| public GetComponent ( string name ) : IComponent | ||
| name | string | |
| return | IComponent | |
public IComponent GetComponent(string name)
{
return(container.GetComponent(name));
}
///<summary>Converts a designer document fragment to ASP.NET code</summary>
public string Serialize(string designerDocumentFragment)
{
if (host == null)
{
throw new Exception("The document cannot be persisted without a host");
}
string serializedDoc = string.Empty;
StringWriter writer = new StringWriter();
//keep method argument meaningfully named, but keep code readable!
string frag = designerDocumentFragment;
int length = frag.Length;
int pos = 0;
SMode mode = SMode.Free;
while (pos < length)
{
char c = frag [pos];
switch (mode)
{
//it's freely copying to output, but watching for a directive or control placeholder
case SMode.Free:
if (c == '<')
{
if ((pos + 10 < length) && frag.Substring(pos + 1, 10) == "aspcontrol")
{
mode = SMode.ControlId;
pos += 10;
break;
}
else if ((pos + 20 < length) && frag.Substring(pos + 1, 20) == "directiveplaceholder")
{
mode = SMode.DirectiveId;
pos += 20;
break;
}
}
writer.Write(c);
break;
//it's found a directive placeholder and is scanning for the ID
case SMode.DirectiveId:
if (c == 'i' && (pos + 4 < length) && frag.Substring(pos, 4) == "id=\"")
{
int idEnd = frag.IndexOf('"', pos + 4 + 1);
if (idEnd == -1)
{
throw new Exception("Identifier was unterminated");
}
int id = Int32.Parse(frag.Substring(pos + 4, (idEnd - pos - 4)));
//TODO: more intelligent removal/copying of directives in case of fragments
//works fine with whole document.
string directive = RemoveDirective(id);
writer.Write(directive);
mode = SMode.DirectiveEnd;
pos = idEnd;
}
break;
//it's found a control placeholder and is scanning for the ID
case SMode.ControlId:
if (c == 'i' && (pos + 4 < length) && frag.Substring(pos, 4) == "id=\"")
{
int idEnd = frag.IndexOf("\"", pos + 4);
if (idEnd == -1)
{
throw new Exception("Identifier was unterminated");
}
string id = frag.Substring(pos + 4, (idEnd - pos - 4));
DesignContainer dc = (DesignContainer)host.Container;
Control control = dc.GetComponent(id) as Control;
if (control == null)
{
throw new Exception("Could not retrieve control " + id);
}
ControlPersister.PersistControl(writer, control);
mode = SMode.ControlEnd;
pos = idEnd;
}
break;
//it's found the control's ID and is looking for the end
case SMode.ControlEnd:
if (c == '<' && (pos + 13 < length) && frag.Substring(pos, 13) == "</aspcontrol>")
{
pos += 12;
mode = SMode.Free;
}
break;
//it's found the placeholder's ID and is looking for the end
case SMode.DirectiveEnd:
if (c == '/' && (pos + 2 < length) && frag.Substring(pos, 2) == "/>")
{
pos += 1;
mode = SMode.Free;
}
break;
}
pos++;
}
serializedDoc = writer.ToString();
writer.Close();
return(serializedDoc);
}
