/// <summary>
/// Adds a Snippet Control to this TemplateSlot.
/// </summary>
/// <param name="snippetInfo">The snippet info.</param>
public void AddSnippet(SnippetControl snippetControl)
{
TemplateSlotItem item = new TemplateSlotItem();
this.Controls.Add(item);
item.Controls.Add(snippetControl);
}
/// <summary>
/// Adds the snippet info from the PageAssembly instruction for each
/// page template slot. Use the ID of the template slot control to match
/// the snippet info slotname property.
/// </summary>
private void loadSnippetsIntoTemplateSlots()
{
if (TemplateSlots.Count > 0)
{
List <SnippetControl> supportingSnippets = new List <SnippetControl>();
foreach (SnippetInfo snippet in PageAssemblyInstruction.Snippets)
{
if (!String.IsNullOrEmpty(snippet.SlotName))
{
string slotName = snippet.SlotName.Trim();
if (TemplateSlots.ContainsSlotName(slotName))
{
try
{
SnippetControl snippetControl = (SnippetControl)Page.LoadControl(snippet.SnippetTemplatePath.Trim());
// Note this has to come before adding the template control to the control tree.
// This way, we can be sure any event in the control lifecycle like OnInit()
// already has the snippet info data.
snippetControl.SnippetInfo = snippet;
TemplateSlots[slotName].AddSnippet(snippetControl);
// Some snippetcontrol implement the ISupportingSnippet interface.
// The controls which implement ISupportingSnippet will provide additional
// snippet control that are required for the complete functionality.
// Add them to a collection that will be processed later.
if (snippetControl is ISupportingSnippet)
{
SnippetControl[] supportingcontrols = ((ISupportingSnippet)snippetControl).GetSupportingSnippets();
if (supportingcontrols != null)
{
supportingSnippets.AddRange(supportingcontrols);
}
}
}
catch (Exception ex)
{
//Failed to load the slot template control. Log this error.
log.ErrorFormat("Failed to load snippet control: {0}", ex, snippet.SnippetTemplatePath);
}
}
}
}
foreach (SnippetControl supportSnippet in supportingSnippets)
{
try
{
if (TemplateSlots.ContainsSlotName(supportSnippet.SnippetInfo.SlotName))
{
TemplateSlots[supportSnippet.SnippetInfo.SlotName].AddSnippet(supportSnippet);
}
}
catch (Exception ex)
{
log.Error("Failed to add supporting snippet control", ex);
}
}
}
}