bool ITextRangeProvider.Compare(ITextRangeProvider range)
{
// TextPatternRange already verifies the other range comes from the same element before forwarding so we only need to worry about
// whether the endpoints are identical.
WindowsEditBoxRange editRange = (WindowsEditBoxRange)range;
return(editRange.Start == Start && editRange.End == End);
}
int ITextRangeProvider.CompareEndpoints(TextPatternRangeEndpoint endpoint, ITextRangeProvider targetRange, TextPatternRangeEndpoint targetEndpoint)
{
// TextPatternRange already verifies the other range comes from the same element before forwarding so we only need to worry about
// comparing the endpoints.
WindowsEditBoxRange editRange = (WindowsEditBoxRange)targetRange;
int e1 = (endpoint == TextPatternRangeEndpoint.Start) ? Start : End;
int e2 = (targetEndpoint == TextPatternRangeEndpoint.Start) ? editRange.Start : editRange.End;
return(e1 - e2);
}
void ITextRangeProvider.MoveEndpointByRange(TextPatternRangeEndpoint endpoint, ITextRangeProvider targetRange, TextPatternRangeEndpoint targetEndpoint)
{
Misc.SetFocus(_provider._hwnd);
// TextPatternRange already verifies the other range comes from the same element before forwarding so we only need to worry
// about the endpoints.
WindowsEditBoxRange editRange = (WindowsEditBoxRange)targetRange;
int e = (targetEndpoint == TextPatternRangeEndpoint.Start) ? editRange.Start : editRange.End;
if (endpoint == TextPatternRangeEndpoint.Start)
{
Start = e;
}
else
{
End = e;
}
}