/// <summary>
/// Get the object at the hit point
/// </summary>
/// <param name="p">The point to hit (in document co-ordinates)</param>
/// <returns>The object, null if no object under the point</returns>
private IGraphObject GetHitObjectInternal(PointF p)
{
IGraphObject match = null;
for (int i = _nodes.Count; i > 0; --i)
{
GraphNode s = _nodes[i - 1];
if (s.HitTest(p))
{
match = s;
break;
}
}
if (match == null)
{
foreach (var l in _lines)
{
if (l.HitTest(p))
{
match = l;
break;
}
}
}
return(match);
}
/// <summary>
/// Select an object by point
/// </summary>
/// <param name="p">The point to select (in document co-ordinates)</param>
/// <returns>The graph object selected, null if not nothing selected</returns>
private IGraphObject SelectObjectInternal(PointF p)
{
IGraphObject match = GetHitObjectInternal(p);
if (match != null)
{
SelectedObject = match;
if (match is GraphNode)
{
GraphNode node = (GraphNode)match;
_nodes.ForEach(n => n.Z = 0);
node.Z = 1;
MoveNodeToTop(node);
}
}
else
{
SelectedObject = null;
}
Invalidate();
return(match);
}
public static object TreatData(object Data, Graph Graph)
{
if (Data is IDictionary)
{
Dictionary <string, object> d = Data as Dictionary <string, object>;
if (d.ContainsKey("type") && d.ContainsKey("id"))
{
string id = d["id"] as string;
IGraphObject variable = Graph.AssociatedInterlink.GetLinkedVariableByID(id);
if (d["type"] as string != variable.GetObjectType())
{
throw new Exception("Types for variable " + id + " do not match: " + (d["type"] as string) + " != " + variable.GetObjectType());
}
return(variable);
}
else
{
throw new Exception("TODO");
}
}
else
{
return(Data);
}
}
private void GraphEditorClass_MouseDown(object sender, MouseEventArgs e)
{
PointF mousePos = ClientToDocumentPoint(new PointF(e.X, e.Y));
if (_heldButton == MouseButtons.None)
{
if ((e.Button == MouseButtons.Left) && (ModifierKeys != Keys.Control))
{
SelectObjectInternal(mousePos);
_lastDragPoint = mousePos;
_heldButton = e.Button;
_draggingMode = DraggingMode.MoveNode;
}
else if ((e.Button == MouseButtons.Middle) || ((e.Button == MouseButtons.Left) && (ModifierKeys == Keys.Control)))
{
IGraphObject s = SelectObjectInternal(mousePos);
if ((s != null) && (s is GraphNode))
{
_lastDragPoint = mousePos;
_heldButton = e.Button;
_draggingMode = DraggingMode.DrawLine;
}
else if (s == null)
{
_lastDragPoint = mousePos;
_heldButton = e.Button;
_draggingMode = DraggingMode.ScrollWindow;
this.Cursor = Cursors.SizeAll;
}
}
}
Focus();
}
private void ShowPublishResult(String message, IGraphObject result, FacebookRequestError error)
{
String title = null;
String alertMessage = null;
if (error == null)
{
title = GetString(Resource.String.success);
var cls = Java.Lang.Class.ForName("hellofacebooksample.HelloFacebookSampleAcvitity_GraphObjectWithId");
var obj = (Java.Lang.Object)result.Cast(cls);
Java.Lang.Reflect.Method m = obj.Class.GetMethod("getId");
String id = (String)m.Invoke(obj);
alertMessage = GetString(Resource.String.successfully_posted_post, message, id);
}
else
{
title = GetString(Resource.String.error);
alertMessage = error.ErrorMessage;
}
new AlertDialog.Builder(this)
.SetTitle(title)
.SetMessage(alertMessage)
.SetPositiveButton(Resource.String.ok, (object sender, DialogClickEventArgs e) => {})
.Show();
}
public static string DebugOutput(this IGraphObject obj)
{
if (obj is IEdge edge)
{
return($"{edge.Id} ({edge.FromNodeId} -> {edge.ToNodeId})");
}
return(obj.Id);
}
/// <summary>
/// Delete an object from the graph
/// </summary>
/// <param name="obj">The object to delete</param>
public void DeleteObject(IGraphObject obj)
{
if (obj is GraphLine)
{
DeleteLine(obj as GraphLine);
}
else if (obj is GraphNode)
{
DeleteNode(obj as GraphNode);
}
}
public static string GetGraphObjectInfo(IGraphObject graphObject)
{
var sb = new StringBuilder();
sb.AppendLine($"Тип: {graphObject.TypeName}");
sb.AppendLine($"Цвета: ");
foreach (var item in graphObject.Colors)
{
sb.AppendLine($" {item}");
}
sb.AppendLine($"Вершины: ");
foreach (var item in graphObject.Vertices)
{
sb.AppendLine($" {item}");
}
return(sb.ToString());
}
public static Graph LoadMultipleFiles(IEnumerable <string> resourcePaths, IFileProvider fileProvider, ExternalRessourcesLoadingPolicy loadingPolicy)
{
if (fileProvider == null)
{
throw new NullReferenceException("FileProvider implementation is not specified.");
}
IEnumerable <StreamReader> streams = new List <StreamReader>();
streams = resourcePaths.Select(p => fileProvider.GetFileReader(p));
List <GraphXmlDeserializer> deserializers = new List <GraphXmlDeserializer>();
foreach (StreamReader stream in streams)
{
XDocument xdoc = XDocument.Load(stream);
stream.Close();
GraphXmlDeserializer gds = new GraphXmlDeserializer();
gds.ParseFile(xdoc);
deserializers.Add(gds);
}
GraphXmlDeserializer main = deserializers[0];
for (int i = 1; i < deserializers.Count; i++)
{
main.Merge(deserializers[i]);
}
main.ResolveExternalEdges();
main.ResolveAnnotationDeclarations();
Graph g = new Graph();
foreach (IVertex v in main.vertexInstances.Values)
{
g.AddVertex(v);
}
foreach (var annotationPair in main.annotationsTable)
{
IGraphObject target = g.GetElementById(annotationPair.Key);
g.AddAnnotations(target, annotationPair.Value);
}
return(g);
}
public IGraphObject GetObjectById(Guid id)
{
IGraphObject result = null;
if (useLookupTable)
{
object queryResult = connection.ExecuteScalar <ConcreteDbCommand>($"SELECT lookup_table FROM IdType WHERE id = '{id}'");
if (queryResult != null)
{
string table = queryResult.ToString();
switch (table)
{
case "Vertex":
return(vertexStore.GetElementById(id));
default:
return(edgeStore.GetElementById(id, table));
}
}
}
else
{
try
{
result = vertexStore.GetElementById(id);
}
catch
{
result = edgeStore.GetElementById(id);
}
if (result == null)
{
result = edgeStore.GetElementById(id);
}
}
return(result);
}
private void ShowPublishResult(String message, IGraphObject result, FacebookRequestError error)
{
String title = null;
String alertMessage = null;
if (error == null)
{
title = GetString(Resource.String.success);
String id = ((GraphObjectWithId)result.Cast(Java.Lang.Class.FromType(typeof(GraphObjectWithId)))).Id;
alertMessage = GetString(Resource.String.successfully_posted_post, message, id);
}
else
{
title = GetString(Resource.String.error);
alertMessage = error.ErrorMessage;
}
new AlertDialog.Builder(this)
.SetTitle(title)
.SetMessage(alertMessage)
.SetPositiveButton(Resource.String.ok, (object sender, DialogClickEventArgs e) => {})
.Show();
}
private void ShowPublishResult(String message, IGraphObject result, FacebookRequestError error)
{
String title = null;
String alertMessage = null;
if (error == null)
{
title = GetString(Resource.String.success);
var id = result.GetProperty("id").ToString();
alertMessage = GetString(Resource.String.successfully_posted_post, message, id);
}
else
{
title = GetString(Resource.String.error);
alertMessage = error.ErrorMessage;
}
new AlertDialog.Builder(this)
.SetTitle(title)
.SetMessage(alertMessage)
.SetPositiveButton(Resource.String.ok, (object sender, DialogClickEventArgs e) => { OnBackPressed(); })
.Show();
}
public List <Annotation> GetAnnotations(IGraphObject @object)
{
return(trie.GetAnnotations(@object));
}
private void ShowPublishResult (String message, IGraphObject result, FacebookRequestError error)
{
String title = null;
String alertMessage = null;
if (error == null) {
title = GetString (Resource.String.success);
String id = ((GraphObjectWithId)result.Cast (Java.Lang.Class.FromType (typeof(GraphObjectWithId)))).Id;
alertMessage = GetString (Resource.String.successfully_posted_post, message, id);
} else {
title = GetString (Resource.String.error);
alertMessage = error.ErrorMessage;
}
new AlertDialog.Builder (this)
.SetTitle (title)
.SetMessage (alertMessage)
.SetPositiveButton (Resource.String.ok, (object sender, DialogClickEventArgs e) => {})
.Show ();
}
protected override void FinalizeSetUp()
{
g = new GraphObject();
}
protected override void FinalizeSetUp()
{
g = new GraphObject();
}
public BasicTraversal(IGraphObject startElement)
{
_startElement = startElement;
}
/// <summary>
/// Delete an object from the graph
/// </summary>
/// <param name="obj">The object to delete</param>
public void DeleteObject(IGraphObject obj)
{
if (obj is GraphLine)
{
DeleteLine(obj as GraphLine);
}
else if (obj is GraphNode)
{
DeleteNode(obj as GraphNode);
}
}
public IGraphObject AddGraphObject(IGraphObject graphObject)
{
Nodes.Add(graphObject);
return(graphObject);
}
private bool IsBatchObject(IGraphObject obj)
{
return(obj != null && obj.DbUrl == "batch");
}
private void ShowPublishResult (String message, IGraphObject result, FacebookRequestError error)
{
String title = null;
String alertMessage = null;
if (error == null) {
title = GetString (Resource.String.success);
var cls = Java.Lang.Class.ForName ("hellofacebooksample.HelloFacebookSampleAcvitity_GraphObjectWithId");
var obj = (Java.Lang.Object) result.Cast (cls);
Java.Lang.Reflect.Method m = obj.Class.GetMethod ("getId");
String id = (String) m.Invoke (obj);
alertMessage = GetString (Resource.String.successfully_posted_post, message, id);
} else {
title = GetString (Resource.String.error);
alertMessage = error.ErrorMessage;
}
new AlertDialog.Builder (this)
.SetTitle (title)
.SetMessage (alertMessage)
.SetPositiveButton (Resource.String.ok, (object sender, DialogClickEventArgs e) => {})
.Show ();
}
/// <summary>
/// Conducts a undirected Depth First Search (DFS)
/// </summary>
/// <param name="nodeCriteria">
/// A criteria that is evaluated on nodes visited.
/// If true, the node will be included in the result, and all edges (connection to other nodes) will be followed.
/// If false, the node will not be included in the result, and the traversal will not folow any more edges from this node.
/// </param>
/// <returns>Both nodes and edged will be returned in the result.</returns>
public List <IGraphObject> UndirectedDFS(long version, Predicate <TNode> nodeCriteria, Predicate <TEdge> edgeCriteria, bool includeNodesWhereCriteriaIsFalse = false)
{
Queue <IGraphObject> traverseOrder = new Queue <IGraphObject>();
Stack <IGraphObject> stack = new Stack <IGraphObject>();
HashSet <IGraphObject> visited = new HashSet <IGraphObject>();
stack.Push(_startElement);
visited.Add(_startElement);
while (stack.Count > 0)
{
IGraphObject p = stack.Pop();
traverseOrder.Enqueue(p);
var neighbors = p.NeighborElements(version);
foreach (var neighbor in neighbors)
{
// If we're dealing with an edge
if (neighbor is TEdge)
{
if (!visited.Contains(neighbor))
{
visited.Add(neighbor);
if (edgeCriteria == null)
{
stack.Push(neighbor);
}
else if (edgeCriteria.Invoke((TEdge)neighbor))
{
stack.Push(neighbor);
}
else
{
if (includeNodesWhereCriteriaIsFalse)
{
traverseOrder.Enqueue(neighbor);
}
}
}
}
// We're dealing with a node
else
{
if (!visited.Contains(neighbor))
{
visited.Add(neighbor);
if (nodeCriteria == null)
{
stack.Push(neighbor);
}
else if (nodeCriteria.Invoke((TNode)neighbor))
{
stack.Push(neighbor);
}
else
{
if (includeNodesWhereCriteriaIsFalse)
{
traverseOrder.Enqueue(neighbor);
}
}
}
}
}
}
return(traverseOrder.ToList());
}
public void RemoveGraphObject(IGraphObject graphObject)
{
Nodes.Remove(graphObject);
}
