/// <summary>
/// Walks the current contents to find smart content areas. When one is found, it calls the operation on the smart content. The operation has a chance
/// to return new content. If the content is non-null it will replace the current content.
/// </summary>
/// <param name="contents">the raw HTML string whose structured blocks will be replaced.</param>
/// <param name="operation">Delegate for generating replacement content.</param>
/// <param name="editMode">If true, then the element's stylename will be activated for editing</param>
/// <param name="continueOnError">
/// true - if the plugin throws an exception, it keeps crawling the DOM
/// false - if a plugin throws an exception, it stops processing the DOM and return empty string
/// null - if a plugin throws an exception, this function will rethrow it
/// </param
/// <returns>the contents with structured blocks replaced.</returns>
internal static string PerformOperation(string contents, SmartContentOperation operation, bool editMode, IContentSourceSidebarContext sourceContext, bool? continueOnError)
{
//replace all structured content blocks with their editor HTML
//string html = PostBodyPreprocessor.Preprocess(contents);
StringBuilder sb = new StringBuilder();
SimpleHtmlParser parser = new SimpleHtmlParser(contents);
for (Element e = parser.Next(); e != null; e = parser.Next())
{
if (e is BeginTag)
{
BeginTag beginTag = (BeginTag)e;
string elementClassName = beginTag.GetAttributeValue("class");
if (ContentSourceManager.IsSmartContentClass(elementClassName))
{
ISmartContent sContent = null;
try
{
string contentSourceId, contentItemId;
string blockId = beginTag.GetAttributeValue("id");
if (blockId != null)
{
ContentSourceManager.ParseContainingElementId(blockId, out contentSourceId, out contentItemId);
ContentSourceInfo contentSource = sourceContext.FindContentSource(contentSourceId);
if (contentSource != null && contentSource.Instance is SmartContentSource)
{
SmartContentSource sSource = (SmartContentSource)contentSource.Instance;
sContent = sourceContext.FindSmartContent(contentItemId);
if (sContent != null)
{
//write the div with the appropriate className
string newClassName = editMode ? ContentSourceManager.EDITABLE_SMART_CONTENT : ContentSourceManager.SMART_CONTENT;
beginTag.GetAttribute("class").Value = newClassName;
//replace the inner HTML of the div with the source's editor HTML
string content = parser.CollectHtmlUntil("div");
sb.Append(e.ToString());
operation(sourceContext, sSource, sContent, ref content);
sb.Append(content);
sb.Append("</div>");
continue;
}
}
}
}
catch (Exception ex)
{
Trace.WriteLine(String.Format(CultureInfo.InvariantCulture, "Error loading smart content item\r\n{0}", ex));
sContent = null;
if (continueOnError == null)
throw;
if (!continueOnError.Value)
return String.Empty;
}
if (sContent == null)
{
//this element references an unknown smart content, so it should not be editable
Attr classAttr = beginTag.GetAttribute("class");
classAttr.Value = ContentSourceManager.SMART_CONTENT;
}
}
}
sb.Append(e.ToString());
}
return sb.ToString();
}
/// <summary>
/// Walks the current contents to find smart content areas. When one is found, it calls the operation on the smart content. The operation has a chance
/// to return new content. If the content is non-null it will replace the current content.
/// </summary>
/// <param name="contents">the raw HTML string whose structured blocks will be replaced.</param>
/// <param name="operation">Delegate for generating replacement content.</param>
/// <param name="editMode">If true, then the element's stylename will be activated for editing</param>
/// <param name="continueOnError">
/// true - if the plugin throws an exception, it keeps crawling the DOM
/// false - if a plugin throws an exception, it stops processing the DOM and return empty string
/// null - if a plugin throws an exception, this function will rethrow it
/// </param
/// <returns>the contents with structured blocks replaced.</returns>
internal static string PerformOperation(string contents, SmartContentOperation operation, bool editMode, IContentSourceSidebarContext sourceContext, bool?continueOnError)
{
//replace all structured content blocks with their editor HTML
//string html = PostBodyPreprocessor.Preprocess(contents);
StringBuilder sb = new StringBuilder();
SimpleHtmlParser parser = new SimpleHtmlParser(contents);
for (Element e = parser.Next(); e != null; e = parser.Next())
{
if (e is BeginTag)
{
BeginTag beginTag = (BeginTag)e;
string elementClassName = beginTag.GetAttributeValue("class");
if (ContentSourceManager.IsSmartContentClass(elementClassName))
{
ISmartContent sContent = null;
try
{
string contentSourceId, contentItemId;
string blockId = beginTag.GetAttributeValue("id");
if (blockId != null)
{
ContentSourceManager.ParseContainingElementId(blockId, out contentSourceId, out contentItemId);
ContentSourceInfo contentSource = sourceContext.FindContentSource(contentSourceId);
if (contentSource != null && contentSource.Instance is SmartContentSource)
{
SmartContentSource sSource = (SmartContentSource)contentSource.Instance;
sContent = sourceContext.FindSmartContent(contentItemId);
if (sContent != null)
{
//write the div with the appropriate className
string newClassName = editMode ? ContentSourceManager.EDITABLE_SMART_CONTENT : ContentSourceManager.SMART_CONTENT;
beginTag.GetAttribute("class").Value = newClassName;
//replace the inner HTML of the div with the source's editor HTML
string content = parser.CollectHtmlUntil("div");
sb.Append(e.ToString());
operation(sourceContext, sSource, sContent, ref content);
sb.Append(content);
sb.Append("</div>");
continue;
}
}
}
}
catch (Exception ex)
{
Trace.WriteLine(String.Format(CultureInfo.InvariantCulture, "Error loading smart content item\r\n{0}", ex));
sContent = null;
if (continueOnError == null)
{
throw;
}
if (!continueOnError.Value)
{
return(String.Empty);
}
}
if (sContent == null)
{
//this element references an unknown smart content, so it should not be editable
Attr classAttr = beginTag.GetAttribute("class");
classAttr.Value = ContentSourceManager.SMART_CONTENT;
}
}
}
sb.Append(e.ToString());
}
return(sb.ToString());
}
