/// <include file='doc\EditArray.uex' path='docs/doc[@for="EditSpan.EditSpan"]/*' />
/// <summary>
/// Construct a new edit span object
/// </summary>
/// <param name="toReplace">The text span to remove from the buffer (can be empty)</param>
/// <param name="insertText">The text to insert in it's place (can be null)</param>
public EditSpan(TextSpan toReplace, string insertText)
{
if (!TextSpanHelper.IsPositive(toReplace))
{
TextSpanHelper.MakePositive(ref toReplace);
}
this.span = toReplace;
this.text = insertText;
this.lineCount = -1;
}
/// <include file='doc\Source.uex' path='docs/doc[@for="ViewFilter.GetSelection"]/*' />
/// <summary>Returns the current selection, adjusted to become a positive text span</summary>
public TextSpan GetSelection()
{
//get text range
TextSpan[] aspan = new TextSpan[1];
NativeMethods.ThrowOnFailure(this.textView.GetSelectionSpan(aspan));
if (!TextSpanHelper.IsPositive(aspan[0]))
{
TextSpanHelper.MakePositive(ref aspan[0]);
}
return(aspan[0]);
}
// This method simulates what VS does in debug mode so that we can catch the
// errors in managed code before they go to the native debug assert.
public static bool ValidSpan(Source src, TextSpan span)
{
if (!ValidCoord(src, span.iStartLine, span.iStartIndex))
{
return(false);
}
if (!ValidCoord(src, span.iEndLine, span.iEndIndex))
{
return(false);
}
// end must be >= start
if (!TextSpanHelper.IsPositive(span))
{
return(false);
}
return(true);
}