public IGraphScene <IVisual, IVisualEdge> LoadFromContent(Content <Stream> source, IGraph <IVisual, IVisualEdge> sourceGraph, IGraphSceneLayout <IVisual, IVisualEdge> layout)
{
var result = default(IGraphScene <IVisual, IVisualEdge>);
try {
var name = string.Empty;
if (source.Description != null)
{
name = source.Description.ToString();
}
Int64 id = 0;
if (source.Source is Int64)
{
id = (Int64)source.Source;
}
result = LoadFromStream(source.Data, sourceGraph, layout);
if (result != null)
{
result.State.Clean = true;
result.State.Hollow = false;
var info = SheetStore.RegisterSceneInfo(id, name);
result.State.CopyTo(info.State);
}
} finally {
}
return(result);
}
protected SceneInfo SaveToThing(IGraphScene <IVisual, IVisualEdge> scene, IGraphSceneLayout <IVisual, IVisualEdge> layout, IThing thing, string name)
{
var result = default(SceneInfo);
if (thing is IStreamThing || thing == null)
{
var content = new Content <Stream> (
new MemoryStream(), CompressionType.bZip2, ContentTypes.LimadaSheet);
var serializer = new SheetSerializer();
serializer.Save(content.Data, scene.Graph, layout);
content.Data.Position = 0;
content.Description = name;
thing = new VisualThingsContentViz().AssignContent(scene.Graph, thing, content);
result = SheetStore.RegisterSceneInfo(thing.Id, name);
result.State.Hollow = false;
result.State.Clean = true;
result.State.CopyTo(scene.State);
}
else
{
throw new ArgumentException("thing must be a StreamThing");
}
return(result);
}
public Stream StreamFromStore(long id)
{
byte [] buffer = null;
try {
if (SheetStore.TryGetValue(id, out buffer))
{
return(new MemoryStream(buffer));
}
} catch (Exception ex) {
// TODO: stream-closed-error should never happen.Try to get reread the source
Registry.Pooled <IExceptionHandler> ().Catch(ex, MessageType.OK);
}
return(null);
}
public bool SaveInStore(IGraphScene <IVisual, IVisualEdge> scene, IGraphSceneLayout <IVisual, IVisualEdge> layout, long id)
{
if (scene.Graph.Count > 0)
{
var stream = new MemoryStream();
new SheetSerializer().Save(stream, scene.Graph, layout);
stream.Position = 0;
SheetStore.Add(id, stream.GetBuffer((int)stream.Length));
return(true);
}
SheetStore.Remove(id);
return(false);
}
public IGraphScene <IVisual, IVisualEdge> LoadFromStore(IGraph <IVisual, IVisualEdge> source, IGraphSceneLayout <IVisual, IVisualEdge> layout, Int64 id)
{
byte [] buffer = null;
try {
if (SheetStore.TryGetValue(id, out buffer))
{
// save state of store:
var info = SheetStore.GetSheetInfo(id);
var state = info.State.Clone();
var result = LoadFromStream(new MemoryStream(buffer), source, layout);
state.CopyTo(info.State);
state.CopyTo(result.State);
return(result);
}
} catch (Exception ex) {
// TODO: stream-closed-error should never happen.Try to get reread the source
Registry.Pooled <IExceptionHandler> ().Catch(ex, MessageType.OK);
}
return(null);
}
public void Clear()
{
SheetStore.Clear();
}
