// Create and open the "Create New Node" dropdown menu.
public void CreateNodeMenuGUI(Patch patch)
{
if (GUILayout.Button(_buttonText, EditorStyles.toolbarDropDown))
{
var menu = new GenericMenu();
foreach (var nodeType in _nodeTypes)
menu.AddItem(
new GUIContent(nodeType.label), false,
OnMenuItem, new MenuItemData(patch, nodeType.type)
);
var oy = EditorStyles.toolbar.fixedHeight - 2;
menu.DropDown(new Rect(1, oy, 1, 1));
}
}
// Reset the internal state.
void ResetState()
{
_patchManager.Reset();
if (_patch == null || !_patch.isValid)
_patch = _patchManager.RetrieveLastSelected();
else
_patch.Rescan();
_mainViewSize = Vector2.one * 300; // minimum view size
Repaint();
}
void OnGUI()
{
// Do nothing while play mode.
if (isPlayMode) {
DrawPlaceholderGUI("Not available in play mode");
return;
}
// If there is something wrong with the patch manager, reset it.
if (!_patchManager.isValid) _patchManager.Reset();
// Patch validity check.
if (_patch != null)
if (!_patch.isValid)
_patch = null; // Seems like not good. Abandon it.
else if (!_patch.CheckNodesValidity())
_patch.Rescan(); // Some nodes are not good. Rescan them.
// Get a patch if no one is selected.
if (_patch == null)
_patch = _patchManager.RetrieveLastSelected();
// Draw a placeholder if no patch is available.
// Disable GUI during the play mode, or when no patch is available.
if ( _patch == null) {
DrawPlaceholderGUI("No patch available");
return;
}
// Tool bar
EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);
// - Create node menu
_nodeFactory.CreateNodeMenuGUI(_patch);
GUILayout.Space(100);
// - Patch selector
var patchIndex = _patchManager.GetIndexOf(_patch);
var newPatchIndex = EditorGUILayout.Popup(
patchIndex, _patchManager.MakeNameList(),
EditorStyles.toolbarDropDown
);
GUILayout.FlexibleSpace();
EditorGUILayout.EndHorizontal();
// View area
EditorGUILayout.BeginHorizontal();
// - Main view
DrawMainViewGUI();
// - Side view (property editor)
DrawSideBarGUI();
EditorGUILayout.EndHorizontal();
// Re-initialize the editor if the patch selection was changed.
if (patchIndex != newPatchIndex)
{
_patch = _patchManager.RetrieveAt(newPatchIndex);
_patchManager.Select(_patch);
Repaint();
}
// Cancel wiring with a mouse click or hitting the esc key.
if (_wiring != null)
{
var e = Event.current;
if (e.type == EventType.MouseUp ||
(e.type == EventType.KeyDown && e.keyCode == KeyCode.Escape))
{
_wiring = null;
e.Use();
}
}
}
void OnDisable()
{
if (_propertyEditor != null) {
DestroyImmediate(_propertyEditor);
_propertyEditor = null;
}
_patchManager = null;
_nodeFactory = null;
_patch = null;
Undo.undoRedoPerformed -= OnUndo;
EditorApplication.hierarchyWindowChanged -= OnHierarchyWindowChanged;
}
void OnEnable()
{
_patchManager = new PatchManager();
_nodeFactory = new NodeFactory();
_mainViewSize = Vector2.one * 300; // minimum view size
_patchManager.Reset();
_patch = _patchManager.RetrieveLastSelected();
Undo.undoRedoPerformed += OnUndo;
EditorApplication.hierarchyWindowChanged += OnHierarchyWindowChanged;
}
// Remove itself from the patch.
public void RemoveFromPatch(Patch patch)
{
Undo.DestroyObjectImmediate(_instance.gameObject);
}
// Determine the index of a given patch.
public int GetIndexOf(Patch patch)
{
return(Array.FindIndex(
_instances, i => patch.IsRepresentationOf(i)
));
}
// Determine the index of a given patch.
public int GetIndexOf(Patch patch)
{
return Array.FindIndex(
_instances, i => patch.IsRepresentationOf(i)
);
}
// Enumerate all links from the outlets and cache them.
void CacheLinks(Patch patch)
{
_cachedLinks = new List<NodeLink>();
foreach (var outlet in _outlets)
{
// Scan all the events from the outlet.
var boundEvent = outlet.boundEvent;
var targetCount = boundEvent.GetPersistentEventCount();
for (var i = 0; i < targetCount; i++)
{
var target = boundEvent.GetPersistentTarget(i);
// Ignore it if it's a null event or the target is not a node.
if (target == null || !(target is Wiring.NodeBase)) continue;
// Try to retrieve the linked inlet.
var targetNode = patch.GetNodeOfInstance((Wiring.NodeBase)target);
var methodName = boundEvent.GetPersistentMethodName(i);
var inlet = targetNode.GetInletWithName(methodName);
// Cache it if it's a valid link.
if (targetNode != null && inlet != null)
_cachedLinks.Add(new NodeLink(this, outlet, targetNode, inlet));
}
}
}
// Draw lines of the links from this node.
public bool DrawLinkLines(Patch patch)
{
// Check if the position information is ready.
if (_inlets.Count > 0 &&
_inlets[0].buttonRect.center == Vector2.zero) return false;
if (_outlets.Count > 0 &&
_outlets[0].buttonRect.center == Vector2.zero) return false;
// Make cache and draw all the lines.
if (_cachedLinks == null) CacheLinks(patch);
foreach (var link in _cachedLinks) link.DrawLine();
return true;
}
// Remove all links to a given node.
public void RemoveLinksTo(Node targetNode, Patch patch)
{
if (_cachedLinks == null) CacheLinks(patch);
foreach (var link in _cachedLinks)
if (link.toNode == targetNode)
RemoveLink(link.fromOutlet, link.toNode, link.toInlet);
}
// If this node has a link to a given inlet, return it.
public NodeLink TryGetLinkTo(Node targetNode, Inlet inlet, Patch patch)
{
if (_cachedLinks == null) CacheLinks(patch);
foreach (var link in _cachedLinks)
if (link.toInlet == inlet) return link;
return null;
}
// Enumerate all the links from a given outlet.
public NodeLink[] EnumerateLinksFrom(Outlet outlet, Patch patch)
{
if (_cachedLinks == null) CacheLinks(patch);
var temp = new List<NodeLink>();
foreach (var link in _cachedLinks)
if (link.fromOutlet == outlet) temp.Add(link);
return temp.ToArray();
}
// Select a given patch for later use.
public void Select(Patch patch)
{
foreach (var instance in _instances)
instance._wiringSelected = patch.IsRepresentationOf(instance);
}
// Remove itself from the patch.
public void RemoveFromPatch(Patch patch)
{
Undo.DestroyObjectImmediate(_instance.gameObject);
}
public MenuItemData(Patch patch, Type type)
{
this.patch = patch;
this.type = type;
}
public MenuItemData(Patch patch, System.Type type)
{
this.patch = patch;
this.type = type;
}