private void _options_OnInsertHandler(int index, object value)
{
Interop.IHTMLElement selectElement = (Interop.IHTMLElement)base.GetBaseElement();
Interop.IHTMLDOMNode selNode = (Interop.IHTMLDOMNode)selectElement;
Interop.IHTMLDOMNode optGrpNode = null;
switch (value.GetType().Name)
{
case "OptionElement":
// add OPTION directly...
optGrpNode = selNode.appendChild((Interop.IHTMLDOMNode)((OptionElement)value).GetBaseElement());
// ...and handle InnerText separatly because this is not a real attribute
//((Interop.IHTMLElement) optGrpNode).SetInnerText(((OptionElement) value).text);
//optGrpNode.nodeValue = ((OptionElement) value).text;
break;
case "OptGroupElement":
// add OPTGROUP and the OPTION children the element already has
OptGroupElement optGrpObj = (OptGroupElement)value;
optGrpNode = selNode.appendChild((Interop.IHTMLDOMNode)(optGrpObj).GetBaseElement());
if (optGrpObj.Options != null && optGrpObj.Options.Count > 0)
{
foreach (OptionElement oe in optGrpObj.Options)
{
optGrpNode.appendChild((Interop.IHTMLDOMNode)oe.GetBaseElement());
}
}
break;
}
}
private void CreateOptionList(Interop.IHTMLSelectElement s)
{
if (_options == null)
{
_options = new OptionElementsCollection(s, base.HtmlEditor);
_options.OnInsertHandler += new CollectionInsertHandler(_options_OnInsertHandler);
_options.OnClearHandler += new CollectionClearHandler(_options_OnClearHandler);
}
else
{
Debug.WriteLine("Recreate List");
_options.OnInsertHandler -= new CollectionInsertHandler(_options_OnInsertHandler);
_options.OnClearHandler -= new CollectionClearHandler(_options_OnClearHandler);
_options.Clear();
Interop.IHTMLElement selectElement = (Interop.IHTMLElement)s;
Interop.IHTMLElementCollection options = (Interop.IHTMLElementCollection)selectElement.GetChildren();
for (int i = 0; i < options.GetLength(); i++)
{
Interop.IHTMLElement el = (Interop.IHTMLElement)options.Item(i, i);
IOptionElement oe = null;
switch (el.GetTagName())
{
case "OPTION":
oe = new OptionElement(el, base.HtmlEditor);
break;
case "OPTGROUP":
oe = new OptGroupElement(el, base.HtmlEditor);
break;
}
if (oe != null)
{
_options.Add(oe);
}
}
_options.OnInsertHandler += new CollectionInsertHandler(_options_OnInsertHandler);
_options.OnClearHandler += new CollectionClearHandler(_options_OnClearHandler);
}
}
internal OptionElementsCollection(Interop.IHTMLSelectElement s, IHtmlEditor editor) : base()
{
selectElement = (Interop.IHTMLElement)s;
Interop.IHTMLElementCollection options = (Interop.IHTMLElementCollection)selectElement.GetChildren();
for (int i = 0; i < options.GetLength(); i++)
{
Interop.IHTMLElement el = (Interop.IHTMLElement)options.Item(i, i);
object oe = null;
switch (el.GetTagName())
{
case "OPTION":
oe = new OptionElement(el, editor);
break;
case "OPTGROUP":
oe = new OptGroupElement(el, editor);
break;
}
if (oe != null)
{
InnerList.Add(oe);
}
}
}