public void SynchronizeConnectors()
{
string node_source = NodeSource;
string connector_source = ConnectorSource;
var k = ModelSource;
var type = k.GetType();
var connectorsproperty = type.GetProperty(connector_source);
var connectors = connectorsproperty.GetValue(k) as IList;
if (connectors.Count == Connections.Count)
{
for (int i = 0; i < this.Connections.Count; i++)
{
ErdLineConnector lc = this.Connections[i] as ErdLineConnector;
lc.DataContext = connectors[i];
lc.Style = ConnectorStyle as Style;
lc.ApplyTemplate();
}
foreach (Node n in this.Nodes)
{
// find a ContentPresenter of that list item.. [Call FindVisualChild Method]
ContentPresenter ContentPresenterObj = WpfUIUtilities.FindVisualChild <ContentPresenter>(n);
// call FindName on the DataTemplate of that ContentPresenter
DataTemplate DataTemplateObj = ContentPresenterObj.ContentTemplate;
// Label Chk = (Label)DataTemplateObj.FindName("lbl", ContentPresenterObj);
Header header = (Header)WpfUIUtilities.FindVisualChild <Header>(ContentPresenterObj);
if (header == null)
{
continue;
}
string content = header.ItemName;
foreach (var ee in this.Connections)
{
if (!(ee is ErdLineConnector))
{
continue;
}
ErdLineConnector er = ee as ErdLineConnector;
if (er.HeadNodeName == content)
{
er.HeadNode = n;
}
if (er.TailNodeName == content)
{
er.TailNode = n;
}
er.ApplyTemplate();
}
}
}
}
private static void OnModelSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ErdDiagramModel erd = d as ErdDiagramModel;
string node_source = erd.NodeSource;
string connector_source = erd.ConnectorSource;
var newElement = e.NewValue;
var type = newElement.GetType();
var nodesproperty = type.GetProperty(node_source);
var connectorproperty = type.GetProperty(connector_source);
if (nodesproperty == null || connectorproperty == null)
{
return;
}
var nodes = nodesproperty.GetValue(newElement) as IList;
var connectors = connectorproperty.GetValue(newElement) as IList;
if (!(nodes is IList) || !(connectors is IList))
{
return;
}
int i = 1;
foreach (var node in nodes)
{
Node newnode = new Node();
newnode.OffsetX = 300 * i;
i++;
newnode.OffsetY = 10 * i;
newnode.ContentTemplate = erd.ItemTemplate;
newnode.Content = node;
erd.Nodes.Add(newnode);
}
foreach (var connector in connectors)
{
ErdLineConnector lc = new ErdLineConnector();
lc.Content = connector;
lc.DataContext = connector;
lc.Style = erd.ConnectorStyle;
lc.ApplyTemplate();
erd.Connections.Add(lc);
}
}
private void ErdDiagramControl_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
ErdDiagramModel model = this.Model as ErdDiagramModel;
foreach (Node n in model.Nodes)
{
ContentPresenter ContentPresenterObj = WpfUIUtilities.FindVisualChild <ContentPresenter>(n);
// call FindName on the DataTemplate of that ContentPresenter
DataTemplate DataTemplateObj = ContentPresenterObj.ContentTemplate;
// Label Chk = (Label)DataTemplateObj.FindName("lbl", ContentPresenterObj);
Header header = (Header)WpfUIUtilities.FindVisualChild <Header>(ContentPresenterObj);
/* Panel pnl = n.ContentTemplate.LoadContent() as Panel;
* if (pnl == null) throw new Exception("The first element of template must be panel");
* Header header = pnl.Children[0] as Header;*/
if (header == null)
{
throw new Exception("The first element of template must be header");
}
string content = header.ItemName;
foreach (var ee in model.Connections)
{
if (!(ee is ErdLineConnector))
{
continue;
}
ErdLineConnector er = ee as ErdLineConnector;
if (er.HeadNodeName == content)
{
er.HeadNode = n;
}
if (er.TailNodeName == content)
{
er.TailNode = n;
}
er.ApplyTemplate();
}
}
}
private static void OnTailNodeRelationChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ErdLineConnector lineconnector = d as ErdLineConnector;
Decorator decorator = GetShape(lineconnector, e.NewValue.ToString());
lineconnector.TailDecoratorShape = decorator.shape;
lineconnector.TailDecoratorStyle = decorator.style;
if (lineconnector.HeadNode != null && lineconnector.TailNode != null)
{
RegularConnectorPositionStrategy r = new RegularConnectorPositionStrategy();
r.headNodeHeigth = lineconnector.HeadNode.ActualHeight;
r.headNodeWidth = lineconnector.HeadNode.ActualWidth;
r.headNodePosition = new Point(lineconnector.HeadNode.OffsetX, lineconnector.HeadNode.OffsetY);
r.tailNodeHeight = lineconnector.TailNode.ActualHeight;
r.tailNodeWidth = lineconnector.TailNode.ActualWidth;
r.tailNodePosition = new Point(lineconnector.TailNode.OffsetX, lineconnector.TailNode.OffsetY);
KeyValuePair <Point, Point> kvp = r.GetPosition();
lineconnector.StartPointPosition = kvp.Key;
lineconnector.EndPointPosition = kvp.Value;
}
//lineconnector.TailDecoratorPosition = new Point(lineconnector.TailNode.Position.X, lineconnector.TailNode.Position.Y);
}
private static Decorator GetShape(ErdLineConnector lineconnector, string relationval)
{
Decorator d = new Decorator();
d.shape = DecoratorShape.Circle;
d.style = new DecoratorStyle();
switch (relationval.ToUpper())
{
case "ONE": d.style.Fill = new SolidColorBrush(Colors.White);
break;
case "MANY":
d.style.Fill = new SolidColorBrush(Colors.Aqua);
break;
case "INHERITANCE":
d.shape = DecoratorShape.Arrow;
break;
default: break;
}
return(d);
}