Added Node and Canvas Inspector GUI

- Node Inspector calls DrawNodePropertyEditor and defaults to imitating the NodeGUI
- Adjusted selected objects after click to either select a node or the canvas itself

Editor/Node_Editor/CanvasInspector.cs

@@ -0,0 +1,73 @@
+using UnityEngine;
+using UnityEditor;
+
+namespace NodeEditorFramework.Standard
+{
+	[CustomEditor(typeof(NodeCanvas), true)]
+	public class CanvasInspector : Editor
+	{
+		public static GUIStyle titleStyle;
+		public static GUIStyle subTitleStyle;
+		public static GUIStyle boldLabelStyle;
+
+		public NodeCanvas canvas;
+
+		public void OnEnable()
+		{
+			canvas = (NodeCanvas)target;
+			canvas.Validate();
+		}
+
+		public override void OnInspectorGUI()
+		{
+			if (canvas == null)
+				canvas = (NodeCanvas)target;
+			if (canvas == null)
+				return;
+			if (titleStyle == null)
+			{
+				titleStyle = new GUIStyle(GUI.skin.label);
+				titleStyle.fontStyle = FontStyle.Bold;
+				titleStyle.alignment = TextAnchor.MiddleCenter;
+				titleStyle.fontSize = 16;
+			}
+			if (subTitleStyle == null)
+			{
+				subTitleStyle = new GUIStyle(GUI.skin.label);
+				subTitleStyle.fontStyle = FontStyle.Bold;
+				subTitleStyle.alignment = TextAnchor.MiddleCenter;
+				subTitleStyle.fontSize = 12;
+			}
+			if (boldLabelStyle == null)
+			{
+				boldLabelStyle = new GUIStyle(GUI.skin.label);
+				boldLabelStyle.fontStyle = FontStyle.Bold;
+			}
+
+			EditorGUI.BeginChangeCheck();
+
+			GUILayout.Space(10);
+
+			GUILayout.Label(new GUIContent(canvas.saveName, canvas.savePath), titleStyle);
+			GUILayout.Label(canvas.livesInScene? "Scene Save" : "Asset Save", subTitleStyle);
+			GUILayout.Label("Type: " + canvas.canvasName, subTitleStyle);
+
+			GUILayout.Space(10);
+
+			if (GUILayout.Button("Open"))
+			{
+				string NodeCanvasPath = AssetDatabase.GetAssetPath(canvas);
+				NodeEditorWindow.OpenNodeEditor().canvasCache.LoadNodeCanvas(NodeCanvasPath);
+			}
+
+			GUILayout.Space(10);
+
+			GUILayout.Label("Nodes", boldLabelStyle);
+			foreach (Node node in canvas.nodes)
+			{
+				string label =  node.Title;
+				EditorGUILayout.ObjectField(label, node, node.GetType(), true);
+			}
+		}
+	}
+}

Editor/Node_Editor/NodeInspector.cs

@@ -0,0 +1,72 @@
+using UnityEngine;
+using UnityEditor;
+using NodeEditorFramework.Utilities;
+
+namespace NodeEditorFramework.Standard
+{
+	[CustomEditor(typeof(Node), true)]
+	public class NodeInspector : Editor
+	{
+		public static GUIStyle titleStyle;
+		public static GUIStyle boldLabelStyle;
+		public Node node;
+
+		public void OnEnable()
+		{
+			node = (Node)target;
+		}
+
+		public override void OnInspectorGUI()
+		{
+			if (node == null)
+				node = (Node)target;
+			if (node == null)
+				return;
+			if (titleStyle == null)
+			{
+				titleStyle = new GUIStyle(GUI.skin.label);
+				titleStyle.fontStyle = FontStyle.Bold;
+				titleStyle.alignment = TextAnchor.MiddleCenter;
+				titleStyle.fontSize = 16;
+			}
+			if (boldLabelStyle == null)
+			{
+				boldLabelStyle = new GUIStyle(GUI.skin.label);
+				boldLabelStyle.fontStyle = FontStyle.Bold;
+			}
+
+			OverlayGUI.StartOverlayGUI("NodeInspector");
+
+			EditorGUI.BeginChangeCheck();
+
+			GUILayout.Space(10);
+
+			GUILayout.Label(node.Title, titleStyle);
+
+			GUILayout.Space(10);
+
+			GUILayout.Label("Rect: " + node.rect.ToString());
+			node.backgroundColor = EditorGUILayout.ColorField("Color", node.backgroundColor);
+
+			GUILayout.Space(10);
+
+			GUILayout.Label("Connection Ports", boldLabelStyle);
+			foreach (ConnectionPort port in node.connectionPorts)
+			{
+				string labelPrefix = port.direction == Direction.In ? "Input " : (port.direction == Direction.Out ? "Output " : "");
+				string label = labelPrefix + port.styleID + " '" + port.name + "'";
+				EditorGUILayout.ObjectField(label, port, port.GetType(), true);
+			}
+
+			GUILayout.Space(10);
+
+			GUILayout.Label("Property Editor", boldLabelStyle);
+			node.DrawNodePropertyEditor();
+
+			if (EditorGUI.EndChangeCheck())
+				NodeEditor.RepaintClients();
+
+			OverlayGUI.EndOverlayGUI();
+		}
+	}
+}

Node_Editor/Framework/Core/ConnectionKnob.cs

@@ -247,7 +247,7 @@ public void DisplayLayout (GUIContent content, GUIStyle style)
 		/// </summary>
 		public void SetPosition () 
 		{
-			if (Event.current.type != EventType.Repaint)
+			if (Event.current.type != EventType.Repaint || body.ignoreGUIKnobPlacement)
 				return;
 			Vector2 pos = GUILayoutUtility.GetLastRect ().center + body.contentOffset;
 			SetPosition (side == NodeSide.Bottom || side == NodeSide.Top? pos.x : pos.y);
@@ -258,6 +258,8 @@ public void SetPosition ()
 		/// </summary>
 		public void SetPosition(float position, NodeSide nodeSide)
 		{
+			if (body.ignoreGUIKnobPlacement)
+				return;
 			if (side != nodeSide)
 			{
 				side = nodeSide;
@@ -271,6 +273,8 @@ public void SetPosition(float position, NodeSide nodeSide)
 		/// </summary>
 		public void SetPosition(float position)
 		{
+			if (body.ignoreGUIKnobPlacement)
+				return;
 			sidePosition = position;
 		}
 

Node_Editor/Framework/Core/Node.cs

@@ -29,6 +29,7 @@ public abstract partial class Node : ScriptableObject
 		// Internal
 		internal Vector2 contentOffset = Vector2.zero;
 		internal Vector2 nodeGUIHeight;
+		internal bool ignoreGUIKnobPlacement;
 
 		// Style
 		public Color backgroundColor = Color.white;
@@ -115,7 +116,22 @@ public virtual void NodeGUI ()
 		/// Used to display a custom node property editor in the GUI.
 		/// By default shows the standard NodeGUI.
 		/// </summary>
-		public virtual void DrawNodePropertyEditor ()  { NodeGUI (); }
+		public virtual void DrawNodePropertyEditor ()
+		{
+			try
+			{ // Draw Node GUI without disturbing knob placement
+				ignoreGUIKnobPlacement = true;
+				NodeEditorGUI.StartNodeGUI(false);
+				GUILayout.BeginVertical(GUI.skin.box);
+				NodeGUI();
+				GUILayout.EndVertical();
+				NodeEditorGUI.EndNodeGUI();
+			}
+			finally
+			{ // Be sure to always reset the state to not mess up other GUI code
+				ignoreGUIKnobPlacement = false;
+			}
+		}
 
 		/// <summary>
 		/// Calculates the outputs of this Node depending on the inputs.

Node_Editor/Framework/Interface/NodeEditorInputSystem.cs

@@ -251,11 +251,13 @@ private static void HandleSelecting (NodeEditorInputInfo inputInfo)
 				unfocusControlsForState = state;
 				state.selectedNode = state.focusedNode;
 				NodeEditor.RepaintClients ();
-			#if UNITY_EDITOR
-				if (state.selectedNode != null)
-					UnityEditor.Selection.activeObject = state.selectedNode;
-			#endif
 			}
+#if UNITY_EDITOR
+			if (state.selectedNode != null)
+				UnityEditor.Selection.activeObject = state.selectedNode;
+			else
+				UnityEditor.Selection.activeObject = state.canvas;
+#endif
 		}
 
 		// CONTEXT CLICKS