} // ctor
#endregion
#region -- Load, Close --------------------------------------------------------
private async Task OpenPdfAsync(object data)
{
switch (data)
{
case string fileName: // open a file from disk
using (var bar = this.DisableUI(String.Format("Lade Pdf-Datei ({0})...", fileName)))
SetLoadedDocument(await LoadDocumentFromFileNameAsync(fileName)); // parse pdf in background
break;
case IPpsDataInfo info: // open a internal object
using (var bar = this.DisableUI(String.Format("Lade Pdf-Dokument ({0})...", info.Name)))
{
dataInfo = info;
// create access
dataAccess = await info.LoadAsync();
dataAccess.DisableUI = () => this.DisableUI("Pdf-Dokument wird bearbeitet...");
dataAccess.DataChanged += async(sender, e) => await LoadDocumentFromObjectAsync();
await LoadDocumentFromObjectAsync();
}
break;
case null:
throw new ArgumentNullException(nameof(data));
default:
throw new ArgumentException($"Invalid pdf-data container {data.GetType().Name}.", nameof(data));
}
} // proc OpenPdfAsync
} // ctor
#region -- Append new object ----------------------------------------------
public void Append(IPpsDataInfo data)
{
if (sourceRows is IPpsDataView view)
{
using (var trans = view.Table.DataSet.UndoSink?.BeginTransaction("Datei hinzugefügt."))
{
var r = view.NewRow(null, null);
r[linkColumnIndex] = data;
view.Add(r);
trans.Commit();
}
}
} // proc Append
} // proc SetLoadedDocument
private bool ClosePdf()
{
// clear document
pdfViewer.Document = null;
// close pdf
loadedDocument?.Dispose();
// close object access
if (dataAccess != null)
{
dataAccess.Dispose();
dataAccess = null;
}
dataInfo = null;
return(true);
} // func ClosePdf
} // proc AttachRowPropertyChanged
private void AttachObjectPropertyChanged()
{
// disconnect old
if (currentLinkedObject is INotifyPropertyChanged pc)
{
pc.PropertyChanged -= ForwarObjectPropertyChanged;
}
// connect to new
currentLinkedObject = row[linkColumnIndex] as IPpsDataInfo;
if (currentLinkedObject is INotifyPropertyChanged pc1)
{
pc1.PropertyChanged += ForwarObjectPropertyChanged;
}
// raise events
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Name)));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(LinkedObject)));
} // proc AttachObjectPropertyChanged
/// <summary></summary>
/// <param name="dataInfo"></param>
public PpsMarkdownDocumentModel(IPpsDataInfo dataInfo)
{
this.dataInfo = dataInfo;
} // ctor
