How to show graph with particular node collapsed

GoDiagram (6 and previous)
1 
    protected void GenerateTree()
    {
        n = new TreeAppNode();
        n.Editable = false;
        n.Selectable = true;
        goView1.ObjectSingleClicked += new GoObjectEventHandler(this.goView1_ObjectSingleClicked);

        n.LabelSpot = GoObject.Middle;
        n.Text = "";
        n.Shape = new GoRoundedRectangle();
        tr = new GoXmlBindingTransformer("node", n);
        tr.TreeStructured = true;
        tr.TreeLinkPrototype = new GoLink();
        tr.TreeLinksToChildren = true;

        tr.AddBinding("label", "Text");
        doc = goView1.Document;

        rdr = new GoXmlReader();
        rdr.AddTransformer(tr);
        rdr.RootObject = goView1.Document;
        using (StreamReader file = new StreamReader(fileToLoad))
        {
            rdr.Consume(file);
        }
        layout = new GoLayoutTree();
        layout.Document = doc;
        goView1.Dock = DockStyle.Fill;
        // other customizations are described in the GoLayout User Guide
        layout.PerformLayout();
    }

The code above draws my graph from an xml file i have. Every node is expandable/contractble. How can you specify on loading the graph that a certain node be collapsed.?

Also, i have a massive subgraph in one of my nodes. It takes up a lot of space. If i minimise it, space in the graph is freed, but the graph doesnt resize to consume the space? Is this possible

thanks

2

i would like to add that i have managed to start the programme with the required node collpased by doing this;

        foreach (GoObject o in d)
        {
            if (o is TreeAppNode)
            {
                TreeAppNode n = (TreeAppNode)o;
                if (n.Text.Equals("some text")) 
                {
                    n.Collapse();
                }
            }
        }

however, there is still masses of white space. How can you get the graph to redraw to remove this space until the node is expanded?

thanks

3

GoDiagram doesn’t do anything to the “other” nodes when you expand/collapse a node. But you could do your GoLayoutTree PerformLayout after every expand/collapse.

4

[QUOTE=Jake]GoDiagram doesn’t do anything to the “other” nodes when you expand/collapse a node. But you could do your GoLayoutTree PerformLayout after every expand/collapse. [/quote]even then, the node space does not dissapear as the graph knows how big the collapsed node needs to be when it is expanded.

5

Look at the DataSetDemo sample and do what it does where it prunes the invisible nodes out of the LayoutNetwork.