public void PreviewMarkdown(MarkdownDocumentEditor editor = null, bool keepScrollPosition = false, bool showInBrowser = false)
{
// only render if the preview is actually visible and rendering in Preview Browser
if (!Model.IsPreviewBrowserVisible && !showInBrowser)
{
return;
}
if (editor == null)
{
editor = GetActiveMarkdownEditor();
}
if (editor == null)
{
return;
}
var doc = editor.MarkdownDocument;
var ext = Path.GetExtension(doc.Filename).ToLower().Replace(".", "");
string renderedHtml = null;
if (string.IsNullOrEmpty(ext) || ext == "md" || ext == "html" || ext == "htm")
{
dynamic dom = null;
if (keepScrollPosition)
{
dom = PreviewBrowser.Document;
editor.MarkdownDocument.LastBrowserScrollPosition = dom.documentElement.scrollTop;
}
else
{
ShowPreviewBrowser(false, false);
editor.MarkdownDocument.LastBrowserScrollPosition = 0;
}
if (ext == "html" || ext == "htm")
{
editor.MarkdownDocument.WriteFile(editor.MarkdownDocument.HtmlRenderFilename, editor.MarkdownDocument.CurrentText);
}
else
{
renderedHtml = editor.MarkdownDocument.RenderHtmlToFile();
}
if (showInBrowser)
{
ShellUtils.GoUrl(editor.MarkdownDocument.HtmlRenderFilename);
}
else
{
PreviewBrowser.Cursor = Cursors.None;
PreviewBrowser.ForceCursor = true;
if (keepScrollPosition)
{
string browserUrl = PreviewBrowser.Source.ToString().ToLower();
string documentFile = "file:///" + editor.MarkdownDocument.HtmlRenderFilename.Replace('\\', '/').ToLower();
if (browserUrl == documentFile)
{
dom = PreviewBrowser.Document;
//var content = dom.getElementById("MainContent");
renderedHtml = StringUtils.ExtractString(renderedHtml,
"<!-- Markdown Monster Content -->",
"<!-- End Markdown Monster Content -->");
if (string.IsNullOrEmpty(renderedHtml))
{
PreviewMarkdown(editor, false, false); // fully reload document
}
else
{
try
{
// explicitly update the document with JavaScript code
// much more efficient and non-jumpy and no wait cursor
var window = dom.parentWindow;
window.updateDocumentContent(renderedHtml);
}
catch
{
PreviewBrowser.Refresh(true);
}
}
return;
}
}
PreviewBrowser.Navigate(editor.MarkdownDocument.HtmlRenderFilename);
return;
}
}
ShowPreviewBrowser(true, keepScrollPosition);
}
public void PreviewMarkdown(MarkdownDocumentEditor editor = null, bool keepScrollPosition = false, bool showInBrowser = false)
{
if (!Model.IsPreviewBrowserVisible && !showInBrowser)
{
return;
}
if (editor == null)
{
editor = GetActiveMarkdownEditor();
}
if (editor == null)
{
return;
}
var doc = editor.MarkdownDocument;
var ext = Path.GetExtension(editor.MarkdownDocument.Filename).ToLower().Replace(".", "");
int lastPos = 0;
dynamic dom = null;
if (string.IsNullOrEmpty(ext) || ext == "md" || ext == "html" || ext == "htm")
{
this.ShowPreviewBrowser();
if (keepScrollPosition)
{
dom = PreviewBrowser.Document;
editor.MarkdownDocument.LastBrowserScrollPosition = dom.documentElement.scrollTop;
}
else
{
editor.MarkdownDocument.LastBrowserScrollPosition = 0;
}
if (ext == "html" || ext == "htm")
{
File.WriteAllText(editor.MarkdownDocument.HtmlRenderFilename, editor.MarkdownDocument.CurrentText);
}
else
{
editor.MarkdownDocument.RenderHtmlToFile();
}
if (showInBrowser)
{
ShellUtils.GoUrl(editor.MarkdownDocument.HtmlRenderFilename);
}
else
{
PreviewBrowser.Cursor = Cursors.None;
PreviewBrowser.ForceCursor = true;
if (keepScrollPosition &&
PreviewBrowser.Source.ToString() == editor.MarkdownDocument.HtmlRenderFilename)
{
PreviewBrowser.Refresh(true);
}
else
{
PreviewBrowser.Navigate(editor.MarkdownDocument.HtmlRenderFilename);
}
}
}
else
{
ShowPreviewBrowser(true);
}
}
public void Refresh(bool noCache = false)
{
PreviewBrowser.Refresh(noCache);
PreviewMarkdownAsync();
}