/// <summary>
/// Clean up.
/// </summary>
protected override void OnDispose()
{
if (this.ShapeElement != null)
{
Unsubscribe();
}
for (int i = this.nestedChildItems.Count - 1; i >= 0; i--)
{
BaseDiagramItemElementViewModel vm = nestedChildItems[i];
this.RemoveNestedChild(vm);
vm.Dispose();
}
for (int i = this.relativeChildItems.Count - 1; i >= 0; i--)
{
BaseDiagramItemElementViewModel vm = relativeChildItems[i];
this.RemoveRelativeChild(vm);
vm.Dispose();
}
this.ShapeElement = null;
this.parentItem = null;
base.OnDispose();
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="source">View model holding the source element.</param>
/// <param name="target">View model holding the target element.</param>
public ViewModelRelationshipCreationInfo(BaseDiagramItemElementViewModel source, BaseDiagramItemElementViewModel target)
{
this.Source = source;
this.Target = target;
this.ProposedSourcePoint = null;
this.ProposedTargetPoint = null;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="source">View model holding the source element.</param>
/// <param name="target">View model holding the target element.</param>
public ViewModelRelationshipCreationInfo(BaseDiagramItemElementViewModel source, BaseDiagramItemElementViewModel target)
{
this.Source = source;
this.Target = target;
this.ProposedSourcePoint = null;
this.ProposedTargetPoint = null;
}
/// <summary>
/// Assigns a parent item to the current item.
/// </summary>
/// <param name="parent">Parent item to be assigned.</param>
/// <param name="bNestedChildItem">True if the child item is a nested item. False for relative item.</param>
public void SetParent(BaseDiagramItemElementViewModel parent, bool bNestedChildItem)
{
this.parentItem = parent;
if (bNestedChildItem && !parent.NestedChildren.Contains(this))
{
parent.AddNestedChild(this);
}
else if (!bNestedChildItem && !parent.RelativeChildren.Contains(this))
{
parent.AddRelativeChild(this);
}
}
/// <summary>
/// Removes this element from its parents collection.
/// </summary>
/// <param name="bNestedChildItem">True if the child item is a nested item. False for relative item.</param>
public void RemoveParent(bool bNestedChildItem)
{
if (this.parentItem != null)
{
if (bNestedChildItem && this.parentItem.NestedChildren.Contains(this))
{
this.parentItem.RemoveNestedChild(this);
}
else if (!bNestedChildItem && this.parentItem.RelativeChildren.Contains(this))
{
this.parentItem.RemoveRelativeChild(this);
}
}
this.parentItem = null;
}
protected BaseDiagramItemElementViewModel(ViewModelStore viewModelStore, DiagramSurfaceViewModel diagram, NodeShape shapeElement)
: base(viewModelStore, diagram, shapeElement)
{
this.itemLocation = shapeElement.Location;
this.itemSize = shapeElement.Size;
this.parentItem = null;
this.nestedChildItems = new ObservableCollection <BaseDiagramItemElementViewModel>();
this.nestedChildItemsRO = new ReadOnlyObservableCollection <BaseDiagramItemElementViewModel>(nestedChildItems);
this.relativeChildItems = new ObservableCollection <BaseDiagramItemElementViewModel>();
this.relativeChildItemsRO = new ReadOnlyObservableCollection <BaseDiagramItemElementViewModel>(relativeChildItems);
Subscribe();
}
protected BaseDiagramItemElementViewModel(ViewModelStore viewModelStore, DiagramSurfaceViewModel diagram, NodeShape shapeElement)
: base(viewModelStore, diagram, shapeElement)
{
this.itemLocation = shapeElement.Location;
this.itemSize = shapeElement.Size;
this.parentItem = null;
this.nestedChildItems = new ObservableCollection<BaseDiagramItemElementViewModel>();
this.nestedChildItemsRO = new ReadOnlyObservableCollection<BaseDiagramItemElementViewModel>(nestedChildItems);
this.relativeChildItems = new ObservableCollection<BaseDiagramItemElementViewModel>();
this.relativeChildItemsRO = new ReadOnlyObservableCollection<BaseDiagramItemElementViewModel>(relativeChildItems);
Subscribe();
}
/// <summary>
/// Called whenever a relationship of type NodeShapeReferencesRelativeChildren is removed and
/// the element hosted by this model is the source.
/// </summary>
/// <param name="args"></param>
protected virtual void OnRelativeChildShapeElementRemoved(ElementDeletedEventArgs args)
{
NodeShapeReferencesRelativeChildren con = args.ModelElement as NodeShapeReferencesRelativeChildren;
NodeShape nodeShape = con.ChildShape;
if (nodeShape != null)
{
for (int i = this.relativeChildItems.Count - 1; i >= 0; i--)
{
if (this.relativeChildItems[i].ShapeElement.Id == nodeShape.Id)
{
BaseDiagramItemElementViewModel vm = this.relativeChildItems[i];
this.RemoveRelativeChild(vm);
vm.Dispose();
}
}
}
}
private void RemoveChild(BaseDiagramItemElementViewModel item, bool bNested)
{
if (bNested && this.nestedChildItems.Contains(item))
{
this.nestedChildItems.Remove(item);
}
else if (!bNested && this.relativeChildItems.Contains(item))
{
this.relativeChildItems.Remove(item);
}
if (item.Parent != null)
{
item.RemoveParent(bNested);
}
if (this.Diagram != null)
{
this.Diagram.RemoveElement(item);
}
}
private void AddChild(BaseDiagramItemElementViewModel item, bool bNested)
{
if (bNested)
{
this.nestedChildItems.Add(item);
}
else
{
this.relativeChildItems.Add(item);
}
if (item.Parent != this)
{
item.SetParent(this, bNested);
}
if (this.Diagram != null)
{
this.Diagram.AddElement(item);
}
}
/// <summary>
/// Removes the given item from the relative children collection.
/// </summary>
/// <param name="item">Child item to be removed.</param>
public void RemoveRelativeChild(BaseDiagramItemElementViewModel item)
{
RemoveChild(item, false);
}
private void AddChild(BaseDiagramItemElementViewModel item, bool bNested)
{
if (bNested)
this.nestedChildItems.Add(item);
else
this.relativeChildItems.Add(item);
if (item.Parent != this)
item.SetParent(this, bNested);
if (this.Diagram != null)
this.Diagram.AddElement(item);
}
/// <summary>
/// Clean up.
/// </summary>
protected override void OnDispose()
{
if (this.ShapeElement != null)
Unsubscribe();
for (int i = this.nestedChildItems.Count - 1; i >= 0; i--)
{
BaseDiagramItemElementViewModel vm = nestedChildItems[i];
this.RemoveNestedChild(vm);
vm.Dispose();
}
for (int i = this.relativeChildItems.Count - 1; i >= 0; i--)
{
BaseDiagramItemElementViewModel vm = relativeChildItems[i];
this.RemoveRelativeChild(vm);
vm.Dispose();
}
this.ShapeElement = null;
this.parentItem = null;
base.OnDispose();
}
/// <summary>
/// Removes this element from its parents collection.
/// </summary>
/// <param name="bNestedChildItem">True if the child item is a nested item. False for relative item.</param>
public void RemoveParent(bool bNestedChildItem)
{
if (this.parentItem != null)
{
if (bNestedChildItem && this.parentItem.NestedChildren.Contains(this))
this.parentItem.RemoveNestedChild(this);
else if (!bNestedChildItem && this.parentItem.RelativeChildren.Contains(this))
this.parentItem.RemoveRelativeChild(this);
}
this.parentItem = null;
}
/// <summary>
/// Assigns a parent item to the current item.
/// </summary>
/// <param name="parent">Parent item to be assigned.</param>
/// <param name="bNestedChildItem">True if the child item is a nested item. False for relative item.</param>
public void SetParent(BaseDiagramItemElementViewModel parent, bool bNestedChildItem)
{
this.parentItem = parent;
if (bNestedChildItem && !parent.NestedChildren.Contains(this))
{
parent.AddNestedChild(this);
}
else if (!bNestedChildItem && !parent.RelativeChildren.Contains(this))
parent.AddRelativeChild(this);
}
private void RemoveChild(BaseDiagramItemElementViewModel item, bool bNested)
{
if (bNested && this.nestedChildItems.Contains(item))
this.nestedChildItems.Remove(item);
else if (!bNested && this.relativeChildItems.Contains(item))
this.relativeChildItems.Remove(item);
if (item.Parent != null)
item.RemoveParent(bNested);
if( this.Diagram != null )
this.Diagram.RemoveElement(item);
}
/// <summary>
/// Removes the given item from the nested children collection.
/// </summary>
/// <param name="item">Child item to be removed.</param>
public void RemoveNestedChild(BaseDiagramItemElementViewModel item)
{
RemoveChild(item, true);
}
/// <summary>
/// Adds a nested child item to the current item.
/// </summary>
/// <param name="item">Child item to be added.</param>
public void AddNestedChild(BaseDiagramItemElementViewModel item)
{
AddChild(item, true);
}
/// <summary>
/// Removes the given item from the relative children collection.
/// </summary>
/// <param name="item">Child item to be removed.</param>
public void RemoveRelativeChild(BaseDiagramItemElementViewModel item)
{
RemoveChild(item, false);
}
/// <summary>
/// Removes the given item from the nested children collection.
/// </summary>
/// <param name="item">Child item to be removed.</param>
public void RemoveNestedChild(BaseDiagramItemElementViewModel item)
{
RemoveChild(item, true);
}
/// <summary>
/// Adds a nested child item to the current item.
/// </summary>
/// <param name="item">Child item to be added.</param>
public void AddNestedChild(BaseDiagramItemElementViewModel item)
{
AddChild(item, true);
}