/// <summary>
/// Function to create a file system watcher for the specified file.
/// </summary>
/// <param name="values">Values used to determine if there are any changes to the file.</param>
/// <returns>The file system watcher used to determine if the file changes or not.</returns>
private FileSystemWatcher CreateWatcher(WatchValues values)
{
FileSystemWatcher result;
result = new FileSystemWatcher
{
NotifyFilter = NotifyFilters.Attributes | NotifyFilters.CreationTime | NotifyFilters.LastWrite | NotifyFilters.Size,
Path = Path.GetDirectoryName(values.FilePath).FormatDirectory(Path.DirectorySeparatorChar),
Filter = "*" + Path.GetExtension(values.FilePath),
IncludeSubdirectories = false,
EnableRaisingEvents = true
};
result.Changed += (s, e) =>
{
if (!string.Equals(values.FilePath, e.FullPath, StringComparison.OrdinalIgnoreCase))
{
return;
}
values.HasChanges = true;
};
return(result);
}
/// <summary>Function to edit the image data in an external application.</summary>
/// <param name="workingFile">The file containing the image data to edit.</param>
/// <returns>
/// <b>true</b> if the image data was changed, <b>false</b> if not.</returns>
/// <exception cref="IOException">Thrown if no associated executable was found for the file type.</exception>
public bool EditImage(IGorgonVirtualFile workingFile)
{
string exePath = GetExecutable(workingFile);
if ((string.IsNullOrWhiteSpace(exePath)) || (!File.Exists(exePath)))
{
throw new IOException(string.Format(Resources.GORIMG_ERR_NO_EXTERNAL_EDITOR, workingFile.Name));
}
GorgonApplication.MainForm.Visible = false;
var startInfo = new ProcessStartInfo(exePath)
{
ErrorDialog = true,
ErrorDialogParentHandle = GorgonApplication.MainForm.Handle,
RedirectStandardError = true,
RedirectStandardOutput = true,
WindowStyle = ProcessWindowStyle.Maximized,
UseShellExecute = false,
WorkingDirectory = Path.GetDirectoryName(workingFile.PhysicalFile.FullPath).FormatDirectory(Path.DirectorySeparatorChar),
Arguments = $"\"{workingFile.PhysicalFile.FullPath}\""
};
Process externalProcess = null;
var values = new WatchValues()
{
FilePath = workingFile.PhysicalFile.FullPath,
HasChanges = false
};
FileSystemWatcher watcher = CreateWatcher(values);
try
{
_log.Print($"Launching {startInfo.FileName} to edit {workingFile.FullPath}", LoggingLevel.Verbose);
externalProcess = Process.Start(startInfo);
externalProcess.WaitForExit();
if (!values.HasChanges)
{
_log.Print($"{startInfo.FileName} closed. No changes detected on {workingFile.FullPath}.", LoggingLevel.Verbose);
return(false);
}
_log.Print($"{startInfo.FileName} closed. Changes detected on {workingFile.FullPath}.", LoggingLevel.Verbose);
}
finally
{
watcher?.Dispose();
externalProcess?.Dispose();
GorgonApplication.MainForm.Visible = true;
}
return(true);
}
