/// <summary>
/// A new GraphView will have a GraphDoc as its document.
/// </summary>
/// <returns>A <see cref="GraphDoc"/></returns>
public override GoDocument CreateDocument()
{
GoDocument doc = new GraphDoc();
doc.UndoManager = new GoUndoManager();
return(doc);
}
public static List <GraphViewWindow> OpenAll()
{
List <GraphViewWindow> windows = new List <GraphViewWindow>();
if (!System.IO.Directory.Exists(@".\Config\FlowChart\"))
{
System.IO.Directory.CreateDirectory(@".\Config\FlowChart\");
}
var filePaths = Directory.GetFiles(@".\Config\FlowChart\");
foreach (var item in filePaths)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.FileName = item;
String loc = item;
GraphDoc olddoc = GraphDoc.FindDocument(loc);
if (olddoc != null)
{
//IList windows = GraphViewWindow.FindWindows(mdiparent, olddoc);
//if (windows.Count > 0)
//{
// GraphViewWindow w = windows[0] as GraphViewWindow;
// if (w.Reload())
// {
// w.Show();
// w.Activate();
// }
// return w;
//}
}
else
{
Stream file = dlg.OpenFile();
if (file != null)
{
GraphDoc doc = null;
try
{
doc = GraphDoc.Load(file, loc);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error reading graph from a file");
}
finally
{
file.Close();
}
if (doc != null)
{
GraphViewWindow w = new GraphViewWindow();
w.View.Document = doc;
w.Activate();
windows.Add(w);
}
}
}
}
return(windows);
}
protected override void OnClosed(EventArgs evt)
{
base.OnClosed(evt);
IList windows = FindWindows(this.MdiParent, this.Doc);
if (windows.Count <= 1)
{
GraphDoc.RemoveDocument(this.Doc.Location);
}
}
public static GraphViewWindow Open(DockPanel dockPanel1)
{
OpenFileDialog dlg = new OpenFileDialog();
if (dlg.ShowDialog() == DialogResult.OK)
{
String loc = dlg.FileName;
GraphDoc olddoc = GraphDoc.FindDocument(loc);
if (olddoc != null)
{
return(null);
//IList windows = GraphViewWindow.FindWindows(mdiparent, olddoc);
//if (windows.Count > 0)
//{
// GraphViewWindow w = windows[0] as GraphViewWindow;
// if (w.Reload())
// {
// w.Show();
// w.Activate();
// }
// return w;
//}
}
else
{
Stream file = dlg.OpenFile();
if (file != null)
{
GraphDoc doc = null;
try
{
doc = GraphDoc.Load(file, loc);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error reading graph from a file");
}
finally
{
file.Close();
}
if (doc != null)
{
GraphViewWindow w = new GraphViewWindow();
w.View.Document = doc;
w.Show(dockPanel1, DockState.Document);
w.Activate();
return(w);
}
}
return(null);
}
}
return(null);
}
// ICustomTypeDescriptor
/// <summary>
/// When the document is read-only, this implementation of GetAttributes
/// dynamically adds a ReadOnlyAttribute to the collection of attributes for
/// this class, to disable the PropertyGrid in which this object is being
/// displayed.
/// </summary>
/// <returns></returns>
public AttributeCollection GetAttributes()
{
AttributeCollection coll = TypeDescriptor.GetAttributes(this, true);
GraphDoc doc = this.GraphNode.Document as GraphDoc;
if (doc != null && doc.IsReadOnly)
{
ReadOnlyAttribute ro = new ReadOnlyAttribute(true);
Attribute[] atts = new Attribute[coll.Count + 1];
coll.CopyTo(atts, 0);
atts[coll.Count] = ro;
return(new AttributeCollection(atts));
}
return(coll);
}
public static IList FindWindows(Form mdiparent, GraphDoc doc)
{
ArrayList windows = new ArrayList();
Form[] children = mdiparent.MdiChildren;
foreach (Form f in children)
{
GraphViewWindow w = f as GraphViewWindow;
if (w != null && w.Doc == doc)
{
windows.Add(w);
}
}
return(windows);
}
public static GraphDoc Load(Stream file, String loc)
{
GoXmlReader xr = new GoXmlReader();
InitReaderWriter(xr);
GraphDoc doc = xr.Consume(file) as GraphDoc;
if (doc == null)
{
return(null);
}
doc.EnsureUniquePartID();
// update the file location
doc.Location = loc;
// undo managers are not serialized
doc.UndoManager = new GoUndoManager();
doc.IsModified = false;
AddDocument(loc, doc);
return(doc);
}
public virtual bool Reload()
{
String loc = this.Doc.Location;
if (loc != "")
{
FileStream file = File.Open(loc, FileMode.Open);
GraphDoc olddoc = this.View.Doc;
GraphDoc newdoc = null;
try
{
newdoc = GraphDoc.Load(file, loc);
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message, "Error reading graph from a file");
return(false);
}
finally
{
file.Close();
}
if (newdoc != null)
{
IList windows = GraphViewWindow.FindWindows(this.MdiParent, olddoc);
foreach (Object obj in windows)
{
GraphViewWindow w = obj as GraphViewWindow;
if (w != null)
{
w.View.Document = newdoc;
}
}
}
}
return(true);
}
internal static void AddDocument(String location, GraphDoc doc)
{
myDocuments[location] = doc;
}
