/// <summary>
/// Specifies whether this object can provide its extender properties to the specified object.
/// </summary>
/// <param name="extendee">The <see cref="T:System.Object" /> to receive the extender properties.</param>
/// <returns>true if this object can provide extender properties to the specified object; otherwise, false.</returns>
bool IExtenderProvider.CanExtend(object extendee)
{
//find ZeroitAutocompleteMenu with lowest hashcode
if (Container != null)
{
foreach (object comp in Container.Components)
{
if (comp is ZeroitAutocompleteMenu)
{
if (comp.GetHashCode() < GetHashCode())
{
return(false);
}
}
}
}
//we are main autocomplete menu on form ...
//check extendee as TextBox
if (!(extendee is Control))
{
return(false);
}
var temp = TextBoxWrapper.Create(extendee as Control);
return(temp != null);
}
/// <summary>
/// Handles the <see cref="E:WrapperNeeded" /> event.
/// </summary>
/// <param name="args">The <see cref="WrapperNeededEventArgs"/> instance containing the event data.</param>
protected void OnWrapperNeeded(WrapperNeededEventArgs args)
{
if (WrapperNeeded != null)
{
WrapperNeeded(this, args);
}
if (args.Wrapper == null)
{
args.Wrapper = TextBoxWrapper.Create(args.TargetControl);
}
}
/// <summary>
/// Creates the specified target control.
/// </summary>
/// <param name="targetControl">The target control.</param>
/// <returns>TextBoxWrapper.</returns>
public static TextBoxWrapper Create(Control targetControl)
{
var result = new TextBoxWrapper(targetControl);
if (result.selectedText == null || result.selectionLength == null || result.selectionStart == null ||
result.getPositionFromCharIndex == null)
{
return(null);
}
return(result);
}