public void OfferAllNodes(GlGraph working_graph)
{
List<NodeWrapper> valid_targets = new List<NodeWrapper>();
foreach (GlGraphNode loop_node in working_graph.AllNodes)
{
valid_targets.Add(new NodeWrapper(loop_node));
}
comboTargetNodes.DisplayMember = "NodeName";
comboTargetNodes.DataSource = new BindingList<NodeWrapper>(valid_targets);
comboTargetNodes.Refresh();
}
// constructor is INTERNAL because client code should generate edges by using the graph node class's "ConnectTo" method
internal GlGraphEdge(GlGraph parent_graph, GlGraphNode _source, GlGraphNode _target, bool create_in_db)
{
_ParentGraph = parent_graph;
if (create_in_db)
{
parent_graph.GlNodeRef.Set(GlobalsGraphAdmin.GL_EDGE_FLAG, GlobalsGraphAdmin.GL_EDGES_SUBSCRIPT, _source.NodeUID.ToString(), _target.NodeUID.ToString());
}
source_node = _source;
target_node = _target;
Attach();
}
public void InitForNewEdge(GlGraph working_graph, GlGraphNode start_node)
{
List<NodeWrapper> valid_targets = new List<NodeWrapper>();
foreach (GlGraphNode loop_node in working_graph.AllNodes)
{
if (start_node.FindConnectionTo(loop_node) == null)
{
valid_targets.Add(new NodeWrapper(loop_node));
}
}
comboTargetNodes.DisplayMember = "NodeName";
comboTargetNodes.DataSource = new BindingList<NodeWrapper>(valid_targets);
comboTargetNodes.Refresh();
}
public static void AddGraphNode(GlGraph parent_graph, string new_node_name)
{
// biz rule
parent_graph.CreateNewNode().SetCustomString(NODE_NAME_PROPERTY, new_node_name);
}
// build a graphnode class around an existing graph node in the DB; used during initialization
internal GlGraphNode(GlGraph parent_graph, Guid node_guid)
{
_NodeUID = node_guid;
_ParentGraph = parent_graph;
}
// create a new node on a graph
internal GlGraphNode(GlGraph parent_graph)
{
_NodeUID = Guid.NewGuid();
_ParentGraph = parent_graph;
_ParentGraph.GlNodeRef.Set(GlobalsGraphAdmin.GL_NODE_FLAG, GlobalsGraphAdmin.GL_NODES_SUBSCRIPT, _NodeUID.ToString());
}
// build a graphnode class around an existing graph node in the DB; used during initialization
internal GlGraphNode(GlGraph parent_graph, Guid node_guid)
{
_NodeUID = node_guid;
_ParentGraph = parent_graph;
}
// create a new node on a graph
internal GlGraphNode(GlGraph parent_graph)
{
_NodeUID = Guid.NewGuid();
_ParentGraph = parent_graph;
_ParentGraph.GlNodeRef.Set(GlobalsGraphAdmin.GL_NODE_FLAG, GlobalsGraphAdmin.GL_NODES_SUBSCRIPT, _NodeUID.ToString());
}
private void comboGraphs_SelectedIndexChanged(object sender, EventArgs e)
{
if (BuildingGraphList) return;
if (comboGraphs.SelectedItem.ToString() == GRAPH_CHOOSE_ENTRY)
{
// it's the "choose ..." entry
CurrentGraph = null;
RebuildNodeList();
buttonNewNode.Enabled = false;
}
else
{
string err_msg = "";
CurrentGraph = GlobalsGraphAdmin.OpenGraph(comboGraphs.SelectedItem.ToString(), out err_msg);
if (CurrentGraph == null)
MessageBox.Show(err_msg);
else
RebuildNodeList();
buttonNewNode.Enabled = true;
}
buttonDeleteGraph.Enabled = (CurrentGraph != null);
}