public int Exec(ref Guid pguidCmdGroup, uint nCmdID, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
{
// Command handling
if (pguidCmdGroup == Constants.HotCommandsGuid)
{
// Due to Async initialization, some Instances might be uninitialized and will return null.
// Safely catch the NullReferenceException and report a message to the status bar
try
{
// Dispatch to the correct command handler
switch (nCmdID)
{
case Constants.ToggleCommentCmdId:
return(ToggleComment.Instance.HandleCommand(textView, classifier, GetShellCommandDispatcher(), editorOperations));
case Constants.ExpandSelectionCmdId:
return(ExpandSelection.Instance.HandleCommand(textView, true));
case Constants.ShrinkSelectionCmdId:
return(ExpandSelection.Instance.HandleCommand(textView, false));
case Constants.FormatCodeCmdId:
return(FormatCode.Instance.HandleCommand(textView, GetShellCommandDispatcher()));
case Constants.DuplicateSelectionCmdId:
return(DuplicateSelection.HandleCommand(textView, classifier, GetShellCommandDispatcher(), editorOperations));
case Constants.DuplicateSelectionReverseCmdId:
return(DuplicateSelection.HandleCommand(textView, classifier, GetShellCommandDispatcher(), editorOperations, true));
case Constants.JoinLinesCmdId:
return(JoinLines.HandleCommand(textView, classifier, GetShellCommandDispatcher(), editorOperations));
case Constants.MoveMemberUpCmdId:
return(MoveMemberUp.Instance.HandleCommand(textView, GetShellCommandDispatcher(), editorOperations));
case Constants.MoveMemberDownCmdId:
return(MoveMemberDown.Instance.HandleCommand(textView, GetShellCommandDispatcher(), editorOperations));
case Constants.GoToPreviousMemberCmdId:
return(MoveCursorToAdjacentMember.MoveToPreviousMember(textView, editorOperations));
case Constants.GoToNextMemberCmdId:
return(MoveCursorToAdjacentMember.MoveToNextMember(textView, editorOperations));
}
// Clear the Status Bar text
StatusBarService.Clear();
}
catch (NullReferenceException)
{
// Most likely exception: System.NullReferenceException: 'Object reference not set to an instance of an object.'
// Resulting from the command being called before Async loading has taken place.
// Swallow the exception and hope it works the next time the user tries it.
// Print a message to the StatusBar
StatusBarService.SetText("HotCommands is still loading. Please try again soon.");
}
}
// No commands called. Pass to next command handler.
if (Next != null)
{
return(Next.Exec(ref pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut));
}
return((int)OLEConstants.OLECMDERR_E_UNKNOWNGROUP);
}