private void ExecuteCommand(ITextView textView, ITextBuffer subjectBuffer, Action nextHandler)
{
var document = subjectBuffer.CurrentSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document == null)
{
nextHandler();
return;
}
// TODO: reuse GetCommandState instead
var workspace = document.Project.Solution.Workspace;
if (!workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
{
nextHandler();
return;
}
var supportsFeatureService = document.Project.Solution.Workspace.Services.GetService <IDocumentSupportsFeatureService>();
if (!supportsFeatureService.SupportsRefactorings(document))
{
nextHandler();
return;
}
var caretPoint = textView.GetCaretPoint(subjectBuffer);
if (!caretPoint.HasValue)
{
nextHandler();
return;
}
ChangeSignatureResult result = null;
var waitResult = _waitIndicator.Wait(
FeaturesResources.Change_signature,
allowCancel: true,
action: w =>
{
var reorderParametersService = document.GetLanguageService <AbstractChangeSignatureService>();
result = reorderParametersService.ChangeSignature(
document,
caretPoint.Value.Position,
(errorMessage, severity) => workspace.Services.GetService <INotificationService>().SendNotification(errorMessage, severity: severity),
w.CancellationToken);
});
if (waitResult == WaitIndicatorResult.Canceled)
{
return;
}
if (result == null || !result.Succeeded)
{
return;
}
var finalSolution = result.UpdatedSolution;
var previewService = workspace.Services.GetService <IPreviewDialogService>();
if (previewService != null && result.PreviewChanges)
{
finalSolution = previewService.PreviewChanges(
string.Format(EditorFeaturesResources.Preview_Changes_0, EditorFeaturesResources.Change_Signature),
"vs.csharp.refactoring.preview",
EditorFeaturesResources.Change_Signature_colon,
result.Name,
result.Glyph.GetValueOrDefault(),
result.UpdatedSolution,
document.Project.Solution);
}
if (finalSolution == null)
{
// User clicked cancel.
return;
}
using (var workspaceUndoTransaction = workspace.OpenGlobalUndoTransaction(FeaturesResources.Change_signature))
{
if (!workspace.TryApplyChanges(finalSolution))
{
// TODO: handle failure
return;
}
workspaceUndoTransaction.Commit();
}
}
private bool ExecuteCommand(ITextView textView, ITextBuffer subjectBuffer, CommandExecutionContext context)
{
var document = subjectBuffer.CurrentSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document == null)
{
return(false);
}
// TODO: reuse GetCommandState instead
var workspace = document.Project.Solution.Workspace;
if (!workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
{
return(false);
}
var supportsFeatureService = document.Project.Solution.Workspace.Services.GetService <IDocumentSupportsFeatureService>();
if (!supportsFeatureService.SupportsRefactorings(document))
{
return(false);
}
var caretPoint = textView.GetCaretPoint(subjectBuffer);
if (!caretPoint.HasValue)
{
return(false);
}
ChangeSignatureResult result = null;
using (context.WaitContext.AddScope(allowCancellation: true, FeaturesResources.Change_signature))
{
var reorderParametersService = document.GetLanguageService <AbstractChangeSignatureService>();
result = reorderParametersService.ChangeSignature(
document,
caretPoint.Value.Position,
(errorMessage, severity) =>
{
// We are about to show a modal UI dialog so we should take over the command execution
// wait context. That means the command system won't attempt to show its own wait dialog
// and also will take it into consideration when measuring command handling duration.
context.WaitContext.TakeOwnership();
workspace.Services.GetService <INotificationService>().SendNotification(errorMessage, severity: severity);
},
context.WaitContext.UserCancellationToken);
}
if (result == null || !result.Succeeded)
{
return(true);
}
var finalSolution = result.UpdatedSolution;
var previewService = workspace.Services.GetService <IPreviewDialogService>();
if (previewService != null && result.PreviewChanges)
{
// We are about to show a modal UI dialog so we should take over the command execution
// wait context. That means the command system won't attempt to show its own wait dialog
// and also will take it into consideration when measuring command handling duration.
context.WaitContext.TakeOwnership();
finalSolution = previewService.PreviewChanges(
string.Format(EditorFeaturesResources.Preview_Changes_0, EditorFeaturesResources.Change_Signature),
"vs.csharp.refactoring.preview",
EditorFeaturesResources.Change_Signature_colon,
result.Name,
result.Glyph.GetValueOrDefault(),
result.UpdatedSolution,
document.Project.Solution);
}
if (finalSolution == null)
{
// User clicked cancel.
return(true);
}
using (var workspaceUndoTransaction = workspace.OpenGlobalUndoTransaction(FeaturesResources.Change_signature))
{
if (!workspace.TryApplyChanges(finalSolution))
{
// TODO: handle failure
return(true);
}
workspaceUndoTransaction.Commit();
}
return(true);
}
