments
foreach (var img in doc.DocumentNode.SelectNodes ("//img[@src]")) {
var src = img.Attributes["src"];
int index;
Uri uri;
if (src == null || src.Value == null)
continue;
// parse the <img src=...> attribute value into a Uri
if (Uri.IsWellFormedUriString (src.Value, UriKind.Absolute))
uri = new Uri (src.Value, UriKind.Absolute);
else
uri = new Uri (src.Value, UriKind.Relative);
// locate the index of the attachment within the multipart/related (if it exists)
if ((index = related.BodyParts.IndexOf (uri)) != -1) {
var bodyPart = related.BodyParts[index] as BodyPartBasic;
if (bodyPart == null) {
// the body part is not a basic leaf part (IOW it's a multipart or message-part)
continue;
}
var attachment = await folder.GetBodyPartAsync (uid, bodyPart) as MimePart;
// make sure the referenced part is a MimePart (as opposed to another Multipart or MessagePart)
if (attachment == null)
continue;
string fileName;
// save the attachment (if we haven't already saved it)
if (!saved.TryGetValue (attachment, out fileName)) {
fileName = attachment.FileName;
if (string.IsNullOrEmpty (fileName))
fileName = Guid.NewGuid ().ToString ();
if (!Directory.Exists (uid.ToString ()))
Directory.CreateDirectory (uid.ToString ());
fileName = Path.Combine (uid.ToString (), fileName);
using (var stream = File.Create (fileName))
attachment.ContentObject.DecodeTo (stream);
saved.Add (attachment, fileName);
}
// replace the <img src=...> value with the local file name
src.Value = "file://" + Path.GetFullPath (fileName);
}
}
if (saved.Count > 0) {
// we had to make some modifications to the original html part, so create a new
// (temporary) text/html part to render
html = new TextPart ("html");
using (var writer = new StringWriter ()) {
doc.Save (writer);
html.Text = writer.GetStringBuilder ().ToString ();
}
} else {
html = text;
}
RenderText (html);
} else if (text != null) {
RenderText (text);
}
}
async Task <string> RenderTextAsync(IMailFolder folder, UniqueId uid, BodyPartText bodyPart)
{
var entity = await folder.GetBodyPartAsync(uid, bodyPart);
return(RenderText((TextPart)entity));
}
async void RenderText (IMailFolder folder, UniqueId uid, BodyPartText bodyPart)
{
var entity = await folder.GetBodyPartAsync (uid, bodyPart);
RenderText ((TextPart) entity);
}
async void RenderMultipartRelated (IMailFolder folder, UniqueId uid, BodyPartMultipart bodyPart)
{
// download the entire multipart/related for simplicity since we'll probably end up needing all of the image attachments anyway...
var related = await folder.GetBodyPartAsync (uid, bodyPart) as MultipartRelated;
RenderMultipartRelated (related);
}
async void RenderRelated(IMailFolder folder, UniqueId uid, BodyPartMultipart related)
{
var start = related.ContentType.Parameters["start"];
BodyPartText root = null;
if (!string.IsNullOrEmpty(start))
{
// if the 'start' parameter is set, it overrides the default behavior of using the first
// body part as the main document.
root = related.BodyParts.OfType <BodyPartText> ().FirstOrDefault(x => x.ContentId == start);
}
else if (related.BodyParts.Count > 0)
{
// this will generally either be a text/html part (which is what we are looking for) or a multipart/alternative
var multipart = related.BodyParts[0] as BodyPartMultipart;
if (multipart != null)
{
if (multipart.ContentType.Matches("multipart", "alternative") && multipart.BodyParts.Count > 0)
{
// find the last text/html part (which will be the closest to what the sender saw in their WYSIWYG editor)
// or, failing that, the last text part.
for (int i = multipart.BodyParts.Count; i > 0; i--)
{
var bodyPart = multipart.BodyParts[i - 1] as BodyPartText;
if (bodyPart == null)
{
continue;
}
if (bodyPart.ContentType.Matches("text", "html"))
{
root = bodyPart;
break;
}
if (root == null)
{
root = bodyPart;
}
}
}
}
else
{
root = related.BodyParts[0] as BodyPartText;
}
}
if (root == null)
{
return;
}
var text = await folder.GetBodyPartAsync(uid, root) as TextPart;
if (text != null && text.ContentType.Matches("text", "html"))
{
var doc = new HtmlAgilityPack.HtmlDocument();
var saved = new Dictionary <MimePart, string> ();
TextPart html;
doc.LoadHtml(text.Text);
// find references to related MIME parts and replace them with links to links to the saved attachments
foreach (var img in doc.DocumentNode.SelectNodes("//img[@src]"))
{
var src = img.Attributes["src"];
int index;
Uri uri;
if (src == null || src.Value == null)
{
continue;
}
// parse the <img src=...> attribute value into a Uri
if (Uri.IsWellFormedUriString(src.Value, UriKind.Absolute))
{
uri = new Uri(src.Value, UriKind.Absolute);
}
else
{
uri = new Uri(src.Value, UriKind.Relative);
}
// locate the index of the attachment within the multipart/related (if it exists)
if ((index = related.BodyParts.IndexOf(uri)) != -1)
{
var bodyPart = related.BodyParts[index] as BodyPartBasic;
if (bodyPart == null)
{
// the body part is not a basic leaf part (IOW it's a multipart or message-part)
continue;
}
var attachment = await folder.GetBodyPartAsync(uid, bodyPart) as MimePart;
// make sure the referenced part is a MimePart (as opposed to another Multipart or MessagePart)
if (attachment == null)
{
continue;
}
string fileName;
// save the attachment (if we haven't already saved it)
if (!saved.TryGetValue(attachment, out fileName))
{
fileName = attachment.FileName;
if (string.IsNullOrEmpty(fileName))
{
fileName = Guid.NewGuid().ToString();
}
if (!Directory.Exists(uid.ToString()))
{
Directory.CreateDirectory(uid.ToString());
}
fileName = Path.Combine(uid.ToString(), fileName);
using (var stream = File.Create(fileName))
attachment.ContentObject.DecodeTo(stream);
saved.Add(attachment, fileName);
}
// replace the <img src=...> value with the local file name
src.Value = "file://" + Path.GetFullPath(fileName);
}
}
if (saved.Count > 0)
{
// we had to make some modifications to the original html part, so create a new
// (temporary) text/html part to render
html = new TextPart("html");
using (var writer = new StringWriter()) {
doc.Save(writer);
html.Text = writer.GetStringBuilder().ToString();
}
}
else
{
html = text;
}
RenderText(html);
}
else if (text != null)
{
RenderText(text);
}
}
public static async void RenderMultipartRelated(IMailFolder folder, UniqueId uid, BodyPartMultipart bodyPart, WebBrowserEditabil pWebBrowser)
{
var related = await folder.GetBodyPartAsync(uid, bodyPart) as MultipartRelated;
RenderMultipartRelated(related, pWebBrowser);
}
private static async void RenderText(IMailFolder folder, UniqueId uid, BodyPartText bodyPart, WebBrowserEditabil pWebBrowser)
{
var entity = await folder.GetBodyPartAsync(uid, bodyPart);
RenderText((TextPart)entity, pWebBrowser);
}