public int Close(IOleParentUndoUnit pPUU, int fCommit)
{
if (pPUU == null)
{
return(VSConstants.S_FALSE);
}
if (_openParent == null)
{
return(VSConstants.S_FALSE);
}
var hr = _openParent.Close(pPUU, fCommit);
if (VSErrorHandler.Failed(hr))
{
return(hr);
}
if (_openParent == pPUU)
{
_openParent = null;
if (fCommit != 0)
{
_children.Add(pPUU);
}
return(VSConstants.S_OK);
}
else
{
throw new ArgumentException("Closing the wrong parent unit!");
}
}
private void LoadEDMPackage()
{
var vsShell = (IVsShell)GetService(typeof(SVsShell));
Debug.Assert(vsShell != null, "unexpected null value for vsShell");
IVsPackage package = null;
if (vsShell != null)
{
var packageGuid = guidEscherPkg;
vsShell.IsPackageLoaded(ref packageGuid, out package);
if (package == null)
{
var hr = vsShell.LoadPackage(ref packageGuid, out package);
if (VSErrorHandler.Failed(hr))
{
var msg = String.Format(CultureInfo.CurrentCulture, Resources.PackageLoadFailureExceptionMessage, hr);
throw new InvalidOperationException(msg);
}
}
}
}
public override int GetInitialExtent(out int line, out int startIdx, out int endIdx)
{
int returnCode = base.GetInitialExtent(out line, out startIdx, out endIdx);
if (ErrorHandler.Failed(returnCode) || (view == null))
{
return(returnCode);
}
TextSpan secondary = new TextSpan();
secondary.iStartLine = secondary.iEndLine = line;
secondary.iStartIndex = startIdx;
secondary.iEndIndex = endIdx;
TextSpan primary = view.GetPrimarySpan(secondary);
line = primary.iStartLine;
startIdx = primary.iStartIndex;
endIdx = primary.iEndIndex;
return(returnCode);
}