// Populates content in a learning unit, which is like a folder but with a tree-like navigation
// and content is generally displayed in iframes to the right.
public void PopulateLearningUnit(BbContentDirectory folder)
{
string pageSource = http.DownloadString(folder.Url.AbsoluteUri);
// Get the link to the next content item in a learning unit by following the next arrow link
// until there are no more left.
Uri nextURL = folder.Url;
HtmlNode nextLink;
while (nextURL != null)
{
populateProgress.AppendStatus(".");
string contentSource = http.DownloadString(nextURL);
List <HtmlNode> contentLinks = HTMLParser.GetLearningUnitContent(contentSource);
// for each content link found, add a file. Usually only one
foreach (HtmlNode link in contentLinks)
{
Uri contentURL = new Uri(folder.Url, link.Attributes["href"].Value);
string linkType = HTMLParser.GetLinkType(contentURL);
string linkName = HTMLParser.GetLinkText(link);
if (linkName == "DefaultText")
{
linkName = HTMLParser.GetPageTitle(contentSource);
}
folder.AddFile(new BbContentItem(linkName, contentURL, folder, linkType));
}
if (contentLinks.Count == 0) // if no content links found, look for content source in iFrame
{
string iFrameLink = HTMLParser.GetLearningUnitIFrame(contentSource);
if (iFrameLink != null) // if iframe found
{
Uri contentURL = new Uri(folder.Url, iFrameLink);
string linkType = HTMLParser.GetLinkType(contentURL);
string linkName = HTMLParser.GetPageTitle(contentSource);
folder.AddFile(new BbContentItem(linkName, contentURL, folder, linkType));
}
}
nextLink = HTMLParser.GetNextLearningUnitContent(contentSource);
if (nextLink == null)
{
nextURL = null;
}
else
{
nextURL = new Uri(folder.Url, nextLink.Attributes["href"].Value);
}
}
}
// Used recursively to populate all subfolders of a module
public void PopulateContentDirectory(BbContentDirectory folder)
{
string pageSource = http.DownloadString(folder.Url.AbsoluteUri);
List <HtmlNode> contentLinks = HTMLParser.GetContentLinks(pageSource);
if (contentLinks == null)
{
return;
}
foreach (HtmlNode link in contentLinks)
{
//Console.WriteLine("Adding " + folder.Name + ": " + link.InnerText);
populateProgress.AppendStatus(".");
Uri linkURL = new Uri(folder.Url, link.Attributes["href"].Value);
if (HTMLParser.IsSubFolder(link)) // content is a subfolder
{
BbContentDirectory subFolder = new BbContentDirectory(link.InnerText, linkURL, folder);
if (!folder.SubFolders.Contains(subFolder))
{
folder.AddSubFolder(subFolder);
}
PopulateContentDirectory(subFolder);
}
else if (HTMLParser.IsLearningUnit(link)) //content is a learning unit
{
BbContentDirectory subFolder = new BbContentDirectory(link.InnerText, linkURL, folder);
if (!folder.SubFolders.Contains(subFolder))
{
folder.AddSubFolder(subFolder);
}
PopulateLearningUnit(subFolder);
}
else // content is a file
{
string linkType = HTMLParser.GetLinkType(linkURL);
BbContentItem newFile = new BbContentItem(link.InnerText, linkURL, folder, linkType);
if (!folder.Files.Contains(newFile))
{
folder.AddFile(newFile);
}
}
}
}
// Populates content in a learning unit, which is like a folder but with a tree-like navigation
// and content is generally displayed in iframes to the right.
public void PopulateLearningUnit(BbContentDirectory folder)
{
string pageSource = http.DownloadString(folder.Url.AbsoluteUri);
// Get the link to the next content item in a learning unit by following the next arrow link
// until there are no more left.
Uri nextURL = folder.Url;
HtmlNode nextLink;
while (nextURL != null)
{
populateProgress.AppendStatus(".");
string contentSource = http.DownloadString(nextURL);
List<HtmlNode> contentLinks = HTMLParser.GetLearningUnitContent(contentSource);
// for each content link found, add a file. Usually only one
foreach (HtmlNode link in contentLinks)
{
Uri contentURL = new Uri(folder.Url, link.Attributes["href"].Value);
string linkType = HTMLParser.GetLinkType(contentURL);
string linkName = HTMLParser.GetLinkText(link);
if (linkName == "DefaultText") { linkName = HTMLParser.GetPageTitle(contentSource); }
folder.AddFile(new BbContentItem(linkName, contentURL, folder, linkType));
}
if (contentLinks.Count == 0) // if no content links found, look for content source in iFrame
{
string iFrameLink = HTMLParser.GetLearningUnitIFrame(contentSource);
if (iFrameLink != null) // if iframe found
{
Uri contentURL = new Uri(folder.Url, iFrameLink);
string linkType = HTMLParser.GetLinkType(contentURL);
string linkName = HTMLParser.GetPageTitle(contentSource);
folder.AddFile(new BbContentItem(linkName, contentURL, folder, linkType));
}
}
nextLink = HTMLParser.GetNextLearningUnitContent(contentSource);
if (nextLink == null) { nextURL = null; }
else { nextURL = new Uri(folder.Url, nextLink.Attributes["href"].Value); }
}
}
// Used recursively to populate all subfolders of a module
public void PopulateContentDirectory(BbContentDirectory folder)
{
string pageSource = http.DownloadString(folder.Url.AbsoluteUri);
List<HtmlNode> contentLinks = HTMLParser.GetContentLinks(pageSource);
if (contentLinks == null) return;
foreach (HtmlNode link in contentLinks)
{
//Console.WriteLine("Adding " + folder.Name + ": " + link.InnerText);
populateProgress.AppendStatus(".");
Uri linkURL = new Uri(folder.Url, link.Attributes["href"].Value);
if (HTMLParser.IsSubFolder(link)) // content is a subfolder
{
BbContentDirectory subFolder = new BbContentDirectory(link.InnerText, linkURL, folder);
if (!folder.SubFolders.Contains(subFolder))
{
folder.AddSubFolder(subFolder);
}
PopulateContentDirectory(subFolder);
}
else if (HTMLParser.IsLearningUnit(link)) //content is a learning unit
{
BbContentDirectory subFolder = new BbContentDirectory(link.InnerText, linkURL, folder);
if (!folder.SubFolders.Contains(subFolder))
{
folder.AddSubFolder(subFolder);
}
PopulateLearningUnit(subFolder);
}
else // content is a file
{
string linkType = HTMLParser.GetLinkType(linkURL);
BbContentItem newFile = new BbContentItem(link.InnerText, linkURL, folder, linkType);
if (!folder.Files.Contains(newFile))
{
folder.AddFile(newFile);
}
}
}
}
