private void ContentPresenterLoaded(object sender, RoutedEventArgs e)
{
ContentPresenter contentPresenter = sender as ContentPresenter;
GraphicInstance graphicInstance = contentPresenter.Content as GraphicInstance;
LogicalInstance logicalInstance = graphicInstance.LogicalInstance;
TypesManager.Instance.InitProperties(logicalInstance);
Canvas itemsCanvas = VisualTreeHelper.GetChild(contentPresenter, 0) as Canvas;
ObjectType objectType = VisualTreeHelper.GetChild(itemsCanvas, 0) as ObjectType;
SetPropertyBindings(logicalInstance, objectType);
objectType.Clicked += new ClickHandler(ObjectTypeClicked);
Binding bindingSelected = new Binding
{
Mode = BindingMode.TwoWay,
Path = new PropertyPath("SelectedGraphicInstance"),
Source = UIManager.Instance,
Converter = new IdToSelectedConverter(objectType)
};
objectType.SetBinding(ObjectType.SelectedProperty, bindingSelected);
objectType.ZIndexChanged += new ZIndexChangedHandler(ObjectTypeZIndexChanged);
objectType.MouseLeftButtonUp += ObjectTypeMouseLeftButtonUp;
SetContextMenu(objectType);
}
private GraphicInstance CreateGraphicVisualizedInstance(Type type, LogicalInstance logicalInstance, DragEventArgs args)
{
Point position = args.GetPosition(this);
double width = (double)type.GetProperty("Width").GetValue(Activator.CreateInstance(type), null);
double height = (double)type.GetProperty("Height").GetValue(Activator.CreateInstance(type), null);
GraphicInstance graphicInstance = null;
if (type.IsSubclassOf(typeof(NodeType)))
{
ParentableInstance parent = (this.Content as CanvasItemsControl).FindParent(position, graphicInstance);
graphicInstance = new NodeInstance
{
X = position.X,
Y = position.Y,
Width = (width != 0 && !double.IsNaN(width)) ? width : 200,
Height = (height != 0 && !double.IsNaN(height)) ? height : 200,
LogicalInstance = logicalInstance,
Parent = parent
};
}
else
{
graphicInstance = new EdgeInstance
{
X = position.X,
Y = position.Y,
Width = (width != 0 && !double.IsNaN(width)) ? width : 200,
Height = (height != 0 && !double.IsNaN(height)) ? height : 200,
LogicalInstance = logicalInstance,
Parent = InstancesManager.Instance.CanvasRootElement
};
}
return(graphicInstance);
}
protected override void OnDropOverride(Microsoft.Windows.DragEventArgs args)
{
ItemDragEventArgs rawObject = args.Data.GetData(args.Data.GetFormats()[0]) as ItemDragEventArgs;
object droppedItem = (rawObject.Data as System.Collections.ObjectModel.SelectionCollection).First().Item;
LogicalInstance logicalInstance = null;
Type type = null;
bool shouldCreateItem = false;
if (droppedItem is Type)
{
type = droppedItem as Type;
if (CanAddItem(null, type))
{
logicalInstance = new LogicalInstance
{
Name = "anonymous " + (Activator.CreateInstance(type) as ObjectType).TypeName,
Type = type.FullName
};
InstancesManager.Instance.InstancesContext.LogicalInstances.Add(logicalInstance);
shouldCreateItem = true;
}
}
else if (droppedItem is GraphicInstance)
{
logicalInstance = (droppedItem as GraphicInstance).LogicalInstance;
type = TypesManager.Instance.GetType(logicalInstance.Type);
shouldCreateItem = true;
}
if (shouldCreateItem)
{
CreateItem(args, type, logicalInstance);
}
}
private void DeleteGraphicInstance(GraphicInstance graphicInstance)
{
LogicalInstance logicalInstance = graphicInstance.LogicalInstance;
InstancesContext.GraphicInstances.Remove(graphicInstance);
if (!graphicInstance.LogicalInstance.GraphicInstances.Any())
{
InstancesContext.LogicalInstances.Remove(logicalInstance);
}
}
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
GraphicInstance graphicInstance = item as GraphicInstance;
ContentPresenter contentPresenter = element as ContentPresenter;
LogicalInstance logicalInstance = graphicInstance.LogicalInstance;
if (logicalInstance != null)
{
contentPresenter.ContentTemplate = Create(TypesManager.Instance.GetType(logicalInstance.Type));
}
contentPresenter.Loaded += new RoutedEventHandler(ContentPresenterLoaded);
}
private void CreateItem(DragEventArgs args, Type type, LogicalInstance logicalInstance)
{
GraphicInstance graphicInstance = null;
if (InstancesManager.Instance.CanvasRootElement == null)
{
graphicInstance = new RootInstance {
LogicalInstance = logicalInstance
};
}
else
{
graphicInstance = CreateGraphicVisualizedInstance(type, logicalInstance, args);
}
InstancesManager.Instance.InstancesContext.GraphicInstances.Add(graphicInstance);
InstancesManager.Instance.AddInstance(graphicInstance);
InstancesManager.Instance.InstancesContext.SubmitChanges();
}
public void InitProperties(LogicalInstance logicalInstance)
{
Type type = GetType(logicalInstance.Type);
var fields = type.GetFields(BindingFlags.Public | BindingFlags.Static);
foreach (var field in fields.Where(item => item.FieldType == typeof(DependencyProperty)))
{
string propertyName = field.Name.Substring(0, field.Name.LastIndexOf("Property"));
int count = logicalInstance.InstanceProperties.Count(property => property.Name == propertyName);
if (count == 0)
{
InstanceProperty instanceProperty = new InstanceProperty
{
Name = propertyName,
LogicalInstance = logicalInstance
};
logicalInstance.InstanceProperties.Add(instanceProperty);
}
}
}
protected override void OnDropOverride(Microsoft.Windows.DragEventArgs args)
{
ItemDragEventArgs rawObject = args.Data.GetData(args.Data.GetFormats()[0]) as ItemDragEventArgs;
Type type = (rawObject.Data as System.Collections.ObjectModel.SelectionCollection).First().Item as Type;
if (CanAddItem(null, type))
{
LogicalInstance logicalInstance = new LogicalInstance
{
Name = "anonymous " + (Activator.CreateInstance(type) as ObjectType).TypeName,
Type = type.FullName
};
InstancesManager.Instance.InstancesContext.LogicalInstances.Add(logicalInstance);
GraphicInstance graphicInstance = new RootInstance {
LogicalInstance = logicalInstance
};
InstancesManager.Instance.InstancesContext.GraphicInstances.Add(graphicInstance);
InstancesManager.Instance.AddInstance(graphicInstance);
InstancesManager.Instance.InstancesContext.SubmitChanges();
}
}
private static void SetPropertyBindings(LogicalInstance logicalInstance, ObjectType objectType)
{
Type type = objectType.GetType();
var fields = type.GetFields(BindingFlags.Public | BindingFlags.Static);
foreach (var field in fields)
{
if (field.FieldType == typeof(DependencyProperty))
{
string propertyName = field.Name.Substring(0, field.Name.LastIndexOf("Property"));
InstanceProperty instanceProperty = logicalInstance.InstanceProperties.Single(item => item.Name == propertyName);
Binding binding = new Binding
{
Path = new PropertyPath("Value"),
Mode = BindingMode.TwoWay,
Source = instanceProperty
};
DependencyProperty dependencyProperty = field.GetValue(objectType) as DependencyProperty;
objectType.SetBinding(dependencyProperty, binding);
}
}
}
