protected override Size MeasureOverride(Size availableSize)
{
if (Children.Count == 0)
{
return(new Size(100, 20));
}
Size szFinal = new Size(0, 0);
string strRoot = Root;
TreeCanvasNode tnRoot = this.FindName(strRoot) as TreeCanvasNode;
foreach (UIElement uiel in InternalChildren)
{
uiel.Measure(availableSize);
Size szThis = uiel.DesiredSize;
if (szThis.Width > szFinal.Width || szThis.Height > szFinal.Height)
{
szFinal = new Size(
Math.Max(szThis.Width, szFinal.Width),
Math.Max(szThis.Height, szFinal.Height));
}
}
if (tnRoot != null)
{
SetParents(tnRoot);
_ltd = new LayeredTreeDraw(tnRoot, HorizontalBuffer, HorizontalBufferSubtree, VerticalBuffer, VerticalJustification.top);
_ltd.LayoutTree();
szFinal = new Size(_ltd.PxOverallWidth, _ltd.PxOverallHeight);
}
return(szFinal);
}
public static TreeCanvasNode GetParentElement(TreeCanvasNode tn)
{
TreeCanvas tc;
TreeCanvasNode tnParent;
if (tn == null)
{
return(null);
}
tc = tn.Parent as TreeCanvas;
if (tc == null)
{
return(null);
}
string strParent = tn.TreeParent;
if (strParent == null)
{
return(null);
}
tnParent = tc.FindName(strParent) as TreeCanvasNode;
if (tnParent == null)
{
return(null);
}
return(tnParent);
}
static public void CollapsiblePropertyChange(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
TreeCanvasNode tn = o as TreeCanvasNode;
if (((bool)e.NewValue) == false && tn != null)
{
tn.Collapsed = false;
}
}
public TreeCanvasNode AddNode(Object objContent, string strName, string strParent)
{
TreeCanvasNode tnNew = new TreeCanvasNode();
SetName(tnNew, strName);
tnNew.Content = objContent;
tnNew.TreeParent = strParent;
Children.Add(tnNew);
return(tnNew);
}
public TreeCanvasNode AddRoot(Object objContent, string strName)
{
TreeCanvasNode tnNew = new TreeCanvasNode();
SetName(tnNew, strName);
tnNew.Content = objContent;
Children.Add(tnNew);
Root = strName;
return(tnNew);
}
private static object CollapsePropertyCoerce(DependencyObject d, object value)
{
TreeCanvasNode tn = (TreeCanvasNode)d;
bool fCollapsed = (bool)value;
if (!tn.Collapsible)
{
fCollapsed = false;
}
return(fCollapsed);
}
internal bool SetParent()
{
TreeCanvasNode tn = GetParentElement(this);
if (tn == null)
{
return(false);
}
tn.TreeChildren.Add(this);
return(true);
}
private void OnContextCreated(ProcessProxy context)
{
if (context.Parent == null)
{
Dictionary[context.Guid] = CreateNode(null, context);
return;
}
//else
TreeCanvasNode parentNode = Dictionary[context.Parent.Guid];
Dictionary[context.Guid] = CreateNode(parentNode, context);
}
static public void CollapsePropertyChange(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
TreeCanvasNode tn = o as TreeCanvasNode;
if (tn != null && tn.Collapsible)
{
bool fCollapsed = ((bool)e.NewValue);
foreach (TreeCanvasNode tnCur in LayeredTreeDraw.VisibleDescendants <TreeCanvasNode>(tn))
{
tnCur.Visibility = fCollapsed ? Visibility.Hidden : Visibility.Visible;
}
}
}
protected override Size ArrangeOverride(Size finalSize)
{
foreach (UIElement uiel in InternalChildren)
{
TreeCanvasNode tn = uiel as TreeCanvasNode;
Point ptLocation = new Point(0, 0);
if (tn != null)
{
ptLocation = new Point(_ltd.X(tn), _ltd.Y(tn));
}
uiel.Arrange(new Rect(ptLocation, uiel.DesiredSize));
}
return(finalSize);
}
private void SetParents(TreeCanvasNode tnRoot)
{
// First pass to clear all parents
foreach (UIElement uiel in InternalChildren)
{
TreeCanvasNode tn = uiel as TreeCanvasNode;
if (tn != null)
{
tn.ClearParent();
}
}
// Second pass to properly set them from their children...
foreach (UIElement uiel in InternalChildren)
{
TreeCanvasNode tn = uiel as TreeCanvasNode;
if (tn != null && tn != tnRoot)
{
tn.SetParent();
}
}
}
public TreeCanvasNode CreateNode(TreeCanvasNode parent, ProcessProxy context)
{
if (context == null)
{
return(null);
}
//else
System.Windows.Controls.Button control = new System.Windows.Controls.Button();
control.Content = context.Label;
control.Click += (s, e) => InspectContext(context);
//
TreeCanvasNode canvasNode;
if (parent == null)
{
canvasNode = Canvas.AddRoot(control);
}
else
{
canvasNode = Canvas.AddNode(control, parent);
}
return(canvasNode);
}
public TreeCanvasNode AddNode(Object objContent, TreeCanvasNode tnParent)
{
return(AddNode(objContent, StrNextName(), tnParent.Name));
}
public TreeCanvasNode AddNode(Object objContent, string strName, TreeCanvasNode tnParent)
{
return(AddNode(objContent, strName, tnParent.Name));
}
private void SetName(TreeCanvasNode tn, string strName)
{
tn.Name = strName;
RegisterName(strName, tn);
}