// SuspendAllFileWatchers/ResumeAllFileWatchers are commented out. They are useful if an
// extension performs an action and then EVERYTHING is reloaded. But it is also dangerous
// if the file watchers can be used to watch files that are not registered documents and
// we cannot make if they are also reloaded.
///// <summary>
///// Suspends the <see cref="FileSystemWatcher"/>s for all documents.
///// </summary>
///// <seealso cref="StartFileWatcher"/>
///// <seealso cref="StopFileWatcher"/>
///// <seealso cref="SuspendFileWatcher"/>
///// <seealso cref="SuspendAllFileWatchers"/>
///// <seealso cref="ResumeFileWatcher"/>
///// <seealso cref="ResumeAllFileWatchers"/>
//public void SuspendAllFileWatchers()
//{
// Logger.Debug("Suspending all file watchers.");
// foreach (var fileWatcher in _fileWatchers)
// fileWatcher.Suspend();
//}
///// <summary>
///// Resumes the <see cref="FileSystemWatcher"/>.
///// </summary>
///// <seealso cref="StopFileWatcher"/>
///// <seealso cref="SuspendFileWatcher"/>
///// <seealso cref="SuspendAllFileWatchers"/>
///// <seealso cref="ResumeFileWatcher"/>
///// <seealso cref="ResumeAllFileWatchers"/>
//public void ResumeAllFileWatchers()
//{
// Logger.Debug("Resuming all file watchers.");
// foreach (var fileWatcher in _fileWatchers)
// fileWatcher.Resume();
//}
private void OnFileChanged(object sender, FileSystemEventArgs eventArgs)
{
var fileWatcher = (FileWatcher)sender;
Debug.Assert(sender != null);
Debug.Assert(eventArgs.ChangeType == WatcherChangeTypes.Changed);
var document = fileWatcher.Document;
Logger.Debug(CultureInfo.InvariantCulture, "File watcher detected change for document \"{0}\".", document.GetName());
// Record file change.
var fileChangeRecord = new FileChangeRecord(document, eventArgs);
lock (_fileChangeRecords)
{
if (_fileChangeRecords.Find(record => record.Document == document) == null)
{
// Multiple changes of the same file are only recorded once.
_fileChangeRecords.Add(fileChangeRecord);
}
}
}
private void ApplyFileChange(FileChangeRecord record, ref ReloadFileChoice unmodifiedDocumentsChoice, ref ReloadFileChoice modifiedDocumentsChoice)
{
Debug.Assert(record.Document != null);
Debug.Assert(record.FileSystemEventArgs != null && record.FileSystemEventArgs.ChangeType == WatcherChangeTypes.Changed);
var document = record.Document;
bool isModified = document.IsModified;
bool reloadFile = false;
if (!isModified && unmodifiedDocumentsChoice == ReloadFileChoice.Prompt ||
isModified && modifiedDocumentsChoice == ReloadFileChoice.Prompt)
{
// Select the affected document
ShowDocument(document);
// Ask the user what to do.
var reloadFileDialog = new ReloadFileViewModel
{
FileName = document.Uri.LocalPath,
IsFileModified = document.IsModified,
DisplayName = Editor.ApplicationName,
};
_windowService.ShowDialog(reloadFileDialog);
switch (reloadFileDialog.ReloadFileDialogResult)
{
case ReloadFileDialogResult.Yes:
// The user has chosen to reload the current document.
// Prompt her again, when another file has changed.
reloadFile = true;
if (isModified)
{
modifiedDocumentsChoice = ReloadFileChoice.Prompt;
}
else
{
unmodifiedDocumentsChoice = ReloadFileChoice.Prompt;
}
break;
case ReloadFileDialogResult.YesToAll:
// The user has chosen to reload the documents for all changed files.
// Apply this rule to all similar files.
reloadFile = true;
if (isModified)
{
modifiedDocumentsChoice = ReloadFileChoice.ReloadAll;
}
else
{
unmodifiedDocumentsChoice = ReloadFileChoice.ReloadAll;
}
break;
case ReloadFileDialogResult.No:
// The user has chosen to ignore the file change for the current document.
// Prompt her again, when another file has changed.
reloadFile = false;
if (isModified)
{
modifiedDocumentsChoice = ReloadFileChoice.Prompt;
}
else
{
unmodifiedDocumentsChoice = ReloadFileChoice.Prompt;
}
break;
case ReloadFileDialogResult.NoToAll:
// The user has chosen to ignore the file change for the current document.
// Apply the same to all other files.
reloadFile = false;
if (isModified)
{
modifiedDocumentsChoice = ReloadFileChoice.IgnoreAll;
}
else
{
unmodifiedDocumentsChoice = ReloadFileChoice.IgnoreAll;
}
break;
default:
throw new InvalidOperationException("Invalid value returned by ReloadFileDialog");
}
}
else
{
// The user has already decided what to do.
if (!document.IsModified && unmodifiedDocumentsChoice == ReloadFileChoice.ReloadAll ||
document.IsModified && modifiedDocumentsChoice == ReloadFileChoice.ReloadAll)
{
reloadFile = true;
}
}
if (reloadFile)
{
Logger.Info(CultureInfo.InvariantCulture, "Reloading document \"{0}\".", document.GetName());
Reload(document, true);
Debug.Assert(document.IsModified == false);
}
}
