private async Task AddNewDiagramAsync(Uri newDiagramUri)
{
string newFilePath = newDiagramUri.LocalPath;
if (String.IsNullOrEmpty(Path.GetExtension(newFilePath)))
{
newFilePath += FileExtension;
}
var newDiagram = new Diagram
{
File = new FileInfo(newFilePath),
Content = String.Format(NewDiagramTemplate, Path.GetFileNameWithoutExtension(newFilePath) + ".png")
};
_diagramLocation.Value = new DirectoryInfo(Path.GetDirectoryName(newFilePath));
var progress = _notifications.StartProgress(false);
try
{
await _diagramIO.SaveAsync(newDiagram, false);
var refreshedDiagram = await _diagramIO.ReadAsync(newDiagram.File);
var preview = PreviewDiagrams.SingleOrDefault(p => FileComparer.Equals(p.Diagram.File, refreshedDiagram.File));
if (preview == null)
{
preview = _previewDiagramFactory(refreshedDiagram);
PreviewDiagrams.Add(preview);
}
CurrentPreviewDiagram = preview;
OnOpenPreviewRequested(preview);
progress.Report(ProgressUpdate.Completed(string.Empty));
}
catch (Exception e)
{
progress.Report(ProgressUpdate.Failed(e));
}
}
/// <see cref="IDiagramExplorer.OpenDiagramAsync"/>
public async Task <Diagram> OpenDiagramAsync(Uri diagramPath)
{
var fileToOpen = new FileInfo(diagramPath.LocalPath);
Diagram diagram;
var preview = PreviewDiagrams.SingleOrDefault(p => FileComparer.Equals(p.Diagram.File, fileToOpen));
if (preview == null)
{
diagram = await _diagramIO.ReadAsync(fileToOpen);
preview = _previewDiagramFactory(diagram);
}
else
{
diagram = preview.Diagram;
}
OnOpenPreviewRequested(preview);
return(diagram);
}