public override void Activate(object host)
{
AspNetEdit.Editor.ComponentModel.DesignerHost deshost =
host as AspNetEdit.Editor.ComponentModel.DesignerHost;
if (deshost != null)
{
deshost.RootDocument.InsertFragment(Text);
}
else
{
throw new NotImplementedException("We need an interface to insert text into documents in other hosts");
}
}
//Runs when item is clicked.
//We should be able to avoid loading actual ToolboxItem instances and their
//associated assemblies until they are activated.
public override void Activate(object host)
{
IDesignerHost desHost = host as IDesignerHost;
if (desHost == null)
{
throw new Exception("This ToolboxItem should not have been shown for this host. System.Drawing.Design.ToolboxItem requires a host of type System.ComponentModel.Design.IDesignerHost");
}
//web controls have sample HTML that need to be deserialised
//TODO: Fix WebControlToolboxItem so we don't have to mess around with type lookups and attributes here
if ((item is System.Web.UI.Design.WebControlToolboxItem) && host is AspNetEdit.Editor.ComponentModel.DesignerHost)
{
AspNetEdit.Editor.ComponentModel.DesignerHost aspDesHost = (AspNetEdit.Editor.ComponentModel.DesignerHost)desHost;
if (item.AssemblyName != null && item.TypeName != null)
{
//look up and register the type
ITypeResolutionService typeRes = (ITypeResolutionService)aspDesHost.GetService(typeof(ITypeResolutionService));
typeRes.ReferenceAssembly(item.AssemblyName);
Type controlType = typeRes.GetType(item.TypeName, true);
//read the WebControlToolboxItem data from the attribute
AttributeCollection atts = TypeDescriptor.GetAttributes(controlType);
System.Web.UI.ToolboxDataAttribute tda = (System.Web.UI.ToolboxDataAttribute)atts[typeof(System.Web.UI.ToolboxDataAttribute)];
//if it's present
if (tda != null && tda.Data.Length > 0)
{
//look up the tag's prefix and insert it into the data
System.Web.UI.Design.IWebFormReferenceManager webRef = aspDesHost.GetService(typeof(System.Web.UI.Design.IWebFormReferenceManager)) as System.Web.UI.Design.IWebFormReferenceManager;
if (webRef == null)
{
throw new Exception("Host does not provide an IWebFormReferenceManager");
}
string aspText = String.Format(tda.Data, webRef.GetTagPrefix(controlType));
System.Diagnostics.Trace.WriteLine("Toolbox processing ASP.NET item data: " + aspText);
//and add it to the document
aspDesHost.RootDocument.DeserializeAndAdd(aspText);
return;
}
}
}
//No ToolboxDataAttribute? Get the ToolboxItem to create the components itself
item.CreateComponents(desHost);
}
