protected override OLECMDF QueryCommandStatus(ref Guid commandGroup, uint commandId, OleCommandText oleCommandText)
{
if (commandGroup == typeof(GitDiffMarginCommand).GUID)
{
switch ((GitDiffMarginCommand)commandId)
{
case GitDiffMarginCommand.ShowPopup:
{
EditorDiffMarginViewModel viewModel;
if (!TryGetMarginViewModel(out viewModel))
{
return(0);
}
var diffViewModel = GetCurrentDiffViewModel(viewModel);
if (diffViewModel != null)
{
return(OLECMDF.OLECMDF_SUPPORTED | OLECMDF.OLECMDF_ENABLED);
}
else
{
return(OLECMDF.OLECMDF_SUPPORTED);
}
}
case GitDiffMarginCommand.PreviousChange:
case GitDiffMarginCommand.NextChange:
{
EditorDiffMarginViewModel viewModel;
if (!TryGetMarginViewModel(out viewModel))
{
return(0);
}
// First look for a diff already showing a popup
EditorDiffViewModel diffViewModel = viewModel.DiffViewModels.OfType <EditorDiffViewModel>().FirstOrDefault(i => i.ShowPopup);
if (diffViewModel != null)
{
RelayCommand <DiffViewModel> command = (GitDiffMarginCommand)commandId == GitDiffMarginCommand.NextChange ? viewModel.NextChangeCommand : viewModel.PreviousChangeCommand;
if (command.CanExecute(diffViewModel))
{
return(OLECMDF.OLECMDF_SUPPORTED | OLECMDF.OLECMDF_ENABLED);
}
else
{
return(OLECMDF.OLECMDF_SUPPORTED);
}
}
diffViewModel = GetDiffViewModelToMoveTo(commandId, viewModel);
if (diffViewModel != null)
{
return(OLECMDF.OLECMDF_SUPPORTED | OLECMDF.OLECMDF_ENABLED);
}
else
{
return(OLECMDF.OLECMDF_SUPPORTED);
}
}
case GitDiffMarginCommand.RollbackChange:
case GitDiffMarginCommand.CopyOldText:
{
EditorDiffMarginViewModel viewModel;
if (!TryGetMarginViewModel(out viewModel))
{
return(0);
}
EditorDiffViewModel diffViewModel = viewModel.DiffViewModels.OfType <EditorDiffViewModel>().FirstOrDefault(i => i.ShowPopup);
if (diffViewModel != null)
{
ICommand command = (GitDiffMarginCommand)commandId == GitDiffMarginCommand.RollbackChange ? diffViewModel.RollbackCommand : diffViewModel.CopyOldTextCommand;
if (command.CanExecute(diffViewModel))
{
return(OLECMDF.OLECMDF_SUPPORTED | OLECMDF.OLECMDF_ENABLED);
}
}
// This command only works when a popup is open
return(OLECMDF.OLECMDF_SUPPORTED);
}
case GitDiffMarginCommand.ShowDiff:
{
EditorDiffMarginViewModel viewModel;
if (!TryGetMarginViewModel(out viewModel))
{
return(0);
}
if (viewModel.DiffViewModels.Any())
{
return(OLECMDF.OLECMDF_SUPPORTED | OLECMDF.OLECMDF_ENABLED);
}
else
{
return(OLECMDF.OLECMDF_SUPPORTED);
}
}
case GitDiffMarginCommand.GitDiffToolbar:
case GitDiffMarginCommand.GitDiffToolbarGroup:
// these aren't actually commands, but IDs of the command bars and groups
break;
default:
break;
}
}
return(0);
}
protected override bool HandlePreExec(ref Guid commandGroup, uint commandId, OLECMDEXECOPT executionOptions, IntPtr pvaIn, IntPtr pvaOut)
{
if (commandGroup == typeof(GitDiffMarginCommand).GUID)
{
EditorDiffMarginViewModel viewModel = null;
EditorDiffViewModel diffViewModel = null;
if (TryGetMarginViewModel(out viewModel))
{
diffViewModel = viewModel.DiffViewModels.OfType <EditorDiffViewModel>().FirstOrDefault(i => i.ShowPopup);
}
switch ((GitDiffMarginCommand)commandId)
{
case GitDiffMarginCommand.ShowPopup:
{
diffViewModel = GetCurrentDiffViewModel(viewModel);
if (diffViewModel != null)
{
diffViewModel.ShowPopup = true;
return(true);
}
return(false);
}
case GitDiffMarginCommand.PreviousChange:
case GitDiffMarginCommand.NextChange:
{
if (viewModel == null)
{
return(false);
}
RelayCommand <DiffViewModel> command = (GitDiffMarginCommand)commandId == GitDiffMarginCommand.NextChange ? viewModel.NextChangeCommand : viewModel.PreviousChangeCommand;
// First look for a diff already showing a popup
if (diffViewModel != null)
{
command.Execute(diffViewModel);
return(true);
}
diffViewModel = GetDiffViewModelToMoveTo(commandId, viewModel);
if (diffViewModel == null)
{
return(false);
}
viewModel.MoveToChange(diffViewModel, 0);
return(true);
}
case GitDiffMarginCommand.RollbackChange:
case GitDiffMarginCommand.CopyOldText:
{
if (diffViewModel == null)
{
return(false);
}
ICommand command = (GitDiffMarginCommand)commandId == GitDiffMarginCommand.RollbackChange ? diffViewModel.RollbackCommand : diffViewModel.CopyOldTextCommand;
command.Execute(diffViewModel);
return(true);
}
case GitDiffMarginCommand.ShowDiff:
{
if (diffViewModel == null)
{
return(false);
}
ICommand command = diffViewModel.ShowDifferenceCommand;
command.Execute(diffViewModel);
return(true);
}
case GitDiffMarginCommand.GitDiffToolbar:
case GitDiffMarginCommand.GitDiffToolbarGroup:
// these aren't actually commands, but IDs of the command bars and groups
break;
default:
break;
}
}
return(false);
}
